/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-79.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 20:02:02,069 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 20:02:02,136 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 20:02:02,140 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 20:02:02,141 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 20:02:02,163 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 20:02:02,164 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 20:02:02,164 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 20:02:02,164 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 20:02:02,167 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 20:02:02,167 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 20:02:02,168 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 20:02:02,168 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 20:02:02,169 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 20:02:02,169 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 20:02:02,170 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 20:02:02,170 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 20:02:02,170 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 20:02:02,170 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 20:02:02,170 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 20:02:02,170 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 20:02:02,171 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 20:02:02,171 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 20:02:02,171 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 20:02:02,171 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 20:02:02,171 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 20:02:02,171 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 20:02:02,172 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 20:02:02,172 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 20:02:02,172 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 20:02:02,173 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 20:02:02,173 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 20:02:02,173 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:02:02,173 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 20:02:02,173 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 20:02:02,173 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 20:02:02,174 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 20:02:02,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 20:02:02,174 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 20:02:02,174 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 20:02:02,174 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 20:02:02,174 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 20:02:02,174 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 20:02:02,174 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 20:02:02,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 20:02:02,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 20:02:02,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 20:02:02,393 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 20:02:02,393 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 20:02:02,393 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-79.i [2023-12-15 20:02:03,492 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 20:02:03,726 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 20:02:03,727 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-79.i [2023-12-15 20:02:03,741 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/737feba54/621e432eef764578a69dd65cc1f85add/FLAG02b029731 [2023-12-15 20:02:03,753 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/737feba54/621e432eef764578a69dd65cc1f85add [2023-12-15 20:02:03,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 20:02:03,756 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 20:02:03,758 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 20:02:03,758 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 20:02:03,761 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 20:02:03,761 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:02:03" (1/1) ... [2023-12-15 20:02:03,762 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10044a74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:03, skipping insertion in model container [2023-12-15 20:02:03,762 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:02:03" (1/1) ... [2023-12-15 20:02:03,810 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 20:02:03,951 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-79.i[916,929] [2023-12-15 20:02:04,148 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:02:04,180 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 20:02:04,189 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-79.i[916,929] [2023-12-15 20:02:04,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:02:04,259 INFO L206 MainTranslator]: Completed translation [2023-12-15 20:02:04,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:04 WrapperNode [2023-12-15 20:02:04,260 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 20:02:04,261 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 20:02:04,261 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 20:02:04,261 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 20:02:04,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:04" (1/1) ... [2023-12-15 20:02:04,299 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:04" (1/1) ... [2023-12-15 20:02:04,404 INFO L138 Inliner]: procedures = 26, calls = 135, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 819 [2023-12-15 20:02:04,405 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 20:02:04,406 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 20:02:04,406 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 20:02:04,406 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 20:02:04,415 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:04" (1/1) ... [2023-12-15 20:02:04,416 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:04" (1/1) ... [2023-12-15 20:02:04,430 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:04" (1/1) ... [2023-12-15 20:02:04,476 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 20:02:04,476 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:04" (1/1) ... [2023-12-15 20:02:04,477 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:04" (1/1) ... [2023-12-15 20:02:04,510 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:04" (1/1) ... [2023-12-15 20:02:04,516 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:04" (1/1) ... [2023-12-15 20:02:04,523 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:04" (1/1) ... [2023-12-15 20:02:04,528 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:04" (1/1) ... [2023-12-15 20:02:04,575 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 20:02:04,576 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 20:02:04,576 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 20:02:04,576 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 20:02:04,577 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:04" (1/1) ... [2023-12-15 20:02:04,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:02:04,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:04,620 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 20:02:04,677 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 20:02:04,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 20:02:04,683 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 20:02:04,683 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 20:02:04,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 20:02:04,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 20:02:04,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 20:02:04,804 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 20:02:04,806 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 20:02:05,329 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 20:02:05,359 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 20:02:05,360 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 20:02:05,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:02:05 BoogieIcfgContainer [2023-12-15 20:02:05,360 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 20:02:05,362 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 20:02:05,362 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 20:02:05,364 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 20:02:05,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:02:03" (1/3) ... [2023-12-15 20:02:05,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2306c7b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:02:05, skipping insertion in model container [2023-12-15 20:02:05,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:02:04" (2/3) ... [2023-12-15 20:02:05,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2306c7b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:02:05, skipping insertion in model container [2023-12-15 20:02:05,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:02:05" (3/3) ... [2023-12-15 20:02:05,366 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-79.i [2023-12-15 20:02:05,379 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 20:02:05,380 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 20:02:05,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 20:02:05,420 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;@4ce87694, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 20:02:05,421 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 20:02:05,425 INFO L276 IsEmpty]: Start isEmpty. Operand has 329 states, 204 states have (on average 1.5686274509803921) internal successors, (320), 205 states have internal predecessors, (320), 122 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-15 20:02:05,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2023-12-15 20:02:05,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:05,452 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:02:05,453 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:05,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:05,457 INFO L85 PathProgramCache]: Analyzing trace with hash -2128666954, now seen corresponding path program 1 times [2023-12-15 20:02:05,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:05,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383405516] [2023-12-15 20:02:05,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:05,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:05,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:05,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383405516] [2023-12-15 20:02:05,827 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 20:02:05,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004145510] [2023-12-15 20:02:05,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:05,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:05,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:05,840 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 20:02:05,841 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 20:02:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:06,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 20:02:06,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:06,338 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 29282 trivial. 0 not checked. [2023-12-15 20:02:06,338 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:02:06,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004145510] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:02:06,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:02:06,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 20:02:06,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564960465] [2023-12-15 20:02:06,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:02:06,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 20:02:06,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:06,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 20:02:06,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:02:06,366 INFO L87 Difference]: Start difference. First operand has 329 states, 204 states have (on average 1.5686274509803921) internal successors, (320), 205 states have internal predecessors, (320), 122 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) Second operand has 2 states, 2 states have (on average 81.0) internal successors, (162), 2 states have internal predecessors, (162), 2 states have call successors, (122), 2 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 2 states have call successors, (122) [2023-12-15 20:02:06,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:06,425 INFO L93 Difference]: Finished difference Result 655 states and 1248 transitions. [2023-12-15 20:02:06,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 20:02:06,429 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 81.0) internal successors, (162), 2 states have internal predecessors, (162), 2 states have call successors, (122), 2 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 2 states have call successors, (122) Word has length 767 [2023-12-15 20:02:06,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:06,436 INFO L225 Difference]: With dead ends: 655 [2023-12-15 20:02:06,436 INFO L226 Difference]: Without dead ends: 327 [2023-12-15 20:02:06,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 766 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 20:02:06,448 INFO L413 NwaCegarLoop]: 553 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, 553 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 20:02:06,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 553 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:02:06,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-12-15 20:02:06,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2023-12-15 20:02:06,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 203 states have (on average 1.5369458128078817) internal successors, (312), 203 states have internal predecessors, (312), 122 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-15 20:02:06,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 556 transitions. [2023-12-15 20:02:06,532 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 556 transitions. Word has length 767 [2023-12-15 20:02:06,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:06,532 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 556 transitions. [2023-12-15 20:02:06,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 81.0) internal successors, (162), 2 states have internal predecessors, (162), 2 states have call successors, (122), 2 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 2 states have call successors, (122) [2023-12-15 20:02:06,533 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 556 transitions. [2023-12-15 20:02:06,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2023-12-15 20:02:06,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:06,554 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:02:06,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 20:02:06,760 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 20:02:06,761 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:06,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:06,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1709420047, now seen corresponding path program 1 times [2023-12-15 20:02:06,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:06,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793856458] [2023-12-15 20:02:06,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:06,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:06,928 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:06,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1857054902] [2023-12-15 20:02:06,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:06,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:06,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:06,949 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 20:02:06,984 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 20:02:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:07,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 20:02:07,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:07,548 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-12-15 20:02:07,548 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:02:07,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:07,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793856458] [2023-12-15 20:02:07,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:07,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857054902] [2023-12-15 20:02:07,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857054902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:02:07,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:02:07,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 20:02:07,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640545363] [2023-12-15 20:02:07,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:02:07,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 20:02:07,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:07,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 20:02:07,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:02:07,555 INFO L87 Difference]: Start difference. First operand 327 states and 556 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-15 20:02:07,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:07,662 INFO L93 Difference]: Finished difference Result 848 states and 1449 transitions. [2023-12-15 20:02:07,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 20:02:07,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 768 [2023-12-15 20:02:07,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:07,672 INFO L225 Difference]: With dead ends: 848 [2023-12-15 20:02:07,672 INFO L226 Difference]: Without dead ends: 522 [2023-12-15 20:02:07,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 768 GetRequests, 765 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:02:07,676 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 297 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:02:07,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 2044 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:02:07,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2023-12-15 20:02:07,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 519. [2023-12-15 20:02:07,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 349 states have (on average 1.5931232091690544) internal successors, (556), 350 states have internal predecessors, (556), 167 states have call successors, (167), 2 states have call predecessors, (167), 2 states have return successors, (167), 166 states have call predecessors, (167), 167 states have call successors, (167) [2023-12-15 20:02:07,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 890 transitions. [2023-12-15 20:02:07,739 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 890 transitions. Word has length 768 [2023-12-15 20:02:07,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:07,742 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 890 transitions. [2023-12-15 20:02:07,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-15 20:02:07,742 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 890 transitions. [2023-12-15 20:02:07,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2023-12-15 20:02:07,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:07,756 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:02:07,765 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 20:02:07,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 20:02:07,963 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:07,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:07,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1527709171, now seen corresponding path program 1 times [2023-12-15 20:02:07,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:07,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15666205] [2023-12-15 20:02:07,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:07,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:08,053 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:08,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [940082324] [2023-12-15 20:02:08,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:08,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:08,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:08,061 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 20:02:08,090 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 20:02:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:08,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:02:08,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:08,553 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-12-15 20:02:08,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:02:08,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:08,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15666205] [2023-12-15 20:02:08,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:08,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940082324] [2023-12-15 20:02:08,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940082324] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:02:08,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:02:08,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:02:08,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599890093] [2023-12-15 20:02:08,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:02:08,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:02:08,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:08,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:02:08,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:02:08,556 INFO L87 Difference]: Start difference. First operand 519 states and 890 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-15 20:02:08,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:08,603 INFO L93 Difference]: Finished difference Result 1361 states and 2329 transitions. [2023-12-15 20:02:08,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:02:08,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 768 [2023-12-15 20:02:08,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:08,609 INFO L225 Difference]: With dead ends: 1361 [2023-12-15 20:02:08,609 INFO L226 Difference]: Without dead ends: 843 [2023-12-15 20:02:08,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 767 GetRequests, 766 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 20:02:08,611 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 262 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:02:08,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 1089 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:02:08,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2023-12-15 20:02:08,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 839. [2023-12-15 20:02:08,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 585 states have (on average 1.6017094017094018) internal successors, (937), 588 states have internal predecessors, (937), 249 states have call successors, (249), 4 states have call predecessors, (249), 4 states have return successors, (249), 246 states have call predecessors, (249), 249 states have call successors, (249) [2023-12-15 20:02:08,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1435 transitions. [2023-12-15 20:02:08,654 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1435 transitions. Word has length 768 [2023-12-15 20:02:08,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:08,655 INFO L495 AbstractCegarLoop]: Abstraction has 839 states and 1435 transitions. [2023-12-15 20:02:08,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-15 20:02:08,656 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1435 transitions. [2023-12-15 20:02:08,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2023-12-15 20:02:08,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:08,661 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:02:08,672 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 20:02:08,872 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 20:02:08,873 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:08,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:08,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1709423629, now seen corresponding path program 1 times [2023-12-15 20:02:08,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:08,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115118114] [2023-12-15 20:02:08,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:08,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:08,935 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:08,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1595738837] [2023-12-15 20:02:08,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:08,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:08,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:08,937 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 20:02:08,939 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 20:02:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:09,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 20:02:09,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-12-15 20:02:09,337 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:02:09,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:09,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115118114] [2023-12-15 20:02:09,337 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:09,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595738837] [2023-12-15 20:02:09,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595738837] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:02:09,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:02:09,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:02:09,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202870935] [2023-12-15 20:02:09,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:02:09,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:02:09,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:09,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:02:09,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:02:09,339 INFO L87 Difference]: Start difference. First operand 839 states and 1435 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-15 20:02:09,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:09,422 INFO L93 Difference]: Finished difference Result 1700 states and 2892 transitions. [2023-12-15 20:02:09,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:02:09,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 769 [2023-12-15 20:02:09,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:09,440 INFO L225 Difference]: With dead ends: 1700 [2023-12-15 20:02:09,440 INFO L226 Difference]: Without dead ends: 862 [2023-12-15 20:02:09,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 768 GetRequests, 767 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 20:02:09,442 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 31 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1088 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 20:02:09,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1088 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:02:09,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2023-12-15 20:02:09,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 861. [2023-12-15 20:02:09,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 599 states have (on average 1.5809682804674456) internal successors, (947), 603 states have internal predecessors, (947), 253 states have call successors, (253), 8 states have call predecessors, (253), 8 states have return successors, (253), 249 states have call predecessors, (253), 253 states have call successors, (253) [2023-12-15 20:02:09,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1453 transitions. [2023-12-15 20:02:09,490 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1453 transitions. Word has length 769 [2023-12-15 20:02:09,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:09,491 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1453 transitions. [2023-12-15 20:02:09,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-15 20:02:09,491 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1453 transitions. [2023-12-15 20:02:09,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2023-12-15 20:02:09,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:09,497 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:02:09,509 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 20:02:09,706 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 20:02:09,707 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:09,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:09,707 INFO L85 PathProgramCache]: Analyzing trace with hash -461089689, now seen corresponding path program 1 times [2023-12-15 20:02:09,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:09,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512119647] [2023-12-15 20:02:09,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:09,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:09,765 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:09,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [247837113] [2023-12-15 20:02:09,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:09,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:09,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:09,767 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 20:02:09,790 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 20:02:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:10,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 20:02:10,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:10,675 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 13891 proven. 228 refuted. 0 times theorem prover too weak. 15405 trivial. 0 not checked. [2023-12-15 20:02:10,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:02:11,079 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 135 proven. 228 refuted. 0 times theorem prover too weak. 29161 trivial. 0 not checked. [2023-12-15 20:02:11,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:11,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512119647] [2023-12-15 20:02:11,080 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:11,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247837113] [2023-12-15 20:02:11,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247837113] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:02:11,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:02:11,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 20:02:11,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146936007] [2023-12-15 20:02:11,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:02:11,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 20:02:11,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:11,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 20:02:11,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 20:02:11,082 INFO L87 Difference]: Start difference. First operand 861 states and 1453 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 2 states have call successors, (198), 2 states have call predecessors, (198), 4 states have return successors, (199), 2 states have call predecessors, (199), 2 states have call successors, (199) [2023-12-15 20:02:11,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:11,612 INFO L93 Difference]: Finished difference Result 1373 states and 2298 transitions. [2023-12-15 20:02:11,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 20:02:11,613 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 2 states have call successors, (198), 2 states have call predecessors, (198), 4 states have return successors, (199), 2 states have call predecessors, (199), 2 states have call successors, (199) Word has length 770 [2023-12-15 20:02:11,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:11,616 INFO L225 Difference]: With dead ends: 1373 [2023-12-15 20:02:11,616 INFO L226 Difference]: Without dead ends: 519 [2023-12-15 20:02:11,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1542 GetRequests, 1532 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:02:11,619 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 306 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 20:02:11,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1019 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 20:02:11,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2023-12-15 20:02:11,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 509. [2023-12-15 20:02:11,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 335 states have (on average 1.5253731343283583) internal successors, (511), 337 states have internal predecessors, (511), 167 states have call successors, (167), 6 states have call predecessors, (167), 6 states have return successors, (167), 165 states have call predecessors, (167), 167 states have call successors, (167) [2023-12-15 20:02:11,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 845 transitions. [2023-12-15 20:02:11,644 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 845 transitions. Word has length 770 [2023-12-15 20:02:11,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:11,644 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 845 transitions. [2023-12-15 20:02:11,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 2 states have call successors, (198), 2 states have call predecessors, (198), 4 states have return successors, (199), 2 states have call predecessors, (199), 2 states have call successors, (199) [2023-12-15 20:02:11,645 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 845 transitions. [2023-12-15 20:02:11,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-12-15 20:02:11,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:11,650 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:02:11,675 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 20:02:11,857 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 20:02:11,858 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:11,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:11,858 INFO L85 PathProgramCache]: Analyzing trace with hash 236272368, now seen corresponding path program 1 times [2023-12-15 20:02:11,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:11,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28757792] [2023-12-15 20:02:11,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:11,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:11,908 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:11,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291893357] [2023-12-15 20:02:11,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:11,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:11,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:11,909 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 20:02:11,936 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 20:02:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:12,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 1744 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 20:02:12,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:12,424 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-12-15 20:02:12,424 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:02:12,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:12,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28757792] [2023-12-15 20:02:12,424 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:12,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291893357] [2023-12-15 20:02:12,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291893357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:02:12,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:02:12,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 20:02:12,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592480518] [2023-12-15 20:02:12,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:02:12,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 20:02:12,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:12,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 20:02:12,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 20:02:12,427 INFO L87 Difference]: Start difference. First operand 509 states and 845 transitions. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-15 20:02:13,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:13,253 INFO L93 Difference]: Finished difference Result 2503 states and 4149 transitions. [2023-12-15 20:02:13,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 20:02:13,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 773 [2023-12-15 20:02:13,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:13,263 INFO L225 Difference]: With dead ends: 2503 [2023-12-15 20:02:13,263 INFO L226 Difference]: Without dead ends: 2001 [2023-12-15 20:02:13,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 769 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-12-15 20:02:13,268 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 1486 mSDsluCounter, 3043 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 3990 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 20:02:13,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 3990 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 20:02:13,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2001 states. [2023-12-15 20:02:13,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2001 to 1271. [2023-12-15 20:02:13,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1271 states, 885 states have (on average 1.5740112994350282) internal successors, (1393), 889 states have internal predecessors, (1393), 371 states have call successors, (371), 14 states have call predecessors, (371), 14 states have return successors, (371), 367 states have call predecessors, (371), 371 states have call successors, (371) [2023-12-15 20:02:13,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 2135 transitions. [2023-12-15 20:02:13,395 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 2135 transitions. Word has length 773 [2023-12-15 20:02:13,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:13,395 INFO L495 AbstractCegarLoop]: Abstraction has 1271 states and 2135 transitions. [2023-12-15 20:02:13,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-15 20:02:13,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 2135 transitions. [2023-12-15 20:02:13,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-12-15 20:02:13,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:13,401 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:02:13,409 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 20:02:13,609 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 20:02:13,610 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:13,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:13,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1970376818, now seen corresponding path program 1 times [2023-12-15 20:02:13,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:13,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685962500] [2023-12-15 20:02:13,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:13,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:13,736 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:13,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1421480455] [2023-12-15 20:02:13,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:13,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:13,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:13,744 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 20:02:13,762 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 20:02:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:14,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 1742 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 20:02:14,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:14,967 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-12-15 20:02:14,968 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:02:14,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:14,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685962500] [2023-12-15 20:02:14,968 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:14,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421480455] [2023-12-15 20:02:14,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421480455] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:02:14,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:02:14,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 20:02:14,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077220841] [2023-12-15 20:02:14,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:02:14,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 20:02:14,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:14,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 20:02:14,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:02:14,970 INFO L87 Difference]: Start difference. First operand 1271 states and 2135 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-15 20:02:15,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:15,777 INFO L93 Difference]: Finished difference Result 5508 states and 9280 transitions. [2023-12-15 20:02:15,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 20:02:15,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 773 [2023-12-15 20:02:15,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:15,794 INFO L225 Difference]: With dead ends: 5508 [2023-12-15 20:02:15,795 INFO L226 Difference]: Without dead ends: 4244 [2023-12-15 20:02:15,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 769 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:02:15,800 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 1229 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 20:02:15,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1229 Valid, 1982 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 20:02:15,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4244 states. [2023-12-15 20:02:16,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4244 to 3781. [2023-12-15 20:02:16,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3781 states, 2719 states have (on average 1.5994851048179477) internal successors, (4349), 2727 states have internal predecessors, (4349), 1023 states have call successors, (1023), 38 states have call predecessors, (1023), 38 states have return successors, (1023), 1015 states have call predecessors, (1023), 1023 states have call successors, (1023) [2023-12-15 20:02:16,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3781 states to 3781 states and 6395 transitions. [2023-12-15 20:02:16,095 INFO L78 Accepts]: Start accepts. Automaton has 3781 states and 6395 transitions. Word has length 773 [2023-12-15 20:02:16,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:16,096 INFO L495 AbstractCegarLoop]: Abstraction has 3781 states and 6395 transitions. [2023-12-15 20:02:16,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-15 20:02:16,096 INFO L276 IsEmpty]: Start isEmpty. Operand 3781 states and 6395 transitions. [2023-12-15 20:02:16,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-12-15 20:02:16,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:16,102 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:02:16,110 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 20:02:16,310 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 20:02:16,311 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:16,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:16,311 INFO L85 PathProgramCache]: Analyzing trace with hash -82069521, now seen corresponding path program 1 times [2023-12-15 20:02:16,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:16,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360726262] [2023-12-15 20:02:16,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:16,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:16,359 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:16,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [848912994] [2023-12-15 20:02:16,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:16,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:16,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:16,361 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 20:02:16,388 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 20:02:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:16,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 1744 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 20:02:16,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:17,353 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-12-15 20:02:17,354 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:02:17,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:17,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360726262] [2023-12-15 20:02:17,354 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:17,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848912994] [2023-12-15 20:02:17,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848912994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:02:17,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:02:17,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 20:02:17,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570795145] [2023-12-15 20:02:17,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:02:17,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 20:02:17,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:17,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 20:02:17,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 20:02:17,356 INFO L87 Difference]: Start difference. First operand 3781 states and 6395 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 6 states have internal predecessors, (167), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-15 20:02:18,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:18,402 INFO L93 Difference]: Finished difference Result 7847 states and 13211 transitions. [2023-12-15 20:02:18,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 20:02:18,403 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 6 states have internal predecessors, (167), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 774 [2023-12-15 20:02:18,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:18,436 INFO L225 Difference]: With dead ends: 7847 [2023-12-15 20:02:18,436 INFO L226 Difference]: Without dead ends: 4073 [2023-12-15 20:02:18,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 768 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2023-12-15 20:02:18,444 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 1532 mSDsluCounter, 2023 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 821 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 2954 SdHoareTripleChecker+Invalid, 1731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 821 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 20:02:18,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1532 Valid, 2954 Invalid, 1731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [821 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 20:02:18,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4073 states. [2023-12-15 20:02:18,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4073 to 3781. [2023-12-15 20:02:18,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3781 states, 2719 states have (on average 1.5954394998161088) internal successors, (4338), 2727 states have internal predecessors, (4338), 1023 states have call successors, (1023), 38 states have call predecessors, (1023), 38 states have return successors, (1023), 1015 states have call predecessors, (1023), 1023 states have call successors, (1023) [2023-12-15 20:02:18,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3781 states to 3781 states and 6384 transitions. [2023-12-15 20:02:18,722 INFO L78 Accepts]: Start accepts. Automaton has 3781 states and 6384 transitions. Word has length 774 [2023-12-15 20:02:18,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:18,723 INFO L495 AbstractCegarLoop]: Abstraction has 3781 states and 6384 transitions. [2023-12-15 20:02:18,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 6 states have internal predecessors, (167), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-15 20:02:18,724 INFO L276 IsEmpty]: Start isEmpty. Operand 3781 states and 6384 transitions. [2023-12-15 20:02:18,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-12-15 20:02:18,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:18,730 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:02:18,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-15 20:02:18,938 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 20:02:18,938 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:18,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:18,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1507260792, now seen corresponding path program 1 times [2023-12-15 20:02:18,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:18,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268639413] [2023-12-15 20:02:18,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:18,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:19,001 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:19,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [312534914] [2023-12-15 20:02:19,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:19,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:19,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:19,003 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 20:02:19,016 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 20:02:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:19,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 1746 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 20:02:19,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:19,602 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 7401 proven. 51 refuted. 0 times theorem prover too weak. 22072 trivial. 0 not checked. [2023-12-15 20:02:19,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:02:19,869 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 312 proven. 51 refuted. 0 times theorem prover too weak. 29161 trivial. 0 not checked. [2023-12-15 20:02:19,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:19,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268639413] [2023-12-15 20:02:19,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:19,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312534914] [2023-12-15 20:02:19,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312534914] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:02:19,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:02:19,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 20:02:19,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294838579] [2023-12-15 20:02:19,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:02:19,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 20:02:19,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:19,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 20:02:19,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 20:02:19,875 INFO L87 Difference]: Start difference. First operand 3781 states and 6384 transitions. Second operand has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 2 states have call successors, (139), 2 states have call predecessors, (139), 4 states have return successors, (140), 2 states have call predecessors, (140), 2 states have call successors, (140) [2023-12-15 20:02:20,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:20,504 INFO L93 Difference]: Finished difference Result 7655 states and 12851 transitions. [2023-12-15 20:02:20,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 20:02:20,505 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 2 states have call successors, (139), 2 states have call predecessors, (139), 4 states have return successors, (140), 2 states have call predecessors, (140), 2 states have call successors, (140) Word has length 775 [2023-12-15 20:02:20,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:20,522 INFO L225 Difference]: With dead ends: 7655 [2023-12-15 20:02:20,522 INFO L226 Difference]: Without dead ends: 3881 [2023-12-15 20:02:20,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1552 GetRequests, 1542 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:02:20,534 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 638 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 20:02:20,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 1018 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 20:02:20,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3881 states. [2023-12-15 20:02:20,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3881 to 3805. [2023-12-15 20:02:20,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3805 states, 2737 states have (on average 1.5812933869199854) internal successors, (4328), 2745 states have internal predecessors, (4328), 1023 states have call successors, (1023), 44 states have call predecessors, (1023), 44 states have return successors, (1023), 1015 states have call predecessors, (1023), 1023 states have call successors, (1023) [2023-12-15 20:02:20,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3805 states to 3805 states and 6374 transitions. [2023-12-15 20:02:20,809 INFO L78 Accepts]: Start accepts. Automaton has 3805 states and 6374 transitions. Word has length 775 [2023-12-15 20:02:20,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:20,810 INFO L495 AbstractCegarLoop]: Abstraction has 3805 states and 6374 transitions. [2023-12-15 20:02:20,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 2 states have call successors, (139), 2 states have call predecessors, (139), 4 states have return successors, (140), 2 states have call predecessors, (140), 2 states have call successors, (140) [2023-12-15 20:02:20,810 INFO L276 IsEmpty]: Start isEmpty. Operand 3805 states and 6374 transitions. [2023-12-15 20:02:20,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-12-15 20:02:20,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:20,817 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:02:20,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-15 20:02:21,026 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 20:02:21,026 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:21,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:21,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1089864186, now seen corresponding path program 1 times [2023-12-15 20:02:21,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:21,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100538295] [2023-12-15 20:02:21,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:21,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:21,088 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:21,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1393515971] [2023-12-15 20:02:21,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:21,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:21,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:21,113 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 20:02:21,160 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 20:02:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:21,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 1747 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 20:02:21,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:21,744 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 8077 proven. 57 refuted. 0 times theorem prover too weak. 21390 trivial. 0 not checked. [2023-12-15 20:02:21,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:02:22,067 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 306 proven. 57 refuted. 0 times theorem prover too weak. 29161 trivial. 0 not checked. [2023-12-15 20:02:22,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:22,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100538295] [2023-12-15 20:02:22,068 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:22,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393515971] [2023-12-15 20:02:22,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393515971] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:02:22,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:02:22,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 20:02:22,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58221384] [2023-12-15 20:02:22,068 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:02:22,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 20:02:22,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:22,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 20:02:22,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 20:02:22,070 INFO L87 Difference]: Start difference. First operand 3805 states and 6374 transitions. Second operand has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 2 states have call successors, (141), 2 states have call predecessors, (141), 4 states have return successors, (142), 2 states have call predecessors, (142), 2 states have call successors, (142) [2023-12-15 20:02:22,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:22,634 INFO L93 Difference]: Finished difference Result 5842 states and 9734 transitions. [2023-12-15 20:02:22,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 20:02:22,635 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 2 states have call successors, (141), 2 states have call predecessors, (141), 4 states have return successors, (142), 2 states have call predecessors, (142), 2 states have call successors, (142) Word has length 775 [2023-12-15 20:02:22,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:22,642 INFO L225 Difference]: With dead ends: 5842 [2023-12-15 20:02:22,642 INFO L226 Difference]: Without dead ends: 2044 [2023-12-15 20:02:22,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1552 GetRequests, 1542 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:02:22,663 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 360 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 20:02:22,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 999 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 20:02:22,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2023-12-15 20:02:22,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 1825. [2023-12-15 20:02:22,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1825 states, 1264 states have (on average 1.5087025316455696) internal successors, (1907), 1269 states have internal predecessors, (1907), 534 states have call successors, (534), 26 states have call predecessors, (534), 26 states have return successors, (534), 529 states have call predecessors, (534), 534 states have call successors, (534) [2023-12-15 20:02:22,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 2975 transitions. [2023-12-15 20:02:22,829 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 2975 transitions. Word has length 775 [2023-12-15 20:02:22,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:22,830 INFO L495 AbstractCegarLoop]: Abstraction has 1825 states and 2975 transitions. [2023-12-15 20:02:22,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 2 states have call successors, (141), 2 states have call predecessors, (141), 4 states have return successors, (142), 2 states have call predecessors, (142), 2 states have call successors, (142) [2023-12-15 20:02:22,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 2975 transitions. [2023-12-15 20:02:22,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2023-12-15 20:02:22,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:22,836 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:02:22,846 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 20:02:23,043 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 20:02:23,043 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:23,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:23,044 INFO L85 PathProgramCache]: Analyzing trace with hash 404549786, now seen corresponding path program 1 times [2023-12-15 20:02:23,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:23,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702962747] [2023-12-15 20:02:23,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:23,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:23,091 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:23,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480797179] [2023-12-15 20:02:23,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:23,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:23,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:23,093 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 20:02:23,117 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 20:02:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:23,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 1745 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 20:02:23,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:25,017 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-12-15 20:02:25,017 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:02:25,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:25,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702962747] [2023-12-15 20:02:25,018 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:25,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480797179] [2023-12-15 20:02:25,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480797179] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:02:25,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:02:25,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:02:25,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077434428] [2023-12-15 20:02:25,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:02:25,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 20:02:25,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:25,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 20:02:25,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:02:25,020 INFO L87 Difference]: Start difference. First operand 1825 states and 2975 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 3 states have internal predecessors, (169), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-15 20:02:25,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:25,484 INFO L93 Difference]: Finished difference Result 4967 states and 8091 transitions. [2023-12-15 20:02:25,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 20:02:25,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 3 states have internal predecessors, (169), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 776 [2023-12-15 20:02:25,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:25,496 INFO L225 Difference]: With dead ends: 4967 [2023-12-15 20:02:25,496 INFO L226 Difference]: Without dead ends: 3149 [2023-12-15 20:02:25,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 776 GetRequests, 773 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:02:25,500 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 458 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:02:25,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 1613 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:02:25,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3149 states. [2023-12-15 20:02:25,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3149 to 2946. [2023-12-15 20:02:25,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2946 states, 2043 states have (on average 1.4958394517865883) internal successors, (3056), 2050 states have internal predecessors, (3056), 860 states have call successors, (860), 42 states have call predecessors, (860), 42 states have return successors, (860), 853 states have call predecessors, (860), 860 states have call successors, (860) [2023-12-15 20:02:25,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 4776 transitions. [2023-12-15 20:02:25,726 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 4776 transitions. Word has length 776 [2023-12-15 20:02:25,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:25,726 INFO L495 AbstractCegarLoop]: Abstraction has 2946 states and 4776 transitions. [2023-12-15 20:02:25,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 3 states have internal predecessors, (169), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-15 20:02:25,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 4776 transitions. [2023-12-15 20:02:25,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2023-12-15 20:02:25,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:25,732 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:02:25,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-15 20:02:25,940 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 20:02:25,941 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:25,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:25,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1471284700, now seen corresponding path program 1 times [2023-12-15 20:02:25,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:25,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368269681] [2023-12-15 20:02:25,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:25,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:25,990 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:25,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [831118637] [2023-12-15 20:02:25,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:25,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:25,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:25,991 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 20:02:26,020 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 20:02:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:26,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 1748 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-15 20:02:26,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:27,698 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 6141 proven. 321 refuted. 0 times theorem prover too weak. 23062 trivial. 0 not checked. [2023-12-15 20:02:27,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:02:28,657 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 42 proven. 321 refuted. 0 times theorem prover too weak. 29161 trivial. 0 not checked. [2023-12-15 20:02:28,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:28,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368269681] [2023-12-15 20:02:28,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:28,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831118637] [2023-12-15 20:02:28,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831118637] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:02:28,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:02:28,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-15 20:02:28,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708160945] [2023-12-15 20:02:28,658 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:02:28,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-15 20:02:28,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:28,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-15 20:02:28,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-12-15 20:02:28,660 INFO L87 Difference]: Start difference. First operand 2946 states and 4776 transitions. Second operand has 14 states, 14 states have (on average 24.357142857142858) internal successors, (341), 14 states have internal predecessors, (341), 4 states have call successors, (244), 3 states have call predecessors, (244), 5 states have return successors, (244), 4 states have call predecessors, (244), 4 states have call successors, (244) [2023-12-15 20:02:29,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:29,502 INFO L93 Difference]: Finished difference Result 3600 states and 5741 transitions. [2023-12-15 20:02:29,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 20:02:29,503 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 24.357142857142858) internal successors, (341), 14 states have internal predecessors, (341), 4 states have call successors, (244), 3 states have call predecessors, (244), 5 states have return successors, (244), 4 states have call predecessors, (244), 4 states have call successors, (244) Word has length 776 [2023-12-15 20:02:29,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:29,513 INFO L225 Difference]: With dead ends: 3600 [2023-12-15 20:02:29,513 INFO L226 Difference]: Without dead ends: 3086 [2023-12-15 20:02:29,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1560 GetRequests, 1538 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2023-12-15 20:02:29,515 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 1206 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 603 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 603 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 20:02:29,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1206 Valid, 1272 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [603 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 20:02:29,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3086 states. [2023-12-15 20:02:29,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3086 to 2990. [2023-12-15 20:02:29,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2990 states, 2076 states have (on average 1.485067437379576) internal successors, (3083), 2083 states have internal predecessors, (3083), 860 states have call successors, (860), 53 states have call predecessors, (860), 53 states have return successors, (860), 853 states have call predecessors, (860), 860 states have call successors, (860) [2023-12-15 20:02:29,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2990 states to 2990 states and 4803 transitions. [2023-12-15 20:02:29,770 INFO L78 Accepts]: Start accepts. Automaton has 2990 states and 4803 transitions. Word has length 776 [2023-12-15 20:02:29,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:29,771 INFO L495 AbstractCegarLoop]: Abstraction has 2990 states and 4803 transitions. [2023-12-15 20:02:29,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.357142857142858) internal successors, (341), 14 states have internal predecessors, (341), 4 states have call successors, (244), 3 states have call predecessors, (244), 5 states have return successors, (244), 4 states have call predecessors, (244), 4 states have call successors, (244) [2023-12-15 20:02:29,771 INFO L276 IsEmpty]: Start isEmpty. Operand 2990 states and 4803 transitions. [2023-12-15 20:02:29,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2023-12-15 20:02:29,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:29,779 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:02:29,790 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 20:02:29,986 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 20:02:29,987 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:29,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:29,988 INFO L85 PathProgramCache]: Analyzing trace with hash -2033051951, now seen corresponding path program 1 times [2023-12-15 20:02:29,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:29,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661599424] [2023-12-15 20:02:29,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:29,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:30,090 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:30,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [965301009] [2023-12-15 20:02:30,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:30,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:30,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:30,097 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 20:02:30,120 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 20:02:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:30,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 1746 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:02:30,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:30,643 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-12-15 20:02:30,643 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:02:30,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:30,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661599424] [2023-12-15 20:02:30,643 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:30,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965301009] [2023-12-15 20:02:30,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965301009] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:02:30,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:02:30,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:02:30,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964304516] [2023-12-15 20:02:30,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:02:30,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:02:30,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:30,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:02:30,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:02:30,646 INFO L87 Difference]: Start difference. First operand 2990 states and 4803 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-15 20:02:30,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:30,828 INFO L93 Difference]: Finished difference Result 5973 states and 9595 transitions. [2023-12-15 20:02:30,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:02:30,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 776 [2023-12-15 20:02:30,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:30,845 INFO L225 Difference]: With dead ends: 5973 [2023-12-15 20:02:30,845 INFO L226 Difference]: Without dead ends: 2990 [2023-12-15 20:02:30,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 775 GetRequests, 774 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 20:02:30,856 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 15 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:02:30,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1063 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:02:30,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2023-12-15 20:02:31,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 2990. [2023-12-15 20:02:31,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2990 states, 2076 states have (on average 1.4788053949903661) internal successors, (3070), 2083 states have internal predecessors, (3070), 860 states have call successors, (860), 53 states have call predecessors, (860), 53 states have return successors, (860), 853 states have call predecessors, (860), 860 states have call successors, (860) [2023-12-15 20:02:31,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2990 states to 2990 states and 4790 transitions. [2023-12-15 20:02:31,126 INFO L78 Accepts]: Start accepts. Automaton has 2990 states and 4790 transitions. Word has length 776 [2023-12-15 20:02:31,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:31,127 INFO L495 AbstractCegarLoop]: Abstraction has 2990 states and 4790 transitions. [2023-12-15 20:02:31,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-15 20:02:31,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2990 states and 4790 transitions. [2023-12-15 20:02:31,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2023-12-15 20:02:31,133 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:31,134 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:02:31,154 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 20:02:31,342 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 20:02:31,342 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:31,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:31,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1774886513, now seen corresponding path program 1 times [2023-12-15 20:02:31,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:31,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302877048] [2023-12-15 20:02:31,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:31,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:31,393 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:31,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [196603589] [2023-12-15 20:02:31,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:31,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:31,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:31,426 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 20:02:31,440 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 20:02:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:31,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 1746 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 20:02:31,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:33,147 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 8721 proven. 63 refuted. 0 times theorem prover too weak. 20740 trivial. 0 not checked. [2023-12-15 20:02:33,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:02:33,853 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 300 proven. 63 refuted. 0 times theorem prover too weak. 29161 trivial. 0 not checked. [2023-12-15 20:02:33,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:33,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302877048] [2023-12-15 20:02:33,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:33,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196603589] [2023-12-15 20:02:33,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196603589] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:02:33,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:02:33,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-15 20:02:33,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282547921] [2023-12-15 20:02:33,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:02:33,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-15 20:02:33,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:33,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-15 20:02:33,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-12-15 20:02:33,858 INFO L87 Difference]: Start difference. First operand 2990 states and 4790 transitions. Second operand has 18 states, 18 states have (on average 17.61111111111111) internal successors, (317), 18 states have internal predecessors, (317), 4 states have call successors, (244), 3 states have call predecessors, (244), 5 states have return successors, (244), 4 states have call predecessors, (244), 4 states have call successors, (244) [2023-12-15 20:02:40,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:40,693 INFO L93 Difference]: Finished difference Result 16440 states and 25974 transitions. [2023-12-15 20:02:40,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-15 20:02:40,693 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 17.61111111111111) internal successors, (317), 18 states have internal predecessors, (317), 4 states have call successors, (244), 3 states have call predecessors, (244), 5 states have return successors, (244), 4 states have call predecessors, (244), 4 states have call successors, (244) Word has length 776 [2023-12-15 20:02:40,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:40,722 INFO L225 Difference]: With dead ends: 16440 [2023-12-15 20:02:40,723 INFO L226 Difference]: Without dead ends: 13457 [2023-12-15 20:02:40,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1596 GetRequests, 1541 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=792, Invalid=2400, Unknown=0, NotChecked=0, Total=3192 [2023-12-15 20:02:40,731 INFO L413 NwaCegarLoop]: 1227 mSDtfsCounter, 6896 mSDsluCounter, 5078 mSDsCounter, 0 mSdLazyCounter, 5115 mSolverCounterSat, 3502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6999 SdHoareTripleChecker+Valid, 6305 SdHoareTripleChecker+Invalid, 8617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3502 IncrementalHoareTripleChecker+Valid, 5115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:02:40,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6999 Valid, 6305 Invalid, 8617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3502 Valid, 5115 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-15 20:02:40,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13457 states. [2023-12-15 20:02:41,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13457 to 8438. [2023-12-15 20:02:41,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8438 states, 5911 states have (on average 1.482321096261208) internal successors, (8762), 5925 states have internal predecessors, (8762), 2367 states have call successors, (2367), 159 states have call predecessors, (2367), 159 states have return successors, (2367), 2353 states have call predecessors, (2367), 2367 states have call successors, (2367) [2023-12-15 20:02:41,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8438 states to 8438 states and 13496 transitions. [2023-12-15 20:02:41,508 INFO L78 Accepts]: Start accepts. Automaton has 8438 states and 13496 transitions. Word has length 776 [2023-12-15 20:02:41,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:41,509 INFO L495 AbstractCegarLoop]: Abstraction has 8438 states and 13496 transitions. [2023-12-15 20:02:41,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.61111111111111) internal successors, (317), 18 states have internal predecessors, (317), 4 states have call successors, (244), 3 states have call predecessors, (244), 5 states have return successors, (244), 4 states have call predecessors, (244), 4 states have call successors, (244) [2023-12-15 20:02:41,510 INFO L276 IsEmpty]: Start isEmpty. Operand 8438 states and 13496 transitions. [2023-12-15 20:02:41,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2023-12-15 20:02:41,516 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:41,517 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:02:41,544 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 20:02:41,725 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 20:02:41,725 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:41,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:41,726 INFO L85 PathProgramCache]: Analyzing trace with hash -236546483, now seen corresponding path program 1 times [2023-12-15 20:02:41,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:41,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134676398] [2023-12-15 20:02:41,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:41,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:41,768 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:41,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1589324681] [2023-12-15 20:02:41,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:41,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:41,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:41,794 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:02:41,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 20:02:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:42,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 1747 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 20:02:42,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:43,497 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 18141 proven. 441 refuted. 0 times theorem prover too weak. 10942 trivial. 0 not checked. [2023-12-15 20:02:43,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:02:43,898 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 630 proven. 450 refuted. 0 times theorem prover too weak. 28444 trivial. 0 not checked. [2023-12-15 20:02:43,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:43,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134676398] [2023-12-15 20:02:43,899 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:43,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589324681] [2023-12-15 20:02:43,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589324681] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:02:43,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:02:43,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2023-12-15 20:02:43,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666957183] [2023-12-15 20:02:43,902 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:02:43,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-15 20:02:43,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:43,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-15 20:02:43,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2023-12-15 20:02:43,905 INFO L87 Difference]: Start difference. First operand 8438 states and 13496 transitions. Second operand has 19 states, 19 states have (on average 13.526315789473685) internal successors, (257), 19 states have internal predecessors, (257), 6 states have call successors, (182), 4 states have call predecessors, (182), 10 states have return successors, (183), 6 states have call predecessors, (183), 6 states have call successors, (183) [2023-12-15 20:02:45,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:02:45,505 INFO L93 Difference]: Finished difference Result 17427 states and 27494 transitions. [2023-12-15 20:02:45,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-15 20:02:45,506 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 13.526315789473685) internal successors, (257), 19 states have internal predecessors, (257), 6 states have call successors, (182), 4 states have call predecessors, (182), 10 states have return successors, (183), 6 states have call predecessors, (183), 6 states have call successors, (183) Word has length 776 [2023-12-15 20:02:45,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:02:45,524 INFO L225 Difference]: With dead ends: 17427 [2023-12-15 20:02:45,525 INFO L226 Difference]: Without dead ends: 8996 [2023-12-15 20:02:45,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1562 GetRequests, 1532 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=305, Invalid=625, Unknown=0, NotChecked=0, Total=930 [2023-12-15 20:02:45,541 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 325 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 20:02:45,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 1747 Invalid, 1705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1604 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 20:02:45,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8996 states. [2023-12-15 20:02:46,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8996 to 8618. [2023-12-15 20:02:46,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8618 states, 6046 states have (on average 1.4649354945418458) internal successors, (8857), 6060 states have internal predecessors, (8857), 2367 states have call successors, (2367), 204 states have call predecessors, (2367), 204 states have return successors, (2367), 2353 states have call predecessors, (2367), 2367 states have call successors, (2367) [2023-12-15 20:02:46,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8618 states to 8618 states and 13591 transitions. [2023-12-15 20:02:46,299 INFO L78 Accepts]: Start accepts. Automaton has 8618 states and 13591 transitions. Word has length 776 [2023-12-15 20:02:46,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:46,300 INFO L495 AbstractCegarLoop]: Abstraction has 8618 states and 13591 transitions. [2023-12-15 20:02:46,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.526315789473685) internal successors, (257), 19 states have internal predecessors, (257), 6 states have call successors, (182), 4 states have call predecessors, (182), 10 states have return successors, (183), 6 states have call predecessors, (183), 6 states have call successors, (183) [2023-12-15 20:02:46,300 INFO L276 IsEmpty]: Start isEmpty. Operand 8618 states and 13591 transitions. [2023-12-15 20:02:46,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2023-12-15 20:02:46,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:46,307 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:02:46,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-15 20:02:46,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 20:02:46,515 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:46,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:46,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1780978279, now seen corresponding path program 1 times [2023-12-15 20:02:46,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:46,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116570913] [2023-12-15 20:02:46,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:46,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:46,569 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:46,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1306362255] [2023-12-15 20:02:46,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:46,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:46,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:46,591 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:02:46,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 20:02:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:47,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 1748 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-15 20:02:47,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:50,403 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 19642 proven. 834 refuted. 0 times theorem prover too weak. 9048 trivial. 0 not checked. [2023-12-15 20:02:50,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:02:51,893 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 159 proven. 204 refuted. 0 times theorem prover too weak. 29161 trivial. 0 not checked. [2023-12-15 20:02:51,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:51,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116570913] [2023-12-15 20:02:51,893 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:51,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306362255] [2023-12-15 20:02:51,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306362255] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:02:51,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:02:51,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 26 [2023-12-15 20:02:51,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744258310] [2023-12-15 20:02:51,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:02:51,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-15 20:02:51,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:51,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-15 20:02:51,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2023-12-15 20:02:51,897 INFO L87 Difference]: Start difference. First operand 8618 states and 13591 transitions. Second operand has 26 states, 26 states have (on average 11.23076923076923) internal successors, (292), 26 states have internal predecessors, (292), 7 states have call successors, (190), 4 states have call predecessors, (190), 8 states have return successors, (192), 7 states have call predecessors, (192), 7 states have call successors, (192) Received shutdown request... [2023-12-15 20:03:06,730 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:03:06,730 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 20:03:06,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 20:03:06,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1556 GetRequests, 1528 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=245, Invalid=625, Unknown=0, NotChecked=0, Total=870 [2023-12-15 20:03:06,963 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 129 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2023-12-15 20:03:06,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 133 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2023-12-15 20:03:06,964 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 20:03:06,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-15 20:03:07,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 20:03:07,166 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (8618states) and FLOYD_HOARE automaton (currently 6 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (54 states constructed, input type IntersectNwa). [2023-12-15 20:03:07,169 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:03:07,171 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 20:03:07,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 08:03:07 BoogieIcfgContainer [2023-12-15 20:03:07,172 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 20:03:07,172 INFO L158 Benchmark]: Toolchain (without parser) took 63416.67ms. Allocated memory was 282.1MB in the beginning and 1.3GB in the end (delta: 999.3MB). Free memory was 225.9MB in the beginning and 1.1GB in the end (delta: -906.7MB). Peak memory consumption was 766.3MB. Max. memory is 8.0GB. [2023-12-15 20:03:07,173 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 176.2MB. Free memory is still 126.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 20:03:07,173 INFO L158 Benchmark]: CACSL2BoogieTranslator took 502.41ms. Allocated memory is still 282.1MB. Free memory was 225.5MB in the beginning and 192.8MB in the end (delta: 32.6MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2023-12-15 20:03:07,173 INFO L158 Benchmark]: Boogie Procedure Inliner took 144.52ms. Allocated memory is still 282.1MB. Free memory was 192.8MB in the beginning and 180.4MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-15 20:03:07,173 INFO L158 Benchmark]: Boogie Preprocessor took 169.40ms. Allocated memory is still 282.1MB. Free memory was 180.4MB in the beginning and 240.1MB in the end (delta: -59.7MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2023-12-15 20:03:07,173 INFO L158 Benchmark]: RCFGBuilder took 784.28ms. Allocated memory is still 282.1MB. Free memory was 240.1MB in the beginning and 155.1MB in the end (delta: 84.9MB). Peak memory consumption was 84.9MB. Max. memory is 8.0GB. [2023-12-15 20:03:07,173 INFO L158 Benchmark]: TraceAbstraction took 61810.00ms. Allocated memory was 282.1MB in the beginning and 1.3GB in the end (delta: 999.3MB). Free memory was 154.6MB in the beginning and 1.1GB in the end (delta: -978.0MB). Peak memory consumption was 695.0MB. Max. memory is 8.0GB. [2023-12-15 20:03:07,174 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 176.2MB. Free memory is still 126.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 502.41ms. Allocated memory is still 282.1MB. Free memory was 225.5MB in the beginning and 192.8MB in the end (delta: 32.6MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 144.52ms. Allocated memory is still 282.1MB. Free memory was 192.8MB in the beginning and 180.4MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 169.40ms. Allocated memory is still 282.1MB. Free memory was 180.4MB in the beginning and 240.1MB in the end (delta: -59.7MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * RCFGBuilder took 784.28ms. Allocated memory is still 282.1MB. Free memory was 240.1MB in the beginning and 155.1MB in the end (delta: 84.9MB). Peak memory consumption was 84.9MB. Max. memory is 8.0GB. * TraceAbstraction took 61810.00ms. Allocated memory was 282.1MB in the beginning and 1.3GB in the end (delta: 999.3MB). Free memory was 154.6MB in the beginning and 1.1GB in the end (delta: -978.0MB). Peak memory consumption was 695.0MB. 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 (8618states) and FLOYD_HOARE automaton (currently 6 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (54 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 329 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 61.8s, OverallIterations: 16, TraceHistogramMax: 122, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 30.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15582 SdHoareTripleChecker+Valid, 24.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15170 mSDsluCounter, 28869 SdHoareTripleChecker+Invalid, 22.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19223 mSDsCounter, 6403 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11752 IncrementalHoareTripleChecker+Invalid, 18155 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6403 mSolverCounterUnsat, 9646 mSDtfsCounter, 11752 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17872 GetRequests, 17672 SyntacticMatches, 5 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1427 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8618occurred in iteration=15, InterpolantAutomatonStates: 160, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.7s AutomataMinimizationTime, 15 MinimizatonAttempts, 7494 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.3s SsaConstructionTime, 3.4s SatisfiabilityAnalysisTime, 15.8s InterpolantComputationTime, 13136 NumberOfCodeBlocks, 13136 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 17771 ConstructedInterpolants, 15 QuantifiedInterpolants, 59837 SizeOfPredicates, 59 NumberOfNonLiveVariables, 27881 ConjunctsInSsa, 144 ConjunctsInUnsatCore, 23 InterpolantComputations, 9 PerfectInterpolantSequences, 675683/679052 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