/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-55.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 03:00:02,731 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 03:00:02,801 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 03:00:02,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 03:00:02,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 03:00:02,835 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 03:00:02,835 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 03:00:02,836 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 03:00:02,836 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 03:00:02,841 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 03:00:02,841 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 03:00:02,842 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 03:00:02,842 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 03:00:02,843 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 03:00:02,843 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 03:00:02,844 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 03:00:02,844 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 03:00:02,844 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 03:00:02,844 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 03:00:02,844 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 03:00:02,844 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 03:00:02,845 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 03:00:02,845 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 03:00:02,845 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 03:00:02,845 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 03:00:02,845 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 03:00:02,845 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 03:00:02,846 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 03:00:02,846 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 03:00:02,846 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 03:00:02,847 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 03:00:02,847 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 03:00:02,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 03:00:02,848 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 03:00:02,848 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 03:00:02,848 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 03:00:02,848 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 03:00:02,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 03:00:02,848 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 03:00:02,849 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 03:00:02,849 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 03:00:02,849 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 03:00:02,849 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 03:00:02,849 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 03:00:03,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 03:00:03,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 03:00:03,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 03:00:03,080 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 03:00:03,080 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 03:00:03,081 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-55.i [2023-12-16 03:00:04,113 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 03:00:04,318 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 03:00:04,319 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-55.i [2023-12-16 03:00:04,343 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea344f287/a30ac20d92f344f0b0b0b79d66cea66b/FLAGaf9d1442a [2023-12-16 03:00:04,356 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea344f287/a30ac20d92f344f0b0b0b79d66cea66b [2023-12-16 03:00:04,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 03:00:04,359 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 03:00:04,359 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 03:00:04,359 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 03:00:04,363 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 03:00:04,363 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:00:04" (1/1) ... [2023-12-16 03:00:04,364 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@293d0f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:04, skipping insertion in model container [2023-12-16 03:00:04,364 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:00:04" (1/1) ... [2023-12-16 03:00:04,410 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 03:00:04,536 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-55.i[916,929] [2023-12-16 03:00:04,756 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 03:00:04,768 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 03:00:04,783 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-55.i[916,929] [2023-12-16 03:00:04,890 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 03:00:04,908 INFO L206 MainTranslator]: Completed translation [2023-12-16 03:00:04,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:04 WrapperNode [2023-12-16 03:00:04,909 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 03:00:04,910 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 03:00:04,910 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 03:00:04,910 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 03:00:04,915 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:04" (1/1) ... [2023-12-16 03:00:04,939 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:04" (1/1) ... [2023-12-16 03:00:05,057 INFO L138 Inliner]: procedures = 26, calls = 131, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 795 [2023-12-16 03:00:05,058 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 03:00:05,059 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 03:00:05,059 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 03:00:05,059 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 03:00:05,066 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:04" (1/1) ... [2023-12-16 03:00:05,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:04" (1/1) ... [2023-12-16 03:00:05,083 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:04" (1/1) ... [2023-12-16 03:00:05,120 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]. [2023-12-16 03:00:05,120 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:04" (1/1) ... [2023-12-16 03:00:05,120 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:04" (1/1) ... [2023-12-16 03:00:05,149 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:04" (1/1) ... [2023-12-16 03:00:05,162 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:04" (1/1) ... [2023-12-16 03:00:05,167 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:04" (1/1) ... [2023-12-16 03:00:05,172 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:04" (1/1) ... [2023-12-16 03:00:05,182 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 03:00:05,183 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 03:00:05,183 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 03:00:05,184 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 03:00:05,184 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:04" (1/1) ... [2023-12-16 03:00:05,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 03:00:05,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:00:05,221 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) [2023-12-16 03:00:05,265 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 [2023-12-16 03:00:05,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 03:00:05,271 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 03:00:05,271 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 03:00:05,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 03:00:05,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 03:00:05,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 03:00:05,389 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 03:00:05,391 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 03:00:06,114 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 03:00:06,159 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 03:00:06,159 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 03:00:06,160 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:00:06 BoogieIcfgContainer [2023-12-16 03:00:06,160 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 03:00:06,162 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 03:00:06,162 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 03:00:06,164 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 03:00:06,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:00:04" (1/3) ... [2023-12-16 03:00:06,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db45c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:00:06, skipping insertion in model container [2023-12-16 03:00:06,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:04" (2/3) ... [2023-12-16 03:00:06,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db45c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:00:06, skipping insertion in model container [2023-12-16 03:00:06,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:00:06" (3/3) ... [2023-12-16 03:00:06,166 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-55.i [2023-12-16 03:00:06,198 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 03:00:06,199 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 03:00:06,244 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 03:00:06,248 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;@3b7169dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 03:00:06,249 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 03:00:06,253 INFO L276 IsEmpty]: Start isEmpty. Operand has 313 states, 192 states have (on average 1.5520833333333333) internal successors, (298), 193 states have internal predecessors, (298), 118 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 118 states have call predecessors, (118), 118 states have call successors, (118) [2023-12-16 03:00:06,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2023-12-16 03:00:06,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:00:06,289 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:00:06,290 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:00:06,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:00:06,296 INFO L85 PathProgramCache]: Analyzing trace with hash -2062824473, now seen corresponding path program 1 times [2023-12-16 03:00:06,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:00:06,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812199813] [2023-12-16 03:00:06,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:06,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:00:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:00:06,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:00:06,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812199813] [2023-12-16 03:00:06,700 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 03:00:06,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879216298] [2023-12-16 03:00:06,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:06,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:00:06,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:00:06,703 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) [2023-12-16 03:00:06,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 03:00:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:00:07,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 1702 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 03:00:07,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:00:07,219 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 27378 trivial. 0 not checked. [2023-12-16 03:00:07,220 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:00:07,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879216298] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:00:07,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:00:07,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 03:00:07,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203576160] [2023-12-16 03:00:07,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:00:07,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 03:00:07,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:00:07,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 03:00:07,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 03:00:07,254 INFO L87 Difference]: Start difference. First operand has 313 states, 192 states have (on average 1.5520833333333333) internal successors, (298), 193 states have internal predecessors, (298), 118 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 118 states have call predecessors, (118), 118 states have call successors, (118) Second operand has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 2 states have call successors, (118) [2023-12-16 03:00:07,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:00:07,312 INFO L93 Difference]: Finished difference Result 623 states and 1184 transitions. [2023-12-16 03:00:07,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 03:00:07,315 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 2 states have call successors, (118) Word has length 742 [2023-12-16 03:00:07,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:00:07,323 INFO L225 Difference]: With dead ends: 623 [2023-12-16 03:00:07,324 INFO L226 Difference]: Without dead ends: 311 [2023-12-16 03:00:07,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 741 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 03:00:07,331 INFO L413 NwaCegarLoop]: 525 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, 525 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 [2023-12-16 03:00:07,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 525 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:00:07,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-12-16 03:00:07,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2023-12-16 03:00:07,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 191 states have (on average 1.5287958115183247) internal successors, (292), 191 states have internal predecessors, (292), 118 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 118 states have call predecessors, (118), 118 states have call successors, (118) [2023-12-16 03:00:07,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 528 transitions. [2023-12-16 03:00:07,423 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 528 transitions. Word has length 742 [2023-12-16 03:00:07,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:00:07,425 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 528 transitions. [2023-12-16 03:00:07,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 2 states have call successors, (118) [2023-12-16 03:00:07,426 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 528 transitions. [2023-12-16 03:00:07,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2023-12-16 03:00:07,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:00:07,440 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:00:07,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 03:00:07,645 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 [2023-12-16 03:00:07,645 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:00:07,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:00:07,646 INFO L85 PathProgramCache]: Analyzing trace with hash -970539437, now seen corresponding path program 1 times [2023-12-16 03:00:07,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:00:07,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428072235] [2023-12-16 03:00:07,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:07,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:00:07,761 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:00:07,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [519687011] [2023-12-16 03:00:07,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:07,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:00:07,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:00:07,782 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) [2023-12-16 03:00:07,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 03:00:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:00:08,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 1702 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 03:00:08,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:00:08,269 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-12-16 03:00:08,270 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:00:08,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:00:08,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428072235] [2023-12-16 03:00:08,270 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:00:08,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519687011] [2023-12-16 03:00:08,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519687011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:00:08,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:00:08,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 03:00:08,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069344014] [2023-12-16 03:00:08,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:00:08,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:00:08,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:00:08,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:00:08,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:00:08,278 INFO L87 Difference]: Start difference. First operand 311 states and 528 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-12-16 03:00:08,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:00:08,376 INFO L93 Difference]: Finished difference Result 931 states and 1582 transitions. [2023-12-16 03:00:08,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:00:08,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 742 [2023-12-16 03:00:08,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:00:08,385 INFO L225 Difference]: With dead ends: 931 [2023-12-16 03:00:08,385 INFO L226 Difference]: Without dead ends: 621 [2023-12-16 03:00:08,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 740 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:00:08,389 INFO L413 NwaCegarLoop]: 827 mSDtfsCounter, 524 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:00:08,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 1340 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:00:08,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2023-12-16 03:00:08,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 619. [2023-12-16 03:00:08,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 380 states have (on average 1.5289473684210526) internal successors, (581), 380 states have internal predecessors, (581), 236 states have call successors, (236), 2 states have call predecessors, (236), 2 states have return successors, (236), 236 states have call predecessors, (236), 236 states have call successors, (236) [2023-12-16 03:00:08,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1053 transitions. [2023-12-16 03:00:08,474 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1053 transitions. Word has length 742 [2023-12-16 03:00:08,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:00:08,476 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 1053 transitions. [2023-12-16 03:00:08,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-12-16 03:00:08,476 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1053 transitions. [2023-12-16 03:00:08,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2023-12-16 03:00:08,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:00:08,484 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:00:08,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 03:00:08,691 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 [2023-12-16 03:00:08,691 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:00:08,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:00:08,692 INFO L85 PathProgramCache]: Analyzing trace with hash 354316757, now seen corresponding path program 1 times [2023-12-16 03:00:08,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:00:08,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036983927] [2023-12-16 03:00:08,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:08,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:00:08,755 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:00:08,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1466742120] [2023-12-16 03:00:08,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:08,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:00:08,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:00:08,756 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) [2023-12-16 03:00:08,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 03:00:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:00:09,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 1702 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 03:00:09,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:00:09,177 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-12-16 03:00:09,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:00:09,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:00:09,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036983927] [2023-12-16 03:00:09,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:00:09,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466742120] [2023-12-16 03:00:09,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466742120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:00:09,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:00:09,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 03:00:09,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17271357] [2023-12-16 03:00:09,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:00:09,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:00:09,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:00:09,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:00:09,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:00:09,181 INFO L87 Difference]: Start difference. First operand 619 states and 1053 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-12-16 03:00:09,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:00:09,238 INFO L93 Difference]: Finished difference Result 1627 states and 2772 transitions. [2023-12-16 03:00:09,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:00:09,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 742 [2023-12-16 03:00:09,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:00:09,245 INFO L225 Difference]: With dead ends: 1627 [2023-12-16 03:00:09,246 INFO L226 Difference]: Without dead ends: 1009 [2023-12-16 03:00:09,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 740 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:00:09,249 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 321 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:00:09,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 1040 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:00:09,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2023-12-16 03:00:09,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 1005. [2023-12-16 03:00:09,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1005 states, 652 states have (on average 1.553680981595092) internal successors, (1013), 654 states have internal predecessors, (1013), 348 states have call successors, (348), 4 states have call predecessors, (348), 4 states have return successors, (348), 346 states have call predecessors, (348), 348 states have call successors, (348) [2023-12-16 03:00:09,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1709 transitions. [2023-12-16 03:00:09,357 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1709 transitions. Word has length 742 [2023-12-16 03:00:09,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:00:09,358 INFO L495 AbstractCegarLoop]: Abstraction has 1005 states and 1709 transitions. [2023-12-16 03:00:09,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-12-16 03:00:09,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1709 transitions. [2023-12-16 03:00:09,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2023-12-16 03:00:09,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:00:09,363 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:00:09,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 03:00:09,570 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 [2023-12-16 03:00:09,572 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:00:09,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:00:09,573 INFO L85 PathProgramCache]: Analyzing trace with hash -2027483045, now seen corresponding path program 1 times [2023-12-16 03:00:09,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:00:09,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555635539] [2023-12-16 03:00:09,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:09,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:00:09,630 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:00:09,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1620307883] [2023-12-16 03:00:09,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:09,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:00:09,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:00:09,633 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) [2023-12-16 03:00:09,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 03:00:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:00:09,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 1699 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 03:00:09,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:00:10,028 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-12-16 03:00:10,028 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:00:10,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:00:10,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555635539] [2023-12-16 03:00:10,029 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:00:10,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620307883] [2023-12-16 03:00:10,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620307883] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:00:10,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:00:10,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 03:00:10,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411322708] [2023-12-16 03:00:10,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:00:10,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:00:10,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:00:10,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:00:10,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:00:10,032 INFO L87 Difference]: Start difference. First operand 1005 states and 1709 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-12-16 03:00:10,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:00:10,158 INFO L93 Difference]: Finished difference Result 3001 states and 5101 transitions. [2023-12-16 03:00:10,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:00:10,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 742 [2023-12-16 03:00:10,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:00:10,169 INFO L225 Difference]: With dead ends: 3001 [2023-12-16 03:00:10,169 INFO L226 Difference]: Without dead ends: 1997 [2023-12-16 03:00:10,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 740 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:00:10,177 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 507 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:00:10,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 1459 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:00:10,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2023-12-16 03:00:10,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1221. [2023-12-16 03:00:10,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 868 states have (on average 1.6209677419354838) internal successors, (1407), 870 states have internal predecessors, (1407), 348 states have call successors, (348), 4 states have call predecessors, (348), 4 states have return successors, (348), 346 states have call predecessors, (348), 348 states have call successors, (348) [2023-12-16 03:00:10,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 2103 transitions. [2023-12-16 03:00:10,360 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 2103 transitions. Word has length 742 [2023-12-16 03:00:10,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:00:10,361 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 2103 transitions. [2023-12-16 03:00:10,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-12-16 03:00:10,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 2103 transitions. [2023-12-16 03:00:10,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2023-12-16 03:00:10,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:00:10,368 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:00:10,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 03:00:10,575 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 [2023-12-16 03:00:10,576 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:00:10,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:00:10,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1073542887, now seen corresponding path program 1 times [2023-12-16 03:00:10,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:00:10,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909481198] [2023-12-16 03:00:10,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:10,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:00:10,644 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:00:10,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [694398611] [2023-12-16 03:00:10,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:10,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:00:10,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:00:10,646 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) [2023-12-16 03:00:10,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 03:00:11,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:00:11,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 1696 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 03:00:11,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:00:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-12-16 03:00:11,166 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:00:11,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:00:11,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909481198] [2023-12-16 03:00:11,166 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:00:11,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694398611] [2023-12-16 03:00:11,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694398611] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:00:11,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:00:11,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 03:00:11,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042776360] [2023-12-16 03:00:11,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:00:11,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 03:00:11,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:00:11,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 03:00:11,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:00:11,169 INFO L87 Difference]: Start difference. First operand 1221 states and 2103 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-12-16 03:00:11,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:00:11,429 INFO L93 Difference]: Finished difference Result 4633 states and 7889 transitions. [2023-12-16 03:00:11,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 03:00:11,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 742 [2023-12-16 03:00:11,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:00:11,445 INFO L225 Difference]: With dead ends: 4633 [2023-12-16 03:00:11,446 INFO L226 Difference]: Without dead ends: 3413 [2023-12-16 03:00:11,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 743 GetRequests, 740 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 03:00:11,451 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 1071 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 03:00:11,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 1748 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 03:00:11,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3413 states. [2023-12-16 03:00:11,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3413 to 2127. [2023-12-16 03:00:11,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2127 states, 1578 states have (on average 1.626742712294043) internal successors, (2567), 1584 states have internal predecessors, (2567), 540 states have call successors, (540), 8 states have call predecessors, (540), 8 states have return successors, (540), 534 states have call predecessors, (540), 540 states have call successors, (540) [2023-12-16 03:00:11,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 3647 transitions. [2023-12-16 03:00:11,631 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 3647 transitions. Word has length 742 [2023-12-16 03:00:11,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:00:11,632 INFO L495 AbstractCegarLoop]: Abstraction has 2127 states and 3647 transitions. [2023-12-16 03:00:11,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-12-16 03:00:11,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 3647 transitions. [2023-12-16 03:00:11,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2023-12-16 03:00:11,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:00:11,639 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:00:11,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-16 03:00:11,846 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 [2023-12-16 03:00:11,846 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:00:11,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:00:11,847 INFO L85 PathProgramCache]: Analyzing trace with hash 312660507, now seen corresponding path program 1 times [2023-12-16 03:00:11,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:00:11,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115834974] [2023-12-16 03:00:11,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:11,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:00:11,902 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:00:11,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1368600801] [2023-12-16 03:00:11,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:11,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:00:11,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:00:11,918 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) [2023-12-16 03:00:11,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 03:00:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:00:12,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 1695 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 03:00:12,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:00:12,950 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 9633 proven. 273 refuted. 0 times theorem prover too weak. 17706 trivial. 0 not checked. [2023-12-16 03:00:12,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:00:13,460 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 78 proven. 273 refuted. 0 times theorem prover too weak. 27261 trivial. 0 not checked. [2023-12-16 03:00:13,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:00:13,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115834974] [2023-12-16 03:00:13,460 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:00:13,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368600801] [2023-12-16 03:00:13,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368600801] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:00:13,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:00:13,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-16 03:00:13,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509802000] [2023-12-16 03:00:13,461 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:00:13,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 03:00:13,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:00:13,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 03:00:13,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-16 03:00:13,464 INFO L87 Difference]: Start difference. First operand 2127 states and 3647 transitions. Second operand has 8 states, 8 states have (on average 20.5) internal successors, (164), 8 states have internal predecessors, (164), 2 states have call successors, (209), 2 states have call predecessors, (209), 4 states have return successors, (210), 2 states have call predecessors, (210), 2 states have call successors, (210) [2023-12-16 03:00:14,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:00:14,137 INFO L93 Difference]: Finished difference Result 4317 states and 7349 transitions. [2023-12-16 03:00:14,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 03:00:14,153 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.5) internal successors, (164), 8 states have internal predecessors, (164), 2 states have call successors, (209), 2 states have call predecessors, (209), 4 states have return successors, (210), 2 states have call predecessors, (210), 2 states have call successors, (210) Word has length 742 [2023-12-16 03:00:14,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:00:14,163 INFO L225 Difference]: With dead ends: 4317 [2023-12-16 03:00:14,163 INFO L226 Difference]: Without dead ends: 2191 [2023-12-16 03:00:14,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1490 GetRequests, 1475 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-12-16 03:00:14,181 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 617 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 03:00:14,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 963 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 03:00:14,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2023-12-16 03:00:14,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 2159. [2023-12-16 03:00:14,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2159 states, 1602 states have (on average 1.6073657927590512) internal successors, (2575), 1608 states have internal predecessors, (2575), 540 states have call successors, (540), 16 states have call predecessors, (540), 16 states have return successors, (540), 534 states have call predecessors, (540), 540 states have call successors, (540) [2023-12-16 03:00:14,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2159 states to 2159 states and 3655 transitions. [2023-12-16 03:00:14,339 INFO L78 Accepts]: Start accepts. Automaton has 2159 states and 3655 transitions. Word has length 742 [2023-12-16 03:00:14,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:00:14,340 INFO L495 AbstractCegarLoop]: Abstraction has 2159 states and 3655 transitions. [2023-12-16 03:00:14,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.5) internal successors, (164), 8 states have internal predecessors, (164), 2 states have call successors, (209), 2 states have call predecessors, (209), 4 states have return successors, (210), 2 states have call predecessors, (210), 2 states have call successors, (210) [2023-12-16 03:00:14,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2159 states and 3655 transitions. [2023-12-16 03:00:14,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2023-12-16 03:00:14,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:00:14,347 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:00:14,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 03:00:14,553 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 [2023-12-16 03:00:14,554 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:00:14,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:00:14,555 INFO L85 PathProgramCache]: Analyzing trace with hash 2087667869, now seen corresponding path program 1 times [2023-12-16 03:00:14,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:00:14,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888724498] [2023-12-16 03:00:14,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:14,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:00:14,636 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:00:14,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [958297674] [2023-12-16 03:00:14,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:14,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:00:14,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:00:14,638 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) [2023-12-16 03:00:14,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 03:00:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:00:15,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 1696 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 03:00:15,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:00:15,151 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-12-16 03:00:15,151 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:00:15,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:00:15,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888724498] [2023-12-16 03:00:15,152 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:00:15,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958297674] [2023-12-16 03:00:15,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958297674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:00:15,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:00:15,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 03:00:15,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790061471] [2023-12-16 03:00:15,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:00:15,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 03:00:15,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:00:15,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 03:00:15,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 03:00:15,154 INFO L87 Difference]: Start difference. First operand 2159 states and 3655 transitions. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-12-16 03:00:16,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:00:16,944 INFO L93 Difference]: Finished difference Result 9059 states and 15109 transitions. [2023-12-16 03:00:16,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-16 03:00:16,944 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 742 [2023-12-16 03:00:16,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:00:16,975 INFO L225 Difference]: With dead ends: 9059 [2023-12-16 03:00:16,979 INFO L226 Difference]: Without dead ends: 6901 [2023-12-16 03:00:16,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 750 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2023-12-16 03:00:16,986 INFO L413 NwaCegarLoop]: 1108 mSDtfsCounter, 2156 mSDsluCounter, 4272 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 1106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2156 SdHoareTripleChecker+Valid, 5380 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1106 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 03:00:16,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2156 Valid, 5380 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1106 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 03:00:16,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6901 states. [2023-12-16 03:00:17,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6901 to 3697. [2023-12-16 03:00:17,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3697 states, 2513 states have (on average 1.5001989653800238) internal successors, (3770), 2528 states have internal predecessors, (3770), 1130 states have call successors, (1130), 53 states have call predecessors, (1130), 53 states have return successors, (1130), 1115 states have call predecessors, (1130), 1130 states have call successors, (1130) [2023-12-16 03:00:17,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3697 states to 3697 states and 6030 transitions. [2023-12-16 03:00:17,335 INFO L78 Accepts]: Start accepts. Automaton has 3697 states and 6030 transitions. Word has length 742 [2023-12-16 03:00:17,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:00:17,336 INFO L495 AbstractCegarLoop]: Abstraction has 3697 states and 6030 transitions. [2023-12-16 03:00:17,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-12-16 03:00:17,336 INFO L276 IsEmpty]: Start isEmpty. Operand 3697 states and 6030 transitions. [2023-12-16 03:00:17,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2023-12-16 03:00:17,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:00:17,343 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:00:17,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-16 03:00:17,551 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 [2023-12-16 03:00:17,552 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:00:17,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:00:17,552 INFO L85 PathProgramCache]: Analyzing trace with hash 2089574493, now seen corresponding path program 1 times [2023-12-16 03:00:17,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:00:17,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107089237] [2023-12-16 03:00:17,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:17,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:00:17,598 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:00:17,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289661284] [2023-12-16 03:00:17,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:17,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:00:17,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:00:17,613 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) [2023-12-16 03:00:17,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 03:00:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:00:17,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 1694 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 03:00:17,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:00:18,130 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 1713 proven. 9 refuted. 0 times theorem prover too weak. 25890 trivial. 0 not checked. [2023-12-16 03:00:18,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:00:18,441 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 342 proven. 9 refuted. 0 times theorem prover too weak. 27261 trivial. 0 not checked. [2023-12-16 03:00:18,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:00:18,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107089237] [2023-12-16 03:00:18,441 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:00:18,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289661284] [2023-12-16 03:00:18,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289661284] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:00:18,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:00:18,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-16 03:00:18,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167466628] [2023-12-16 03:00:18,442 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:00:18,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 03:00:18,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:00:18,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 03:00:18,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-16 03:00:18,444 INFO L87 Difference]: Start difference. First operand 3697 states and 6030 transitions. Second operand has 8 states, 8 states have (on average 20.5) internal successors, (164), 8 states have internal predecessors, (164), 2 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2023-12-16 03:00:19,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:00:19,172 INFO L93 Difference]: Finished difference Result 7279 states and 11829 transitions. [2023-12-16 03:00:19,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 03:00:19,173 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.5) internal successors, (164), 8 states have internal predecessors, (164), 2 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) Word has length 742 [2023-12-16 03:00:19,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:00:19,189 INFO L225 Difference]: With dead ends: 7279 [2023-12-16 03:00:19,189 INFO L226 Difference]: Without dead ends: 3787 [2023-12-16 03:00:19,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1490 GetRequests, 1475 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-12-16 03:00:19,196 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 513 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 03:00:19,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 947 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 03:00:19,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3787 states. [2023-12-16 03:00:19,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3787 to 3709. [2023-12-16 03:00:19,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3709 states, 2522 states have (on average 1.492069785884219) internal successors, (3763), 2537 states have internal predecessors, (3763), 1130 states have call successors, (1130), 56 states have call predecessors, (1130), 56 states have return successors, (1130), 1115 states have call predecessors, (1130), 1130 states have call successors, (1130) [2023-12-16 03:00:19,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3709 states to 3709 states and 6023 transitions. [2023-12-16 03:00:19,453 INFO L78 Accepts]: Start accepts. Automaton has 3709 states and 6023 transitions. Word has length 742 [2023-12-16 03:00:19,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:00:19,453 INFO L495 AbstractCegarLoop]: Abstraction has 3709 states and 6023 transitions. [2023-12-16 03:00:19,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.5) internal successors, (164), 8 states have internal predecessors, (164), 2 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2023-12-16 03:00:19,454 INFO L276 IsEmpty]: Start isEmpty. Operand 3709 states and 6023 transitions. [2023-12-16 03:00:19,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2023-12-16 03:00:19,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:00:19,461 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:00:19,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 03:00:19,669 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 [2023-12-16 03:00:19,669 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:00:19,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:00:19,670 INFO L85 PathProgramCache]: Analyzing trace with hash 95429787, now seen corresponding path program 1 times [2023-12-16 03:00:19,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:00:19,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417105545] [2023-12-16 03:00:19,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:19,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:00:19,731 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:00:19,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [767407196] [2023-12-16 03:00:19,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:19,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:00:19,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:00:19,749 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) [2023-12-16 03:00:19,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 03:00:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:00:20,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 1695 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 03:00:20,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:00:21,323 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 16377 proven. 153 refuted. 0 times theorem prover too weak. 11082 trivial. 0 not checked. [2023-12-16 03:00:21,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:00:22,396 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 198 proven. 153 refuted. 0 times theorem prover too weak. 27261 trivial. 0 not checked. [2023-12-16 03:00:22,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:00:22,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417105545] [2023-12-16 03:00:22,397 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:00:22,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767407196] [2023-12-16 03:00:22,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767407196] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:00:22,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:00:22,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-16 03:00:22,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616722539] [2023-12-16 03:00:22,399 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:00:22,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 03:00:22,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:00:22,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 03:00:22,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-12-16 03:00:22,401 INFO L87 Difference]: Start difference. First operand 3709 states and 6023 transitions. Second operand has 16 states, 16 states have (on average 15.3125) internal successors, (245), 15 states have internal predecessors, (245), 7 states have call successors, (169), 4 states have call predecessors, (169), 6 states have return successors, (170), 7 states have call predecessors, (170), 7 states have call successors, (170) [2023-12-16 03:00:25,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:00:25,266 INFO L93 Difference]: Finished difference Result 13181 states and 21013 transitions. [2023-12-16 03:00:25,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-16 03:00:25,267 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.3125) internal successors, (245), 15 states have internal predecessors, (245), 7 states have call successors, (169), 4 states have call predecessors, (169), 6 states have return successors, (170), 7 states have call predecessors, (170), 7 states have call successors, (170) Word has length 742 [2023-12-16 03:00:25,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:00:25,308 INFO L225 Difference]: With dead ends: 13181 [2023-12-16 03:00:25,308 INFO L226 Difference]: Without dead ends: 9681 [2023-12-16 03:00:25,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1523 GetRequests, 1473 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=627, Invalid=2025, Unknown=0, NotChecked=0, Total=2652 [2023-12-16 03:00:25,320 INFO L413 NwaCegarLoop]: 812 mSDtfsCounter, 1006 mSDsluCounter, 2232 mSDsCounter, 0 mSdLazyCounter, 2986 mSolverCounterSat, 757 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 3044 SdHoareTripleChecker+Invalid, 3743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 757 IncrementalHoareTripleChecker+Valid, 2986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-16 03:00:25,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 3044 Invalid, 3743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [757 Valid, 2986 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-16 03:00:25,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9681 states. [2023-12-16 03:00:26,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9681 to 9409. [2023-12-16 03:00:26,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9409 states, 6278 states have (on average 1.4474354890092387) internal successors, (9087), 6325 states have internal predecessors, (9087), 2958 states have call successors, (2958), 172 states have call predecessors, (2958), 172 states have return successors, (2958), 2911 states have call predecessors, (2958), 2958 states have call successors, (2958) [2023-12-16 03:00:26,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9409 states to 9409 states and 15003 transitions. [2023-12-16 03:00:26,218 INFO L78 Accepts]: Start accepts. Automaton has 9409 states and 15003 transitions. Word has length 742 [2023-12-16 03:00:26,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:00:26,219 INFO L495 AbstractCegarLoop]: Abstraction has 9409 states and 15003 transitions. [2023-12-16 03:00:26,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.3125) internal successors, (245), 15 states have internal predecessors, (245), 7 states have call successors, (169), 4 states have call predecessors, (169), 6 states have return successors, (170), 7 states have call predecessors, (170), 7 states have call successors, (170) [2023-12-16 03:00:26,221 INFO L276 IsEmpty]: Start isEmpty. Operand 9409 states and 15003 transitions. [2023-12-16 03:00:26,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2023-12-16 03:00:26,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:00:26,232 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:00:26,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 03:00:26,442 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 [2023-12-16 03:00:26,443 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:00:26,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:00:26,443 INFO L85 PathProgramCache]: Analyzing trace with hash -241837753, now seen corresponding path program 1 times [2023-12-16 03:00:26,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:00:26,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557592927] [2023-12-16 03:00:26,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:26,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:00:26,485 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:00:26,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1997208664] [2023-12-16 03:00:26,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:26,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:00:26,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:00:26,487 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) [2023-12-16 03:00:26,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 03:00:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:00:26,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 1698 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 03:00:26,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:00:27,486 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 13833 proven. 189 refuted. 0 times theorem prover too weak. 13590 trivial. 0 not checked. [2023-12-16 03:00:27,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:00:27,788 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 162 proven. 189 refuted. 0 times theorem prover too weak. 27261 trivial. 0 not checked. [2023-12-16 03:00:27,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:00:27,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557592927] [2023-12-16 03:00:27,789 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:00:27,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997208664] [2023-12-16 03:00:27,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997208664] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:00:27,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:00:27,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-16 03:00:27,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749334843] [2023-12-16 03:00:27,790 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:00:27,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 03:00:27,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:00:27,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 03:00:27,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 03:00:27,792 INFO L87 Difference]: Start difference. First operand 9409 states and 15003 transitions. Second operand has 8 states, 8 states have (on average 31.375) internal successors, (251), 8 states have internal predecessors, (251), 3 states have call successors, (181), 2 states have call predecessors, (181), 4 states have return successors, (182), 3 states have call predecessors, (182), 3 states have call successors, (182) [2023-12-16 03:00:28,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:00:28,936 INFO L93 Difference]: Finished difference Result 18911 states and 29966 transitions. [2023-12-16 03:00:28,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 03:00:28,936 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.375) internal successors, (251), 8 states have internal predecessors, (251), 3 states have call successors, (181), 2 states have call predecessors, (181), 4 states have return successors, (182), 3 states have call predecessors, (182), 3 states have call successors, (182) Word has length 743 [2023-12-16 03:00:28,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:00:28,962 INFO L225 Difference]: With dead ends: 18911 [2023-12-16 03:00:28,962 INFO L226 Difference]: Without dead ends: 9727 [2023-12-16 03:00:28,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1488 GetRequests, 1478 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-16 03:00:28,982 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 255 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 03:00:28,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 936 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 03:00:28,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9727 states. [2023-12-16 03:00:29,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9727 to 9509. [2023-12-16 03:00:29,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9509 states, 6353 states have (on average 1.4327089563985518) internal successors, (9102), 6400 states have internal predecessors, (9102), 2958 states have call successors, (2958), 197 states have call predecessors, (2958), 197 states have return successors, (2958), 2911 states have call predecessors, (2958), 2958 states have call successors, (2958) [2023-12-16 03:00:29,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9509 states to 9509 states and 15018 transitions. [2023-12-16 03:00:29,951 INFO L78 Accepts]: Start accepts. Automaton has 9509 states and 15018 transitions. Word has length 743 [2023-12-16 03:00:29,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:00:29,952 INFO L495 AbstractCegarLoop]: Abstraction has 9509 states and 15018 transitions. [2023-12-16 03:00:29,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.375) internal successors, (251), 8 states have internal predecessors, (251), 3 states have call successors, (181), 2 states have call predecessors, (181), 4 states have return successors, (182), 3 states have call predecessors, (182), 3 states have call successors, (182) [2023-12-16 03:00:29,952 INFO L276 IsEmpty]: Start isEmpty. Operand 9509 states and 15018 transitions. [2023-12-16 03:00:29,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2023-12-16 03:00:29,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:00:29,963 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:00:29,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 03:00:30,171 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 [2023-12-16 03:00:30,171 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:00:30,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:00:30,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1085843255, now seen corresponding path program 1 times [2023-12-16 03:00:30,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:00:30,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104350071] [2023-12-16 03:00:30,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:30,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:00:30,252 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:00:30,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [283286563] [2023-12-16 03:00:30,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:30,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:00:30,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:00:30,254 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) [2023-12-16 03:00:30,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 03:00:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:00:30,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 1696 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 03:00:30,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:00:32,125 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 13867 proven. 186 refuted. 0 times theorem prover too weak. 13559 trivial. 0 not checked. [2023-12-16 03:00:32,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:00:32,662 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 165 proven. 186 refuted. 0 times theorem prover too weak. 27261 trivial. 0 not checked. [2023-12-16 03:00:32,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:00:32,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104350071] [2023-12-16 03:00:32,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:00:32,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283286563] [2023-12-16 03:00:32,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283286563] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:00:32,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:00:32,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-12-16 03:00:32,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96074557] [2023-12-16 03:00:32,663 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:00:32,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 03:00:32,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:00:32,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 03:00:32,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-16 03:00:32,674 INFO L87 Difference]: Start difference. First operand 9509 states and 15018 transitions. Second operand has 10 states, 10 states have (on average 27.3) internal successors, (273), 10 states have internal predecessors, (273), 4 states have call successors, (236), 3 states have call predecessors, (236), 5 states have return successors, (236), 4 states have call predecessors, (236), 4 states have call successors, (236) [2023-12-16 03:00:36,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:00:36,911 INFO L93 Difference]: Finished difference Result 41919 states and 65917 transitions. [2023-12-16 03:00:36,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 03:00:36,912 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 27.3) internal successors, (273), 10 states have internal predecessors, (273), 4 states have call successors, (236), 3 states have call predecessors, (236), 5 states have return successors, (236), 4 states have call predecessors, (236), 4 states have call successors, (236) Word has length 743 [2023-12-16 03:00:36,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:00:37,010 INFO L225 Difference]: With dead ends: 41919 [2023-12-16 03:00:37,010 INFO L226 Difference]: Without dead ends: 32639 [2023-12-16 03:00:37,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1490 GetRequests, 1476 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2023-12-16 03:00:37,034 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 1257 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1427 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 1612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 03:00:37,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1427 Valid, 1784 Invalid, 1612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 03:00:37,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32639 states. [2023-12-16 03:00:39,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32639 to 26031. [2023-12-16 03:00:39,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26031 states, 17280 states have (on average 1.4163194444444445) internal successors, (24474), 17421 states have internal predecessors, (24474), 8222 states have call successors, (8222), 528 states have call predecessors, (8222), 528 states have return successors, (8222), 8081 states have call predecessors, (8222), 8222 states have call successors, (8222) [2023-12-16 03:00:40,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26031 states to 26031 states and 40918 transitions. [2023-12-16 03:00:40,043 INFO L78 Accepts]: Start accepts. Automaton has 26031 states and 40918 transitions. Word has length 743 [2023-12-16 03:00:40,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:00:40,047 INFO L495 AbstractCegarLoop]: Abstraction has 26031 states and 40918 transitions. [2023-12-16 03:00:40,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 27.3) internal successors, (273), 10 states have internal predecessors, (273), 4 states have call successors, (236), 3 states have call predecessors, (236), 5 states have return successors, (236), 4 states have call predecessors, (236), 4 states have call successors, (236) [2023-12-16 03:00:40,048 INFO L276 IsEmpty]: Start isEmpty. Operand 26031 states and 40918 transitions. [2023-12-16 03:00:40,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2023-12-16 03:00:40,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:00:40,096 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:00:40,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 03:00:40,297 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 [2023-12-16 03:00:40,298 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:00:40,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:00:40,298 INFO L85 PathProgramCache]: Analyzing trace with hash 902824511, now seen corresponding path program 1 times [2023-12-16 03:00:40,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:00:40,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986388877] [2023-12-16 03:00:40,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:40,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:00:40,441 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:00:40,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1054190297] [2023-12-16 03:00:40,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:40,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:00:40,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:00:40,442 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) [2023-12-16 03:00:40,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 03:00:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:00:40,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 1699 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 03:00:40,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:00:42,176 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 12801 proven. 225 refuted. 0 times theorem prover too weak. 14586 trivial. 0 not checked. [2023-12-16 03:00:42,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:00:43,307 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 126 proven. 225 refuted. 0 times theorem prover too weak. 27261 trivial. 0 not checked. [2023-12-16 03:00:43,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:00:43,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986388877] [2023-12-16 03:00:43,307 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:00:43,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054190297] [2023-12-16 03:00:43,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054190297] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:00:43,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:00:43,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 22 [2023-12-16 03:00:43,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654893383] [2023-12-16 03:00:43,308 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:00:43,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-16 03:00:43,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:00:43,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-16 03:00:43,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2023-12-16 03:00:43,310 INFO L87 Difference]: Start difference. First operand 26031 states and 40918 transitions. Second operand has 22 states, 22 states have (on average 11.545454545454545) internal successors, (254), 22 states have internal predecessors, (254), 3 states have call successors, (193), 2 states have call predecessors, (193), 4 states have return successors, (194), 3 states have call predecessors, (194), 3 states have call successors, (194) Received shutdown request... [2023-12-16 03:01:05,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-12-16 03:01:05,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1573 GetRequests, 1484 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2350 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2164, Invalid=6026, Unknown=0, NotChecked=0, Total=8190 [2023-12-16 03:01:05,192 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 11479 mSDsluCounter, 3708 mSDsCounter, 0 mSdLazyCounter, 3552 mSolverCounterSat, 2334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11495 SdHoareTripleChecker+Valid, 4183 SdHoareTripleChecker+Invalid, 5886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2334 IncrementalHoareTripleChecker+Valid, 3552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-16 03:01:05,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11495 Valid, 4183 Invalid, 5886 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2334 Valid, 3552 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-16 03:01:05,194 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 03:01:05,204 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 03:01:05,204 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 [2023-12-16 03:01:05,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-16 03:01:05,402 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 [2023-12-16 03:01:05,403 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (26031states) and FLOYD_HOARE automaton (currently 75 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (147821 states constructed, input type IntersectNwa). [2023-12-16 03:01:05,406 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:01:05,408 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 03:01:05,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 03:01:05 BoogieIcfgContainer [2023-12-16 03:01:05,410 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 03:01:05,410 INFO L158 Benchmark]: Toolchain (without parser) took 61051.33ms. Allocated memory was 188.7MB in the beginning and 3.2GB in the end (delta: 3.0GB). Free memory was 142.0MB in the beginning and 2.3GB in the end (delta: -2.1GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2023-12-16 03:01:05,410 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 147.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 03:01:05,410 INFO L158 Benchmark]: CACSL2BoogieTranslator took 549.92ms. Allocated memory is still 188.7MB. Free memory was 141.7MB in the beginning and 109.1MB in the end (delta: 32.6MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2023-12-16 03:01:05,410 INFO L158 Benchmark]: Boogie Procedure Inliner took 148.16ms. Allocated memory is still 188.7MB. Free memory was 108.8MB in the beginning and 154.1MB in the end (delta: -45.3MB). Peak memory consumption was 9.0MB. Max. memory is 8.0GB. [2023-12-16 03:01:05,410 INFO L158 Benchmark]: Boogie Preprocessor took 123.76ms. Allocated memory is still 188.7MB. Free memory was 154.1MB in the beginning and 139.3MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-16 03:01:05,411 INFO L158 Benchmark]: RCFGBuilder took 976.36ms. Allocated memory is still 188.7MB. Free memory was 139.3MB in the beginning and 58.7MB in the end (delta: 80.6MB). Peak memory consumption was 80.7MB. Max. memory is 8.0GB. [2023-12-16 03:01:05,411 INFO L158 Benchmark]: TraceAbstraction took 59247.79ms. Allocated memory was 188.7MB in the beginning and 3.2GB in the end (delta: 3.0GB). Free memory was 58.2MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2023-12-16 03:01:05,412 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 188.7MB. Free memory is still 147.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 549.92ms. Allocated memory is still 188.7MB. Free memory was 141.7MB in the beginning and 109.1MB in the end (delta: 32.6MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 148.16ms. Allocated memory is still 188.7MB. Free memory was 108.8MB in the beginning and 154.1MB in the end (delta: -45.3MB). Peak memory consumption was 9.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 123.76ms. Allocated memory is still 188.7MB. Free memory was 154.1MB in the beginning and 139.3MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * RCFGBuilder took 976.36ms. Allocated memory is still 188.7MB. Free memory was 139.3MB in the beginning and 58.7MB in the end (delta: 80.6MB). Peak memory consumption was 80.7MB. Max. memory is 8.0GB. * TraceAbstraction took 59247.79ms. Allocated memory was 188.7MB in the beginning and 3.2GB in the end (delta: 3.0GB). Free memory was 58.2MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 1.9GB. 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 constructing difference of abstraction (26031states) and FLOYD_HOARE automaton (currently 75 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (147821 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 313 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 59.2s, OverallIterations: 12, TraceHistogramMax: 118, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 34.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20040 SdHoareTripleChecker+Valid, 9.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19706 mSDsluCounter, 23349 SdHoareTripleChecker+Invalid, 8.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15828 mSDsCounter, 5474 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10502 IncrementalHoareTripleChecker+Invalid, 15976 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5474 mSolverCounterUnsat, 7521 mSDtfsCounter, 10502 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13534 GetRequests, 13312 SyntacticMatches, 4 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3214 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26031occurred in iteration=11, InterpolantAutomatonStates: 126, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 12480 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 9.9s InterpolantComputationTime, 9650 NumberOfCodeBlocks, 9650 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 13346 ConstructedInterpolants, 0 QuantifiedInterpolants, 37170 SizeOfPredicates, 38 NumberOfNonLiveVariables, 20374 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 494946/497016 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