/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-51.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:49:59,545 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:49:59,614 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:49:59,618 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:49:59,618 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:49:59,644 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:49:59,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:49:59,644 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:49:59,645 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:49:59,648 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:49:59,648 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:49:59,649 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:49:59,649 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:49:59,650 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:49:59,650 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:49:59,650 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:49:59,650 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:49:59,651 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:49:59,651 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:49:59,651 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:49:59,651 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:49:59,651 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:49:59,651 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:49:59,652 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:49:59,652 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:49:59,652 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:49:59,652 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:49:59,652 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:49:59,652 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:49:59,653 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:49:59,653 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:49:59,653 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:49:59,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:49:59,654 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:49:59,654 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:49:59,654 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:49:59,654 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:49:59,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:49:59,654 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:49:59,654 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:49:59,655 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:49:59,655 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:49:59,655 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:49:59,655 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:49:59,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:49:59,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:49:59,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:49:59,871 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:49:59,871 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:49:59,872 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-51.i [2023-12-15 19:50:01,010 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:50:01,332 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:50:01,332 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-51.i [2023-12-15 19:50:01,351 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55c256bff/e4b8eaad84e14e269553bf9fc8ba4acd/FLAGce8e3ddf9 [2023-12-15 19:50:01,366 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55c256bff/e4b8eaad84e14e269553bf9fc8ba4acd [2023-12-15 19:50:01,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:50:01,377 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:50:01,384 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:50:01,392 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:50:01,399 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:50:01,400 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:50:01" (1/1) ... [2023-12-15 19:50:01,401 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e65f6dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:01, skipping insertion in model container [2023-12-15 19:50:01,401 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:50:01" (1/1) ... [2023-12-15 19:50:01,474 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:50:01,677 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-51.i[916,929] [2023-12-15 19:50:01,895 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:50:01,938 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:50:01,946 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-51.i[916,929] [2023-12-15 19:50:02,077 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:50:02,098 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:50:02,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:02 WrapperNode [2023-12-15 19:50:02,098 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:50:02,099 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:50:02,099 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:50:02,099 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:50:02,108 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:02" (1/1) ... [2023-12-15 19:50:02,138 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:02" (1/1) ... [2023-12-15 19:50:02,254 INFO L138 Inliner]: procedures = 26, calls = 88, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 527 [2023-12-15 19:50:02,255 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:50:02,255 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:50:02,255 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:50:02,255 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:50:02,264 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:02" (1/1) ... [2023-12-15 19:50:02,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:02" (1/1) ... [2023-12-15 19:50:02,281 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:02" (1/1) ... [2023-12-15 19:50:02,324 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 19:50:02,325 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:02" (1/1) ... [2023-12-15 19:50:02,325 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:02" (1/1) ... [2023-12-15 19:50:02,342 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:02" (1/1) ... [2023-12-15 19:50:02,346 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:02" (1/1) ... [2023-12-15 19:50:02,380 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:02" (1/1) ... [2023-12-15 19:50:02,384 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:02" (1/1) ... [2023-12-15 19:50:02,389 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:50:02,390 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:50:02,390 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:50:02,390 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:50:02,391 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:02" (1/1) ... [2023-12-15 19:50:02,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:50:02,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:02,435 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 19:50:02,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 19:50:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:50:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 19:50:02,471 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 19:50:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:50:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:50:02,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:50:02,594 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:50:02,597 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:50:03,074 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:50:03,156 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:50:03,156 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:50:03,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:50:03 BoogieIcfgContainer [2023-12-15 19:50:03,157 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:50:03,158 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:50:03,158 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:50:03,160 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:50:03,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:50:01" (1/3) ... [2023-12-15 19:50:03,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561409e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:50:03, skipping insertion in model container [2023-12-15 19:50:03,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:02" (2/3) ... [2023-12-15 19:50:03,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561409e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:50:03, skipping insertion in model container [2023-12-15 19:50:03,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:50:03" (3/3) ... [2023-12-15 19:50:03,162 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-51.i [2023-12-15 19:50:03,174 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:50:03,175 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:50:03,221 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:50:03,227 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;@2bbc27f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:50:03,227 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:50:03,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 210 states, 132 states have (on average 1.606060606060606) internal successors, (212), 133 states have internal predecessors, (212), 75 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2023-12-15 19:50:03,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2023-12-15 19:50:03,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:03,263 INFO L195 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:03,264 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:03,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:03,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1295229926, now seen corresponding path program 1 times [2023-12-15 19:50:03,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:03,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893349053] [2023-12-15 19:50:03,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:03,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:03,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:03,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893349053] [2023-12-15 19:50:03,566 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 19:50:03,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777161700] [2023-12-15 19:50:03,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:03,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:03,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:03,569 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:50:03,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:50:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:03,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 1055 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 19:50:03,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:03,940 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 10952 trivial. 0 not checked. [2023-12-15 19:50:03,940 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:50:03,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777161700] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:50:03,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:50:03,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:50:03,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47155758] [2023-12-15 19:50:03,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:50:03,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:50:03,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:03,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:50:03,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:50:03,980 INFO L87 Difference]: Start difference. First operand has 210 states, 132 states have (on average 1.606060606060606) internal successors, (212), 133 states have internal predecessors, (212), 75 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) Second operand has 2 states, 2 states have (on average 49.5) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (75), 2 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 2 states have call successors, (75) [2023-12-15 19:50:04,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:04,047 INFO L93 Difference]: Finished difference Result 417 states and 797 transitions. [2023-12-15 19:50:04,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:50:04,050 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 49.5) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (75), 2 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 2 states have call successors, (75) Word has length 469 [2023-12-15 19:50:04,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:04,060 INFO L225 Difference]: With dead ends: 417 [2023-12-15 19:50:04,060 INFO L226 Difference]: Without dead ends: 208 [2023-12-15 19:50:04,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:50:04,069 INFO L413 NwaCegarLoop]: 352 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, 352 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:04,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 352 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:50:04,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-12-15 19:50:04,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2023-12-15 19:50:04,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 131 states have (on average 1.5648854961832062) internal successors, (205), 131 states have internal predecessors, (205), 75 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2023-12-15 19:50:04,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 355 transitions. [2023-12-15 19:50:04,136 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 355 transitions. Word has length 469 [2023-12-15 19:50:04,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:04,136 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 355 transitions. [2023-12-15 19:50:04,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 49.5) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (75), 2 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 2 states have call successors, (75) [2023-12-15 19:50:04,137 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 355 transitions. [2023-12-15 19:50:04,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2023-12-15 19:50:04,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:04,145 INFO L195 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:04,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 19:50:04,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 19:50:04,351 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:04,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:04,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1971868140, now seen corresponding path program 1 times [2023-12-15 19:50:04,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:04,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728121675] [2023-12-15 19:50:04,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:04,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:04,458 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:04,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1798373240] [2023-12-15 19:50:04,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:04,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:04,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:04,470 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:50:04,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:50:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:04,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 1055 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 19:50:04,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:04,965 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2023-12-15 19:50:04,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:50:04,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:04,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728121675] [2023-12-15 19:50:04,966 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:04,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798373240] [2023-12-15 19:50:04,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798373240] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:50:04,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:50:04,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 19:50:04,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751044445] [2023-12-15 19:50:04,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:50:04,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 19:50:04,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:04,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 19:50:04,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:50:04,971 INFO L87 Difference]: Start difference. First operand 208 states and 355 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2023-12-15 19:50:05,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:05,671 INFO L93 Difference]: Finished difference Result 1020 states and 1742 transitions. [2023-12-15 19:50:05,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 19:50:05,672 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 469 [2023-12-15 19:50:05,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:05,677 INFO L225 Difference]: With dead ends: 1020 [2023-12-15 19:50:05,677 INFO L226 Difference]: Without dead ends: 813 [2023-12-15 19:50:05,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-15 19:50:05,679 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 1200 mSDsluCounter, 1901 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:05,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1200 Valid, 2627 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:50:05,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2023-12-15 19:50:05,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 802. [2023-12-15 19:50:05,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 532 states have (on average 1.5902255639097744) internal successors, (846), 535 states have internal predecessors, (846), 264 states have call successors, (264), 5 states have call predecessors, (264), 5 states have return successors, (264), 261 states have call predecessors, (264), 264 states have call successors, (264) [2023-12-15 19:50:05,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1374 transitions. [2023-12-15 19:50:05,786 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1374 transitions. Word has length 469 [2023-12-15 19:50:05,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:05,787 INFO L495 AbstractCegarLoop]: Abstraction has 802 states and 1374 transitions. [2023-12-15 19:50:05,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2023-12-15 19:50:05,787 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1374 transitions. [2023-12-15 19:50:05,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2023-12-15 19:50:05,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:05,791 INFO L195 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:05,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 19:50:05,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 19:50:05,997 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:05,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:05,998 INFO L85 PathProgramCache]: Analyzing trace with hash -2074952662, now seen corresponding path program 1 times [2023-12-15 19:50:05,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:05,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941075688] [2023-12-15 19:50:05,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:05,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:06,060 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:06,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238424677] [2023-12-15 19:50:06,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:06,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:06,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:06,061 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:50:06,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 19:50:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:06,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 1053 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 19:50:06,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:06,317 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2023-12-15 19:50:06,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:50:06,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:06,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941075688] [2023-12-15 19:50:06,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:06,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238424677] [2023-12-15 19:50:06,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238424677] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:50:06,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:50:06,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 19:50:06,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703888883] [2023-12-15 19:50:06,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:50:06,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:50:06,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:06,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:50:06,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:50:06,320 INFO L87 Difference]: Start difference. First operand 802 states and 1374 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2023-12-15 19:50:07,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:07,015 INFO L93 Difference]: Finished difference Result 2817 states and 4801 transitions. [2023-12-15 19:50:07,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 19:50:07,016 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 469 [2023-12-15 19:50:07,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:07,026 INFO L225 Difference]: With dead ends: 2817 [2023-12-15 19:50:07,026 INFO L226 Difference]: Without dead ends: 2016 [2023-12-15 19:50:07,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:50:07,030 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 700 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:07,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1504 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:50:07,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2023-12-15 19:50:07,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1557. [2023-12-15 19:50:07,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1557 states, 1030 states have (on average 1.5747572815533981) internal successors, (1622), 1038 states have internal predecessors, (1622), 515 states have call successors, (515), 11 states have call predecessors, (515), 11 states have return successors, (515), 507 states have call predecessors, (515), 515 states have call successors, (515) [2023-12-15 19:50:07,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 2652 transitions. [2023-12-15 19:50:07,192 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 2652 transitions. Word has length 469 [2023-12-15 19:50:07,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:07,193 INFO L495 AbstractCegarLoop]: Abstraction has 1557 states and 2652 transitions. [2023-12-15 19:50:07,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2023-12-15 19:50:07,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 2652 transitions. [2023-12-15 19:50:07,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2023-12-15 19:50:07,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:07,197 INFO L195 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:07,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 19:50:07,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:07,404 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:07,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:07,404 INFO L85 PathProgramCache]: Analyzing trace with hash -448506221, now seen corresponding path program 1 times [2023-12-15 19:50:07,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:07,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937070415] [2023-12-15 19:50:07,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:07,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:07,438 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:07,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216213467] [2023-12-15 19:50:07,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:07,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:07,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:07,454 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:50:07,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 19:50:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:07,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 1053 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:50:07,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:07,682 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2023-12-15 19:50:07,682 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:50:07,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:07,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937070415] [2023-12-15 19:50:07,683 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:07,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216213467] [2023-12-15 19:50:07,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216213467] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:50:07,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:50:07,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:50:07,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22900774] [2023-12-15 19:50:07,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:50:07,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:50:07,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:07,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:50:07,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:50:07,685 INFO L87 Difference]: Start difference. First operand 1557 states and 2652 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2023-12-15 19:50:07,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:07,832 INFO L93 Difference]: Finished difference Result 4483 states and 7642 transitions. [2023-12-15 19:50:07,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:50:07,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 470 [2023-12-15 19:50:07,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:07,845 INFO L225 Difference]: With dead ends: 4483 [2023-12-15 19:50:07,845 INFO L226 Difference]: Without dead ends: 2927 [2023-12-15 19:50:07,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:50:07,850 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 246 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:07,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 687 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:50:07,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2023-12-15 19:50:08,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2919. [2023-12-15 19:50:08,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2919 states, 1983 states have (on average 1.583459404942007) internal successors, (3140), 2002 states have internal predecessors, (3140), 913 states have call successors, (913), 22 states have call predecessors, (913), 22 states have return successors, (913), 894 states have call predecessors, (913), 913 states have call successors, (913) [2023-12-15 19:50:08,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2919 states to 2919 states and 4966 transitions. [2023-12-15 19:50:08,040 INFO L78 Accepts]: Start accepts. Automaton has 2919 states and 4966 transitions. Word has length 470 [2023-12-15 19:50:08,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:08,041 INFO L495 AbstractCegarLoop]: Abstraction has 2919 states and 4966 transitions. [2023-12-15 19:50:08,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2023-12-15 19:50:08,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2919 states and 4966 transitions. [2023-12-15 19:50:08,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2023-12-15 19:50:08,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:08,045 INFO L195 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:08,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 19:50:08,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:08,252 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:08,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:08,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1832854863, now seen corresponding path program 1 times [2023-12-15 19:50:08,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:08,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782568601] [2023-12-15 19:50:08,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:08,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:08,285 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:08,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1000227142] [2023-12-15 19:50:08,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:08,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:08,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:08,287 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:50:08,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 19:50:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:08,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:50:08,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:08,555 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2023-12-15 19:50:08,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:50:08,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:08,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782568601] [2023-12-15 19:50:08,555 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:08,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000227142] [2023-12-15 19:50:08,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000227142] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:50:08,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:50:08,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:50:08,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994076303] [2023-12-15 19:50:08,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:50:08,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:50:08,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:08,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:50:08,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:50:08,557 INFO L87 Difference]: Start difference. First operand 2919 states and 4966 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2023-12-15 19:50:08,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:08,700 INFO L93 Difference]: Finished difference Result 6243 states and 10563 transitions. [2023-12-15 19:50:08,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:50:08,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 470 [2023-12-15 19:50:08,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:08,715 INFO L225 Difference]: With dead ends: 6243 [2023-12-15 19:50:08,715 INFO L226 Difference]: Without dead ends: 3325 [2023-12-15 19:50:08,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:50:08,724 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 233 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:08,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 694 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:50:08,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3325 states. [2023-12-15 19:50:08,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3325 to 3312. [2023-12-15 19:50:08,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3312 states, 2193 states have (on average 1.5540355677154583) internal successors, (3408), 2215 states have internal predecessors, (3408), 1083 states have call successors, (1083), 35 states have call predecessors, (1083), 35 states have return successors, (1083), 1061 states have call predecessors, (1083), 1083 states have call successors, (1083) [2023-12-15 19:50:08,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3312 states to 3312 states and 5574 transitions. [2023-12-15 19:50:08,945 INFO L78 Accepts]: Start accepts. Automaton has 3312 states and 5574 transitions. Word has length 470 [2023-12-15 19:50:08,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:08,946 INFO L495 AbstractCegarLoop]: Abstraction has 3312 states and 5574 transitions. [2023-12-15 19:50:08,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2023-12-15 19:50:08,946 INFO L276 IsEmpty]: Start isEmpty. Operand 3312 states and 5574 transitions. [2023-12-15 19:50:08,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2023-12-15 19:50:08,950 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:08,950 INFO L195 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:08,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 19:50:09,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:09,157 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:09,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:09,158 INFO L85 PathProgramCache]: Analyzing trace with hash 2054881483, now seen corresponding path program 1 times [2023-12-15 19:50:09,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:09,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726366251] [2023-12-15 19:50:09,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:09,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:09,187 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:09,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1143677608] [2023-12-15 19:50:09,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:09,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:09,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:09,189 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:50:09,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 19:50:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:09,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:50:09,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:09,458 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2023-12-15 19:50:09,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:50:09,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:09,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726366251] [2023-12-15 19:50:09,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:09,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143677608] [2023-12-15 19:50:09,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143677608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:50:09,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:50:09,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:50:09,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000600744] [2023-12-15 19:50:09,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:50:09,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:50:09,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:09,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:50:09,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:50:09,461 INFO L87 Difference]: Start difference. First operand 3312 states and 5574 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2023-12-15 19:50:09,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:09,771 INFO L93 Difference]: Finished difference Result 9792 states and 16474 transitions. [2023-12-15 19:50:09,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:50:09,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 470 [2023-12-15 19:50:09,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:09,799 INFO L225 Difference]: With dead ends: 9792 [2023-12-15 19:50:09,799 INFO L226 Difference]: Without dead ends: 6534 [2023-12-15 19:50:09,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:50:09,811 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 330 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:09,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 948 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:50:09,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6534 states. [2023-12-15 19:50:10,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6534 to 6532. [2023-12-15 19:50:10,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6532 states, 4329 states have (on average 1.541002541002541) internal successors, (6671), 4372 states have internal predecessors, (6671), 2132 states have call successors, (2132), 70 states have call predecessors, (2132), 70 states have return successors, (2132), 2089 states have call predecessors, (2132), 2132 states have call successors, (2132) [2023-12-15 19:50:10,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6532 states to 6532 states and 10935 transitions. [2023-12-15 19:50:10,243 INFO L78 Accepts]: Start accepts. Automaton has 6532 states and 10935 transitions. Word has length 470 [2023-12-15 19:50:10,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:10,243 INFO L495 AbstractCegarLoop]: Abstraction has 6532 states and 10935 transitions. [2023-12-15 19:50:10,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2023-12-15 19:50:10,244 INFO L276 IsEmpty]: Start isEmpty. Operand 6532 states and 10935 transitions. [2023-12-15 19:50:10,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2023-12-15 19:50:10,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:10,249 INFO L195 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:10,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 19:50:10,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:10,457 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:10,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:10,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1033813129, now seen corresponding path program 1 times [2023-12-15 19:50:10,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:10,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443859527] [2023-12-15 19:50:10,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:10,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:10,507 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:10,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [441390659] [2023-12-15 19:50:10,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:10,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:10,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:10,513 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:50:10,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 19:50:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:10,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:50:10,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:11,393 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 2202 proven. 198 refuted. 0 times theorem prover too weak. 8700 trivial. 0 not checked. [2023-12-15 19:50:11,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:50:11,720 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 24 proven. 198 refuted. 0 times theorem prover too weak. 10878 trivial. 0 not checked. [2023-12-15 19:50:11,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:11,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443859527] [2023-12-15 19:50:11,721 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:11,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441390659] [2023-12-15 19:50:11,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441390659] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:50:11,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:50:11,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-15 19:50:11,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342065569] [2023-12-15 19:50:11,721 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:50:11,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 19:50:11,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:11,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 19:50:11,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:50:11,724 INFO L87 Difference]: Start difference. First operand 6532 states and 10935 transitions. Second operand has 8 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 3 states have call successors, (141), 2 states have call predecessors, (141), 4 states have return successors, (142), 3 states have call predecessors, (142), 3 states have call successors, (142) [2023-12-15 19:50:12,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:12,331 INFO L93 Difference]: Finished difference Result 13346 states and 22069 transitions. [2023-12-15 19:50:12,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 19:50:12,331 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 3 states have call successors, (141), 2 states have call predecessors, (141), 4 states have return successors, (142), 3 states have call predecessors, (142), 3 states have call successors, (142) Word has length 470 [2023-12-15 19:50:12,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:12,376 INFO L225 Difference]: With dead ends: 13346 [2023-12-15 19:50:12,378 INFO L226 Difference]: Without dead ends: 6868 [2023-12-15 19:50:12,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 942 GetRequests, 932 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-15 19:50:12,398 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 253 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:12,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 657 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:50:12,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6868 states. [2023-12-15 19:50:12,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6868 to 6728. [2023-12-15 19:50:12,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6728 states, 4476 states have (on average 1.5125111706881145) internal successors, (6770), 4519 states have internal predecessors, (6770), 2132 states have call successors, (2132), 119 states have call predecessors, (2132), 119 states have return successors, (2132), 2089 states have call predecessors, (2132), 2132 states have call successors, (2132) [2023-12-15 19:50:12,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6728 states to 6728 states and 11034 transitions. [2023-12-15 19:50:12,849 INFO L78 Accepts]: Start accepts. Automaton has 6728 states and 11034 transitions. Word has length 470 [2023-12-15 19:50:12,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:12,850 INFO L495 AbstractCegarLoop]: Abstraction has 6728 states and 11034 transitions. [2023-12-15 19:50:12,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 3 states have call successors, (141), 2 states have call predecessors, (141), 4 states have return successors, (142), 3 states have call predecessors, (142), 3 states have call successors, (142) [2023-12-15 19:50:12,850 INFO L276 IsEmpty]: Start isEmpty. Operand 6728 states and 11034 transitions. [2023-12-15 19:50:12,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2023-12-15 19:50:12,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:12,855 INFO L195 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:12,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-15 19:50:13,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:13,064 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:13,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:13,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1713871499, now seen corresponding path program 1 times [2023-12-15 19:50:13,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:13,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436513478] [2023-12-15 19:50:13,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:13,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:13,098 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:13,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907782615] [2023-12-15 19:50:13,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:13,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:13,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:13,100 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:50:13,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 19:50:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:13,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 1049 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 19:50:13,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:13,736 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 4142 proven. 168 refuted. 0 times theorem prover too weak. 6790 trivial. 0 not checked. [2023-12-15 19:50:13,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:50:14,114 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 54 proven. 168 refuted. 0 times theorem prover too weak. 10878 trivial. 0 not checked. [2023-12-15 19:50:14,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:14,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436513478] [2023-12-15 19:50:14,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:14,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907782615] [2023-12-15 19:50:14,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907782615] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:50:14,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:50:14,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-15 19:50:14,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229368387] [2023-12-15 19:50:14,115 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:50:14,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 19:50:14,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:14,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 19:50:14,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:50:14,117 INFO L87 Difference]: Start difference. First operand 6728 states and 11034 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) [2023-12-15 19:50:15,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:15,427 INFO L93 Difference]: Finished difference Result 20930 states and 33685 transitions. [2023-12-15 19:50:15,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 19:50:15,428 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) Word has length 470 [2023-12-15 19:50:15,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:15,471 INFO L225 Difference]: With dead ends: 20930 [2023-12-15 19:50:15,471 INFO L226 Difference]: Without dead ends: 14260 [2023-12-15 19:50:15,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 950 GetRequests, 931 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-15 19:50:15,493 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 487 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:15,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 1556 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:50:15,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14260 states. [2023-12-15 19:50:16,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14260 to 7146. [2023-12-15 19:50:16,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7146 states, 4803 states have (on average 1.4778263585259213) internal successors, (7098), 4847 states have internal predecessors, (7098), 2170 states have call successors, (2170), 172 states have call predecessors, (2170), 172 states have return successors, (2170), 2126 states have call predecessors, (2170), 2170 states have call successors, (2170) [2023-12-15 19:50:16,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7146 states to 7146 states and 11438 transitions. [2023-12-15 19:50:16,279 INFO L78 Accepts]: Start accepts. Automaton has 7146 states and 11438 transitions. Word has length 470 [2023-12-15 19:50:16,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:16,280 INFO L495 AbstractCegarLoop]: Abstraction has 7146 states and 11438 transitions. [2023-12-15 19:50:16,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) [2023-12-15 19:50:16,280 INFO L276 IsEmpty]: Start isEmpty. Operand 7146 states and 11438 transitions. [2023-12-15 19:50:16,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2023-12-15 19:50:16,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:16,286 INFO L195 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:16,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 19:50:16,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 19:50:16,494 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:16,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:16,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1587002689, now seen corresponding path program 1 times [2023-12-15 19:50:16,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:16,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442295653] [2023-12-15 19:50:16,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:16,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:16,529 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:16,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821364312] [2023-12-15 19:50:16,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:16,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:16,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:16,531 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:50:16,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 19:50:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:16,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 19:50:16,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:17,620 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 5162 proven. 78 refuted. 0 times theorem prover too weak. 5860 trivial. 0 not checked. [2023-12-15 19:50:17,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:50:18,044 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2023-12-15 19:50:18,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:18,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442295653] [2023-12-15 19:50:18,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:18,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821364312] [2023-12-15 19:50:18,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821364312] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:50:18,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:50:18,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2023-12-15 19:50:18,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512668220] [2023-12-15 19:50:18,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:50:18,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:50:18,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:18,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:50:18,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:50:18,047 INFO L87 Difference]: Start difference. First operand 7146 states and 11438 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2023-12-15 19:50:19,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:19,029 INFO L93 Difference]: Finished difference Result 23014 states and 36616 transitions. [2023-12-15 19:50:19,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 19:50:19,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 471 [2023-12-15 19:50:19,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:19,066 INFO L225 Difference]: With dead ends: 23014 [2023-12-15 19:50:19,067 INFO L226 Difference]: Without dead ends: 15930 [2023-12-15 19:50:19,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 943 GetRequests, 932 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-12-15 19:50:19,082 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 480 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:19,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 1112 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:50:19,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15930 states. [2023-12-15 19:50:20,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15930 to 13256. [2023-12-15 19:50:20,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13256 states, 8691 states have (on average 1.4671499252099873) internal successors, (12751), 8776 states have internal predecessors, (12751), 4230 states have call successors, (4230), 334 states have call predecessors, (4230), 334 states have return successors, (4230), 4145 states have call predecessors, (4230), 4230 states have call successors, (4230) [2023-12-15 19:50:20,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13256 states to 13256 states and 21211 transitions. [2023-12-15 19:50:20,101 INFO L78 Accepts]: Start accepts. Automaton has 13256 states and 21211 transitions. Word has length 471 [2023-12-15 19:50:20,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:20,102 INFO L495 AbstractCegarLoop]: Abstraction has 13256 states and 21211 transitions. [2023-12-15 19:50:20,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2023-12-15 19:50:20,102 INFO L276 IsEmpty]: Start isEmpty. Operand 13256 states and 21211 transitions. [2023-12-15 19:50:20,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2023-12-15 19:50:20,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:20,107 INFO L195 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:20,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 19:50:20,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:20,314 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:20,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:20,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1688041860, now seen corresponding path program 1 times [2023-12-15 19:50:20,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:20,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641748234] [2023-12-15 19:50:20,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:20,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:20,344 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:20,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1329650194] [2023-12-15 19:50:20,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:20,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:20,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:20,346 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:50:20,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 19:50:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:20,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 1046 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:50:20,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:21,090 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2023-12-15 19:50:21,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:50:21,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:21,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641748234] [2023-12-15 19:50:21,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:21,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329650194] [2023-12-15 19:50:21,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329650194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:50:21,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:50:21,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:50:21,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843863998] [2023-12-15 19:50:21,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:50:21,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:50:21,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:21,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:50:21,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:50:21,094 INFO L87 Difference]: Start difference. First operand 13256 states and 21211 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2023-12-15 19:50:22,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:22,159 INFO L93 Difference]: Finished difference Result 33827 states and 54327 transitions. [2023-12-15 19:50:22,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:50:22,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 472 [2023-12-15 19:50:22,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:22,223 INFO L225 Difference]: With dead ends: 33827 [2023-12-15 19:50:22,223 INFO L226 Difference]: Without dead ends: 20633 [2023-12-15 19:50:22,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:50:22,252 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 128 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:22,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 683 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:50:22,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20633 states. [2023-12-15 19:50:23,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20633 to 20631. [2023-12-15 19:50:23,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20631 states, 13757 states have (on average 1.4845533183106783) internal successors, (20423), 13883 states have internal predecessors, (20423), 6369 states have call successors, (6369), 504 states have call predecessors, (6369), 504 states have return successors, (6369), 6243 states have call predecessors, (6369), 6369 states have call successors, (6369) [2023-12-15 19:50:23,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20631 states to 20631 states and 33161 transitions. [2023-12-15 19:50:23,713 INFO L78 Accepts]: Start accepts. Automaton has 20631 states and 33161 transitions. Word has length 472 [2023-12-15 19:50:23,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:23,714 INFO L495 AbstractCegarLoop]: Abstraction has 20631 states and 33161 transitions. [2023-12-15 19:50:23,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2023-12-15 19:50:23,714 INFO L276 IsEmpty]: Start isEmpty. Operand 20631 states and 33161 transitions. [2023-12-15 19:50:23,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2023-12-15 19:50:23,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:23,720 INFO L195 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:23,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 19:50:23,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 19:50:23,927 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:23,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:23,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1296262473, now seen corresponding path program 1 times [2023-12-15 19:50:23,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:23,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539070658] [2023-12-15 19:50:23,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:23,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:23,956 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:23,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [893438530] [2023-12-15 19:50:23,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:23,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:23,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:23,958 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:50:23,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 19:50:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:24,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 1046 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 19:50:24,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:24,646 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2023-12-15 19:50:24,646 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:50:24,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:24,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539070658] [2023-12-15 19:50:24,647 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:24,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893438530] [2023-12-15 19:50:24,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893438530] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:50:24,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:50:24,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:50:24,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105971604] [2023-12-15 19:50:24,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:50:24,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:50:24,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:24,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:50:24,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:50:24,648 INFO L87 Difference]: Start difference. First operand 20631 states and 33161 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2023-12-15 19:50:26,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:26,756 INFO L93 Difference]: Finished difference Result 53641 states and 86371 transitions. [2023-12-15 19:50:26,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 19:50:26,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 472 [2023-12-15 19:50:26,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:26,949 INFO L225 Difference]: With dead ends: 53641 [2023-12-15 19:50:26,949 INFO L226 Difference]: Without dead ends: 33171 [2023-12-15 19:50:27,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:50:27,006 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 319 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:27,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 1237 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:50:27,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33171 states. [2023-12-15 19:50:29,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33171 to 32879. [2023-12-15 19:50:29,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32879 states, 22609 states have (on average 1.5033836082975807) internal successors, (33990), 22798 states have internal predecessors, (33990), 9516 states have call successors, (9516), 753 states have call predecessors, (9516), 753 states have return successors, (9516), 9327 states have call predecessors, (9516), 9516 states have call successors, (9516) [2023-12-15 19:50:29,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32879 states to 32879 states and 53022 transitions. [2023-12-15 19:50:29,522 INFO L78 Accepts]: Start accepts. Automaton has 32879 states and 53022 transitions. Word has length 472 [2023-12-15 19:50:29,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:29,523 INFO L495 AbstractCegarLoop]: Abstraction has 32879 states and 53022 transitions. [2023-12-15 19:50:29,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2023-12-15 19:50:29,523 INFO L276 IsEmpty]: Start isEmpty. Operand 32879 states and 53022 transitions. [2023-12-15 19:50:29,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2023-12-15 19:50:29,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:29,530 INFO L195 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:29,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 19:50:29,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 19:50:29,737 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:29,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:29,737 INFO L85 PathProgramCache]: Analyzing trace with hash -2114020057, now seen corresponding path program 1 times [2023-12-15 19:50:29,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:29,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201968422] [2023-12-15 19:50:29,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:29,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:29,775 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:29,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [302075141] [2023-12-15 19:50:29,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:29,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:29,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:29,790 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:50:29,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 19:50:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:30,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 19:50:30,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:30,485 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2023-12-15 19:50:30,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:50:30,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:30,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201968422] [2023-12-15 19:50:30,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:30,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302075141] [2023-12-15 19:50:30,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302075141] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:50:30,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:50:30,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:50:30,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158794837] [2023-12-15 19:50:30,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:50:30,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:50:30,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:30,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:50:30,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:50:30,487 INFO L87 Difference]: Start difference. First operand 32879 states and 53022 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2023-12-15 19:50:32,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:32,645 INFO L93 Difference]: Finished difference Result 64487 states and 103692 transitions. [2023-12-15 19:50:32,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 19:50:32,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 473 [2023-12-15 19:50:32,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:32,809 INFO L225 Difference]: With dead ends: 64487 [2023-12-15 19:50:32,809 INFO L226 Difference]: Without dead ends: 33171 [2023-12-15 19:50:32,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:50:32,856 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 316 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:32,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1238 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:50:32,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33171 states. [2023-12-15 19:50:35,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33171 to 32879. [2023-12-15 19:50:35,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32879 states, 22609 states have (on average 1.5001990357822106) internal successors, (33918), 22798 states have internal predecessors, (33918), 9516 states have call successors, (9516), 753 states have call predecessors, (9516), 753 states have return successors, (9516), 9327 states have call predecessors, (9516), 9516 states have call successors, (9516) [2023-12-15 19:50:35,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32879 states to 32879 states and 52950 transitions. [2023-12-15 19:50:35,345 INFO L78 Accepts]: Start accepts. Automaton has 32879 states and 52950 transitions. Word has length 473 [2023-12-15 19:50:35,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:35,345 INFO L495 AbstractCegarLoop]: Abstraction has 32879 states and 52950 transitions. [2023-12-15 19:50:35,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2023-12-15 19:50:35,346 INFO L276 IsEmpty]: Start isEmpty. Operand 32879 states and 52950 transitions. [2023-12-15 19:50:35,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2023-12-15 19:50:35,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:35,368 INFO L195 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:35,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 19:50:35,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 19:50:35,575 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:35,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:35,576 INFO L85 PathProgramCache]: Analyzing trace with hash -525382868, now seen corresponding path program 1 times [2023-12-15 19:50:35,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:35,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851828106] [2023-12-15 19:50:35,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:35,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:35,624 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:35,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1829445283] [2023-12-15 19:50:35,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:35,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:35,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:35,641 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:50:35,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 19:50:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:35,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 19:50:35,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:36,826 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 6659 proven. 144 refuted. 0 times theorem prover too weak. 4297 trivial. 0 not checked. [2023-12-15 19:50:36,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:50:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 174 proven. 48 refuted. 0 times theorem prover too weak. 10878 trivial. 0 not checked. [2023-12-15 19:50:37,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:37,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851828106] [2023-12-15 19:50:37,320 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:37,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829445283] [2023-12-15 19:50:37,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829445283] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:50:37,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:50:37,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-12-15 19:50:37,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320262485] [2023-12-15 19:50:37,320 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:50:37,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-15 19:50:37,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:37,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-15 19:50:37,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2023-12-15 19:50:37,323 INFO L87 Difference]: Start difference. First operand 32879 states and 52950 transitions. Second operand has 19 states, 19 states have (on average 10.157894736842104) internal successors, (193), 19 states have internal predecessors, (193), 6 states have call successors, (150), 4 states have call predecessors, (150), 7 states have return successors, (150), 6 states have call predecessors, (150), 6 states have call successors, (150) [2023-12-15 19:50:50,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:50,676 INFO L93 Difference]: Finished difference Result 179641 states and 282703 transitions. [2023-12-15 19:50:50,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-15 19:50:50,677 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.157894736842104) internal successors, (193), 19 states have internal predecessors, (193), 6 states have call successors, (150), 4 states have call predecessors, (150), 7 states have return successors, (150), 6 states have call predecessors, (150), 6 states have call successors, (150) Word has length 474 [2023-12-15 19:50:50,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:51,112 INFO L225 Difference]: With dead ends: 179641 [2023-12-15 19:50:51,113 INFO L226 Difference]: Without dead ends: 148137 [2023-12-15 19:50:51,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 984 GetRequests, 937 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=734, Invalid=1618, Unknown=0, NotChecked=0, Total=2352 [2023-12-15 19:50:51,212 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 2068 mSDsluCounter, 4687 mSDsCounter, 0 mSdLazyCounter, 4933 mSolverCounterSat, 871 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2244 SdHoareTripleChecker+Valid, 5370 SdHoareTripleChecker+Invalid, 5804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 871 IncrementalHoareTripleChecker+Valid, 4933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:51,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2244 Valid, 5370 Invalid, 5804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [871 Valid, 4933 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-15 19:50:51,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148137 states. [2023-12-15 19:50:58,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148137 to 60924. [2023-12-15 19:50:58,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60924 states, 41823 states have (on average 1.4903282882624393) internal successors, (62330), 42180 states have internal predecessors, (62330), 17634 states have call successors, (17634), 1466 states have call predecessors, (17634), 1466 states have return successors, (17634), 17277 states have call predecessors, (17634), 17634 states have call successors, (17634) [2023-12-15 19:50:58,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60924 states to 60924 states and 97598 transitions. [2023-12-15 19:50:58,791 INFO L78 Accepts]: Start accepts. Automaton has 60924 states and 97598 transitions. Word has length 474 [2023-12-15 19:50:58,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:58,792 INFO L495 AbstractCegarLoop]: Abstraction has 60924 states and 97598 transitions. [2023-12-15 19:50:58,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.157894736842104) internal successors, (193), 19 states have internal predecessors, (193), 6 states have call successors, (150), 4 states have call predecessors, (150), 7 states have return successors, (150), 6 states have call predecessors, (150), 6 states have call successors, (150) [2023-12-15 19:50:58,792 INFO L276 IsEmpty]: Start isEmpty. Operand 60924 states and 97598 transitions. [2023-12-15 19:50:58,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2023-12-15 19:50:58,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:58,799 INFO L195 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:50:58,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 19:50:59,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 19:50:59,006 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:59,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:59,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1488955655, now seen corresponding path program 1 times [2023-12-15 19:50:59,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:59,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361109576] [2023-12-15 19:50:59,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:59,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:59,046 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:59,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720737727] [2023-12-15 19:50:59,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:59,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:59,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:59,047 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:50:59,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 19:50:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:59,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 19:50:59,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:59,823 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 5627 proven. 162 refuted. 0 times theorem prover too weak. 5311 trivial. 0 not checked. [2023-12-15 19:50:59,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:51:00,168 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 276 proven. 165 refuted. 0 times theorem prover too weak. 10659 trivial. 0 not checked. [2023-12-15 19:51:00,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:00,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361109576] [2023-12-15 19:51:00,168 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:51:00,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720737727] [2023-12-15 19:51:00,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720737727] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:51:00,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:51:00,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-12-15 19:51:00,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282651684] [2023-12-15 19:51:00,169 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:51:00,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-15 19:51:00,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:00,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-15 19:51:00,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-12-15 19:51:00,171 INFO L87 Difference]: Start difference. First operand 60924 states and 97598 transitions. Second operand has 14 states, 14 states have (on average 9.5) internal successors, (133), 14 states have internal predecessors, (133), 3 states have call successors, (104), 3 states have call predecessors, (104), 7 states have return successors, (105), 3 states have call predecessors, (105), 3 states have call successors, (105) Received shutdown request... [2023-12-15 19:51:05,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-15 19:51:05,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 962 GetRequests, 934 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=247, Invalid=509, Unknown=0, NotChecked=0, Total=756 [2023-12-15 19:51:05,096 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 1838 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 631 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1923 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 1598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 631 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:51:05,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1923 Valid, 1199 Invalid, 1598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [631 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 19:51:05,097 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:51:05,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-15 19:51:05,107 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:51:05,108 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 [2023-12-15 19:51:05,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:05,299 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (60924states) and FLOYD_HOARE automaton (currently 22 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (50758 states constructed, input type IntersectNwa). [2023-12-15 19:51:05,308 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:51:05,310 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:51:05,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:51:05 BoogieIcfgContainer [2023-12-15 19:51:05,314 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:51:05,315 INFO L158 Benchmark]: Toolchain (without parser) took 63936.96ms. Allocated memory was 278.9MB in the beginning and 5.2GB in the end (delta: 5.0GB). Free memory was 220.7MB in the beginning and 3.6GB in the end (delta: -3.3GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2023-12-15 19:51:05,315 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 205.5MB. Free memory is still 152.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:51:05,315 INFO L158 Benchmark]: CACSL2BoogieTranslator took 714.45ms. Allocated memory is still 278.9MB. Free memory was 220.2MB in the beginning and 197.0MB in the end (delta: 23.2MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-12-15 19:51:05,316 INFO L158 Benchmark]: Boogie Procedure Inliner took 155.69ms. Allocated memory is still 278.9MB. Free memory was 197.0MB in the beginning and 188.7MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-15 19:51:05,316 INFO L158 Benchmark]: Boogie Preprocessor took 134.32ms. Allocated memory is still 278.9MB. Free memory was 188.7MB in the beginning and 180.3MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-15 19:51:05,317 INFO L158 Benchmark]: RCFGBuilder took 766.79ms. Allocated memory is still 278.9MB. Free memory was 180.3MB in the beginning and 232.9MB in the end (delta: -52.6MB). Peak memory consumption was 60.2MB. Max. memory is 8.0GB. [2023-12-15 19:51:05,317 INFO L158 Benchmark]: TraceAbstraction took 62155.89ms. Allocated memory was 278.9MB in the beginning and 5.2GB in the end (delta: 5.0GB). Free memory was 232.4MB in the beginning and 3.6GB in the end (delta: -3.3GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2023-12-15 19:51:05,320 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 205.5MB. Free memory is still 152.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 714.45ms. Allocated memory is still 278.9MB. Free memory was 220.2MB in the beginning and 197.0MB in the end (delta: 23.2MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 155.69ms. Allocated memory is still 278.9MB. Free memory was 197.0MB in the beginning and 188.7MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 134.32ms. Allocated memory is still 278.9MB. Free memory was 188.7MB in the beginning and 180.3MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * RCFGBuilder took 766.79ms. Allocated memory is still 278.9MB. Free memory was 180.3MB in the beginning and 232.9MB in the end (delta: -52.6MB). Peak memory consumption was 60.2MB. Max. memory is 8.0GB. * TraceAbstraction took 62155.89ms. Allocated memory was 278.9MB in the beginning and 5.2GB in the end (delta: 5.0GB). Free memory was 232.4MB in the beginning and 3.6GB in the end (delta: -3.3GB). Peak memory consumption was 2.2GB. 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 (60924states) and FLOYD_HOARE automaton (currently 22 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (50758 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 210 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 62.1s, OverallIterations: 14, TraceHistogramMax: 75, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 30.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8886 SdHoareTripleChecker+Valid, 6.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8598 mSDsluCounter, 19864 SdHoareTripleChecker+Invalid, 5.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13731 mSDsCounter, 2803 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8531 IncrementalHoareTripleChecker+Invalid, 11334 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2803 mSolverCounterUnsat, 6133 mSDtfsCounter, 8531 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9018 GetRequests, 8877 SyntacticMatches, 4 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60924occurred in iteration=13, InterpolantAutomatonStates: 118, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 17.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 98220 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 7.0s InterpolantComputationTime, 7062 NumberOfCodeBlocks, 7062 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 8933 ConstructedInterpolants, 0 QuantifiedInterpolants, 24789 SizeOfPredicates, 37 NumberOfNonLiveVariables, 14702 ConjunctsInSsa, 92 ConjunctsInUnsatCore, 19 InterpolantComputations, 10 PerfectInterpolantSequences, 209571/210900 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