/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-70.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 01:01:19,137 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 01:01:19,180 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 01:01:19,183 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 01:01:19,184 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 01:01:19,198 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 01:01:19,198 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 01:01:19,199 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 01:01:19,199 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 01:01:19,199 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 01:01:19,200 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 01:01:19,200 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 01:01:19,200 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 01:01:19,200 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 01:01:19,201 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 01:01:19,201 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 01:01:19,201 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 01:01:19,201 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 01:01:19,202 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 01:01:19,202 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 01:01:19,202 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 01:01:19,209 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 01:01:19,209 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 01:01:19,209 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 01:01:19,209 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 01:01:19,210 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 01:01:19,210 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 01:01:19,210 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 01:01:19,210 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 01:01:19,211 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 01:01:19,211 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 01:01:19,211 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 01:01:19,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 01:01:19,216 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 01:01:19,216 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 01:01:19,216 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 01:01:19,216 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 01:01:19,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 01:01:19,217 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 01:01:19,217 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 01:01:19,217 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 01:01:19,217 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 01:01:19,217 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 01:01:19,217 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 01:01:19,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 01:01:19,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 01:01:19,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 01:01:19,425 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 01:01:19,425 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 01:01:19,426 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-70.i [2023-12-21 01:01:20,439 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 01:01:20,667 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 01:01:20,667 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-70.i [2023-12-21 01:01:20,686 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d2018328/706e53c02f904915ba97a36ee7cc7736/FLAG0261b3d46 [2023-12-21 01:01:20,695 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d2018328/706e53c02f904915ba97a36ee7cc7736 [2023-12-21 01:01:20,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 01:01:20,697 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 01:01:20,698 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 01:01:20,698 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 01:01:20,708 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 01:01:20,709 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:01:20" (1/1) ... [2023-12-21 01:01:20,709 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@372978e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:20, skipping insertion in model container [2023-12-21 01:01:20,709 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:01:20" (1/1) ... [2023-12-21 01:01:20,755 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 01:01:20,869 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-70.i[916,929] [2023-12-21 01:01:21,064 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 01:01:21,079 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 01:01:21,086 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-70.i[916,929] [2023-12-21 01:01:21,187 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 01:01:21,216 INFO L206 MainTranslator]: Completed translation [2023-12-21 01:01:21,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:21 WrapperNode [2023-12-21 01:01:21,216 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 01:01:21,217 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 01:01:21,217 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 01:01:21,217 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 01:01:21,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:21" (1/1) ... [2023-12-21 01:01:21,239 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:21" (1/1) ... [2023-12-21 01:01:21,333 INFO L138 Inliner]: procedures = 26, calls = 73, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 599 [2023-12-21 01:01:21,334 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 01:01:21,335 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 01:01:21,335 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 01:01:21,335 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 01:01:21,344 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:21" (1/1) ... [2023-12-21 01:01:21,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:21" (1/1) ... [2023-12-21 01:01:21,375 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:21" (1/1) ... [2023-12-21 01:01:21,507 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]. [2023-12-21 01:01:21,507 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:21" (1/1) ... [2023-12-21 01:01:21,508 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:21" (1/1) ... [2023-12-21 01:01:21,534 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:21" (1/1) ... [2023-12-21 01:01:21,538 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:21" (1/1) ... [2023-12-21 01:01:21,555 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:21" (1/1) ... [2023-12-21 01:01:21,567 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:21" (1/1) ... [2023-12-21 01:01:21,595 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 01:01:21,596 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 01:01:21,596 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 01:01:21,596 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 01:01:21,597 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:21" (1/1) ... [2023-12-21 01:01:21,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 01:01:21,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:01:21,623 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) [2023-12-21 01:01:21,628 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 [2023-12-21 01:01:21,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 01:01:21,652 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 01:01:21,652 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 01:01:21,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 01:01:21,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 01:01:21,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 01:01:21,781 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 01:01:21,783 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 01:01:22,696 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 01:01:22,775 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 01:01:22,775 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 01:01:22,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:01:22 BoogieIcfgContainer [2023-12-21 01:01:22,775 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 01:01:22,777 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 01:01:22,777 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 01:01:22,780 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 01:01:22,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:01:20" (1/3) ... [2023-12-21 01:01:22,781 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d3bf2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:01:22, skipping insertion in model container [2023-12-21 01:01:22,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:21" (2/3) ... [2023-12-21 01:01:22,782 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d3bf2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:01:22, skipping insertion in model container [2023-12-21 01:01:22,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:01:22" (3/3) ... [2023-12-21 01:01:22,784 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-70.i [2023-12-21 01:01:22,797 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 01:01:22,798 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 01:01:22,848 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 01:01:22,854 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;@74c33e2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 01:01:22,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 01:01:22,860 INFO L276 IsEmpty]: Start isEmpty. Operand has 224 states, 161 states have (on average 1.565217391304348) internal successors, (252), 162 states have internal predecessors, (252), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-21 01:01:22,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-21 01:01:22,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:01:22,893 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:01:22,893 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:01:22,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:01:22,899 INFO L85 PathProgramCache]: Analyzing trace with hash -494839156, now seen corresponding path program 1 times [2023-12-21 01:01:22,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:01:22,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500317444] [2023-12-21 01:01:22,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:22,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:01:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:01:23,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:01:23,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500317444] [2023-12-21 01:01:23,217 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-21 01:01:23,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526493578] [2023-12-21 01:01:23,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:23,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:23,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:01:23,220 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) [2023-12-21 01:01:23,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 01:01:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:01:23,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 01:01:23,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:01:23,631 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 6962 trivial. 0 not checked. [2023-12-21 01:01:23,631 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:01:23,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526493578] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:01:23,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:01:23,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 01:01:23,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253922438] [2023-12-21 01:01:23,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:01:23,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 01:01:23,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:01:23,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 01:01:23,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 01:01:23,662 INFO L87 Difference]: Start difference. First operand has 224 states, 161 states have (on average 1.565217391304348) internal successors, (252), 162 states have internal predecessors, (252), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) Second operand has 2 states, 2 states have (on average 64.0) internal successors, (128), 2 states have internal predecessors, (128), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 2 states have call successors, (60) [2023-12-21 01:01:23,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:01:23,767 INFO L93 Difference]: Finished difference Result 443 states and 798 transitions. [2023-12-21 01:01:23,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 01:01:23,772 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 64.0) internal successors, (128), 2 states have internal predecessors, (128), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 2 states have call successors, (60) Word has length 423 [2023-12-21 01:01:23,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:01:23,784 INFO L225 Difference]: With dead ends: 443 [2023-12-21 01:01:23,784 INFO L226 Difference]: Without dead ends: 220 [2023-12-21 01:01:23,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 01:01:23,794 INFO L413 NwaCegarLoop]: 359 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, 359 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 [2023-12-21 01:01:23,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 359 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:01:23,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-12-21 01:01:23,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2023-12-21 01:01:23,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 158 states have (on average 1.5316455696202531) internal successors, (242), 158 states have internal predecessors, (242), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-21 01:01:23,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 362 transitions. [2023-12-21 01:01:23,862 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 362 transitions. Word has length 423 [2023-12-21 01:01:23,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:01:23,863 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 362 transitions. [2023-12-21 01:01:23,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 64.0) internal successors, (128), 2 states have internal predecessors, (128), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 2 states have call successors, (60) [2023-12-21 01:01:23,863 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 362 transitions. [2023-12-21 01:01:23,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-21 01:01:23,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:01:23,870 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:01:23,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 01:01:24,077 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 [2023-12-21 01:01:24,078 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:01:24,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:01:24,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1712191612, now seen corresponding path program 1 times [2023-12-21 01:01:24,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:01:24,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333353670] [2023-12-21 01:01:24,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:24,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:01:24,176 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:01:24,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85794485] [2023-12-21 01:01:24,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:24,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:24,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:01:24,185 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) [2023-12-21 01:01:24,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 01:01:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:01:24,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 01:01:24,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:01:24,569 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:01:24,570 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:01:24,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:01:24,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333353670] [2023-12-21 01:01:24,570 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:01:24,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85794485] [2023-12-21 01:01:24,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85794485] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:01:24,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:01:24,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 01:01:24,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163365260] [2023-12-21 01:01:24,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:01:24,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 01:01:24,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:01:24,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 01:01:24,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 01:01:24,576 INFO L87 Difference]: Start difference. First operand 220 states and 362 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:24,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:01:24,858 INFO L93 Difference]: Finished difference Result 753 states and 1245 transitions. [2023-12-21 01:01:24,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 01:01:24,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 423 [2023-12-21 01:01:24,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:01:24,865 INFO L225 Difference]: With dead ends: 753 [2023-12-21 01:01:24,865 INFO L226 Difference]: Without dead ends: 534 [2023-12-21 01:01:24,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 01:01:24,867 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 501 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:01:24,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 1151 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:01:24,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2023-12-21 01:01:24,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 425. [2023-12-21 01:01:24,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 327 states have (on average 1.5902140672782874) internal successors, (520), 328 states have internal predecessors, (520), 95 states have call successors, (95), 2 states have call predecessors, (95), 2 states have return successors, (95), 94 states have call predecessors, (95), 95 states have call successors, (95) [2023-12-21 01:01:24,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 710 transitions. [2023-12-21 01:01:24,920 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 710 transitions. Word has length 423 [2023-12-21 01:01:24,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:01:24,922 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 710 transitions. [2023-12-21 01:01:24,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:24,923 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 710 transitions. [2023-12-21 01:01:24,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-21 01:01:24,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:01:24,929 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:01:24,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 01:01:25,139 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 [2023-12-21 01:01:25,140 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:01:25,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:01:25,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1510367678, now seen corresponding path program 1 times [2023-12-21 01:01:25,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:01:25,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951617192] [2023-12-21 01:01:25,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:25,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:01:25,241 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:01:25,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [441872372] [2023-12-21 01:01:25,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:25,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:25,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:01:25,243 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) [2023-12-21 01:01:25,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 01:01:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:01:25,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 01:01:25,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:01:25,749 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:01:25,749 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:01:25,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:01:25,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951617192] [2023-12-21 01:01:25,750 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:01:25,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441872372] [2023-12-21 01:01:25,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441872372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:01:25,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:01:25,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 01:01:25,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802618109] [2023-12-21 01:01:25,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:01:25,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 01:01:25,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:01:25,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 01:01:25,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 01:01:25,753 INFO L87 Difference]: Start difference. First operand 425 states and 710 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:25,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:01:25,931 INFO L93 Difference]: Finished difference Result 1335 states and 2245 transitions. [2023-12-21 01:01:25,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 01:01:25,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 423 [2023-12-21 01:01:25,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:01:25,938 INFO L225 Difference]: With dead ends: 1335 [2023-12-21 01:01:25,938 INFO L226 Difference]: Without dead ends: 911 [2023-12-21 01:01:25,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 01:01:25,940 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 362 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:01:25,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 896 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:01:25,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2023-12-21 01:01:25,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 839. [2023-12-21 01:01:25,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 717 states have (on average 1.6471408647140864) internal successors, (1181), 720 states have internal predecessors, (1181), 117 states have call successors, (117), 4 states have call predecessors, (117), 4 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2023-12-21 01:01:25,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1415 transitions. [2023-12-21 01:01:25,981 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1415 transitions. Word has length 423 [2023-12-21 01:01:25,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:01:25,985 INFO L495 AbstractCegarLoop]: Abstraction has 839 states and 1415 transitions. [2023-12-21 01:01:25,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:25,985 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1415 transitions. [2023-12-21 01:01:25,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-21 01:01:25,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:01:25,991 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:01:26,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 01:01:26,204 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 [2023-12-21 01:01:26,205 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:01:26,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:01:26,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1365128222, now seen corresponding path program 1 times [2023-12-21 01:01:26,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:01:26,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213082654] [2023-12-21 01:01:26,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:26,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:01:26,279 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:01:26,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1833707971] [2023-12-21 01:01:26,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:26,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:26,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:01:26,291 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) [2023-12-21 01:01:26,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 01:01:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:01:26,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 01:01:26,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:01:26,687 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:01:26,687 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:01:26,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:01:26,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213082654] [2023-12-21 01:01:26,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:01:26,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833707971] [2023-12-21 01:01:26,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833707971] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:01:26,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:01:26,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:01:26,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129321337] [2023-12-21 01:01:26,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:01:26,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:01:26,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:01:26,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:01:26,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:01:26,691 INFO L87 Difference]: Start difference. First operand 839 states and 1415 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:27,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:01:27,351 INFO L93 Difference]: Finished difference Result 4369 states and 7300 transitions. [2023-12-21 01:01:27,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:01:27,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 423 [2023-12-21 01:01:27,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:01:27,364 INFO L225 Difference]: With dead ends: 4369 [2023-12-21 01:01:27,364 INFO L226 Difference]: Without dead ends: 3531 [2023-12-21 01:01:27,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:01:27,368 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 1632 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1632 SdHoareTripleChecker+Valid, 1969 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 01:01:27,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1632 Valid, 1969 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 01:01:27,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3531 states. [2023-12-21 01:01:27,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3531 to 1575. [2023-12-21 01:01:27,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 1413 states have (on average 1.6553432413305025) internal successors, (2339), 1420 states have internal predecessors, (2339), 153 states have call successors, (153), 8 states have call predecessors, (153), 8 states have return successors, (153), 146 states have call predecessors, (153), 153 states have call successors, (153) [2023-12-21 01:01:27,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 2645 transitions. [2023-12-21 01:01:27,444 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 2645 transitions. Word has length 423 [2023-12-21 01:01:27,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:01:27,445 INFO L495 AbstractCegarLoop]: Abstraction has 1575 states and 2645 transitions. [2023-12-21 01:01:27,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:27,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 2645 transitions. [2023-12-21 01:01:27,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-21 01:01:27,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:01:27,450 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:01:27,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 01:01:27,656 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 [2023-12-21 01:01:27,657 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:01:27,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:01:27,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1437514780, now seen corresponding path program 1 times [2023-12-21 01:01:27,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:01:27,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283403105] [2023-12-21 01:01:27,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:27,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:01:27,709 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:01:27,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [931242821] [2023-12-21 01:01:27,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:27,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:27,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:01:27,711 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) [2023-12-21 01:01:27,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 01:01:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:01:28,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 01:01:28,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:01:28,078 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:01:28,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:01:28,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:01:28,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283403105] [2023-12-21 01:01:28,079 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:01:28,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931242821] [2023-12-21 01:01:28,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931242821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:01:28,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:01:28,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 01:01:28,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607882522] [2023-12-21 01:01:28,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:01:28,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 01:01:28,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:01:28,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 01:01:28,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:01:28,087 INFO L87 Difference]: Start difference. First operand 1575 states and 2645 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:28,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:01:28,227 INFO L93 Difference]: Finished difference Result 4675 states and 7847 transitions. [2023-12-21 01:01:28,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 01:01:28,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 423 [2023-12-21 01:01:28,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:01:28,240 INFO L225 Difference]: With dead ends: 4675 [2023-12-21 01:01:28,241 INFO L226 Difference]: Without dead ends: 3101 [2023-12-21 01:01:28,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:01:28,245 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 333 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:01:28,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 806 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:01:28,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3101 states. [2023-12-21 01:01:28,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3101 to 1779. [2023-12-21 01:01:28,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1617 states have (on average 1.6518243661100804) internal successors, (2671), 1624 states have internal predecessors, (2671), 153 states have call successors, (153), 8 states have call predecessors, (153), 8 states have return successors, (153), 146 states have call predecessors, (153), 153 states have call successors, (153) [2023-12-21 01:01:28,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2977 transitions. [2023-12-21 01:01:28,328 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2977 transitions. Word has length 423 [2023-12-21 01:01:28,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:01:28,329 INFO L495 AbstractCegarLoop]: Abstraction has 1779 states and 2977 transitions. [2023-12-21 01:01:28,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:28,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2977 transitions. [2023-12-21 01:01:28,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-21 01:01:28,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:01:28,335 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:01:28,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 01:01:28,546 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 [2023-12-21 01:01:28,547 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:01:28,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:01:28,547 INFO L85 PathProgramCache]: Analyzing trace with hash 575229086, now seen corresponding path program 1 times [2023-12-21 01:01:28,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:01:28,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475941767] [2023-12-21 01:01:28,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:28,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:01:28,604 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:01:28,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [625812645] [2023-12-21 01:01:28,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:28,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:28,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:01:28,608 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) [2023-12-21 01:01:28,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 01:01:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:01:28,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 01:01:28,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:01:28,949 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:01:28,950 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:01:28,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:01:28,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475941767] [2023-12-21 01:01:28,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:01:28,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625812645] [2023-12-21 01:01:28,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625812645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:01:28,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:01:28,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 01:01:28,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120716147] [2023-12-21 01:01:28,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:01:28,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 01:01:28,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:01:28,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 01:01:28,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:01:28,952 INFO L87 Difference]: Start difference. First operand 1779 states and 2977 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:29,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:01:29,114 INFO L93 Difference]: Finished difference Result 5259 states and 8777 transitions. [2023-12-21 01:01:29,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 01:01:29,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 423 [2023-12-21 01:01:29,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:01:29,130 INFO L225 Difference]: With dead ends: 5259 [2023-12-21 01:01:29,130 INFO L226 Difference]: Without dead ends: 3481 [2023-12-21 01:01:29,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:01:29,133 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 306 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:01:29,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 678 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:01:29,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3481 states. [2023-12-21 01:01:29,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3481 to 2907. [2023-12-21 01:01:29,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 2745 states have (on average 1.6185792349726775) internal successors, (4443), 2752 states have internal predecessors, (4443), 153 states have call successors, (153), 8 states have call predecessors, (153), 8 states have return successors, (153), 146 states have call predecessors, (153), 153 states have call successors, (153) [2023-12-21 01:01:29,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 4749 transitions. [2023-12-21 01:01:29,214 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 4749 transitions. Word has length 423 [2023-12-21 01:01:29,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:01:29,214 INFO L495 AbstractCegarLoop]: Abstraction has 2907 states and 4749 transitions. [2023-12-21 01:01:29,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:29,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 4749 transitions. [2023-12-21 01:01:29,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-21 01:01:29,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:01:29,220 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:01:29,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 01:01:29,427 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 [2023-12-21 01:01:29,428 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:01:29,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:01:29,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1573424136, now seen corresponding path program 1 times [2023-12-21 01:01:29,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:01:29,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103231042] [2023-12-21 01:01:29,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:29,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:01:29,472 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:01:29,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [254900793] [2023-12-21 01:01:29,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:29,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:29,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:01:29,477 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) [2023-12-21 01:01:29,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 01:01:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:01:29,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 01:01:29,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:01:29,839 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:01:29,839 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:01:29,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:01:29,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103231042] [2023-12-21 01:01:29,840 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:01:29,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254900793] [2023-12-21 01:01:29,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254900793] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:01:29,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:01:29,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 01:01:29,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409941734] [2023-12-21 01:01:29,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:01:29,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 01:01:29,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:01:29,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 01:01:29,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 01:01:29,842 INFO L87 Difference]: Start difference. First operand 2907 states and 4749 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:30,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:01:30,092 INFO L93 Difference]: Finished difference Result 7777 states and 12664 transitions. [2023-12-21 01:01:30,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 01:01:30,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 424 [2023-12-21 01:01:30,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:01:30,116 INFO L225 Difference]: With dead ends: 7777 [2023-12-21 01:01:30,118 INFO L226 Difference]: Without dead ends: 4871 [2023-12-21 01:01:30,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:01:30,127 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 809 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:01:30,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 1785 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:01:30,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4871 states. [2023-12-21 01:01:30,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 2829. [2023-12-21 01:01:30,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2829 states, 2667 states have (on average 1.6130483689538808) internal successors, (4302), 2674 states have internal predecessors, (4302), 153 states have call successors, (153), 8 states have call predecessors, (153), 8 states have return successors, (153), 146 states have call predecessors, (153), 153 states have call successors, (153) [2023-12-21 01:01:30,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2829 states to 2829 states and 4608 transitions. [2023-12-21 01:01:30,292 INFO L78 Accepts]: Start accepts. Automaton has 2829 states and 4608 transitions. Word has length 424 [2023-12-21 01:01:30,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:01:30,292 INFO L495 AbstractCegarLoop]: Abstraction has 2829 states and 4608 transitions. [2023-12-21 01:01:30,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:30,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2829 states and 4608 transitions. [2023-12-21 01:01:30,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-21 01:01:30,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:01:30,302 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:01:30,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 01:01:30,512 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 [2023-12-21 01:01:30,513 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:01:30,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:01:30,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1995073210, now seen corresponding path program 1 times [2023-12-21 01:01:30,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:01:30,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311442659] [2023-12-21 01:01:30,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:30,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:01:30,570 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:01:30,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2056258637] [2023-12-21 01:01:30,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:30,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:30,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:01:30,580 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) [2023-12-21 01:01:30,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 01:01:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:01:30,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 01:01:30,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:01:30,943 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:01:30,944 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:01:30,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:01:30,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311442659] [2023-12-21 01:01:30,944 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:01:30,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056258637] [2023-12-21 01:01:30,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056258637] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:01:30,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:01:30,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:01:30,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483800783] [2023-12-21 01:01:30,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:01:30,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:01:30,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:01:30,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:01:30,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:01:30,946 INFO L87 Difference]: Start difference. First operand 2829 states and 4608 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:31,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:01:31,629 INFO L93 Difference]: Finished difference Result 6138 states and 9978 transitions. [2023-12-21 01:01:31,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:01:31,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 424 [2023-12-21 01:01:31,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:01:31,640 INFO L225 Difference]: With dead ends: 6138 [2023-12-21 01:01:31,640 INFO L226 Difference]: Without dead ends: 3310 [2023-12-21 01:01:31,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:01:31,645 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 986 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 01:01:31,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 1367 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 01:01:31,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3310 states. [2023-12-21 01:01:31,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3310 to 2208. [2023-12-21 01:01:31,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2208 states, 2076 states have (on average 1.583815028901734) internal successors, (3288), 2080 states have internal predecessors, (3288), 124 states have call successors, (124), 7 states have call predecessors, (124), 7 states have return successors, (124), 120 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-21 01:01:31,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2208 states to 2208 states and 3536 transitions. [2023-12-21 01:01:31,735 INFO L78 Accepts]: Start accepts. Automaton has 2208 states and 3536 transitions. Word has length 424 [2023-12-21 01:01:31,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:01:31,735 INFO L495 AbstractCegarLoop]: Abstraction has 2208 states and 3536 transitions. [2023-12-21 01:01:31,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:31,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 3536 transitions. [2023-12-21 01:01:31,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-21 01:01:31,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:01:31,741 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:01:31,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 01:01:31,951 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 [2023-12-21 01:01:31,951 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:01:31,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:01:31,952 INFO L85 PathProgramCache]: Analyzing trace with hash 720630948, now seen corresponding path program 1 times [2023-12-21 01:01:31,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:01:31,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066384558] [2023-12-21 01:01:31,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:31,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:01:31,985 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:01:31,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472267438] [2023-12-21 01:01:31,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:31,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:31,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:01:31,987 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) [2023-12-21 01:01:32,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 01:01:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:01:32,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 01:01:32,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:01:32,349 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:01:32,350 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:01:32,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:01:32,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066384558] [2023-12-21 01:01:32,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:01:32,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472267438] [2023-12-21 01:01:32,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472267438] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:01:32,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:01:32,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:01:32,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355032278] [2023-12-21 01:01:32,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:01:32,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:01:32,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:01:32,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:01:32,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:01:32,352 INFO L87 Difference]: Start difference. First operand 2208 states and 3536 transitions. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:32,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:01:32,944 INFO L93 Difference]: Finished difference Result 6009 states and 9601 transitions. [2023-12-21 01:01:32,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 01:01:32,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 424 [2023-12-21 01:01:32,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:01:32,956 INFO L225 Difference]: With dead ends: 6009 [2023-12-21 01:01:32,956 INFO L226 Difference]: Without dead ends: 3866 [2023-12-21 01:01:32,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 01:01:32,961 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 1155 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 2004 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 01:01:32,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 2004 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 01:01:32,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3866 states. [2023-12-21 01:01:33,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3866 to 2200. [2023-12-21 01:01:33,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 2068 states have (on average 1.5822050290135397) internal successors, (3272), 2072 states have internal predecessors, (3272), 124 states have call successors, (124), 7 states have call predecessors, (124), 7 states have return successors, (124), 120 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-21 01:01:33,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 3520 transitions. [2023-12-21 01:01:33,025 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 3520 transitions. Word has length 424 [2023-12-21 01:01:33,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:01:33,026 INFO L495 AbstractCegarLoop]: Abstraction has 2200 states and 3520 transitions. [2023-12-21 01:01:33,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:33,026 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 3520 transitions. [2023-12-21 01:01:33,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-21 01:01:33,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:01:33,030 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:01:33,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 01:01:33,238 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 [2023-12-21 01:01:33,238 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:01:33,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:01:33,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1402501342, now seen corresponding path program 1 times [2023-12-21 01:01:33,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:01:33,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878802558] [2023-12-21 01:01:33,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:33,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:01:33,290 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:01:33,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1597323722] [2023-12-21 01:01:33,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:33,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:33,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:01:33,292 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) [2023-12-21 01:01:33,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 01:01:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:01:33,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 01:01:33,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:01:33,628 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:01:33,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:01:33,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:01:33,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878802558] [2023-12-21 01:01:33,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:01:33,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597323722] [2023-12-21 01:01:33,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597323722] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:01:33,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:01:33,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:01:33,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756745108] [2023-12-21 01:01:33,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:01:33,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:01:33,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:01:33,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:01:33,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:01:33,630 INFO L87 Difference]: Start difference. First operand 2200 states and 3520 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:34,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:01:34,292 INFO L93 Difference]: Finished difference Result 5250 states and 8380 transitions. [2023-12-21 01:01:34,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:01:34,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 424 [2023-12-21 01:01:34,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:01:34,303 INFO L225 Difference]: With dead ends: 5250 [2023-12-21 01:01:34,303 INFO L226 Difference]: Without dead ends: 3111 [2023-12-21 01:01:34,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:01:34,307 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 1037 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 01:01:34,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 953 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 01:01:34,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3111 states. [2023-12-21 01:01:34,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3111 to 2200. [2023-12-21 01:01:34,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 2068 states have (on average 1.5783365570599612) internal successors, (3264), 2072 states have internal predecessors, (3264), 124 states have call successors, (124), 7 states have call predecessors, (124), 7 states have return successors, (124), 120 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-21 01:01:34,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 3512 transitions. [2023-12-21 01:01:34,364 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 3512 transitions. Word has length 424 [2023-12-21 01:01:34,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:01:34,364 INFO L495 AbstractCegarLoop]: Abstraction has 2200 states and 3512 transitions. [2023-12-21 01:01:34,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:34,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 3512 transitions. [2023-12-21 01:01:34,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-21 01:01:34,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:01:34,369 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:01:34,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 01:01:34,573 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 [2023-12-21 01:01:34,573 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:01:34,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:01:34,574 INFO L85 PathProgramCache]: Analyzing trace with hash -2016446948, now seen corresponding path program 1 times [2023-12-21 01:01:34,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:01:34,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785096623] [2023-12-21 01:01:34,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:34,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:01:34,608 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:01:34,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [730049220] [2023-12-21 01:01:34,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:34,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:34,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:01:34,610 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) [2023-12-21 01:01:34,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 01:01:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:01:34,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 01:01:34,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:01:35,360 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:01:35,360 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:01:35,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:01:35,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785096623] [2023-12-21 01:01:35,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:01:35,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730049220] [2023-12-21 01:01:35,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730049220] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:01:35,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:01:35,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 01:01:35,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119420415] [2023-12-21 01:01:35,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:01:35,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 01:01:35,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:01:35,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 01:01:35,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:01:35,362 INFO L87 Difference]: Start difference. First operand 2200 states and 3512 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:36,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:01:36,449 INFO L93 Difference]: Finished difference Result 13047 states and 20871 transitions. [2023-12-21 01:01:36,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-21 01:01:36,451 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 424 [2023-12-21 01:01:36,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:01:36,467 INFO L225 Difference]: With dead ends: 13047 [2023-12-21 01:01:36,468 INFO L226 Difference]: Without dead ends: 10912 [2023-12-21 01:01:36,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2023-12-21 01:01:36,471 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 2083 mSDsluCounter, 2975 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2083 SdHoareTripleChecker+Valid, 3518 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 01:01:36,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2083 Valid, 3518 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 01:01:36,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10912 states. [2023-12-21 01:01:36,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10912 to 3165. [2023-12-21 01:01:36,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3165 states, 3007 states have (on average 1.5736614566012637) internal successors, (4732), 3010 states have internal predecessors, (4732), 149 states have call successors, (149), 8 states have call predecessors, (149), 8 states have return successors, (149), 146 states have call predecessors, (149), 149 states have call successors, (149) [2023-12-21 01:01:36,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3165 states to 3165 states and 5030 transitions. [2023-12-21 01:01:36,603 INFO L78 Accepts]: Start accepts. Automaton has 3165 states and 5030 transitions. Word has length 424 [2023-12-21 01:01:36,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:01:36,604 INFO L495 AbstractCegarLoop]: Abstraction has 3165 states and 5030 transitions. [2023-12-21 01:01:36,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:36,604 INFO L276 IsEmpty]: Start isEmpty. Operand 3165 states and 5030 transitions. [2023-12-21 01:01:36,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-21 01:01:36,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:01:36,610 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:01:36,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 01:01:36,819 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 [2023-12-21 01:01:36,819 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:01:36,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:01:36,820 INFO L85 PathProgramCache]: Analyzing trace with hash -616469152, now seen corresponding path program 1 times [2023-12-21 01:01:36,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:01:36,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220140881] [2023-12-21 01:01:36,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:36,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:01:36,853 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:01:36,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1746213698] [2023-12-21 01:01:36,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:36,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:36,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:01:36,854 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) [2023-12-21 01:01:36,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 01:01:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:01:37,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 01:01:37,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:01:37,207 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:01:37,207 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:01:37,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:01:37,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220140881] [2023-12-21 01:01:37,208 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:01:37,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746213698] [2023-12-21 01:01:37,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746213698] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:01:37,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:01:37,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 01:01:37,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790701035] [2023-12-21 01:01:37,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:01:37,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 01:01:37,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:01:37,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 01:01:37,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:01:37,218 INFO L87 Difference]: Start difference. First operand 3165 states and 5030 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:37,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:01:37,361 INFO L93 Difference]: Finished difference Result 7511 states and 11909 transitions. [2023-12-21 01:01:37,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 01:01:37,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 424 [2023-12-21 01:01:37,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:01:37,372 INFO L225 Difference]: With dead ends: 7511 [2023-12-21 01:01:37,372 INFO L226 Difference]: Without dead ends: 4468 [2023-12-21 01:01:37,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:01:37,379 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 339 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:01:37,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 756 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:01:37,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4468 states. [2023-12-21 01:01:37,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4468 to 3175. [2023-12-21 01:01:37,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3175 states, 3017 states have (on average 1.5551872721246272) internal successors, (4692), 3020 states have internal predecessors, (4692), 149 states have call successors, (149), 8 states have call predecessors, (149), 8 states have return successors, (149), 146 states have call predecessors, (149), 149 states have call successors, (149) [2023-12-21 01:01:37,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3175 states to 3175 states and 4990 transitions. [2023-12-21 01:01:37,513 INFO L78 Accepts]: Start accepts. Automaton has 3175 states and 4990 transitions. Word has length 424 [2023-12-21 01:01:37,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:01:37,514 INFO L495 AbstractCegarLoop]: Abstraction has 3175 states and 4990 transitions. [2023-12-21 01:01:37,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:37,514 INFO L276 IsEmpty]: Start isEmpty. Operand 3175 states and 4990 transitions. [2023-12-21 01:01:37,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-21 01:01:37,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:01:37,519 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:01:37,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 01:01:37,728 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 [2023-12-21 01:01:37,728 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:01:37,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:01:37,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1434514846, now seen corresponding path program 1 times [2023-12-21 01:01:37,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:01:37,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196252657] [2023-12-21 01:01:37,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:37,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:01:37,761 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:01:37,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1710678167] [2023-12-21 01:01:37,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:37,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:37,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:01:37,762 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) [2023-12-21 01:01:37,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 01:01:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:01:38,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 01:01:38,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:01:38,622 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:01:38,622 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:01:38,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:01:38,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196252657] [2023-12-21 01:01:38,622 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:01:38,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710678167] [2023-12-21 01:01:38,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710678167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:01:38,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:01:38,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 01:01:38,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043630011] [2023-12-21 01:01:38,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:01:38,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 01:01:38,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:01:38,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 01:01:38,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:01:38,624 INFO L87 Difference]: Start difference. First operand 3175 states and 4990 transitions. Second operand has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:39,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:01:39,547 INFO L93 Difference]: Finished difference Result 13079 states and 20527 transitions. [2023-12-21 01:01:39,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-21 01:01:39,549 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 424 [2023-12-21 01:01:39,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:01:39,563 INFO L225 Difference]: With dead ends: 13079 [2023-12-21 01:01:39,564 INFO L226 Difference]: Without dead ends: 9758 [2023-12-21 01:01:39,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2023-12-21 01:01:39,569 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 2346 mSDsluCounter, 2803 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2346 SdHoareTripleChecker+Valid, 3286 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 01:01:39,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2346 Valid, 3286 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 01:01:39,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9758 states. [2023-12-21 01:01:39,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9758 to 3455. [2023-12-21 01:01:39,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3455 states, 3297 states have (on average 1.5529269032453745) internal successors, (5120), 3300 states have internal predecessors, (5120), 149 states have call successors, (149), 8 states have call predecessors, (149), 8 states have return successors, (149), 146 states have call predecessors, (149), 149 states have call successors, (149) [2023-12-21 01:01:39,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3455 states to 3455 states and 5418 transitions. [2023-12-21 01:01:39,663 INFO L78 Accepts]: Start accepts. Automaton has 3455 states and 5418 transitions. Word has length 424 [2023-12-21 01:01:39,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:01:39,663 INFO L495 AbstractCegarLoop]: Abstraction has 3455 states and 5418 transitions. [2023-12-21 01:01:39,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:39,664 INFO L276 IsEmpty]: Start isEmpty. Operand 3455 states and 5418 transitions. [2023-12-21 01:01:39,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-21 01:01:39,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:01:39,670 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:01:39,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-21 01:01:39,881 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 [2023-12-21 01:01:39,881 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:01:39,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:01:39,882 INFO L85 PathProgramCache]: Analyzing trace with hash 953434588, now seen corresponding path program 1 times [2023-12-21 01:01:39,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:01:39,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542989017] [2023-12-21 01:01:39,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:39,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:01:39,921 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:01:39,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [740021134] [2023-12-21 01:01:39,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:39,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:39,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:01:39,923 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) [2023-12-21 01:01:39,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 01:01:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:01:40,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 01:01:40,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:01:40,607 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 2477 proven. 138 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2023-12-21 01:01:40,607 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:01:40,852 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 39 proven. 138 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2023-12-21 01:01:40,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:01:40,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542989017] [2023-12-21 01:01:40,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:01:40,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740021134] [2023-12-21 01:01:40,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740021134] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:01:40,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:01:40,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-21 01:01:40,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959312088] [2023-12-21 01:01:40,853 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:01:40,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:01:40,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:01:40,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:01:40,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:01:40,854 INFO L87 Difference]: Start difference. First operand 3455 states and 5418 transitions. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 2 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) [2023-12-21 01:01:41,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:01:41,298 INFO L93 Difference]: Finished difference Result 6704 states and 10510 transitions. [2023-12-21 01:01:41,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:01:41,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 2 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) Word has length 424 [2023-12-21 01:01:41,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:01:41,303 INFO L225 Difference]: With dead ends: 6704 [2023-12-21 01:01:41,303 INFO L226 Difference]: Without dead ends: 3371 [2023-12-21 01:01:41,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 840 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-21 01:01:41,307 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 188 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:01:41,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 801 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:01:41,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3371 states. [2023-12-21 01:01:41,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3371 to 3353. [2023-12-21 01:01:41,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3353 states, 3193 states have (on average 1.5496398371437519) internal successors, (4948), 3196 states have internal predecessors, (4948), 149 states have call successors, (149), 10 states have call predecessors, (149), 10 states have return successors, (149), 146 states have call predecessors, (149), 149 states have call successors, (149) [2023-12-21 01:01:41,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 5246 transitions. [2023-12-21 01:01:41,380 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 5246 transitions. Word has length 424 [2023-12-21 01:01:41,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:01:41,381 INFO L495 AbstractCegarLoop]: Abstraction has 3353 states and 5246 transitions. [2023-12-21 01:01:41,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 2 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) [2023-12-21 01:01:41,381 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 5246 transitions. [2023-12-21 01:01:41,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-21 01:01:41,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:01:41,388 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:01:41,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-21 01:01:41,595 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 [2023-12-21 01:01:41,596 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:01:41,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:01:41,596 INFO L85 PathProgramCache]: Analyzing trace with hash 702547420, now seen corresponding path program 1 times [2023-12-21 01:01:41,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:01:41,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595413856] [2023-12-21 01:01:41,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:41,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:01:41,638 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:01:41,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [40405140] [2023-12-21 01:01:41,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:41,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:41,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:01:41,639 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) [2023-12-21 01:01:41,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-21 01:01:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:01:41,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 01:01:42,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:01:42,724 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:01:42,724 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:01:42,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:01:42,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595413856] [2023-12-21 01:01:42,725 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:01:42,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40405140] [2023-12-21 01:01:42,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40405140] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:01:42,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:01:42,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 01:01:42,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648365561] [2023-12-21 01:01:42,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:01:42,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:01:42,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:01:42,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:01:42,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:01:42,729 INFO L87 Difference]: Start difference. First operand 3353 states and 5246 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:43,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:01:43,067 INFO L93 Difference]: Finished difference Result 9632 states and 15099 transitions. [2023-12-21 01:01:43,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:01:43,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 424 [2023-12-21 01:01:43,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:01:43,081 INFO L225 Difference]: With dead ends: 9632 [2023-12-21 01:01:43,082 INFO L226 Difference]: Without dead ends: 6404 [2023-12-21 01:01:43,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:01:43,090 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 417 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:01:43,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1386 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:01:43,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6404 states. [2023-12-21 01:01:43,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6404 to 3352. [2023-12-21 01:01:43,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3352 states, 3192 states have (on average 1.549498746867168) internal successors, (4946), 3195 states have internal predecessors, (4946), 149 states have call successors, (149), 10 states have call predecessors, (149), 10 states have return successors, (149), 146 states have call predecessors, (149), 149 states have call successors, (149) [2023-12-21 01:01:43,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3352 states to 3352 states and 5244 transitions. [2023-12-21 01:01:43,191 INFO L78 Accepts]: Start accepts. Automaton has 3352 states and 5244 transitions. Word has length 424 [2023-12-21 01:01:43,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:01:43,191 INFO L495 AbstractCegarLoop]: Abstraction has 3352 states and 5244 transitions. [2023-12-21 01:01:43,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:43,192 INFO L276 IsEmpty]: Start isEmpty. Operand 3352 states and 5244 transitions. [2023-12-21 01:01:43,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-21 01:01:43,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:01:43,198 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:01:43,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-21 01:01:43,404 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 [2023-12-21 01:01:43,404 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:01:43,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:01:43,405 INFO L85 PathProgramCache]: Analyzing trace with hash 313698012, now seen corresponding path program 1 times [2023-12-21 01:01:43,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:01:43,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709360165] [2023-12-21 01:01:43,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:43,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:01:43,452 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:01:43,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538343784] [2023-12-21 01:01:43,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:43,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:43,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:01:43,453 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) [2023-12-21 01:01:43,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-21 01:01:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:01:43,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 01:01:43,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:01:44,020 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3557 proven. 78 refuted. 0 times theorem prover too weak. 3445 trivial. 0 not checked. [2023-12-21 01:01:44,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:01:44,276 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 99 proven. 78 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2023-12-21 01:01:44,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:01:44,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709360165] [2023-12-21 01:01:44,277 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:01:44,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538343784] [2023-12-21 01:01:44,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538343784] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:01:44,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:01:44,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-21 01:01:44,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244771754] [2023-12-21 01:01:44,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:01:44,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 01:01:44,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:01:44,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 01:01:44,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-21 01:01:44,279 INFO L87 Difference]: Start difference. First operand 3352 states and 5244 transitions. Second operand has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 12 states have internal predecessors, (193), 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) [2023-12-21 01:01:44,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:01:44,774 INFO L93 Difference]: Finished difference Result 6585 states and 10291 transitions. [2023-12-21 01:01:44,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 01:01:44,779 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 12 states have internal predecessors, (193), 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 424 [2023-12-21 01:01:44,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:01:44,784 INFO L225 Difference]: With dead ends: 6585 [2023-12-21 01:01:44,785 INFO L226 Difference]: Without dead ends: 3358 [2023-12-21 01:01:44,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 836 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2023-12-21 01:01:44,788 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 450 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 01:01:44,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 970 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 01:01:44,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2023-12-21 01:01:44,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 3340. [2023-12-21 01:01:44,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3340 states, 3176 states have (on average 1.5390428211586902) internal successors, (4888), 3179 states have internal predecessors, (4888), 149 states have call successors, (149), 14 states have call predecessors, (149), 14 states have return successors, (149), 146 states have call predecessors, (149), 149 states have call successors, (149) [2023-12-21 01:01:44,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3340 states to 3340 states and 5186 transitions. [2023-12-21 01:01:44,862 INFO L78 Accepts]: Start accepts. Automaton has 3340 states and 5186 transitions. Word has length 424 [2023-12-21 01:01:44,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:01:44,862 INFO L495 AbstractCegarLoop]: Abstraction has 3340 states and 5186 transitions. [2023-12-21 01:01:44,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 12 states have internal predecessors, (193), 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) [2023-12-21 01:01:44,863 INFO L276 IsEmpty]: Start isEmpty. Operand 3340 states and 5186 transitions. [2023-12-21 01:01:44,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-21 01:01:44,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:01:44,869 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:01:44,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-21 01:01:45,080 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 [2023-12-21 01:01:45,081 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:01:45,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:01:45,081 INFO L85 PathProgramCache]: Analyzing trace with hash -847866564, now seen corresponding path program 1 times [2023-12-21 01:01:45,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:01:45,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744834101] [2023-12-21 01:01:45,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:45,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:01:45,117 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:01:45,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1913416346] [2023-12-21 01:01:45,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:45,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:45,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:01:45,119 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) [2023-12-21 01:01:45,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-21 01:01:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:01:45,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 01:01:45,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:01:45,495 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:01:45,495 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:01:45,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:01:45,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744834101] [2023-12-21 01:01:45,496 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:01:45,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913416346] [2023-12-21 01:01:45,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913416346] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:01:45,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:01:45,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 01:01:45,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270432963] [2023-12-21 01:01:45,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:01:45,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 01:01:45,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:01:45,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 01:01:45,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:01:45,497 INFO L87 Difference]: Start difference. First operand 3340 states and 5186 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:45,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:01:45,630 INFO L93 Difference]: Finished difference Result 6671 states and 10359 transitions. [2023-12-21 01:01:45,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 01:01:45,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 424 [2023-12-21 01:01:45,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:01:45,636 INFO L225 Difference]: With dead ends: 6671 [2023-12-21 01:01:45,636 INFO L226 Difference]: Without dead ends: 3414 [2023-12-21 01:01:45,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:01:45,640 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 136 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:01:45,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 702 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:01:45,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3414 states. [2023-12-21 01:01:45,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3414 to 2876. [2023-12-21 01:01:45,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2876 states, 2730 states have (on average 1.515018315018315) internal successors, (4136), 2731 states have internal predecessors, (4136), 131 states have call successors, (131), 14 states have call predecessors, (131), 14 states have return successors, (131), 130 states have call predecessors, (131), 131 states have call successors, (131) [2023-12-21 01:01:45,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2876 states to 2876 states and 4398 transitions. [2023-12-21 01:01:45,708 INFO L78 Accepts]: Start accepts. Automaton has 2876 states and 4398 transitions. Word has length 424 [2023-12-21 01:01:45,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:01:45,708 INFO L495 AbstractCegarLoop]: Abstraction has 2876 states and 4398 transitions. [2023-12-21 01:01:45,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:45,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2876 states and 4398 transitions. [2023-12-21 01:01:45,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-21 01:01:45,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:01:45,716 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:01:45,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-21 01:01:45,924 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 [2023-12-21 01:01:45,925 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:01:45,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:01:45,925 INFO L85 PathProgramCache]: Analyzing trace with hash 675411192, now seen corresponding path program 1 times [2023-12-21 01:01:45,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:01:45,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566165055] [2023-12-21 01:01:45,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:45,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:01:45,971 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:01:45,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2087276319] [2023-12-21 01:01:45,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:45,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:45,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:01:45,974 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) [2023-12-21 01:01:45,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-21 01:01:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:01:46,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 01:01:46,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:01:46,456 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:01:46,456 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:01:46,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:01:46,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566165055] [2023-12-21 01:01:46,456 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:01:46,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087276319] [2023-12-21 01:01:46,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087276319] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:01:46,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:01:46,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:01:46,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806631438] [2023-12-21 01:01:46,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:01:46,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:01:46,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:01:46,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:01:46,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:01:46,458 INFO L87 Difference]: Start difference. First operand 2876 states and 4398 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:47,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:01:47,080 INFO L93 Difference]: Finished difference Result 6904 states and 10390 transitions. [2023-12-21 01:01:47,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:01:47,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 424 [2023-12-21 01:01:47,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:01:47,091 INFO L225 Difference]: With dead ends: 6904 [2023-12-21 01:01:47,091 INFO L226 Difference]: Without dead ends: 4161 [2023-12-21 01:01:47,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:01:47,095 INFO L413 NwaCegarLoop]: 793 mSDtfsCounter, 1077 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 01:01:47,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 1784 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 01:01:47,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4161 states. [2023-12-21 01:01:47,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4161 to 2334. [2023-12-21 01:01:47,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2188 states have (on average 1.482632541133455) internal successors, (3244), 2189 states have internal predecessors, (3244), 131 states have call successors, (131), 14 states have call predecessors, (131), 14 states have return successors, (131), 130 states have call predecessors, (131), 131 states have call successors, (131) [2023-12-21 01:01:47,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3506 transitions. [2023-12-21 01:01:47,170 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3506 transitions. Word has length 424 [2023-12-21 01:01:47,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:01:47,170 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3506 transitions. [2023-12-21 01:01:47,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:47,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3506 transitions. [2023-12-21 01:01:47,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-12-21 01:01:47,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:01:47,177 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:01:47,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-21 01:01:47,385 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 [2023-12-21 01:01:47,386 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:01:47,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:01:47,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1116087558, now seen corresponding path program 1 times [2023-12-21 01:01:47,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:01:47,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803011328] [2023-12-21 01:01:47,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:47,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:01:47,437 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:01:47,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1773677874] [2023-12-21 01:01:47,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:47,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:47,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:01:47,439 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) [2023-12-21 01:01:47,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-21 01:01:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:01:47,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 01:01:47,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:01:47,971 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:01:47,971 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:01:47,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:01:47,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803011328] [2023-12-21 01:01:47,972 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:01:47,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773677874] [2023-12-21 01:01:47,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773677874] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:01:47,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:01:47,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 01:01:47,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367074472] [2023-12-21 01:01:47,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:01:47,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 01:01:47,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:01:47,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 01:01:47,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:01:47,973 INFO L87 Difference]: Start difference. First operand 2334 states and 3506 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:48,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:01:48,691 INFO L93 Difference]: Finished difference Result 5523 states and 8261 transitions. [2023-12-21 01:01:48,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:01:48,692 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 425 [2023-12-21 01:01:48,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:01:48,696 INFO L225 Difference]: With dead ends: 5523 [2023-12-21 01:01:48,696 INFO L226 Difference]: Without dead ends: 3322 [2023-12-21 01:01:48,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-21 01:01:48,698 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 1150 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 2555 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 01:01:48,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 2555 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 01:01:48,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3322 states. [2023-12-21 01:01:48,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3322 to 2268. [2023-12-21 01:01:48,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2268 states, 2122 states have (on average 1.4797360980207352) internal successors, (3140), 2123 states have internal predecessors, (3140), 131 states have call successors, (131), 14 states have call predecessors, (131), 14 states have return successors, (131), 130 states have call predecessors, (131), 131 states have call successors, (131) [2023-12-21 01:01:48,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2268 states to 2268 states and 3402 transitions. [2023-12-21 01:01:48,775 INFO L78 Accepts]: Start accepts. Automaton has 2268 states and 3402 transitions. Word has length 425 [2023-12-21 01:01:48,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:01:48,776 INFO L495 AbstractCegarLoop]: Abstraction has 2268 states and 3402 transitions. [2023-12-21 01:01:48,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:48,776 INFO L276 IsEmpty]: Start isEmpty. Operand 2268 states and 3402 transitions. [2023-12-21 01:01:48,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-12-21 01:01:48,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:01:48,781 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:01:48,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-21 01:01:48,995 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 [2023-12-21 01:01:48,995 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:01:48,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:01:48,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1599616600, now seen corresponding path program 1 times [2023-12-21 01:01:48,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:01:48,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548104816] [2023-12-21 01:01:48,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:48,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:01:49,053 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:01:49,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1251756074] [2023-12-21 01:01:49,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:49,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:49,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:01:49,054 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) [2023-12-21 01:01:49,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-21 01:01:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:01:49,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 01:01:49,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:01:49,671 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:01:49,671 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:01:49,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:01:49,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548104816] [2023-12-21 01:01:49,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:01:49,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251756074] [2023-12-21 01:01:49,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251756074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:01:49,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:01:49,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:01:49,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053323706] [2023-12-21 01:01:49,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:01:49,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:01:49,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:01:49,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:01:49,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:01:49,674 INFO L87 Difference]: Start difference. First operand 2268 states and 3402 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:50,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:01:50,073 INFO L93 Difference]: Finished difference Result 5022 states and 7541 transitions. [2023-12-21 01:01:50,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:01:50,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 425 [2023-12-21 01:01:50,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:01:50,078 INFO L225 Difference]: With dead ends: 5022 [2023-12-21 01:01:50,079 INFO L226 Difference]: Without dead ends: 2582 [2023-12-21 01:01:50,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:01:50,085 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 510 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:01:50,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 1368 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:01:50,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2023-12-21 01:01:50,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 2047. [2023-12-21 01:01:50,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2047 states, 1901 states have (on average 1.4771173066806944) internal successors, (2808), 1902 states have internal predecessors, (2808), 131 states have call successors, (131), 14 states have call predecessors, (131), 14 states have return successors, (131), 130 states have call predecessors, (131), 131 states have call successors, (131) [2023-12-21 01:01:50,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 3070 transitions. [2023-12-21 01:01:50,218 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 3070 transitions. Word has length 425 [2023-12-21 01:01:50,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:01:50,218 INFO L495 AbstractCegarLoop]: Abstraction has 2047 states and 3070 transitions. [2023-12-21 01:01:50,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:50,218 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 3070 transitions. [2023-12-21 01:01:50,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-12-21 01:01:50,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:01:50,224 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:01:50,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-21 01:01:50,434 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 [2023-12-21 01:01:50,435 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:01:50,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:01:50,435 INFO L85 PathProgramCache]: Analyzing trace with hash 2082210878, now seen corresponding path program 1 times [2023-12-21 01:01:50,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:01:50,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494800330] [2023-12-21 01:01:50,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:50,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:01:50,488 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:01:50,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2131864761] [2023-12-21 01:01:50,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:50,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:50,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:01:50,493 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) [2023-12-21 01:01:50,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-21 01:01:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:01:51,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-21 01:01:51,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:01:51,103 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:01:51,103 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:01:51,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:01:51,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494800330] [2023-12-21 01:01:51,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:01:51,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131864761] [2023-12-21 01:01:51,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131864761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:01:51,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:01:51,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:01:51,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096009946] [2023-12-21 01:01:51,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:01:51,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:01:51,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:01:51,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:01:51,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:01:51,105 INFO L87 Difference]: Start difference. First operand 2047 states and 3070 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:51,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:01:51,800 INFO L93 Difference]: Finished difference Result 5014 states and 7488 transitions. [2023-12-21 01:01:51,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 01:01:51,800 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 425 [2023-12-21 01:01:51,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:01:51,805 INFO L225 Difference]: With dead ends: 5014 [2023-12-21 01:01:51,805 INFO L226 Difference]: Without dead ends: 3100 [2023-12-21 01:01:51,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:01:51,808 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 1035 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 2093 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 01:01:51,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 2093 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 01:01:51,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2023-12-21 01:01:51,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 2215. [2023-12-21 01:01:51,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2215 states, 2032 states have (on average 1.4660433070866141) internal successors, (2979), 2034 states have internal predecessors, (2979), 164 states have call successors, (164), 18 states have call predecessors, (164), 18 states have return successors, (164), 162 states have call predecessors, (164), 164 states have call successors, (164) [2023-12-21 01:01:51,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 3307 transitions. [2023-12-21 01:01:51,907 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 3307 transitions. Word has length 425 [2023-12-21 01:01:51,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:01:51,907 INFO L495 AbstractCegarLoop]: Abstraction has 2215 states and 3307 transitions. [2023-12-21 01:01:51,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:51,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 3307 transitions. [2023-12-21 01:01:51,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-12-21 01:01:51,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:01:51,912 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:01:51,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-21 01:01:52,120 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 [2023-12-21 01:01:52,120 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:01:52,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:01:52,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1755270172, now seen corresponding path program 1 times [2023-12-21 01:01:52,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:01:52,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248211451] [2023-12-21 01:01:52,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:52,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:01:52,179 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:01:52,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340027740] [2023-12-21 01:01:52,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:52,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:52,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:01:52,181 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:01:52,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-21 01:01:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:01:52,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 01:01:52,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:01:52,844 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:01:52,844 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:01:52,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:01:52,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248211451] [2023-12-21 01:01:52,845 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:01:52,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340027740] [2023-12-21 01:01:52,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340027740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:01:52,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:01:52,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 01:01:52,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414209841] [2023-12-21 01:01:52,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:01:52,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 01:01:52,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:01:52,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 01:01:52,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:01:52,847 INFO L87 Difference]: Start difference. First operand 2215 states and 3307 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:54,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:01:54,302 INFO L93 Difference]: Finished difference Result 6312 states and 9384 transitions. [2023-12-21 01:01:54,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 01:01:54,305 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 425 [2023-12-21 01:01:54,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:01:54,314 INFO L225 Difference]: With dead ends: 6312 [2023-12-21 01:01:54,314 INFO L226 Difference]: Without dead ends: 4196 [2023-12-21 01:01:54,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2023-12-21 01:01:54,318 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 1305 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:01:54,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1305 Valid, 1967 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 01:01:54,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4196 states. [2023-12-21 01:01:54,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4196 to 2209. [2023-12-21 01:01:54,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2209 states, 2026 states have (on average 1.466436327739388) internal successors, (2971), 2028 states have internal predecessors, (2971), 164 states have call successors, (164), 18 states have call predecessors, (164), 18 states have return successors, (164), 162 states have call predecessors, (164), 164 states have call successors, (164) [2023-12-21 01:01:54,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3299 transitions. [2023-12-21 01:01:54,455 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3299 transitions. Word has length 425 [2023-12-21 01:01:54,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:01:54,455 INFO L495 AbstractCegarLoop]: Abstraction has 2209 states and 3299 transitions. [2023-12-21 01:01:54,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:54,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3299 transitions. [2023-12-21 01:01:54,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-12-21 01:01:54,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:01:54,460 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:01:54,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-21 01:01:54,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:54,670 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:01:54,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:01:54,670 INFO L85 PathProgramCache]: Analyzing trace with hash 383462874, now seen corresponding path program 1 times [2023-12-21 01:01:54,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:01:54,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469116238] [2023-12-21 01:01:54,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:54,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:01:54,710 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:01:54,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2076716989] [2023-12-21 01:01:54,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:54,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:54,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:01:54,711 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:01:54,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-21 01:01:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:01:55,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 01:01:55,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:01:55,159 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:01:55,159 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:01:55,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:01:55,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469116238] [2023-12-21 01:01:55,159 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:01:55,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076716989] [2023-12-21 01:01:55,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076716989] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:01:55,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:01:55,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 01:01:55,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985235703] [2023-12-21 01:01:55,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:01:55,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 01:01:55,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:01:55,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 01:01:55,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 01:01:55,161 INFO L87 Difference]: Start difference. First operand 2209 states and 3299 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:55,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:01:55,513 INFO L93 Difference]: Finished difference Result 5312 states and 7951 transitions. [2023-12-21 01:01:55,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 01:01:55,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 425 [2023-12-21 01:01:55,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:01:55,519 INFO L225 Difference]: With dead ends: 5312 [2023-12-21 01:01:55,519 INFO L226 Difference]: Without dead ends: 3236 [2023-12-21 01:01:55,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:01:55,523 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 463 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:01:55,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 1318 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:01:55,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3236 states. [2023-12-21 01:01:55,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3236 to 2464. [2023-12-21 01:01:55,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 2281 states have (on average 1.4682156948706708) internal successors, (3349), 2283 states have internal predecessors, (3349), 164 states have call successors, (164), 18 states have call predecessors, (164), 18 states have return successors, (164), 162 states have call predecessors, (164), 164 states have call successors, (164) [2023-12-21 01:01:55,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 3677 transitions. [2023-12-21 01:01:55,625 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 3677 transitions. Word has length 425 [2023-12-21 01:01:55,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:01:55,625 INFO L495 AbstractCegarLoop]: Abstraction has 2464 states and 3677 transitions. [2023-12-21 01:01:55,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:55,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 3677 transitions. [2023-12-21 01:01:55,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-12-21 01:01:55,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:01:55,630 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:01:55,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-21 01:01:55,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:55,839 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:01:55,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:01:55,839 INFO L85 PathProgramCache]: Analyzing trace with hash 658601312, now seen corresponding path program 1 times [2023-12-21 01:01:55,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:01:55,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868562380] [2023-12-21 01:01:55,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:55,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:01:55,878 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:01:55,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088153329] [2023-12-21 01:01:55,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:55,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:55,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:01:55,881 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:01:55,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-21 01:01:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:01:56,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 01:01:56,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:01:56,446 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:01:56,446 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:01:56,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:01:56,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868562380] [2023-12-21 01:01:56,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:01:56,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088153329] [2023-12-21 01:01:56,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088153329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:01:56,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:01:56,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 01:01:56,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854140268] [2023-12-21 01:01:56,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:01:56,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:01:56,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:01:56,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:01:56,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:01:56,448 INFO L87 Difference]: Start difference. First operand 2464 states and 3677 transitions. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:57,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:01:57,402 INFO L93 Difference]: Finished difference Result 6511 states and 9652 transitions. [2023-12-21 01:01:57,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 01:01:57,403 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 425 [2023-12-21 01:01:57,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:01:57,409 INFO L225 Difference]: With dead ends: 6511 [2023-12-21 01:01:57,410 INFO L226 Difference]: Without dead ends: 4086 [2023-12-21 01:01:57,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-12-21 01:01:57,416 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 1685 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1685 SdHoareTripleChecker+Valid, 2557 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 01:01:57,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1685 Valid, 2557 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 01:01:57,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4086 states. [2023-12-21 01:01:57,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4086 to 2238. [2023-12-21 01:01:57,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2238 states, 2055 states have (on average 1.4491484184914842) internal successors, (2978), 2057 states have internal predecessors, (2978), 164 states have call successors, (164), 18 states have call predecessors, (164), 18 states have return successors, (164), 162 states have call predecessors, (164), 164 states have call successors, (164) [2023-12-21 01:01:57,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2238 states to 2238 states and 3306 transitions. [2023-12-21 01:01:57,524 INFO L78 Accepts]: Start accepts. Automaton has 2238 states and 3306 transitions. Word has length 425 [2023-12-21 01:01:57,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:01:57,525 INFO L495 AbstractCegarLoop]: Abstraction has 2238 states and 3306 transitions. [2023-12-21 01:01:57,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:57,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2238 states and 3306 transitions. [2023-12-21 01:01:57,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-12-21 01:01:57,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:01:57,529 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:01:57,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-21 01:01:57,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:57,738 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:01:57,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:01:57,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1991859606, now seen corresponding path program 1 times [2023-12-21 01:01:57,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:01:57,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222572281] [2023-12-21 01:01:57,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:57,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:01:57,774 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:01:57,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1560042308] [2023-12-21 01:01:57,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:57,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:57,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:01:57,776 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:01:57,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-21 01:01:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:01:58,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 01:01:58,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:01:58,478 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:01:58,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:01:58,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:01:58,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222572281] [2023-12-21 01:01:58,479 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:01:58,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560042308] [2023-12-21 01:01:58,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560042308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:01:58,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:01:58,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 01:01:58,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029295308] [2023-12-21 01:01:58,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:01:58,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 01:01:58,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:01:58,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 01:01:58,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:01:58,481 INFO L87 Difference]: Start difference. First operand 2238 states and 3306 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:59,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:01:59,436 INFO L93 Difference]: Finished difference Result 5664 states and 8307 transitions. [2023-12-21 01:01:59,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 01:01:59,437 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 425 [2023-12-21 01:01:59,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:01:59,442 INFO L225 Difference]: With dead ends: 5664 [2023-12-21 01:01:59,442 INFO L226 Difference]: Without dead ends: 3523 [2023-12-21 01:01:59,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-21 01:01:59,445 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 1260 mSDsluCounter, 2149 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 2666 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 01:01:59,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1260 Valid, 2666 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 01:01:59,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3523 states. [2023-12-21 01:01:59,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3523 to 2238. [2023-12-21 01:01:59,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2238 states, 2055 states have (on average 1.4491484184914842) internal successors, (2978), 2057 states have internal predecessors, (2978), 164 states have call successors, (164), 18 states have call predecessors, (164), 18 states have return successors, (164), 162 states have call predecessors, (164), 164 states have call successors, (164) [2023-12-21 01:01:59,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2238 states to 2238 states and 3306 transitions. [2023-12-21 01:01:59,547 INFO L78 Accepts]: Start accepts. Automaton has 2238 states and 3306 transitions. Word has length 425 [2023-12-21 01:01:59,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:01:59,548 INFO L495 AbstractCegarLoop]: Abstraction has 2238 states and 3306 transitions. [2023-12-21 01:01:59,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:01:59,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2238 states and 3306 transitions. [2023-12-21 01:01:59,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-12-21 01:01:59,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:01:59,553 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:01:59,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-21 01:01:59,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-21 01:01:59,764 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:01:59,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:01:59,764 INFO L85 PathProgramCache]: Analyzing trace with hash 620052308, now seen corresponding path program 1 times [2023-12-21 01:01:59,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:01:59,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74906875] [2023-12-21 01:01:59,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:59,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:01:59,801 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:01:59,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1941515285] [2023-12-21 01:01:59,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:01:59,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:01:59,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:01:59,803 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:01:59,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-21 01:02:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:02:00,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 01:02:00,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:02:00,547 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:02:00,547 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:02:00,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:02:00,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74906875] [2023-12-21 01:02:00,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:02:00,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941515285] [2023-12-21 01:02:00,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941515285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:02:00,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:02:00,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:02:00,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043185337] [2023-12-21 01:02:00,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:02:00,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:02:00,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:02:00,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:02:00,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:02:00,551 INFO L87 Difference]: Start difference. First operand 2238 states and 3306 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:02:00,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:02:00,974 INFO L93 Difference]: Finished difference Result 4605 states and 6797 transitions. [2023-12-21 01:02:00,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:02:00,975 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 425 [2023-12-21 01:02:00,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:02:00,979 INFO L225 Difference]: With dead ends: 4605 [2023-12-21 01:02:00,979 INFO L226 Difference]: Without dead ends: 2491 [2023-12-21 01:02:00,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:02:00,981 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 682 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:02:00,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1439 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:02:00,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2491 states. [2023-12-21 01:02:01,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2491 to 2045. [2023-12-21 01:02:01,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2045 states, 1862 states have (on average 1.4355531686358753) internal successors, (2673), 1864 states have internal predecessors, (2673), 164 states have call successors, (164), 18 states have call predecessors, (164), 18 states have return successors, (164), 162 states have call predecessors, (164), 164 states have call successors, (164) [2023-12-21 01:02:01,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2045 states to 2045 states and 3001 transitions. [2023-12-21 01:02:01,075 INFO L78 Accepts]: Start accepts. Automaton has 2045 states and 3001 transitions. Word has length 425 [2023-12-21 01:02:01,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:02:01,075 INFO L495 AbstractCegarLoop]: Abstraction has 2045 states and 3001 transitions. [2023-12-21 01:02:01,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:02:01,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2045 states and 3001 transitions. [2023-12-21 01:02:01,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-12-21 01:02:01,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:02:01,081 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:02:01,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-21 01:02:01,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-21 01:02:01,294 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:02:01,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:02:01,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1574463000, now seen corresponding path program 1 times [2023-12-21 01:02:01,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:02:01,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820741442] [2023-12-21 01:02:01,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:01,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:02:01,335 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:02:01,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1997289733] [2023-12-21 01:02:01,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:01,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:02:01,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:02:01,336 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:02:01,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-21 01:02:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:02:01,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 01:02:01,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:02:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:02:02,022 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:02:02,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:02:02,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820741442] [2023-12-21 01:02:02,023 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:02:02,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997289733] [2023-12-21 01:02:02,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997289733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:02:02,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:02:02,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:02:02,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23004760] [2023-12-21 01:02:02,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:02:02,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:02:02,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:02:02,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:02:02,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:02:02,025 INFO L87 Difference]: Start difference. First operand 2045 states and 3001 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:02:02,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:02:02,519 INFO L93 Difference]: Finished difference Result 4582 states and 6697 transitions. [2023-12-21 01:02:02,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:02:02,520 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 425 [2023-12-21 01:02:02,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:02:02,523 INFO L225 Difference]: With dead ends: 4582 [2023-12-21 01:02:02,523 INFO L226 Difference]: Without dead ends: 2590 [2023-12-21 01:02:02,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:02:02,525 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 858 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:02:02,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 1228 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:02:02,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2023-12-21 01:02:02,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 2046. [2023-12-21 01:02:02,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2046 states, 1863 states have (on average 1.4358561460010735) internal successors, (2675), 1865 states have internal predecessors, (2675), 164 states have call successors, (164), 18 states have call predecessors, (164), 18 states have return successors, (164), 162 states have call predecessors, (164), 164 states have call successors, (164) [2023-12-21 01:02:02,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2046 states to 2046 states and 3003 transitions. [2023-12-21 01:02:02,621 INFO L78 Accepts]: Start accepts. Automaton has 2046 states and 3003 transitions. Word has length 425 [2023-12-21 01:02:02,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:02:02,622 INFO L495 AbstractCegarLoop]: Abstraction has 2046 states and 3003 transitions. [2023-12-21 01:02:02,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:02:02,622 INFO L276 IsEmpty]: Start isEmpty. Operand 2046 states and 3003 transitions. [2023-12-21 01:02:02,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-12-21 01:02:02,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:02:02,626 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:02:02,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-12-21 01:02:02,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-21 01:02:02,831 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:02:02,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:02:02,831 INFO L85 PathProgramCache]: Analyzing trace with hash 202655702, now seen corresponding path program 1 times [2023-12-21 01:02:02,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:02:02,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499742425] [2023-12-21 01:02:02,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:02,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:02:02,868 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:02:02,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [226815138] [2023-12-21 01:02:02,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:02,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:02:02,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:02:02,870 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:02:02,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-21 01:02:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:02:03,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 01:02:03,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:02:03,621 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3293 proven. 114 refuted. 0 times theorem prover too weak. 3673 trivial. 0 not checked. [2023-12-21 01:02:03,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:02:03,901 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 63 proven. 114 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2023-12-21 01:02:03,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:02:03,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499742425] [2023-12-21 01:02:03,902 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:02:03,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226815138] [2023-12-21 01:02:03,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226815138] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:02:03,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:02:03,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-21 01:02:03,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530238520] [2023-12-21 01:02:03,902 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:02:03,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 01:02:03,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:02:03,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 01:02:03,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:02:03,905 INFO L87 Difference]: Start difference. First operand 2046 states and 3003 transitions. Second operand has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 3 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 3 states have call predecessors, (99), 3 states have call successors, (99) [2023-12-21 01:02:04,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:02:04,364 INFO L93 Difference]: Finished difference Result 3995 states and 5848 transitions. [2023-12-21 01:02:04,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 01:02:04,367 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 3 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 3 states have call predecessors, (99), 3 states have call successors, (99) Word has length 425 [2023-12-21 01:02:04,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:02:04,378 INFO L225 Difference]: With dead ends: 3995 [2023-12-21 01:02:04,378 INFO L226 Difference]: Without dead ends: 2082 [2023-12-21 01:02:04,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 842 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-21 01:02:04,380 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 336 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:02:04,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 716 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:02:04,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2023-12-21 01:02:04,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 2058. [2023-12-21 01:02:04,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2058 states, 1872 states have (on average 1.4150641025641026) internal successors, (2649), 1874 states have internal predecessors, (2649), 164 states have call successors, (164), 21 states have call predecessors, (164), 21 states have return successors, (164), 162 states have call predecessors, (164), 164 states have call successors, (164) [2023-12-21 01:02:04,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2058 states to 2058 states and 2977 transitions. [2023-12-21 01:02:04,514 INFO L78 Accepts]: Start accepts. Automaton has 2058 states and 2977 transitions. Word has length 425 [2023-12-21 01:02:04,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:02:04,515 INFO L495 AbstractCegarLoop]: Abstraction has 2058 states and 2977 transitions. [2023-12-21 01:02:04,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 3 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 3 states have call predecessors, (99), 3 states have call successors, (99) [2023-12-21 01:02:04,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2058 states and 2977 transitions. [2023-12-21 01:02:04,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2023-12-21 01:02:04,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:02:04,518 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:02:04,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-21 01:02:04,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-21 01:02:04,725 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:02:04,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:02:04,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1263018891, now seen corresponding path program 1 times [2023-12-21 01:02:04,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:02:04,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624318271] [2023-12-21 01:02:04,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:04,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:02:04,775 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:02:04,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150554708] [2023-12-21 01:02:04,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:04,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:02:04,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:02:04,777 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:02:04,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-21 01:02:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:02:05,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 01:02:05,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:02:05,534 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 2339 proven. 141 refuted. 0 times theorem prover too weak. 4600 trivial. 0 not checked. [2023-12-21 01:02:05,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:02:05,754 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 36 proven. 141 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2023-12-21 01:02:05,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:02:05,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624318271] [2023-12-21 01:02:05,754 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:02:05,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150554708] [2023-12-21 01:02:05,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150554708] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:02:05,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:02:05,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-21 01:02:05,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849362229] [2023-12-21 01:02:05,755 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:02:05,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:02:05,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:02:05,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:02:05,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:02:05,756 INFO L87 Difference]: Start difference. First operand 2058 states and 2977 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (107), 2 states have call predecessors, (107), 4 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2023-12-21 01:02:06,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:02:06,056 INFO L93 Difference]: Finished difference Result 3162 states and 4588 transitions. [2023-12-21 01:02:06,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:02:06,059 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (107), 2 states have call predecessors, (107), 4 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) Word has length 426 [2023-12-21 01:02:06,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:02:06,061 INFO L225 Difference]: With dead ends: 3162 [2023-12-21 01:02:06,061 INFO L226 Difference]: Without dead ends: 1238 [2023-12-21 01:02:06,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 844 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-21 01:02:06,063 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 361 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:02:06,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 705 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:02:06,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2023-12-21 01:02:06,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1089. [2023-12-21 01:02:06,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 952 states have (on average 1.388655462184874) internal successors, (1322), 952 states have internal predecessors, (1322), 120 states have call successors, (120), 16 states have call predecessors, (120), 16 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-21 01:02:06,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1562 transitions. [2023-12-21 01:02:06,116 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1562 transitions. Word has length 426 [2023-12-21 01:02:06,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:02:06,116 INFO L495 AbstractCegarLoop]: Abstraction has 1089 states and 1562 transitions. [2023-12-21 01:02:06,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (107), 2 states have call predecessors, (107), 4 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2023-12-21 01:02:06,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1562 transitions. [2023-12-21 01:02:06,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2023-12-21 01:02:06,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:02:06,119 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:02:06,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-21 01:02:06,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-21 01:02:06,329 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:02:06,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:02:06,330 INFO L85 PathProgramCache]: Analyzing trace with hash -678332557, now seen corresponding path program 1 times [2023-12-21 01:02:06,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:02:06,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443808043] [2023-12-21 01:02:06,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:06,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:02:06,386 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:02:06,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [889755463] [2023-12-21 01:02:06,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:06,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:02:06,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:02:06,388 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:02:06,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-21 01:02:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:02:06,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-21 01:02:06,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:02:07,028 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:02:07,028 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:02:07,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:02:07,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443808043] [2023-12-21 01:02:07,028 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:02:07,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889755463] [2023-12-21 01:02:07,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889755463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:02:07,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:02:07,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 01:02:07,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412046082] [2023-12-21 01:02:07,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:02:07,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 01:02:07,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:02:07,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 01:02:07,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:02:07,030 INFO L87 Difference]: Start difference. First operand 1089 states and 1562 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:02:08,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:02:08,343 INFO L93 Difference]: Finished difference Result 3181 states and 4572 transitions. [2023-12-21 01:02:08,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 01:02:08,344 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 426 [2023-12-21 01:02:08,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:02:08,347 INFO L225 Difference]: With dead ends: 3181 [2023-12-21 01:02:08,347 INFO L226 Difference]: Without dead ends: 2207 [2023-12-21 01:02:08,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2023-12-21 01:02:08,349 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 1622 mSDsluCounter, 2770 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 3329 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:02:08,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1622 Valid, 3329 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 01:02:08,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2023-12-21 01:02:08,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 1560. [2023-12-21 01:02:08,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1560 states, 1371 states have (on average 1.3953318745441283) internal successors, (1913), 1373 states have internal predecessors, (1913), 164 states have call successors, (164), 24 states have call predecessors, (164), 24 states have return successors, (164), 162 states have call predecessors, (164), 164 states have call successors, (164) [2023-12-21 01:02:08,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 2241 transitions. [2023-12-21 01:02:08,440 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 2241 transitions. Word has length 426 [2023-12-21 01:02:08,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:02:08,440 INFO L495 AbstractCegarLoop]: Abstraction has 1560 states and 2241 transitions. [2023-12-21 01:02:08,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:02:08,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 2241 transitions. [2023-12-21 01:02:08,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2023-12-21 01:02:08,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:02:08,443 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:02:08,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-21 01:02:08,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:02:08,652 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:02:08,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:02:08,652 INFO L85 PathProgramCache]: Analyzing trace with hash -254685835, now seen corresponding path program 1 times [2023-12-21 01:02:08,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:02:08,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527952967] [2023-12-21 01:02:08,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:08,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:02:08,701 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:02:08,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [100835430] [2023-12-21 01:02:08,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:08,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:02:08,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:02:08,703 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:02:08,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-21 01:02:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:02:09,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 01:02:09,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:02:09,505 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 2039 proven. 147 refuted. 0 times theorem prover too weak. 4894 trivial. 0 not checked. [2023-12-21 01:02:09,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:02:09,743 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 30 proven. 147 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2023-12-21 01:02:09,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:02:09,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527952967] [2023-12-21 01:02:09,743 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:02:09,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100835430] [2023-12-21 01:02:09,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100835430] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:02:09,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:02:09,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-21 01:02:09,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598401791] [2023-12-21 01:02:09,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:02:09,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:02:09,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:02:09,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:02:09,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:02:09,745 INFO L87 Difference]: Start difference. First operand 1560 states and 2241 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (109), 2 states have call predecessors, (109), 4 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2023-12-21 01:02:10,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:02:10,081 INFO L93 Difference]: Finished difference Result 2725 states and 3917 transitions. [2023-12-21 01:02:10,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:02:10,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (109), 2 states have call predecessors, (109), 4 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) Word has length 426 [2023-12-21 01:02:10,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:02:10,086 INFO L225 Difference]: With dead ends: 2725 [2023-12-21 01:02:10,086 INFO L226 Difference]: Without dead ends: 1282 [2023-12-21 01:02:10,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 844 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-21 01:02:10,088 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 309 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:02:10,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 677 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:02:10,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2023-12-21 01:02:10,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 860. [2023-12-21 01:02:10,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 721 states have (on average 1.3633841886269071) internal successors, (983), 721 states have internal predecessors, (983), 120 states have call successors, (120), 18 states have call predecessors, (120), 18 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-21 01:02:10,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1223 transitions. [2023-12-21 01:02:10,145 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1223 transitions. Word has length 426 [2023-12-21 01:02:10,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:02:10,146 INFO L495 AbstractCegarLoop]: Abstraction has 860 states and 1223 transitions. [2023-12-21 01:02:10,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (109), 2 states have call predecessors, (109), 4 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2023-12-21 01:02:10,146 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1223 transitions. [2023-12-21 01:02:10,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2023-12-21 01:02:10,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:02:10,148 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:02:10,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-12-21 01:02:10,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:02:10,352 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:02:10,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:02:10,352 INFO L85 PathProgramCache]: Analyzing trace with hash -5999536, now seen corresponding path program 1 times [2023-12-21 01:02:10,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:02:10,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861904017] [2023-12-21 01:02:10,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:10,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:02:10,393 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:02:10,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [598403102] [2023-12-21 01:02:10,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:10,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:02:10,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:02:10,402 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:02:10,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-21 01:02:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:02:10,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-21 01:02:10,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:02:11,191 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:02:11,192 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:02:11,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:02:11,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861904017] [2023-12-21 01:02:11,192 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:02:11,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598403102] [2023-12-21 01:02:11,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598403102] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:02:11,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:02:11,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 01:02:11,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861291444] [2023-12-21 01:02:11,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:02:11,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 01:02:11,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:02:11,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 01:02:11,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:02:11,194 INFO L87 Difference]: Start difference. First operand 860 states and 1223 transitions. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:02:12,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:02:12,227 INFO L93 Difference]: Finished difference Result 2728 states and 3924 transitions. [2023-12-21 01:02:12,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 01:02:12,227 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 426 [2023-12-21 01:02:12,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:02:12,231 INFO L225 Difference]: With dead ends: 2728 [2023-12-21 01:02:12,231 INFO L226 Difference]: Without dead ends: 2013 [2023-12-21 01:02:12,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2023-12-21 01:02:12,233 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1834 mSDsluCounter, 2528 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 3009 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 01:02:12,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1834 Valid, 3009 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 01:02:12,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2023-12-21 01:02:12,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 731. [2023-12-21 01:02:12,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 592 states have (on average 1.3327702702702702) internal successors, (789), 592 states have internal predecessors, (789), 120 states have call successors, (120), 18 states have call predecessors, (120), 18 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-21 01:02:12,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1029 transitions. [2023-12-21 01:02:12,295 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1029 transitions. Word has length 426 [2023-12-21 01:02:12,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:02:12,295 INFO L495 AbstractCegarLoop]: Abstraction has 731 states and 1029 transitions. [2023-12-21 01:02:12,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:02:12,295 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1029 transitions. [2023-12-21 01:02:12,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2023-12-21 01:02:12,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:02:12,297 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:02:12,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-12-21 01:02:12,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:02:12,507 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:02:12,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:02:12,508 INFO L85 PathProgramCache]: Analyzing trace with hash -60392434, now seen corresponding path program 1 times [2023-12-21 01:02:12,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:02:12,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319620026] [2023-12-21 01:02:12,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:12,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:02:12,545 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:02:12,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536999916] [2023-12-21 01:02:12,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:12,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:02:12,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:02:12,546 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:02:12,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-21 01:02:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:02:13,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 01:02:13,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:02:13,231 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:02:13,231 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:02:13,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:02:13,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319620026] [2023-12-21 01:02:13,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:02:13,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536999916] [2023-12-21 01:02:13,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536999916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:02:13,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:02:13,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 01:02:13,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962564221] [2023-12-21 01:02:13,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:02:13,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 01:02:13,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:02:13,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 01:02:13,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 01:02:13,234 INFO L87 Difference]: Start difference. First operand 731 states and 1029 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:02:13,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:02:13,397 INFO L93 Difference]: Finished difference Result 1308 states and 1838 transitions. [2023-12-21 01:02:13,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 01:02:13,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 426 [2023-12-21 01:02:13,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:02:13,399 INFO L225 Difference]: With dead ends: 1308 [2023-12-21 01:02:13,399 INFO L226 Difference]: Without dead ends: 670 [2023-12-21 01:02:13,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:02:13,400 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 191 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:02:13,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 865 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:02:13,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2023-12-21 01:02:13,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 670. [2023-12-21 01:02:13,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 531 states have (on average 1.3276836158192091) internal successors, (705), 531 states have internal predecessors, (705), 120 states have call successors, (120), 18 states have call predecessors, (120), 18 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-21 01:02:13,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 945 transitions. [2023-12-21 01:02:13,467 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 945 transitions. Word has length 426 [2023-12-21 01:02:13,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:02:13,467 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 945 transitions. [2023-12-21 01:02:13,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:02:13,467 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 945 transitions. [2023-12-21 01:02:13,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2023-12-21 01:02:13,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:02:13,469 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:02:13,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-12-21 01:02:13,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-21 01:02:13,679 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:02:13,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:02:13,680 INFO L85 PathProgramCache]: Analyzing trace with hash -123770784, now seen corresponding path program 1 times [2023-12-21 01:02:13,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:02:13,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100892373] [2023-12-21 01:02:13,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:13,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:02:13,716 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:02:13,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1514929507] [2023-12-21 01:02:13,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:13,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:02:13,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:02:13,717 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:02:13,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-21 01:02:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:02:14,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 01:02:14,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:02:14,246 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:02:14,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:02:14,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:02:14,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100892373] [2023-12-21 01:02:14,246 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:02:14,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514929507] [2023-12-21 01:02:14,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514929507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:02:14,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:02:14,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 01:02:14,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764265772] [2023-12-21 01:02:14,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:02:14,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 01:02:14,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:02:14,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 01:02:14,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:02:14,258 INFO L87 Difference]: Start difference. First operand 670 states and 945 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:02:14,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:02:14,385 INFO L93 Difference]: Finished difference Result 1343 states and 1887 transitions. [2023-12-21 01:02:14,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 01:02:14,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 427 [2023-12-21 01:02:14,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:02:14,387 INFO L225 Difference]: With dead ends: 1343 [2023-12-21 01:02:14,388 INFO L226 Difference]: Without dead ends: 818 [2023-12-21 01:02:14,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 01:02:14,389 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 321 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:02:14,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 921 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:02:14,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-12-21 01:02:14,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 607. [2023-12-21 01:02:14,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 468 states have (on average 1.2799145299145298) internal successors, (599), 468 states have internal predecessors, (599), 120 states have call successors, (120), 18 states have call predecessors, (120), 18 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-21 01:02:14,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 839 transitions. [2023-12-21 01:02:14,444 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 839 transitions. Word has length 427 [2023-12-21 01:02:14,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:02:14,444 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 839 transitions. [2023-12-21 01:02:14,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:02:14,445 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 839 transitions. [2023-12-21 01:02:14,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2023-12-21 01:02:14,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:02:14,447 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:02:14,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-12-21 01:02:14,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:02:14,647 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:02:14,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:02:14,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1715378868, now seen corresponding path program 1 times [2023-12-21 01:02:14,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:02:14,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30931146] [2023-12-21 01:02:14,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:14,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:02:14,684 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:02:14,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [130443171] [2023-12-21 01:02:14,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:14,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:02:14,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:02:14,685 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:02:14,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-21 01:02:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:02:15,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 1094 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 01:02:15,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:02:15,419 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3443 proven. 69 refuted. 0 times theorem prover too weak. 3568 trivial. 0 not checked. [2023-12-21 01:02:15,419 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:02:15,593 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 108 proven. 69 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2023-12-21 01:02:15,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:02:15,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30931146] [2023-12-21 01:02:15,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:02:15,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130443171] [2023-12-21 01:02:15,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130443171] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:02:15,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:02:15,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-21 01:02:15,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425524973] [2023-12-21 01:02:15,594 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:02:15,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:02:15,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:02:15,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:02:15,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:02:15,597 INFO L87 Difference]: Start difference. First operand 607 states and 839 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 2 states have call successors, (83), 2 states have call predecessors, (83), 4 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2023-12-21 01:02:15,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:02:15,903 INFO L93 Difference]: Finished difference Result 993 states and 1363 transitions. [2023-12-21 01:02:15,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:02:15,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 2 states have call successors, (83), 2 states have call predecessors, (83), 4 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) Word has length 427 [2023-12-21 01:02:15,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:02:15,907 INFO L225 Difference]: With dead ends: 993 [2023-12-21 01:02:15,907 INFO L226 Difference]: Without dead ends: 531 [2023-12-21 01:02:15,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 856 GetRequests, 846 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-21 01:02:15,907 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 214 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:02:15,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 637 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:02:15,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2023-12-21 01:02:15,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 507. [2023-12-21 01:02:15,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 366 states have (on average 1.2540983606557377) internal successors, (459), 366 states have internal predecessors, (459), 120 states have call successors, (120), 20 states have call predecessors, (120), 20 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-21 01:02:15,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 699 transitions. [2023-12-21 01:02:15,960 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 699 transitions. Word has length 427 [2023-12-21 01:02:15,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:02:15,961 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 699 transitions. [2023-12-21 01:02:15,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 2 states have call successors, (83), 2 states have call predecessors, (83), 4 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2023-12-21 01:02:15,961 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 699 transitions. [2023-12-21 01:02:15,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2023-12-21 01:02:15,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:02:15,962 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:02:15,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-12-21 01:02:16,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-21 01:02:16,163 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:02:16,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:02:16,163 INFO L85 PathProgramCache]: Analyzing trace with hash 79037656, now seen corresponding path program 1 times [2023-12-21 01:02:16,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:02:16,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270981494] [2023-12-21 01:02:16,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:16,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:02:16,204 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:02:16,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1070762307] [2023-12-21 01:02:16,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:16,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:02:16,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:02:16,206 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:02:16,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-21 01:02:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:02:16,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 01:02:16,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:02:16,830 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:02:16,830 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:02:16,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:02:16,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270981494] [2023-12-21 01:02:16,830 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:02:16,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070762307] [2023-12-21 01:02:16,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070762307] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:02:16,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:02:16,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 01:02:16,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713437202] [2023-12-21 01:02:16,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:02:16,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:02:16,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:02:16,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:02:16,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:02:16,832 INFO L87 Difference]: Start difference. First operand 507 states and 699 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:02:17,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:02:17,634 INFO L93 Difference]: Finished difference Result 1127 states and 1554 transitions. [2023-12-21 01:02:17,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 01:02:17,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 427 [2023-12-21 01:02:17,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:02:17,636 INFO L225 Difference]: With dead ends: 1127 [2023-12-21 01:02:17,636 INFO L226 Difference]: Without dead ends: 769 [2023-12-21 01:02:17,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2023-12-21 01:02:17,637 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 1236 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 654 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 01:02:17,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1236 Valid, 1896 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [654 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 01:02:17,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2023-12-21 01:02:17,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 507. [2023-12-21 01:02:17,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 366 states have (on average 1.2540983606557377) internal successors, (459), 366 states have internal predecessors, (459), 120 states have call successors, (120), 20 states have call predecessors, (120), 20 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-21 01:02:17,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 699 transitions. [2023-12-21 01:02:17,708 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 699 transitions. Word has length 427 [2023-12-21 01:02:17,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:02:17,708 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 699 transitions. [2023-12-21 01:02:17,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:02:17,709 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 699 transitions. [2023-12-21 01:02:17,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2023-12-21 01:02:17,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:02:17,710 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:02:17,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-12-21 01:02:17,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:02:17,920 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:02:17,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:02:17,921 INFO L85 PathProgramCache]: Analyzing trace with hash 502684378, now seen corresponding path program 1 times [2023-12-21 01:02:17,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:02:17,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079461833] [2023-12-21 01:02:17,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:17,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:02:17,957 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:02:17,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1695965859] [2023-12-21 01:02:17,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:17,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:02:17,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:02:17,959 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:02:17,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-21 01:02:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:02:18,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 01:02:18,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:02:18,609 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-21 01:02:18,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:02:18,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:02:18,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079461833] [2023-12-21 01:02:18,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:02:18,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695965859] [2023-12-21 01:02:18,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695965859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:02:18,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:02:18,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 01:02:18,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750931369] [2023-12-21 01:02:18,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:02:18,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 01:02:18,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:02:18,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 01:02:18,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:02:18,611 INFO L87 Difference]: Start difference. First operand 507 states and 699 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 8 states have internal predecessors, (130), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:02:18,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:02:18,926 INFO L93 Difference]: Finished difference Result 785 states and 1082 transitions. [2023-12-21 01:02:18,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:02:18,927 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 8 states have internal predecessors, (130), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 427 [2023-12-21 01:02:18,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:02:18,928 INFO L225 Difference]: With dead ends: 785 [2023-12-21 01:02:18,928 INFO L226 Difference]: Without dead ends: 423 [2023-12-21 01:02:18,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 01:02:18,929 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 466 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:02:18,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 1161 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:02:18,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2023-12-21 01:02:18,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2023-12-21 01:02:18,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 282 states have (on average 1.2092198581560283) internal successors, (341), 282 states have internal predecessors, (341), 120 states have call successors, (120), 20 states have call predecessors, (120), 20 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-21 01:02:18,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 581 transitions. [2023-12-21 01:02:18,986 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 581 transitions. Word has length 427 [2023-12-21 01:02:18,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:02:18,986 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 581 transitions. [2023-12-21 01:02:18,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 8 states have internal predecessors, (130), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-21 01:02:18,986 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 581 transitions. [2023-12-21 01:02:18,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2023-12-21 01:02:18,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:02:18,988 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:02:18,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-12-21 01:02:19,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-21 01:02:19,189 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:02:19,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:02:19,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1044894068, now seen corresponding path program 1 times [2023-12-21 01:02:19,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:02:19,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171865572] [2023-12-21 01:02:19,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:19,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:02:19,225 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:02:19,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265252553] [2023-12-21 01:02:19,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:19,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:02:19,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:02:19,226 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:02:19,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-21 01:02:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:02:19,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-21 01:02:19,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:02:21,128 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3585 proven. 150 refuted. 0 times theorem prover too weak. 3345 trivial. 0 not checked. [2023-12-21 01:02:21,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:02:26,542 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 198 proven. 153 refuted. 0 times theorem prover too weak. 6729 trivial. 0 not checked. [2023-12-21 01:02:26,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:02:26,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171865572] [2023-12-21 01:02:26,543 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:02:26,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265252553] [2023-12-21 01:02:26,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265252553] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:02:26,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:02:26,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2023-12-21 01:02:26,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928946795] [2023-12-21 01:02:26,543 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:02:26,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 01:02:26,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:02:26,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 01:02:26,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-12-21 01:02:26,545 INFO L87 Difference]: Start difference. First operand 423 states and 581 transitions. Second operand has 24 states, 23 states have (on average 10.91304347826087) internal successors, (251), 22 states have internal predecessors, (251), 6 states have call successors, (120), 4 states have call predecessors, (120), 7 states have return successors, (120), 6 states have call predecessors, (120), 6 states have call successors, (120) [2023-12-21 01:02:28,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:02:28,465 INFO L93 Difference]: Finished difference Result 730 states and 996 transitions. [2023-12-21 01:02:28,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-21 01:02:28,466 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 10.91304347826087) internal successors, (251), 22 states have internal predecessors, (251), 6 states have call successors, (120), 4 states have call predecessors, (120), 7 states have return successors, (120), 6 states have call predecessors, (120), 6 states have call successors, (120) Word has length 427 [2023-12-21 01:02:28,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:02:28,467 INFO L225 Difference]: With dead ends: 730 [2023-12-21 01:02:28,467 INFO L226 Difference]: Without dead ends: 456 [2023-12-21 01:02:28,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 832 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=694, Invalid=1958, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 01:02:28,469 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 1113 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 816 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 2366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 816 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:02:28,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1113 Valid, 1306 Invalid, 2366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [816 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 01:02:28,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2023-12-21 01:02:28,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 423. [2023-12-21 01:02:28,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 282 states have (on average 1.202127659574468) internal successors, (339), 282 states have internal predecessors, (339), 120 states have call successors, (120), 20 states have call predecessors, (120), 20 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-21 01:02:28,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 579 transitions. [2023-12-21 01:02:28,534 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 579 transitions. Word has length 427 [2023-12-21 01:02:28,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:02:28,534 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 579 transitions. [2023-12-21 01:02:28,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 10.91304347826087) internal successors, (251), 22 states have internal predecessors, (251), 6 states have call successors, (120), 4 states have call predecessors, (120), 7 states have return successors, (120), 6 states have call predecessors, (120), 6 states have call successors, (120) [2023-12-21 01:02:28,534 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 579 transitions. [2023-12-21 01:02:28,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2023-12-21 01:02:28,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:02:28,536 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:02:28,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-12-21 01:02:28,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-21 01:02:28,737 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:02:28,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:02:28,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1932334818, now seen corresponding path program 1 times [2023-12-21 01:02:28,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:02:28,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894631823] [2023-12-21 01:02:28,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:28,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:02:28,773 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:02:28,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [388878298] [2023-12-21 01:02:28,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:28,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:02:28,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:02:28,775 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:02:28,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-21 01:02:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:02:29,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 01:02:29,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:02:30,378 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 4649 proven. 273 refuted. 0 times theorem prover too weak. 2158 trivial. 0 not checked. [2023-12-21 01:02:30,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:02:30,705 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 186 proven. 165 refuted. 0 times theorem prover too weak. 6729 trivial. 0 not checked. [2023-12-21 01:02:30,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:02:30,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894631823] [2023-12-21 01:02:30,706 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:02:30,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388878298] [2023-12-21 01:02:30,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388878298] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:02:30,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:02:30,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2023-12-21 01:02:30,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888576824] [2023-12-21 01:02:30,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:02:30,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 01:02:30,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:02:30,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 01:02:30,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2023-12-21 01:02:30,708 INFO L87 Difference]: Start difference. First operand 423 states and 579 transitions. Second operand has 19 states, 19 states have (on average 10.473684210526315) internal successors, (199), 18 states have internal predecessors, (199), 6 states have call successors, (100), 4 states have call predecessors, (100), 8 states have return successors, (101), 6 states have call predecessors, (101), 6 states have call successors, (101) [2023-12-21 01:02:31,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:02:31,407 INFO L93 Difference]: Finished difference Result 753 states and 1003 transitions. [2023-12-21 01:02:31,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 01:02:31,408 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.473684210526315) internal successors, (199), 18 states have internal predecessors, (199), 6 states have call successors, (100), 4 states have call predecessors, (100), 8 states have return successors, (101), 6 states have call predecessors, (101), 6 states have call successors, (101) Word has length 428 [2023-12-21 01:02:31,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:02:31,409 INFO L225 Difference]: With dead ends: 753 [2023-12-21 01:02:31,409 INFO L226 Difference]: Without dead ends: 479 [2023-12-21 01:02:31,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 867 GetRequests, 837 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=347, Invalid=645, Unknown=0, NotChecked=0, Total=992 [2023-12-21 01:02:31,410 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 575 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 01:02:31,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 733 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 01:02:31,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2023-12-21 01:02:31,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 455. [2023-12-21 01:02:31,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 306 states have (on average 1.1830065359477124) internal successors, (362), 306 states have internal predecessors, (362), 120 states have call successors, (120), 28 states have call predecessors, (120), 28 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-21 01:02:31,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 602 transitions. [2023-12-21 01:02:31,482 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 602 transitions. Word has length 428 [2023-12-21 01:02:31,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:02:31,483 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 602 transitions. [2023-12-21 01:02:31,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.473684210526315) internal successors, (199), 18 states have internal predecessors, (199), 6 states have call successors, (100), 4 states have call predecessors, (100), 8 states have return successors, (101), 6 states have call predecessors, (101), 6 states have call successors, (101) [2023-12-21 01:02:31,483 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 602 transitions. [2023-12-21 01:02:31,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2023-12-21 01:02:31,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:02:31,485 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:02:31,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-12-21 01:02:31,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-21 01:02:31,688 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:02:31,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:02:31,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1408692320, now seen corresponding path program 1 times [2023-12-21 01:02:31,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:02:31,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186113112] [2023-12-21 01:02:31,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:31,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:02:31,725 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:02:31,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1706215287] [2023-12-21 01:02:31,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:31,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:02:31,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:02:31,726 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:02:31,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-21 01:02:32,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:02:32,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 01:02:32,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:02:33,244 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3585 proven. 150 refuted. 0 times theorem prover too weak. 3345 trivial. 0 not checked. [2023-12-21 01:02:33,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:02:34,086 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 99 proven. 78 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2023-12-21 01:02:34,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:02:34,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186113112] [2023-12-21 01:02:34,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:02:34,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706215287] [2023-12-21 01:02:34,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706215287] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:02:34,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:02:34,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2023-12-21 01:02:34,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320059440] [2023-12-21 01:02:34,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:02:34,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 01:02:34,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:02:34,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 01:02:34,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2023-12-21 01:02:34,089 INFO L87 Difference]: Start difference. First operand 455 states and 602 transitions. Second operand has 16 states, 16 states have (on average 14.75) internal successors, (236), 15 states have internal predecessors, (236), 4 states have call successors, (86), 3 states have call predecessors, (86), 5 states have return successors, (87), 4 states have call predecessors, (87), 4 states have call successors, (87) [2023-12-21 01:02:35,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:02:35,577 INFO L93 Difference]: Finished difference Result 1024 states and 1336 transitions. [2023-12-21 01:02:35,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-21 01:02:35,578 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 14.75) internal successors, (236), 15 states have internal predecessors, (236), 4 states have call successors, (86), 3 states have call predecessors, (86), 5 states have return successors, (87), 4 states have call predecessors, (87), 4 states have call successors, (87) Word has length 428 [2023-12-21 01:02:35,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:02:35,579 INFO L225 Difference]: With dead ends: 1024 [2023-12-21 01:02:35,579 INFO L226 Difference]: Without dead ends: 734 [2023-12-21 01:02:35,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 840 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=274, Invalid=656, Unknown=0, NotChecked=0, Total=930 [2023-12-21 01:02:35,580 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 510 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 1731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:02:35,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 1633 Invalid, 1731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 01:02:35,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2023-12-21 01:02:35,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 467. [2023-12-21 01:02:35,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 318 states have (on average 1.1855345911949686) internal successors, (377), 318 states have internal predecessors, (377), 120 states have call successors, (120), 28 states have call predecessors, (120), 28 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-21 01:02:35,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 617 transitions. [2023-12-21 01:02:35,658 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 617 transitions. Word has length 428 [2023-12-21 01:02:35,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:02:35,659 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 617 transitions. [2023-12-21 01:02:35,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.75) internal successors, (236), 15 states have internal predecessors, (236), 4 states have call successors, (86), 3 states have call predecessors, (86), 5 states have return successors, (87), 4 states have call predecessors, (87), 4 states have call successors, (87) [2023-12-21 01:02:35,659 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 617 transitions. [2023-12-21 01:02:35,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2023-12-21 01:02:35,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:02:35,661 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:02:35,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-12-21 01:02:35,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-21 01:02:35,869 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:02:35,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:02:35,869 INFO L85 PathProgramCache]: Analyzing trace with hash 397575070, now seen corresponding path program 1 times [2023-12-21 01:02:35,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:02:35,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590494982] [2023-12-21 01:02:35,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:35,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:02:35,910 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:02:35,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998912814] [2023-12-21 01:02:35,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:02:35,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:02:35,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:02:35,912 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:02:35,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-21 01:02:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:02:36,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-21 01:02:36,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:02:40,837 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3853 proven. 420 refuted. 0 times theorem prover too weak. 2807 trivial. 0 not checked. [2023-12-21 01:02:40,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:03:18,673 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 01:03:35,626 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 01:03:42,843 WARN L293 SmtUtils]: Spent 5.20s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 01:03:50,873 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 01:04:09,037 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 01:04:15,119 WARN L293 SmtUtils]: Spent 6.08s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 01:04:21,739 WARN L293 SmtUtils]: Spent 6.62s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 01:04:35,787 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 01:04:45,394 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 01:04:53,437 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 01:05:10,496 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 01:05:33,866 WARN L293 SmtUtils]: Spent 5.49s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 01:06:03,612 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 01:06:18,746 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 01:07:45,320 WARN L293 SmtUtils]: Spent 36.26s on a formula simplification. DAG size of input: 139 DAG size of output: 127 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 01:07:45,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:07:45,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590494982] [2023-12-21 01:07:45,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:07:45,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998912814] [2023-12-21 01:07:45,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998912814] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 01:07:45,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-21 01:07:45,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-12-21 01:07:45,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840402084] [2023-12-21 01:07:45,323 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-21 01:07:45,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 01:07:45,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:07:45,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 01:07:45,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=633, Unknown=2, NotChecked=0, Total=756 [2023-12-21 01:07:45,324 INFO L87 Difference]: Start difference. First operand 467 states and 617 transitions. Second operand has 18 states, 18 states have (on average 8.277777777777779) internal successors, (149), 17 states have internal predecessors, (149), 4 states have call successors, (60), 4 states have call predecessors, (60), 7 states have return successors, (60), 4 states have call predecessors, (60), 4 states have call successors, (60) [2023-12-21 01:07:48,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:07:48,249 INFO L93 Difference]: Finished difference Result 1264 states and 1670 transitions. [2023-12-21 01:07:48,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-21 01:07:48,251 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.277777777777779) internal successors, (149), 17 states have internal predecessors, (149), 4 states have call successors, (60), 4 states have call predecessors, (60), 7 states have return successors, (60), 4 states have call predecessors, (60), 4 states have call successors, (60) Word has length 428 [2023-12-21 01:07:48,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:07:48,253 INFO L225 Difference]: With dead ends: 1264 [2023-12-21 01:07:48,253 INFO L226 Difference]: Without dead ends: 962 [2023-12-21 01:07:48,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 779 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 59.5s TimeCoverageRelationStatistics Valid=564, Invalid=2190, Unknown=2, NotChecked=0, Total=2756 [2023-12-21 01:07:48,254 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 2189 mSDsluCounter, 2181 mSDsCounter, 0 mSdLazyCounter, 1814 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2189 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 1957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 01:07:48,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2189 Valid, 2397 Invalid, 1957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1814 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 01:07:48,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2023-12-21 01:07:48,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 574. [2023-12-21 01:07:48,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 422 states have (on average 1.2085308056872037) internal successors, (510), 422 states have internal predecessors, (510), 120 states have call successors, (120), 31 states have call predecessors, (120), 31 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-21 01:07:48,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 750 transitions. [2023-12-21 01:07:48,339 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 750 transitions. Word has length 428 [2023-12-21 01:07:48,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:07:48,340 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 750 transitions. [2023-12-21 01:07:48,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.277777777777779) internal successors, (149), 17 states have internal predecessors, (149), 4 states have call successors, (60), 4 states have call predecessors, (60), 7 states have return successors, (60), 4 states have call predecessors, (60), 4 states have call successors, (60) [2023-12-21 01:07:48,340 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 750 transitions. [2023-12-21 01:07:48,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2023-12-21 01:07:48,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:07:48,342 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:07:48,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-12-21 01:07:48,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:07:48,542 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:07:48,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:07:48,542 INFO L85 PathProgramCache]: Analyzing trace with hash -2091953892, now seen corresponding path program 1 times [2023-12-21 01:07:48,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:07:48,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375644274] [2023-12-21 01:07:48,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:07:48,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:07:48,577 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:07:48,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [673587995] [2023-12-21 01:07:48,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:07:48,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:07:48,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:07:48,578 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:07:48,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-12-21 01:07:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:07:51,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 01:07:51,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:07:53,047 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 4409 proven. 183 refuted. 0 times theorem prover too weak. 2488 trivial. 0 not checked. [2023-12-21 01:07:53,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:08:41,403 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 01:09:56,370 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 01:11:48,156 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 01:12:19,976 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 01:12:45,495 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 01:12:53,523 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 01:13:06,948 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 01:13:16,102 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 01:13:50,250 WARN L293 SmtUtils]: Spent 13.85s on a formula simplification. DAG size of input: 109 DAG size of output: 77 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 01:15:08,800 WARN L293 SmtUtils]: Spent 6.86s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-12-21 01:15:41,946 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 [2023-12-21 01:15:41,984 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 01:15:42,086 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 01:15:42,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-12-21 01:15:42,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:15:42,296 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 429 with TraceHistMax 60,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ∧-20-4-4-4-4-4-3-5-3-1 context. [2023-12-21 01:15:42,300 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 01:15:42,301 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 01:15:42,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 01:15:42 BoogieIcfgContainer [2023-12-21 01:15:42,303 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 01:15:42,303 INFO L158 Benchmark]: Toolchain (without parser) took 861605.62ms. Allocated memory was 290.5MB in the beginning and 1.1GB in the end (delta: 769.7MB). Free memory was 243.1MB in the beginning and 399.3MB in the end (delta: -156.3MB). Peak memory consumption was 668.7MB. Max. memory is 8.0GB. [2023-12-21 01:15:42,303 INFO L158 Benchmark]: CDTParser took 2.11ms. Allocated memory is still 195.0MB. Free memory is still 144.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 01:15:42,303 INFO L158 Benchmark]: CACSL2BoogieTranslator took 518.40ms. Allocated memory is still 290.5MB. Free memory was 242.5MB in the beginning and 203.2MB in the end (delta: 39.3MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2023-12-21 01:15:42,303 INFO L158 Benchmark]: Boogie Procedure Inliner took 116.92ms. Allocated memory is still 290.5MB. Free memory was 203.2MB in the beginning and 176.5MB in the end (delta: 26.7MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-12-21 01:15:42,303 INFO L158 Benchmark]: Boogie Preprocessor took 260.49ms. Allocated memory is still 290.5MB. Free memory was 176.5MB in the beginning and 230.4MB in the end (delta: -53.9MB). Peak memory consumption was 129.0MB. Max. memory is 8.0GB. [2023-12-21 01:15:42,303 INFO L158 Benchmark]: RCFGBuilder took 1179.33ms. Allocated memory is still 290.5MB. Free memory was 230.4MB in the beginning and 211.3MB in the end (delta: 19.1MB). Peak memory consumption was 123.0MB. Max. memory is 8.0GB. [2023-12-21 01:15:42,303 INFO L158 Benchmark]: TraceAbstraction took 859525.32ms. Allocated memory was 290.5MB in the beginning and 1.1GB in the end (delta: 769.7MB). Free memory was 210.8MB in the beginning and 399.3MB in the end (delta: -188.6MB). Peak memory consumption was 635.3MB. Max. memory is 8.0GB. [2023-12-21 01:15:42,304 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.11ms. Allocated memory is still 195.0MB. Free memory is still 144.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 518.40ms. Allocated memory is still 290.5MB. Free memory was 242.5MB in the beginning and 203.2MB in the end (delta: 39.3MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 116.92ms. Allocated memory is still 290.5MB. Free memory was 203.2MB in the beginning and 176.5MB in the end (delta: 26.7MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 260.49ms. Allocated memory is still 290.5MB. Free memory was 176.5MB in the beginning and 230.4MB in the end (delta: -53.9MB). Peak memory consumption was 129.0MB. Max. memory is 8.0GB. * RCFGBuilder took 1179.33ms. Allocated memory is still 290.5MB. Free memory was 230.4MB in the beginning and 211.3MB in the end (delta: 19.1MB). Peak memory consumption was 123.0MB. Max. memory is 8.0GB. * TraceAbstraction took 859525.32ms. Allocated memory was 290.5MB in the beginning and 1.1GB in the end (delta: 769.7MB). Free memory was 210.8MB in the beginning and 399.3MB in the end (delta: -188.6MB). Peak memory consumption was 635.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 429 with TraceHistMax 60,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ∧-20-4-4-4-4-4-3-5-3-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 224 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 859.5s, OverallIterations: 42, TraceHistogramMax: 60, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 27.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34589 SdHoareTripleChecker+Valid, 18.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34382 mSDsluCounter, 62347 SdHoareTripleChecker+Invalid, 15.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 43675 mSDsCounter, 6349 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16178 IncrementalHoareTripleChecker+Invalid, 22527 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6349 mSolverCounterUnsat, 18672 mSDtfsCounter, 16178 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21872 GetRequests, 21421 SyntacticMatches, 5 SemanticMatches, 446 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2009 ImplicationChecksByTransitivity, 62.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3455occurred in iteration=13, InterpolantAutomatonStates: 414, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.4s AutomataMinimizationTime, 41 MinimizatonAttempts, 43639 StatesRemovedByMinimization, 38 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.4s SsaConstructionTime, 6.4s SatisfiabilityAnalysisTime, 325.8s InterpolantComputationTime, 17848 NumberOfCodeBlocks, 17848 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 21210 ConstructedInterpolants, 0 QuantifiedInterpolants, 66162 SizeOfPredicates, 159 NumberOfNonLiveVariables, 44616 ConjunctsInSsa, 358 ConjunctsInUnsatCore, 50 InterpolantComputations, 31 PerfectInterpolantSequences, 351237/354000 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