/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_operatoramount_amount500_file-39.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:18:54,980 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:18:55,042 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 21:18:55,046 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:18:55,047 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:18:55,064 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:18:55,065 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:18:55,065 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:18:55,065 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:18:55,068 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:18:55,068 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:18:55,069 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:18:55,069 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:18:55,070 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:18:55,070 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:18:55,071 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:18:55,071 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:18:55,071 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:18:55,071 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:18:55,071 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:18:55,071 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:18:55,072 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:18:55,072 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:18:55,072 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:18:55,072 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:18:55,072 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:18:55,073 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:18:55,073 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:18:55,073 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:18:55,073 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:18:55,074 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:18:55,074 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:18:55,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:18:55,074 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:18:55,074 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:18:55,075 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:18:55,075 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:18:55,075 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:18:55,075 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:18:55,075 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:18:55,075 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:18:55,075 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:18:55,076 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:18:55,076 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:18:55,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:18:55,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:18:55,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:18:55,270 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:18:55,270 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:18:55,271 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-39.i [2023-12-15 21:18:56,311 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:18:56,502 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:18:56,502 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-39.i [2023-12-15 21:18:56,510 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/227056d28/269034d5f5454b2ca2cb5e394d648115/FLAG1f3b0638b [2023-12-15 21:18:56,520 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/227056d28/269034d5f5454b2ca2cb5e394d648115 [2023-12-15 21:18:56,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:18:56,522 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:18:56,523 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:18:56,523 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:18:56,529 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:18:56,529 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:18:56" (1/1) ... [2023-12-15 21:18:56,530 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29f40b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:18:56, skipping insertion in model container [2023-12-15 21:18:56,530 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:18:56" (1/1) ... [2023-12-15 21:18:56,580 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:18:56,694 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_operatoramount_amount500_file-39.i[916,929] [2023-12-15 21:18:56,885 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:18:56,896 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:18:56,910 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_operatoramount_amount500_file-39.i[916,929] [2023-12-15 21:18:56,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:18:57,013 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:18:57,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:18:57 WrapperNode [2023-12-15 21:18:57,013 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:18:57,014 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:18:57,014 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:18:57,014 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:18:57,019 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:18:57" (1/1) ... [2023-12-15 21:18:57,052 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:18:57" (1/1) ... [2023-12-15 21:18:57,150 INFO L138 Inliner]: procedures = 26, calls = 75, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 833 [2023-12-15 21:18:57,151 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:18:57,152 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:18:57,152 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:18:57,152 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:18:57,159 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:18:57" (1/1) ... [2023-12-15 21:18:57,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:18:57" (1/1) ... [2023-12-15 21:18:57,178 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:18:57" (1/1) ... [2023-12-15 21:18:57,235 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 21:18:57,236 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:18:57" (1/1) ... [2023-12-15 21:18:57,236 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:18:57" (1/1) ... [2023-12-15 21:18:57,274 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:18:57" (1/1) ... [2023-12-15 21:18:57,279 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:18:57" (1/1) ... [2023-12-15 21:18:57,288 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:18:57" (1/1) ... [2023-12-15 21:18:57,298 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:18:57" (1/1) ... [2023-12-15 21:18:57,314 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:18:57,316 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:18:57,316 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:18:57,316 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:18:57,317 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:18:57" (1/1) ... [2023-12-15 21:18:57,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:18:57,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:18:57,337 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 21:18:57,350 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 21:18:57,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:18:57,354 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:18:57,355 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:18:57,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:18:57,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:18:57,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:18:57,460 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:18:57,462 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:18:58,345 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:18:58,400 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:18:58,401 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:18:58,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:18:58 BoogieIcfgContainer [2023-12-15 21:18:58,401 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:18:58,403 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:18:58,403 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:18:58,405 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:18:58,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:18:56" (1/3) ... [2023-12-15 21:18:58,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36cf0a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:18:58, skipping insertion in model container [2023-12-15 21:18:58,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:18:57" (2/3) ... [2023-12-15 21:18:58,407 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36cf0a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:18:58, skipping insertion in model container [2023-12-15 21:18:58,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:18:58" (3/3) ... [2023-12-15 21:18:58,409 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-39.i [2023-12-15 21:18:58,422 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:18:58,422 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:18:58,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:18:58,480 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;@14ca2c62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:18:58,481 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:18:58,488 INFO L276 IsEmpty]: Start isEmpty. Operand has 293 states, 228 states have (on average 1.5921052631578947) internal successors, (363), 229 states have internal predecessors, (363), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-15 21:18:58,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2023-12-15 21:18:58,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:18:58,520 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:18:58,521 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:18:58,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:18:58,527 INFO L85 PathProgramCache]: Analyzing trace with hash 705681699, now seen corresponding path program 1 times [2023-12-15 21:18:58,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:18:58,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227346881] [2023-12-15 21:18:58,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:18:58,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:18:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:18:58,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:18:58,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227346881] [2023-12-15 21:18:58,855 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:18:58,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967770302] [2023-12-15 21:18:58,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:18:58,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:18:58,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:18:58,858 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 21:18:58,872 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 21:18:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:18:59,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 1206 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:18:59,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:18:59,266 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 7442 trivial. 0 not checked. [2023-12-15 21:18:59,267 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:18:59,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967770302] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:18:59,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:18:59,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:18:59,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392620806] [2023-12-15 21:18:59,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:18:59,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:18:59,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:18:59,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:18:59,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:18:59,296 INFO L87 Difference]: Start difference. First operand has 293 states, 228 states have (on average 1.5921052631578947) internal successors, (363), 229 states have internal predecessors, (363), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 2 states have call successors, (62) [2023-12-15 21:18:59,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:18:59,367 INFO L93 Difference]: Finished difference Result 583 states and 1034 transitions. [2023-12-15 21:18:59,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:18:59,370 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 2 states have call successors, (62) Word has length 454 [2023-12-15 21:18:59,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:18:59,380 INFO L225 Difference]: With dead ends: 583 [2023-12-15 21:18:59,381 INFO L226 Difference]: Without dead ends: 291 [2023-12-15 21:18:59,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 453 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 21:18:59,389 INFO L413 NwaCegarLoop]: 479 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, 479 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 21:18:59,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 479 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:18:59,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-12-15 21:18:59,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2023-12-15 21:18:59,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 227 states have (on average 1.577092511013216) internal successors, (358), 227 states have internal predecessors, (358), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-15 21:18:59,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 482 transitions. [2023-12-15 21:18:59,454 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 482 transitions. Word has length 454 [2023-12-15 21:18:59,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:18:59,455 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 482 transitions. [2023-12-15 21:18:59,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 2 states have call successors, (62) [2023-12-15 21:18:59,455 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 482 transitions. [2023-12-15 21:18:59,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2023-12-15 21:18:59,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:18:59,461 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:18:59,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 21:18:59,667 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 21:18:59,668 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:18:59,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:18:59,669 INFO L85 PathProgramCache]: Analyzing trace with hash -746884457, now seen corresponding path program 1 times [2023-12-15 21:18:59,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:18:59,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615014443] [2023-12-15 21:18:59,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:18:59,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:18:59,747 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:18:59,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1802839528] [2023-12-15 21:18:59,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:18:59,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:18:59,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:18:59,749 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 21:18:59,778 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 21:19:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:19:00,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 1206 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:19:00,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:19:00,139 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-15 21:19:00,139 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:19:00,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:19:00,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615014443] [2023-12-15 21:19:00,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:19:00,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802839528] [2023-12-15 21:19:00,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802839528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:19:00,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:19:00,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:19:00,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149175932] [2023-12-15 21:19:00,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:19:00,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:19:00,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:19:00,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:19:00,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:19:00,143 INFO L87 Difference]: Start difference. First operand 291 states and 482 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:00,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:19:00,198 INFO L93 Difference]: Finished difference Result 868 states and 1438 transitions. [2023-12-15 21:19:00,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:19:00,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 454 [2023-12-15 21:19:00,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:19:00,202 INFO L225 Difference]: With dead ends: 868 [2023-12-15 21:19:00,202 INFO L226 Difference]: Without dead ends: 578 [2023-12-15 21:19:00,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 452 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 21:19:00,204 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 426 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:19:00,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 1110 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:19:00,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2023-12-15 21:19:00,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 576. [2023-12-15 21:19:00,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 449 states have (on average 1.5701559020044544) internal successors, (705), 449 states have internal predecessors, (705), 124 states have call successors, (124), 2 states have call predecessors, (124), 2 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-15 21:19:00,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 953 transitions. [2023-12-15 21:19:00,235 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 953 transitions. Word has length 454 [2023-12-15 21:19:00,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:19:00,236 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 953 transitions. [2023-12-15 21:19:00,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:00,236 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 953 transitions. [2023-12-15 21:19:00,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2023-12-15 21:19:00,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:19:00,241 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:00,250 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 21:19:00,441 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 21:19:00,441 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:19:00,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:19:00,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1417343914, now seen corresponding path program 1 times [2023-12-15 21:19:00,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:19:00,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486117503] [2023-12-15 21:19:00,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:00,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:19:00,539 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:19:00,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [135490431] [2023-12-15 21:19:00,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:00,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:19:00,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:19:00,548 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 21:19:00,573 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 21:19:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:19:00,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 1209 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:19:00,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:19:01,057 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-15 21:19:01,058 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:19:01,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:19:01,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486117503] [2023-12-15 21:19:01,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:19:01,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135490431] [2023-12-15 21:19:01,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135490431] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:19:01,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:19:01,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:19:01,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081859315] [2023-12-15 21:19:01,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:19:01,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:19:01,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:19:01,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:19:01,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:19:01,062 INFO L87 Difference]: Start difference. First operand 576 states and 953 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:01,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:19:01,227 INFO L93 Difference]: Finished difference Result 1510 states and 2493 transitions. [2023-12-15 21:19:01,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:19:01,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 455 [2023-12-15 21:19:01,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:19:01,237 INFO L225 Difference]: With dead ends: 1510 [2023-12-15 21:19:01,237 INFO L226 Difference]: Without dead ends: 935 [2023-12-15 21:19:01,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 453 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 21:19:01,241 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 264 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:19:01,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 980 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:19:01,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2023-12-15 21:19:01,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 931. [2023-12-15 21:19:01,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 766 states have (on average 1.5796344647519582) internal successors, (1210), 768 states have internal predecessors, (1210), 160 states have call successors, (160), 4 states have call predecessors, (160), 4 states have return successors, (160), 158 states have call predecessors, (160), 160 states have call successors, (160) [2023-12-15 21:19:01,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1530 transitions. [2023-12-15 21:19:01,302 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1530 transitions. Word has length 455 [2023-12-15 21:19:01,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:19:01,304 INFO L495 AbstractCegarLoop]: Abstraction has 931 states and 1530 transitions. [2023-12-15 21:19:01,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:01,305 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1530 transitions. [2023-12-15 21:19:01,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2023-12-15 21:19:01,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:19:01,310 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:01,319 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 21:19:01,519 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 21:19:01,520 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:19:01,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:19:01,520 INFO L85 PathProgramCache]: Analyzing trace with hash 523857576, now seen corresponding path program 1 times [2023-12-15 21:19:01,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:19:01,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51331324] [2023-12-15 21:19:01,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:01,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:19:01,589 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:19:01,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1077081421] [2023-12-15 21:19:01,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:01,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:19:01,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:19:01,591 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 21:19:01,644 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 21:19:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:19:01,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 1210 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:19:01,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:19:01,977 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-15 21:19:01,978 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:19:01,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:19:01,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51331324] [2023-12-15 21:19:01,978 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:19:01,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077081421] [2023-12-15 21:19:01,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077081421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:19:01,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:19:01,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:19:01,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887809735] [2023-12-15 21:19:01,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:19:01,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:19:01,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:19:01,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:19:01,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:19:01,981 INFO L87 Difference]: Start difference. First operand 931 states and 1530 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:02,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:19:02,055 INFO L93 Difference]: Finished difference Result 2791 states and 4588 transitions. [2023-12-15 21:19:02,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:19:02,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 455 [2023-12-15 21:19:02,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:19:02,065 INFO L225 Difference]: With dead ends: 2791 [2023-12-15 21:19:02,065 INFO L226 Difference]: Without dead ends: 1861 [2023-12-15 21:19:02,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 453 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 21:19:02,070 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 477 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:19:02,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 948 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:19:02,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2023-12-15 21:19:02,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1859. [2023-12-15 21:19:02,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1530 states have (on average 1.5751633986928104) internal successors, (2410), 1534 states have internal predecessors, (2410), 320 states have call successors, (320), 8 states have call predecessors, (320), 8 states have return successors, (320), 316 states have call predecessors, (320), 320 states have call successors, (320) [2023-12-15 21:19:02,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 3050 transitions. [2023-12-15 21:19:02,170 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 3050 transitions. Word has length 455 [2023-12-15 21:19:02,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:19:02,170 INFO L495 AbstractCegarLoop]: Abstraction has 1859 states and 3050 transitions. [2023-12-15 21:19:02,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:02,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 3050 transitions. [2023-12-15 21:19:02,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2023-12-15 21:19:02,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:19:02,178 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:02,188 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 21:19:02,386 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 21:19:02,386 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:19:02,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:19:02,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1910060970, now seen corresponding path program 1 times [2023-12-15 21:19:02,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:19:02,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683380151] [2023-12-15 21:19:02,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:02,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:19:02,461 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:19:02,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2023066281] [2023-12-15 21:19:02,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:02,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:19:02,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:19:02,462 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 21:19:02,488 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 21:19:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:19:02,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 1213 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 21:19:02,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:19:03,115 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-15 21:19:03,115 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:19:03,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:19:03,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683380151] [2023-12-15 21:19:03,116 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:19:03,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023066281] [2023-12-15 21:19:03,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023066281] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:19:03,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:19:03,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:19:03,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292434944] [2023-12-15 21:19:03,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:19:03,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:19:03,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:19:03,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:19:03,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:19:03,118 INFO L87 Difference]: Start difference. First operand 1859 states and 3050 transitions. Second operand has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:03,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:19:03,490 INFO L93 Difference]: Finished difference Result 6132 states and 10080 transitions. [2023-12-15 21:19:03,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 21:19:03,491 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 455 [2023-12-15 21:19:03,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:19:03,505 INFO L225 Difference]: With dead ends: 6132 [2023-12-15 21:19:03,505 INFO L226 Difference]: Without dead ends: 4274 [2023-12-15 21:19:03,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 21:19:03,510 INFO L413 NwaCegarLoop]: 1106 mSDtfsCounter, 1868 mSDsluCounter, 2138 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1868 SdHoareTripleChecker+Valid, 3244 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:19:03,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1868 Valid, 3244 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:19:03,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4274 states. [2023-12-15 21:19:03,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4274 to 1859. [2023-12-15 21:19:03,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1530 states have (on average 1.5699346405228758) internal successors, (2402), 1534 states have internal predecessors, (2402), 320 states have call successors, (320), 8 states have call predecessors, (320), 8 states have return successors, (320), 316 states have call predecessors, (320), 320 states have call successors, (320) [2023-12-15 21:19:03,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 3042 transitions. [2023-12-15 21:19:03,647 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 3042 transitions. Word has length 455 [2023-12-15 21:19:03,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:19:03,648 INFO L495 AbstractCegarLoop]: Abstraction has 1859 states and 3042 transitions. [2023-12-15 21:19:03,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:03,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 3042 transitions. [2023-12-15 21:19:03,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2023-12-15 21:19:03,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:19:03,654 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:03,668 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 21:19:03,861 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 21:19:03,862 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:19:03,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:19:03,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1964453868, now seen corresponding path program 1 times [2023-12-15 21:19:03,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:19:03,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165701086] [2023-12-15 21:19:03,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:03,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:19:03,909 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:19:03,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1126018546] [2023-12-15 21:19:03,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:03,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:19:03,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:19:03,910 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 21:19:03,936 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 21:19:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:19:04,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 1212 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:19:04,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:19:04,556 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-15 21:19:04,556 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:19:04,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:19:04,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165701086] [2023-12-15 21:19:04,557 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:19:04,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126018546] [2023-12-15 21:19:04,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126018546] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:19:04,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:19:04,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:19:04,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838110772] [2023-12-15 21:19:04,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:19:04,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:19:04,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:19:04,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:19:04,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:19:04,559 INFO L87 Difference]: Start difference. First operand 1859 states and 3042 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:04,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:19:04,682 INFO L93 Difference]: Finished difference Result 5563 states and 9104 transitions. [2023-12-15 21:19:04,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:19:04,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 455 [2023-12-15 21:19:04,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:19:04,696 INFO L225 Difference]: With dead ends: 5563 [2023-12-15 21:19:04,696 INFO L226 Difference]: Without dead ends: 3705 [2023-12-15 21:19:04,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 453 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 21:19:04,701 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 301 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:19:04,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 1174 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:19:04,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3705 states. [2023-12-15 21:19:04,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3705 to 3701. [2023-12-15 21:19:04,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3701 states, 3044 states have (on average 1.567017082785808) internal successors, (4770), 3052 states have internal predecessors, (4770), 640 states have call successors, (640), 16 states have call predecessors, (640), 16 states have return successors, (640), 632 states have call predecessors, (640), 640 states have call successors, (640) [2023-12-15 21:19:04,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3701 states to 3701 states and 6050 transitions. [2023-12-15 21:19:04,918 INFO L78 Accepts]: Start accepts. Automaton has 3701 states and 6050 transitions. Word has length 455 [2023-12-15 21:19:04,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:19:04,920 INFO L495 AbstractCegarLoop]: Abstraction has 3701 states and 6050 transitions. [2023-12-15 21:19:04,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:04,920 INFO L276 IsEmpty]: Start isEmpty. Operand 3701 states and 6050 transitions. [2023-12-15 21:19:04,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2023-12-15 21:19:04,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:19:04,924 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:04,945 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 21:19:05,133 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 21:19:05,134 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:19:05,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:19:05,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1288276523, now seen corresponding path program 1 times [2023-12-15 21:19:05,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:19:05,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27794386] [2023-12-15 21:19:05,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:05,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:19:05,188 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:19:05,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1427154169] [2023-12-15 21:19:05,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:05,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:19:05,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:19:05,190 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 21:19:05,208 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 21:19:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:19:05,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 1209 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:19:05,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:19:05,600 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-15 21:19:05,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:19:05,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:19:05,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27794386] [2023-12-15 21:19:05,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:19:05,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427154169] [2023-12-15 21:19:05,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427154169] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:19:05,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:19:05,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:19:05,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817665232] [2023-12-15 21:19:05,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:19:05,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:19:05,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:19:05,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:19:05,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:19:05,602 INFO L87 Difference]: Start difference. First operand 3701 states and 6050 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:05,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:19:05,810 INFO L93 Difference]: Finished difference Result 7551 states and 12350 transitions. [2023-12-15 21:19:05,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:19:05,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 455 [2023-12-15 21:19:05,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:19:05,831 INFO L225 Difference]: With dead ends: 7551 [2023-12-15 21:19:05,832 INFO L226 Difference]: Without dead ends: 5693 [2023-12-15 21:19:05,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 452 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 21:19:05,837 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 527 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:19:05,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 1902 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:19:05,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5693 states. [2023-12-15 21:19:06,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5693 to 5537. [2023-12-15 21:19:06,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5537 states, 4552 states have (on average 1.5637082601054482) internal successors, (7118), 4564 states have internal predecessors, (7118), 960 states have call successors, (960), 24 states have call predecessors, (960), 24 states have return successors, (960), 948 states have call predecessors, (960), 960 states have call successors, (960) [2023-12-15 21:19:06,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5537 states to 5537 states and 9038 transitions. [2023-12-15 21:19:06,067 INFO L78 Accepts]: Start accepts. Automaton has 5537 states and 9038 transitions. Word has length 455 [2023-12-15 21:19:06,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:19:06,067 INFO L495 AbstractCegarLoop]: Abstraction has 5537 states and 9038 transitions. [2023-12-15 21:19:06,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:06,068 INFO L276 IsEmpty]: Start isEmpty. Operand 5537 states and 9038 transitions. [2023-12-15 21:19:06,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2023-12-15 21:19:06,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:19:06,073 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:06,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 21:19:06,294 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 21:19:06,294 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:19:06,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:19:06,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1949959571, now seen corresponding path program 1 times [2023-12-15 21:19:06,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:19:06,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102253369] [2023-12-15 21:19:06,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:06,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:19:06,359 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:19:06,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [350689000] [2023-12-15 21:19:06,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:06,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:19:06,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:19:06,370 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 21:19:06,382 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 21:19:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:19:06,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 1206 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:19:06,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:19:06,717 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-15 21:19:06,717 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:19:06,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:19:06,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102253369] [2023-12-15 21:19:06,718 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:19:06,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350689000] [2023-12-15 21:19:06,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350689000] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:19:06,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:19:06,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:19:06,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003194877] [2023-12-15 21:19:06,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:19:06,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:19:06,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:19:06,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:19:06,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:19:06,719 INFO L87 Difference]: Start difference. First operand 5537 states and 9038 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:07,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:19:07,105 INFO L93 Difference]: Finished difference Result 11069 states and 18072 transitions. [2023-12-15 21:19:07,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:19:07,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 455 [2023-12-15 21:19:07,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:19:07,142 INFO L225 Difference]: With dead ends: 11069 [2023-12-15 21:19:07,143 INFO L226 Difference]: Without dead ends: 7375 [2023-12-15 21:19:07,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 452 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 21:19:07,151 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 650 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:19:07,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 1375 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:19:07,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7375 states. [2023-12-15 21:19:07,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7375 to 5529. [2023-12-15 21:19:07,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5529 states, 4544 states have (on average 1.5629401408450705) internal successors, (7102), 4556 states have internal predecessors, (7102), 960 states have call successors, (960), 24 states have call predecessors, (960), 24 states have return successors, (960), 948 states have call predecessors, (960), 960 states have call successors, (960) [2023-12-15 21:19:07,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5529 states to 5529 states and 9022 transitions. [2023-12-15 21:19:07,491 INFO L78 Accepts]: Start accepts. Automaton has 5529 states and 9022 transitions. Word has length 455 [2023-12-15 21:19:07,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:19:07,492 INFO L495 AbstractCegarLoop]: Abstraction has 5529 states and 9022 transitions. [2023-12-15 21:19:07,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:07,492 INFO L276 IsEmpty]: Start isEmpty. Operand 5529 states and 9022 transitions. [2023-12-15 21:19:07,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-12-15 21:19:07,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:19:07,497 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:07,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 21:19:07,708 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 21:19:07,708 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:19:07,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:19:07,709 INFO L85 PathProgramCache]: Analyzing trace with hash -806217460, now seen corresponding path program 1 times [2023-12-15 21:19:07,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:19:07,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527880852] [2023-12-15 21:19:07,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:07,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:19:07,749 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:19:07,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1036751832] [2023-12-15 21:19:07,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:07,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:19:07,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:19:07,750 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 21:19:07,780 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 21:19:08,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:19:08,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 1213 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:19:08,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:19:08,352 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 3687 proven. 72 refuted. 0 times theorem prover too weak. 3805 trivial. 0 not checked. [2023-12-15 21:19:08,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:19:08,626 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 111 proven. 72 refuted. 0 times theorem prover too weak. 7381 trivial. 0 not checked. [2023-12-15 21:19:08,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:19:08,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527880852] [2023-12-15 21:19:08,627 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:19:08,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036751832] [2023-12-15 21:19:08,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036751832] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:19:08,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:19:08,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-15 21:19:08,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461196857] [2023-12-15 21:19:08,627 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:19:08,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:19:08,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:19:08,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:19:08,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:19:08,629 INFO L87 Difference]: Start difference. First operand 5529 states and 9022 transitions. Second operand has 8 states, 8 states have (on average 30.5) internal successors, (244), 8 states have internal predecessors, (244), 3 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) [2023-12-15 21:19:09,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:19:09,114 INFO L93 Difference]: Finished difference Result 11153 states and 18127 transitions. [2023-12-15 21:19:09,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 21:19:09,115 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 30.5) internal successors, (244), 8 states have internal predecessors, (244), 3 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) Word has length 456 [2023-12-15 21:19:09,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:19:09,128 INFO L225 Difference]: With dead ends: 11153 [2023-12-15 21:19:09,128 INFO L226 Difference]: Without dead ends: 5625 [2023-12-15 21:19:09,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 904 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:19:09,138 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 572 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:19:09,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 1050 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:19:09,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5625 states. [2023-12-15 21:19:09,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5625 to 5577. [2023-12-15 21:19:09,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5577 states, 4580 states have (on average 1.5480349344978166) internal successors, (7090), 4592 states have internal predecessors, (7090), 960 states have call successors, (960), 36 states have call predecessors, (960), 36 states have return successors, (960), 948 states have call predecessors, (960), 960 states have call successors, (960) [2023-12-15 21:19:09,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5577 states to 5577 states and 9010 transitions. [2023-12-15 21:19:09,404 INFO L78 Accepts]: Start accepts. Automaton has 5577 states and 9010 transitions. Word has length 456 [2023-12-15 21:19:09,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:19:09,404 INFO L495 AbstractCegarLoop]: Abstraction has 5577 states and 9010 transitions. [2023-12-15 21:19:09,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.5) internal successors, (244), 8 states have internal predecessors, (244), 3 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) [2023-12-15 21:19:09,405 INFO L276 IsEmpty]: Start isEmpty. Operand 5577 states and 9010 transitions. [2023-12-15 21:19:09,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2023-12-15 21:19:09,411 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:19:09,411 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:09,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 21:19:09,618 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 21:19:09,618 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:19:09,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:19:09,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1849964703, now seen corresponding path program 1 times [2023-12-15 21:19:09,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:19:09,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090898981] [2023-12-15 21:19:09,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:09,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:19:09,670 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:19:09,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [818160311] [2023-12-15 21:19:09,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:09,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:19:09,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:19:09,672 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 21:19:09,692 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 21:19:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:19:10,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:19:10,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:19:10,328 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-15 21:19:10,328 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:19:10,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:19:10,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090898981] [2023-12-15 21:19:10,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:19:10,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818160311] [2023-12-15 21:19:10,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818160311] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:19:10,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:19:10,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:19:10,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535861730] [2023-12-15 21:19:10,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:19:10,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:19:10,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:19:10,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:19:10,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:19:10,330 INFO L87 Difference]: Start difference. First operand 5577 states and 9010 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:10,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:19:10,708 INFO L93 Difference]: Finished difference Result 16729 states and 27028 transitions. [2023-12-15 21:19:10,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:19:10,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 457 [2023-12-15 21:19:10,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:19:10,739 INFO L225 Difference]: With dead ends: 16729 [2023-12-15 21:19:10,739 INFO L226 Difference]: Without dead ends: 11153 [2023-12-15 21:19:10,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 455 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 21:19:10,753 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 237 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:19:10,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 1076 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:19:10,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11153 states. [2023-12-15 21:19:11,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11153 to 11127. [2023-12-15 21:19:11,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11127 states, 9134 states have (on average 1.5364571929056274) internal successors, (14034), 9158 states have internal predecessors, (14034), 1920 states have call successors, (1920), 72 states have call predecessors, (1920), 72 states have return successors, (1920), 1896 states have call predecessors, (1920), 1920 states have call successors, (1920) [2023-12-15 21:19:11,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11127 states to 11127 states and 17874 transitions. [2023-12-15 21:19:11,259 INFO L78 Accepts]: Start accepts. Automaton has 11127 states and 17874 transitions. Word has length 457 [2023-12-15 21:19:11,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:19:11,259 INFO L495 AbstractCegarLoop]: Abstraction has 11127 states and 17874 transitions. [2023-12-15 21:19:11,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:11,260 INFO L276 IsEmpty]: Start isEmpty. Operand 11127 states and 17874 transitions. [2023-12-15 21:19:11,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2023-12-15 21:19:11,267 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:19:11,267 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:11,276 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 21:19:11,476 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 21:19:11,477 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:19:11,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:19:11,477 INFO L85 PathProgramCache]: Analyzing trace with hash -826500713, now seen corresponding path program 1 times [2023-12-15 21:19:11,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:19:11,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399108412] [2023-12-15 21:19:11,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:11,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:19:11,554 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:19:11,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1239762111] [2023-12-15 21:19:11,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:11,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:19:11,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:19:11,568 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 21:19:11,569 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 21:19:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:19:11,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 21:19:11,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:19:12,111 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-15 21:19:12,112 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:19:12,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:19:12,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399108412] [2023-12-15 21:19:12,112 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:19:12,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239762111] [2023-12-15 21:19:12,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239762111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:19:12,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:19:12,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:19:12,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112681857] [2023-12-15 21:19:12,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:19:12,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:19:12,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:19:12,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:19:12,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:19:12,114 INFO L87 Difference]: Start difference. First operand 11127 states and 17874 transitions. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:13,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:19:13,385 INFO L93 Difference]: Finished difference Result 41685 states and 66656 transitions. [2023-12-15 21:19:13,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:19:13,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 457 [2023-12-15 21:19:13,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:19:13,453 INFO L225 Difference]: With dead ends: 41685 [2023-12-15 21:19:13,454 INFO L226 Difference]: Without dead ends: 28927 [2023-12-15 21:19:13,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:19:13,482 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 2215 mSDsluCounter, 2608 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2215 SdHoareTripleChecker+Valid, 3600 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 21:19:13,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2215 Valid, 3600 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 21:19:13,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28927 states. [2023-12-15 21:19:14,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28927 to 11587. [2023-12-15 21:19:14,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11587 states, 10026 states have (on average 1.5605425892679035) internal successors, (15646), 10026 states have internal predecessors, (15646), 1488 states have call successors, (1488), 72 states have call predecessors, (1488), 72 states have return successors, (1488), 1488 states have call predecessors, (1488), 1488 states have call successors, (1488) [2023-12-15 21:19:14,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11587 states to 11587 states and 18622 transitions. [2023-12-15 21:19:14,226 INFO L78 Accepts]: Start accepts. Automaton has 11587 states and 18622 transitions. Word has length 457 [2023-12-15 21:19:14,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:19:14,227 INFO L495 AbstractCegarLoop]: Abstraction has 11587 states and 18622 transitions. [2023-12-15 21:19:14,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:14,227 INFO L276 IsEmpty]: Start isEmpty. Operand 11587 states and 18622 transitions. [2023-12-15 21:19:14,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2023-12-15 21:19:14,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:19:14,232 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:14,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 21:19:14,439 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 21:19:14,440 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:19:14,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:19:14,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1509891797, now seen corresponding path program 1 times [2023-12-15 21:19:14,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:19:14,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840898930] [2023-12-15 21:19:14,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:14,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:19:14,485 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:19:14,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2048315772] [2023-12-15 21:19:14,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:14,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:19:14,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:19:14,487 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 21:19:14,508 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 21:19:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:19:14,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 1217 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 21:19:14,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:19:15,439 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-15 21:19:15,439 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:19:15,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:19:15,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840898930] [2023-12-15 21:19:15,439 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:19:15,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048315772] [2023-12-15 21:19:15,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048315772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:19:15,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:19:15,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 21:19:15,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417693055] [2023-12-15 21:19:15,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:19:15,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 21:19:15,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:19:15,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 21:19:15,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:19:15,441 INFO L87 Difference]: Start difference. First operand 11587 states and 18622 transitions. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 8 states have internal predecessors, (150), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:17,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:19:17,069 INFO L93 Difference]: Finished difference Result 52118 states and 83658 transitions. [2023-12-15 21:19:17,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 21:19:17,070 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 8 states have internal predecessors, (150), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 457 [2023-12-15 21:19:17,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:19:17,147 INFO L225 Difference]: With dead ends: 52118 [2023-12-15 21:19:17,148 INFO L226 Difference]: Without dead ends: 40532 [2023-12-15 21:19:17,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-12-15 21:19:17,171 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 1988 mSDsluCounter, 3220 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1988 SdHoareTripleChecker+Valid, 3844 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 21:19:17,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1988 Valid, 3844 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 21:19:17,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40532 states. [2023-12-15 21:19:18,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40532 to 31001. [2023-12-15 21:19:18,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31001 states, 27880 states have (on average 1.5810616929698709) internal successors, (44080), 27880 states have internal predecessors, (44080), 2976 states have call successors, (2976), 144 states have call predecessors, (2976), 144 states have return successors, (2976), 2976 states have call predecessors, (2976), 2976 states have call successors, (2976) [2023-12-15 21:19:18,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31001 states to 31001 states and 50032 transitions. [2023-12-15 21:19:18,414 INFO L78 Accepts]: Start accepts. Automaton has 31001 states and 50032 transitions. Word has length 457 [2023-12-15 21:19:18,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:19:18,415 INFO L495 AbstractCegarLoop]: Abstraction has 31001 states and 50032 transitions. [2023-12-15 21:19:18,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 8 states have internal predecessors, (150), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:18,415 INFO L276 IsEmpty]: Start isEmpty. Operand 31001 states and 50032 transitions. [2023-12-15 21:19:18,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2023-12-15 21:19:18,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:19:18,425 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:18,435 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 21:19:18,635 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 21:19:18,635 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:19:18,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:19:18,636 INFO L85 PathProgramCache]: Analyzing trace with hash 293738071, now seen corresponding path program 1 times [2023-12-15 21:19:18,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:19:18,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098212645] [2023-12-15 21:19:18,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:18,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:19:18,679 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:19:18,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [194970630] [2023-12-15 21:19:18,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:18,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:19:18,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:19:18,681 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 21:19:18,710 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 21:19:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:19:19,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 1217 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:19:19,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:19:19,366 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 3291 proven. 126 refuted. 0 times theorem prover too weak. 4147 trivial. 0 not checked. [2023-12-15 21:19:19,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:19:19,626 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 57 proven. 126 refuted. 0 times theorem prover too weak. 7381 trivial. 0 not checked. [2023-12-15 21:19:19,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:19:19,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098212645] [2023-12-15 21:19:19,626 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:19:19,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194970630] [2023-12-15 21:19:19,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194970630] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:19:19,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:19:19,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:19:19,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6908799] [2023-12-15 21:19:19,627 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:19:19,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:19:19,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:19:19,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:19:19,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:19:19,628 INFO L87 Difference]: Start difference. First operand 31001 states and 50032 transitions. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) [2023-12-15 21:19:20,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:19:20,678 INFO L93 Difference]: Finished difference Result 54045 states and 86869 transitions. [2023-12-15 21:19:20,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:19:20,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) Word has length 457 [2023-12-15 21:19:20,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:19:20,725 INFO L225 Difference]: With dead ends: 54045 [2023-12-15 21:19:20,725 INFO L226 Difference]: Without dead ends: 22537 [2023-12-15 21:19:20,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 916 GetRequests, 906 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 21:19:20,754 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 313 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:19:20,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 1032 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:19:20,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22537 states. [2023-12-15 21:19:21,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22537 to 20341. [2023-12-15 21:19:21,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20341 states, 17172 states have (on average 1.5468204053109713) internal successors, (26562), 17172 states have internal predecessors, (26562), 2976 states have call successors, (2976), 192 states have call predecessors, (2976), 192 states have return successors, (2976), 2976 states have call predecessors, (2976), 2976 states have call successors, (2976) [2023-12-15 21:19:21,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20341 states to 20341 states and 32514 transitions. [2023-12-15 21:19:21,771 INFO L78 Accepts]: Start accepts. Automaton has 20341 states and 32514 transitions. Word has length 457 [2023-12-15 21:19:21,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:19:21,773 INFO L495 AbstractCegarLoop]: Abstraction has 20341 states and 32514 transitions. [2023-12-15 21:19:21,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) [2023-12-15 21:19:21,773 INFO L276 IsEmpty]: Start isEmpty. Operand 20341 states and 32514 transitions. [2023-12-15 21:19:21,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2023-12-15 21:19:21,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:19:21,780 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:21,800 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 21:19:21,989 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 21:19:21,989 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:19:21,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:19:21,990 INFO L85 PathProgramCache]: Analyzing trace with hash 697970829, now seen corresponding path program 1 times [2023-12-15 21:19:21,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:19:21,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602970362] [2023-12-15 21:19:21,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:21,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:19:22,025 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:19:22,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418545153] [2023-12-15 21:19:22,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:22,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:19:22,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:19:22,026 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 21:19:22,029 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 21:19:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:19:22,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 1218 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:19:22,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:19:22,614 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 3463 proven. 120 refuted. 0 times theorem prover too weak. 3981 trivial. 0 not checked. [2023-12-15 21:19:22,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:19:22,858 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 63 proven. 120 refuted. 0 times theorem prover too weak. 7381 trivial. 0 not checked. [2023-12-15 21:19:22,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:19:22,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602970362] [2023-12-15 21:19:22,858 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:19:22,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418545153] [2023-12-15 21:19:22,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418545153] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:19:22,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:19:22,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:19:22,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657220480] [2023-12-15 21:19:22,861 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:19:22,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:19:22,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:19:22,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:19:22,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:19:22,862 INFO L87 Difference]: Start difference. First operand 20341 states and 32514 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2023-12-15 21:19:23,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:19:23,915 INFO L93 Difference]: Finished difference Result 41257 states and 65555 transitions. [2023-12-15 21:19:23,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:19:23,916 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) Word has length 458 [2023-12-15 21:19:23,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:19:23,965 INFO L225 Difference]: With dead ends: 41257 [2023-12-15 21:19:23,965 INFO L226 Difference]: Without dead ends: 20917 [2023-12-15 21:19:24,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 918 GetRequests, 908 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 21:19:24,002 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 621 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:19:24,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 1045 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:19:24,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20917 states. [2023-12-15 21:19:25,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20917 to 20533. [2023-12-15 21:19:25,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20533 states, 17316 states have (on average 1.5318780318780318) internal successors, (26526), 17316 states have internal predecessors, (26526), 2976 states have call successors, (2976), 240 states have call predecessors, (2976), 240 states have return successors, (2976), 2976 states have call predecessors, (2976), 2976 states have call successors, (2976) [2023-12-15 21:19:25,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20533 states to 20533 states and 32478 transitions. [2023-12-15 21:19:25,531 INFO L78 Accepts]: Start accepts. Automaton has 20533 states and 32478 transitions. Word has length 458 [2023-12-15 21:19:25,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:19:25,532 INFO L495 AbstractCegarLoop]: Abstraction has 20533 states and 32478 transitions. [2023-12-15 21:19:25,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2023-12-15 21:19:25,532 INFO L276 IsEmpty]: Start isEmpty. Operand 20533 states and 32478 transitions. [2023-12-15 21:19:25,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2023-12-15 21:19:25,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:19:25,541 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:25,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-15 21:19:25,748 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 21:19:25,749 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:19:25,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:19:25,749 INFO L85 PathProgramCache]: Analyzing trace with hash 111694607, now seen corresponding path program 1 times [2023-12-15 21:19:25,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:19:25,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647766895] [2023-12-15 21:19:25,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:25,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:19:25,790 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:19:25,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [581807796] [2023-12-15 21:19:25,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:25,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:19:25,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:19:25,791 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 21:19:25,826 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 21:19:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:19:26,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:19:26,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:19:26,224 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-15 21:19:26,224 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:19:26,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:19:26,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647766895] [2023-12-15 21:19:26,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:19:26,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581807796] [2023-12-15 21:19:26,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581807796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:19:26,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:19:26,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:19:26,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690012491] [2023-12-15 21:19:26,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:19:26,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:19:26,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:19:26,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:19:26,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:19:26,227 INFO L87 Difference]: Start difference. First operand 20533 states and 32478 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:26,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:19:26,890 INFO L93 Difference]: Finished difference Result 41065 states and 64955 transitions. [2023-12-15 21:19:26,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:19:26,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 458 [2023-12-15 21:19:26,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:19:26,928 INFO L225 Difference]: With dead ends: 41065 [2023-12-15 21:19:26,928 INFO L226 Difference]: Without dead ends: 20533 [2023-12-15 21:19:26,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:19:26,954 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 289 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:19:26,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 802 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:19:26,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20533 states. [2023-12-15 21:19:27,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20533 to 20533. [2023-12-15 21:19:27,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20533 states, 17316 states have (on average 1.5256410256410255) internal successors, (26418), 17316 states have internal predecessors, (26418), 2976 states have call successors, (2976), 240 states have call predecessors, (2976), 240 states have return successors, (2976), 2976 states have call predecessors, (2976), 2976 states have call successors, (2976) [2023-12-15 21:19:27,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20533 states to 20533 states and 32370 transitions. [2023-12-15 21:19:27,947 INFO L78 Accepts]: Start accepts. Automaton has 20533 states and 32370 transitions. Word has length 458 [2023-12-15 21:19:27,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:19:27,947 INFO L495 AbstractCegarLoop]: Abstraction has 20533 states and 32370 transitions. [2023-12-15 21:19:27,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:27,948 INFO L276 IsEmpty]: Start isEmpty. Operand 20533 states and 32370 transitions. [2023-12-15 21:19:27,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2023-12-15 21:19:27,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:19:27,954 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:27,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-15 21:19:28,154 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 21:19:28,155 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:19:28,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:19:28,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1965642291, now seen corresponding path program 1 times [2023-12-15 21:19:28,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:19:28,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936841335] [2023-12-15 21:19:28,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:28,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:19:28,192 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:19:28,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [137457077] [2023-12-15 21:19:28,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:28,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:19:28,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:19:28,194 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 21:19:28,200 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 21:19:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:19:28,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 1222 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 21:19:28,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:19:29,128 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-15 21:19:29,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:19:29,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:19:29,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936841335] [2023-12-15 21:19:29,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:19:29,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137457077] [2023-12-15 21:19:29,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137457077] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:19:29,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:19:29,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:19:29,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303226139] [2023-12-15 21:19:29,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:19:29,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:19:29,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:19:29,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:19:29,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:19:29,130 INFO L87 Difference]: Start difference. First operand 20533 states and 32370 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:30,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:19:30,437 INFO L93 Difference]: Finished difference Result 49453 states and 78009 transitions. [2023-12-15 21:19:30,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:19:30,438 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 458 [2023-12-15 21:19:30,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:19:30,483 INFO L225 Difference]: With dead ends: 49453 [2023-12-15 21:19:30,483 INFO L226 Difference]: Without dead ends: 28921 [2023-12-15 21:19:30,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:19:30,501 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 1035 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 2073 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 21:19:30,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 2073 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 21:19:30,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28921 states. [2023-12-15 21:19:31,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28921 to 25621. [2023-12-15 21:19:31,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25621 states, 21868 states have (on average 1.5308212913846717) internal successors, (33476), 21868 states have internal predecessors, (33476), 3472 states have call successors, (3472), 280 states have call predecessors, (3472), 280 states have return successors, (3472), 3472 states have call predecessors, (3472), 3472 states have call successors, (3472) [2023-12-15 21:19:31,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25621 states to 25621 states and 40420 transitions. [2023-12-15 21:19:31,573 INFO L78 Accepts]: Start accepts. Automaton has 25621 states and 40420 transitions. Word has length 458 [2023-12-15 21:19:31,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:19:31,573 INFO L495 AbstractCegarLoop]: Abstraction has 25621 states and 40420 transitions. [2023-12-15 21:19:31,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:31,574 INFO L276 IsEmpty]: Start isEmpty. Operand 25621 states and 40420 transitions. [2023-12-15 21:19:31,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2023-12-15 21:19:31,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:19:31,581 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:31,589 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 21:19:31,783 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 21:19:31,784 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:19:31,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:19:31,784 INFO L85 PathProgramCache]: Analyzing trace with hash 418282447, now seen corresponding path program 1 times [2023-12-15 21:19:31,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:19:31,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066868728] [2023-12-15 21:19:31,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:31,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:19:31,827 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:19:31,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1740753208] [2023-12-15 21:19:31,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:31,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:19:31,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:19:31,845 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:19:31,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-15 21:19:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:19:32,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 1223 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 21:19:32,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:19:32,668 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 4648 proven. 48 refuted. 0 times theorem prover too weak. 2868 trivial. 0 not checked. [2023-12-15 21:19:32,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:19:33,122 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 135 proven. 48 refuted. 0 times theorem prover too weak. 7381 trivial. 0 not checked. [2023-12-15 21:19:33,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:19:33,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066868728] [2023-12-15 21:19:33,122 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:19:33,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740753208] [2023-12-15 21:19:33,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740753208] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:19:33,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:19:33,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-15 21:19:33,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065675159] [2023-12-15 21:19:33,123 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:19:33,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-15 21:19:33,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:19:33,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-15 21:19:33,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-15 21:19:33,124 INFO L87 Difference]: Start difference. First operand 25621 states and 40420 transitions. Second operand has 14 states, 14 states have (on average 18.428571428571427) internal successors, (258), 14 states have internal predecessors, (258), 5 states have call successors, (91), 3 states have call predecessors, (91), 5 states have return successors, (91), 5 states have call predecessors, (91), 5 states have call successors, (91) [2023-12-15 21:19:34,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:19:34,818 INFO L93 Difference]: Finished difference Result 67067 states and 105499 transitions. [2023-12-15 21:19:34,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 21:19:34,819 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 18.428571428571427) internal successors, (258), 14 states have internal predecessors, (258), 5 states have call successors, (91), 3 states have call predecessors, (91), 5 states have return successors, (91), 5 states have call predecessors, (91), 5 states have call successors, (91) Word has length 458 [2023-12-15 21:19:34,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:19:34,886 INFO L225 Difference]: With dead ends: 67067 [2023-12-15 21:19:34,886 INFO L226 Difference]: Without dead ends: 41447 [2023-12-15 21:19:34,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 922 GetRequests, 902 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2023-12-15 21:19:34,933 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 1356 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1401 SdHoareTripleChecker+Valid, 2109 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:19:34,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1401 Valid, 2109 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 21:19:34,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41447 states. [2023-12-15 21:19:36,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41447 to 32155. [2023-12-15 21:19:36,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32155 states, 28346 states have (on average 1.5410992732660693) internal successors, (43684), 28346 states have internal predecessors, (43684), 3472 states have call successors, (3472), 336 states have call predecessors, (3472), 336 states have return successors, (3472), 3472 states have call predecessors, (3472), 3472 states have call successors, (3472) [2023-12-15 21:19:36,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32155 states to 32155 states and 50628 transitions. [2023-12-15 21:19:36,440 INFO L78 Accepts]: Start accepts. Automaton has 32155 states and 50628 transitions. Word has length 458 [2023-12-15 21:19:36,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:19:36,441 INFO L495 AbstractCegarLoop]: Abstraction has 32155 states and 50628 transitions. [2023-12-15 21:19:36,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.428571428571427) internal successors, (258), 14 states have internal predecessors, (258), 5 states have call successors, (91), 3 states have call predecessors, (91), 5 states have return successors, (91), 5 states have call predecessors, (91), 5 states have call successors, (91) [2023-12-15 21:19:36,441 INFO L276 IsEmpty]: Start isEmpty. Operand 32155 states and 50628 transitions. [2023-12-15 21:19:36,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2023-12-15 21:19:36,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:19:36,449 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:36,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-15 21:19:36,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-15 21:19:36,657 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:19:36,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:19:36,657 INFO L85 PathProgramCache]: Analyzing trace with hash 658522193, now seen corresponding path program 1 times [2023-12-15 21:19:36,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:19:36,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400441032] [2023-12-15 21:19:36,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:36,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:19:36,692 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:19:36,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [543721740] [2023-12-15 21:19:36,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:36,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:19:36,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:19:36,693 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:19:36,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-15 21:19:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:19:37,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 21:19:37,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:19:37,776 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-15 21:19:37,776 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:19:37,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:19:37,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400441032] [2023-12-15 21:19:37,776 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:19:37,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543721740] [2023-12-15 21:19:37,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543721740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:19:37,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:19:37,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 21:19:37,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391225684] [2023-12-15 21:19:37,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:19:37,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:19:37,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:19:37,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:19:37,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:19:37,778 INFO L87 Difference]: Start difference. First operand 32155 states and 50628 transitions. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 7 states have internal predecessors, (151), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:39,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:19:39,511 INFO L93 Difference]: Finished difference Result 90725 states and 143429 transitions. [2023-12-15 21:19:39,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 21:19:39,511 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 7 states have internal predecessors, (151), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 458 [2023-12-15 21:19:39,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:19:39,594 INFO L225 Difference]: With dead ends: 90725 [2023-12-15 21:19:39,594 INFO L226 Difference]: Without dead ends: 58571 [2023-12-15 21:19:39,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:19:39,627 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 1592 mSDsluCounter, 1847 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1592 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 21:19:39,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1592 Valid, 2330 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 21:19:39,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58571 states. [2023-12-15 21:19:41,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58571 to 47235. [2023-12-15 21:19:41,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47235 states, 43426 states have (on average 1.5557039561552988) internal successors, (67558), 43426 states have internal predecessors, (67558), 3472 states have call successors, (3472), 336 states have call predecessors, (3472), 336 states have return successors, (3472), 3472 states have call predecessors, (3472), 3472 states have call successors, (3472) [2023-12-15 21:19:41,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47235 states to 47235 states and 74502 transitions. [2023-12-15 21:19:41,353 INFO L78 Accepts]: Start accepts. Automaton has 47235 states and 74502 transitions. Word has length 458 [2023-12-15 21:19:41,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:19:41,354 INFO L495 AbstractCegarLoop]: Abstraction has 47235 states and 74502 transitions. [2023-12-15 21:19:41,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 7 states have internal predecessors, (151), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:41,354 INFO L276 IsEmpty]: Start isEmpty. Operand 47235 states and 74502 transitions. [2023-12-15 21:19:41,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2023-12-15 21:19:41,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:19:41,365 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:41,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-15 21:19:41,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-15 21:19:41,569 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:19:41,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:19:41,569 INFO L85 PathProgramCache]: Analyzing trace with hash 933281807, now seen corresponding path program 1 times [2023-12-15 21:19:41,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:19:41,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081736783] [2023-12-15 21:19:41,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:41,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:19:41,622 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:19:41,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [933890443] [2023-12-15 21:19:41,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:41,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:19:41,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:19:41,627 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:19:41,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-15 21:19:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:19:42,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 21:19:42,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:19:43,179 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 3787 proven. 102 refuted. 0 times theorem prover too weak. 3675 trivial. 0 not checked. [2023-12-15 21:19:43,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:19:43,324 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-15 21:19:43,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:19:43,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081736783] [2023-12-15 21:19:43,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:19:43,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933890443] [2023-12-15 21:19:43,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933890443] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:19:43,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:19:43,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2023-12-15 21:19:43,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850538358] [2023-12-15 21:19:43,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:19:43,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:19:43,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:19:43,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:19:43,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:19:43,326 INFO L87 Difference]: Start difference. First operand 47235 states and 74502 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:44,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:19:44,555 INFO L93 Difference]: Finished difference Result 119910 states and 189960 transitions. [2023-12-15 21:19:44,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:19:44,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 458 [2023-12-15 21:19:44,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:19:44,646 INFO L225 Difference]: With dead ends: 119910 [2023-12-15 21:19:44,646 INFO L226 Difference]: Without dead ends: 72676 [2023-12-15 21:19:44,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 905 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:19:44,686 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 168 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:19:44,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 2182 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:19:44,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72676 states. [2023-12-15 21:19:46,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72676 to 47703. [2023-12-15 21:19:46,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47703 states, 43894 states have (on average 1.5533330295712398) internal successors, (68182), 43894 states have internal predecessors, (68182), 3472 states have call successors, (3472), 336 states have call predecessors, (3472), 336 states have return successors, (3472), 3472 states have call predecessors, (3472), 3472 states have call successors, (3472) [2023-12-15 21:19:46,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47703 states to 47703 states and 75126 transitions. [2023-12-15 21:19:46,317 INFO L78 Accepts]: Start accepts. Automaton has 47703 states and 75126 transitions. Word has length 458 [2023-12-15 21:19:46,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:19:46,317 INFO L495 AbstractCegarLoop]: Abstraction has 47703 states and 75126 transitions. [2023-12-15 21:19:46,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:46,318 INFO L276 IsEmpty]: Start isEmpty. Operand 47703 states and 75126 transitions. [2023-12-15 21:19:46,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2023-12-15 21:19:46,328 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:19:46,328 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:46,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-15 21:19:46,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:19:46,536 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:19:46,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:19:46,537 INFO L85 PathProgramCache]: Analyzing trace with hash 911118193, now seen corresponding path program 1 times [2023-12-15 21:19:46,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:19:46,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316540415] [2023-12-15 21:19:46,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:46,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:19:46,573 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:19:46,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1075776130] [2023-12-15 21:19:46,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:46,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:19:46,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:19:46,575 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:19:46,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-15 21:19:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:19:47,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 1222 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 21:19:47,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:19:47,688 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-15 21:19:47,689 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:19:47,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:19:47,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316540415] [2023-12-15 21:19:47,689 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:19:47,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075776130] [2023-12-15 21:19:47,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075776130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:19:47,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:19:47,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:19:47,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487769860] [2023-12-15 21:19:47,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:19:47,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:19:47,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:19:47,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:19:47,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:19:47,691 INFO L87 Difference]: Start difference. First operand 47703 states and 75126 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:49,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:19:49,367 INFO L93 Difference]: Finished difference Result 125714 states and 197312 transitions. [2023-12-15 21:19:49,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:19:49,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 459 [2023-12-15 21:19:49,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:19:49,477 INFO L225 Difference]: With dead ends: 125714 [2023-12-15 21:19:49,478 INFO L226 Difference]: Without dead ends: 78012 [2023-12-15 21:19:49,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:19:49,531 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 604 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:19:49,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 1888 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:19:49,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78012 states. [2023-12-15 21:19:51,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78012 to 73599. [2023-12-15 21:19:51,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73599 states, 67886 states have (on average 1.5409362755207259) internal successors, (104608), 67886 states have internal predecessors, (104608), 5208 states have call successors, (5208), 504 states have call predecessors, (5208), 504 states have return successors, (5208), 5208 states have call predecessors, (5208), 5208 states have call successors, (5208) [2023-12-15 21:19:51,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73599 states to 73599 states and 115024 transitions. [2023-12-15 21:19:51,692 INFO L78 Accepts]: Start accepts. Automaton has 73599 states and 115024 transitions. Word has length 459 [2023-12-15 21:19:51,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:19:51,693 INFO L495 AbstractCegarLoop]: Abstraction has 73599 states and 115024 transitions. [2023-12-15 21:19:51,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-15 21:19:51,693 INFO L276 IsEmpty]: Start isEmpty. Operand 73599 states and 115024 transitions. [2023-12-15 21:19:51,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2023-12-15 21:19:51,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:19:51,707 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:51,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-15 21:19:51,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:19:51,914 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:19:51,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:19:51,914 INFO L85 PathProgramCache]: Analyzing trace with hash -911964961, now seen corresponding path program 1 times [2023-12-15 21:19:51,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:19:51,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737852784] [2023-12-15 21:19:51,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:51,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:19:51,950 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:19:51,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431718859] [2023-12-15 21:19:51,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:19:51,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:19:51,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:19:51,951 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:19:51,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-15 21:19:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:19:52,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 1225 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 21:19:52,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:19:53,159 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-15 21:19:53,160 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:19:53,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:19:53,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737852784] [2023-12-15 21:19:53,160 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:19:53,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431718859] [2023-12-15 21:19:53,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431718859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:19:53,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:19:53,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:19:53,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340585718] [2023-12-15 21:19:53,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:19:53,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:19:53,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:19:53,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:19:53,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:19:53,162 INFO L87 Difference]: Start difference. First operand 73599 states and 115024 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Received shutdown request... [2023-12-15 21:19:53,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:19:53,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 457 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 21:19:53,674 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 368 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:19:53,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 883 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:19:53,675 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:19:53,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-15 21:19:53,689 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:19:53,689 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 21:19:53,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:19:53,877 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (73599states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (23782 states constructed, input type IntersectNwa). [2023-12-15 21:19:53,880 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:19:53,882 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:19:53,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:19:53 BoogieIcfgContainer [2023-12-15 21:19:53,883 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:19:53,883 INFO L158 Benchmark]: Toolchain (without parser) took 57361.19ms. Allocated memory was 194.0MB in the beginning and 3.6GB in the end (delta: 3.4GB). Free memory was 141.8MB in the beginning and 2.3GB in the end (delta: -2.1GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-12-15 21:19:53,884 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 194.0MB. Free memory is still 140.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:19:53,884 INFO L158 Benchmark]: CACSL2BoogieTranslator took 490.41ms. Allocated memory is still 194.0MB. Free memory was 141.5MB in the beginning and 104.0MB in the end (delta: 37.4MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2023-12-15 21:19:53,884 INFO L158 Benchmark]: Boogie Procedure Inliner took 137.25ms. Allocated memory was 194.0MB in the beginning and 232.8MB in the end (delta: 38.8MB). Free memory was 104.0MB in the beginning and 181.4MB in the end (delta: -77.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-15 21:19:53,884 INFO L158 Benchmark]: Boogie Preprocessor took 163.07ms. Allocated memory is still 232.8MB. Free memory was 181.4MB in the beginning and 141.1MB in the end (delta: 40.4MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2023-12-15 21:19:53,884 INFO L158 Benchmark]: RCFGBuilder took 1085.22ms. Allocated memory is still 232.8MB. Free memory was 141.1MB in the beginning and 118.8MB in the end (delta: 22.2MB). Peak memory consumption was 62.6MB. Max. memory is 8.0GB. [2023-12-15 21:19:53,885 INFO L158 Benchmark]: TraceAbstraction took 55480.32ms. Allocated memory was 232.8MB in the beginning and 3.6GB in the end (delta: 3.4GB). Free memory was 118.3MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-15 21:19:53,885 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 194.0MB. Free memory is still 140.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 490.41ms. Allocated memory is still 194.0MB. Free memory was 141.5MB in the beginning and 104.0MB in the end (delta: 37.4MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 137.25ms. Allocated memory was 194.0MB in the beginning and 232.8MB in the end (delta: 38.8MB). Free memory was 104.0MB in the beginning and 181.4MB in the end (delta: -77.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 163.07ms. Allocated memory is still 232.8MB. Free memory was 181.4MB in the beginning and 141.1MB in the end (delta: 40.4MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. * RCFGBuilder took 1085.22ms. Allocated memory is still 232.8MB. Free memory was 141.1MB in the beginning and 118.8MB in the end (delta: 22.2MB). Peak memory consumption was 62.6MB. Max. memory is 8.0GB. * TraceAbstraction took 55480.32ms. Allocated memory was 232.8MB in the beginning and 3.6GB in the end (delta: 3.4GB). Free memory was 118.3MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (73599states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (23782 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 293 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 55.4s, OverallIterations: 21, TraceHistogramMax: 62, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 17.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15991 SdHoareTripleChecker+Valid, 5.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15871 mSDsluCounter, 35126 SdHoareTripleChecker+Invalid, 4.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22869 mSDsCounter, 891 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5784 IncrementalHoareTripleChecker+Invalid, 6675 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 891 mSolverCounterUnsat, 12257 mSDtfsCounter, 5784 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11905 GetRequests, 11777 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73599occurred in iteration=20, InterpolantAutomatonStates: 128, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 15.5s AutomataMinimizationTime, 20 MinimizatonAttempts, 87268 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.4s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 8.9s InterpolantComputationTime, 10043 NumberOfCodeBlocks, 10043 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 11850 ConstructedInterpolants, 1 QuantifiedInterpolants, 36713 SizeOfPredicates, 46 NumberOfNonLiveVariables, 25517 ConjunctsInSsa, 142 ConjunctsInUnsatCore, 26 InterpolantComputations, 17 PerfectInterpolantSequences, 195830/196664 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