/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-18.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:16:54,698 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:16:54,763 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:16:54,766 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:16:54,767 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:16:54,789 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:16:54,789 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:16:54,790 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:16:54,790 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:16:54,793 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:16:54,793 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:16:54,794 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:16:54,794 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:16:54,795 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:16:54,795 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:16:54,795 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:16:54,796 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:16:54,796 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:16:54,796 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:16:54,797 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:16:54,797 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:16:54,797 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:16:54,798 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:16:54,798 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:16:54,798 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:16:54,798 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:16:54,798 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:16:54,798 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:16:54,799 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:16:54,799 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:16:54,799 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:16:54,800 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:16:54,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:16:54,800 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:16:54,800 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:16:54,800 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:16:54,800 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:16:54,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:16:54,801 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:16:54,801 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:16:54,801 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:16:54,801 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:16:54,801 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:16:54,801 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:16:54,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:16:54,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:16:54,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:16:54,989 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:16:54,989 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:16:54,990 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-18.i [2023-12-15 21:16:56,050 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:16:56,295 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:16:56,296 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-18.i [2023-12-15 21:16:56,332 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4d7fe7e1/91c27a4ecff54cd7a12842ed867ce4d8/FLAG3f9c43619 [2023-12-15 21:16:56,342 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4d7fe7e1/91c27a4ecff54cd7a12842ed867ce4d8 [2023-12-15 21:16:56,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:16:56,345 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:16:56,346 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:16:56,346 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:16:56,352 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:16:56,353 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:16:56" (1/1) ... [2023-12-15 21:16:56,354 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dd4f647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:56, skipping insertion in model container [2023-12-15 21:16:56,354 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:16:56" (1/1) ... [2023-12-15 21:16:56,392 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:16:56,495 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-18.i[916,929] [2023-12-15 21:16:56,660 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:16:56,671 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:16:56,679 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-18.i[916,929] [2023-12-15 21:16:56,767 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:16:56,781 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:16:56,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:56 WrapperNode [2023-12-15 21:16:56,782 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:16:56,782 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:16:56,782 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:16:56,782 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:16:56,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:56" (1/1) ... [2023-12-15 21:16:56,804 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:56" (1/1) ... [2023-12-15 21:16:56,868 INFO L138 Inliner]: procedures = 26, calls = 90, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 712 [2023-12-15 21:16:56,869 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:16:56,869 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:16:56,869 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:16:56,870 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:16:56,877 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:56" (1/1) ... [2023-12-15 21:16:56,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:56" (1/1) ... [2023-12-15 21:16:56,901 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:56" (1/1) ... [2023-12-15 21:16:56,990 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 21:16:56,991 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:56" (1/1) ... [2023-12-15 21:16:56,991 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:56" (1/1) ... [2023-12-15 21:16:57,009 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:56" (1/1) ... [2023-12-15 21:16:57,026 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:56" (1/1) ... [2023-12-15 21:16:57,032 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:56" (1/1) ... [2023-12-15 21:16:57,037 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:56" (1/1) ... [2023-12-15 21:16:57,051 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:16:57,051 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:16:57,052 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:16:57,052 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:16:57,052 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:56" (1/1) ... [2023-12-15 21:16:57,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:16:57,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:16:57,109 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 21:16:57,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 21:16:57,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:16:57,200 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:16:57,200 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:16:57,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:16:57,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:16:57,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:16:57,313 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:16:57,317 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:16:58,133 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:16:58,200 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:16:58,200 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:16:58,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:16:58 BoogieIcfgContainer [2023-12-15 21:16:58,200 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:16:58,202 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:16:58,202 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:16:58,204 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:16:58,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:16:56" (1/3) ... [2023-12-15 21:16:58,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d5fa4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:16:58, skipping insertion in model container [2023-12-15 21:16:58,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:16:56" (2/3) ... [2023-12-15 21:16:58,206 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d5fa4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:16:58, skipping insertion in model container [2023-12-15 21:16:58,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:16:58" (3/3) ... [2023-12-15 21:16:58,206 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-18.i [2023-12-15 21:16:58,218 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:16:58,218 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:16:58,266 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:16:58,272 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;@4bf65b12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:16:58,272 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:16:58,278 INFO L276 IsEmpty]: Start isEmpty. Operand has 267 states, 187 states have (on average 1.572192513368984) internal successors, (294), 188 states have internal predecessors, (294), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2023-12-15 21:16:58,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2023-12-15 21:16:58,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:16:58,303 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:16:58,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:16:58,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:16:58,307 INFO L85 PathProgramCache]: Analyzing trace with hash 87983472, now seen corresponding path program 1 times [2023-12-15 21:16:58,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:16:58,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265173443] [2023-12-15 21:16:58,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:58,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:16:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:16:58,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:16:58,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265173443] [2023-12-15 21:16:58,648 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:16:58,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378926522] [2023-12-15 21:16:58,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:58,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:16:58,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:16:58,661 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:16:58,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:16:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:16:59,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 1244 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:16:59,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:16:59,096 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2023-12-15 21:16:59,096 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:16:59,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378926522] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:16:59,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:16:59,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:16:59,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237680840] [2023-12-15 21:16:59,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:16:59,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:16:59,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:16:59,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:16:59,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:16:59,130 INFO L87 Difference]: Start difference. First operand has 267 states, 187 states have (on average 1.572192513368984) internal successors, (294), 188 states have internal predecessors, (294), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) Second operand has 2 states, 2 states have (on average 65.0) internal successors, (130), 2 states have internal predecessors, (130), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) [2023-12-15 21:16:59,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:16:59,185 INFO L93 Difference]: Finished difference Result 531 states and 971 transitions. [2023-12-15 21:16:59,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:16:59,188 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 65.0) internal successors, (130), 2 states have internal predecessors, (130), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) Word has length 510 [2023-12-15 21:16:59,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:16:59,195 INFO L225 Difference]: With dead ends: 531 [2023-12-15 21:16:59,196 INFO L226 Difference]: Without dead ends: 265 [2023-12-15 21:16:59,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 509 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:16:59,202 INFO L413 NwaCegarLoop]: 439 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, 439 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:16:59,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 439 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:16:59,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-12-15 21:16:59,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2023-12-15 21:16:59,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 186 states have (on average 1.5483870967741935) internal successors, (288), 186 states have internal predecessors, (288), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2023-12-15 21:16:59,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 442 transitions. [2023-12-15 21:16:59,258 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 442 transitions. Word has length 510 [2023-12-15 21:16:59,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:16:59,259 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 442 transitions. [2023-12-15 21:16:59,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 65.0) internal successors, (130), 2 states have internal predecessors, (130), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) [2023-12-15 21:16:59,259 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 442 transitions. [2023-12-15 21:16:59,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2023-12-15 21:16:59,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:16:59,266 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:16:59,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 21:16:59,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 21:16:59,474 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:16:59,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:16:59,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1605337554, now seen corresponding path program 1 times [2023-12-15 21:16:59,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:16:59,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770351786] [2023-12-15 21:16:59,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:59,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:16:59,608 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:16:59,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [953334681] [2023-12-15 21:16:59,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:16:59,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:16:59,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:16:59,622 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:16:59,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:17:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:00,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 1244 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:17:00,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:00,611 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-12-15 21:17:00,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:00,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:00,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770351786] [2023-12-15 21:17:00,612 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:00,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953334681] [2023-12-15 21:17:00,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953334681] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:00,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:00,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:17:00,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136107901] [2023-12-15 21:17:00,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:00,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:17:00,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:00,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:17:00,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:17:00,618 INFO L87 Difference]: Start difference. First operand 265 states and 442 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:00,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:00,732 INFO L93 Difference]: Finished difference Result 793 states and 1324 transitions. [2023-12-15 21:17:00,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:17:00,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 510 [2023-12-15 21:17:00,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:00,737 INFO L225 Difference]: With dead ends: 793 [2023-12-15 21:17:00,737 INFO L226 Difference]: Without dead ends: 529 [2023-12-15 21:17:00,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:17:00,739 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 213 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:00,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1409 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:17:00,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2023-12-15 21:17:00,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 527. [2023-12-15 21:17:00,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 370 states have (on average 1.5486486486486486) internal successors, (573), 370 states have internal predecessors, (573), 154 states have call successors, (154), 2 states have call predecessors, (154), 2 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-15 21:17:00,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 881 transitions. [2023-12-15 21:17:00,782 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 881 transitions. Word has length 510 [2023-12-15 21:17:00,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:00,783 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 881 transitions. [2023-12-15 21:17:00,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:00,783 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 881 transitions. [2023-12-15 21:17:00,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2023-12-15 21:17:00,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:00,789 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:00,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:00,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 21:17:00,997 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:00,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:00,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1302844332, now seen corresponding path program 1 times [2023-12-15 21:17:00,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:00,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910412998] [2023-12-15 21:17:00,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:00,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:01,074 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:01,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [730107148] [2023-12-15 21:17:01,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:01,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:01,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:01,094 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:01,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:17:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:01,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:17:01,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:01,458 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-12-15 21:17:01,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:01,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:01,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910412998] [2023-12-15 21:17:01,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:01,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730107148] [2023-12-15 21:17:01,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730107148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:01,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:01,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:17:01,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210503558] [2023-12-15 21:17:01,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:01,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:17:01,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:01,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:17:01,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:17:01,461 INFO L87 Difference]: Start difference. First operand 527 states and 881 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:01,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:01,543 INFO L93 Difference]: Finished difference Result 1563 states and 2613 transitions. [2023-12-15 21:17:01,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:17:01,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 510 [2023-12-15 21:17:01,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:01,548 INFO L225 Difference]: With dead ends: 1563 [2023-12-15 21:17:01,548 INFO L226 Difference]: Without dead ends: 1037 [2023-12-15 21:17:01,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:17:01,550 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 424 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:01,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 1121 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:17:01,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2023-12-15 21:17:01,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1035. [2023-12-15 21:17:01,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 722 states have (on average 1.5373961218836565) internal successors, (1110), 722 states have internal predecessors, (1110), 308 states have call successors, (308), 4 states have call predecessors, (308), 4 states have return successors, (308), 308 states have call predecessors, (308), 308 states have call successors, (308) [2023-12-15 21:17:01,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1726 transitions. [2023-12-15 21:17:01,671 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1726 transitions. Word has length 510 [2023-12-15 21:17:01,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:01,681 INFO L495 AbstractCegarLoop]: Abstraction has 1035 states and 1726 transitions. [2023-12-15 21:17:01,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:01,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1726 transitions. [2023-12-15 21:17:01,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2023-12-15 21:17:01,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:01,687 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:01,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-15 21:17:01,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:01,907 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:01,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:01,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1230457774, now seen corresponding path program 1 times [2023-12-15 21:17:01,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:01,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127437597] [2023-12-15 21:17:01,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:01,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:01,965 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:01,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644918598] [2023-12-15 21:17:01,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:01,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:01,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:01,982 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:01,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:17:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:02,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 1247 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:17:02,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:02,419 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-12-15 21:17:02,419 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:02,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:02,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127437597] [2023-12-15 21:17:02,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:02,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644918598] [2023-12-15 21:17:02,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644918598] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:02,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:02,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:17:02,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039982968] [2023-12-15 21:17:02,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:02,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:17:02,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:02,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:17:02,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:17:02,422 INFO L87 Difference]: Start difference. First operand 1035 states and 1726 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:02,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:02,523 INFO L93 Difference]: Finished difference Result 3087 states and 5144 transitions. [2023-12-15 21:17:02,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:17:02,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 510 [2023-12-15 21:17:02,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:02,532 INFO L225 Difference]: With dead ends: 3087 [2023-12-15 21:17:02,532 INFO L226 Difference]: Without dead ends: 2053 [2023-12-15 21:17:02,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:17:02,552 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 410 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:02,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 920 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:17:02,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2023-12-15 21:17:02,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 1159. [2023-12-15 21:17:02,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 846 states have (on average 1.5460992907801419) internal successors, (1308), 846 states have internal predecessors, (1308), 308 states have call successors, (308), 4 states have call predecessors, (308), 4 states have return successors, (308), 308 states have call predecessors, (308), 308 states have call successors, (308) [2023-12-15 21:17:02,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1924 transitions. [2023-12-15 21:17:02,735 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1924 transitions. Word has length 510 [2023-12-15 21:17:02,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:02,752 INFO L495 AbstractCegarLoop]: Abstraction has 1159 states and 1924 transitions. [2023-12-15 21:17:02,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:02,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1924 transitions. [2023-12-15 21:17:02,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2023-12-15 21:17:02,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:02,756 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:02,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:02,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:02,964 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:02,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:02,965 INFO L85 PathProgramCache]: Analyzing trace with hash 2111553962, now seen corresponding path program 1 times [2023-12-15 21:17:02,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:02,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355889961] [2023-12-15 21:17:02,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:02,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:03,045 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:03,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [279037008] [2023-12-15 21:17:03,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:03,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:03,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:03,047 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:03,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 21:17:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:03,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 1247 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:17:03,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:03,427 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-12-15 21:17:03,428 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:03,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:03,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355889961] [2023-12-15 21:17:03,428 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:03,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279037008] [2023-12-15 21:17:03,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279037008] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:03,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:03,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:17:03,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015785945] [2023-12-15 21:17:03,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:03,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:17:03,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:03,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:17:03,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:17:03,430 INFO L87 Difference]: Start difference. First operand 1159 states and 1924 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:03,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:03,532 INFO L93 Difference]: Finished difference Result 3211 states and 5330 transitions. [2023-12-15 21:17:03,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:17:03,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 510 [2023-12-15 21:17:03,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:03,539 INFO L225 Difference]: With dead ends: 3211 [2023-12-15 21:17:03,539 INFO L226 Difference]: Without dead ends: 2053 [2023-12-15 21:17:03,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:17:03,542 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 384 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:03,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 1139 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:17:03,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2023-12-15 21:17:03,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 1311. [2023-12-15 21:17:03,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1311 states, 998 states have (on average 1.565130260521042) internal successors, (1562), 998 states have internal predecessors, (1562), 308 states have call successors, (308), 4 states have call predecessors, (308), 4 states have return successors, (308), 308 states have call predecessors, (308), 308 states have call successors, (308) [2023-12-15 21:17:03,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 2178 transitions. [2023-12-15 21:17:03,625 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 2178 transitions. Word has length 510 [2023-12-15 21:17:03,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:03,626 INFO L495 AbstractCegarLoop]: Abstraction has 1311 states and 2178 transitions. [2023-12-15 21:17:03,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:03,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 2178 transitions. [2023-12-15 21:17:03,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2023-12-15 21:17:03,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:03,630 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:03,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:03,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:03,844 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:03,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:03,845 INFO L85 PathProgramCache]: Analyzing trace with hash 263823530, now seen corresponding path program 1 times [2023-12-15 21:17:03,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:03,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709130607] [2023-12-15 21:17:03,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:03,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:03,894 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:03,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1058334280] [2023-12-15 21:17:03,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:03,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:03,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:03,896 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:03,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 21:17:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:04,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 1247 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 21:17:04,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:04,777 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-12-15 21:17:04,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:04,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:04,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709130607] [2023-12-15 21:17:04,778 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:04,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058334280] [2023-12-15 21:17:04,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058334280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:04,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:04,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:17:04,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916215076] [2023-12-15 21:17:04,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:04,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:17:04,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:04,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:17:04,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:17:04,782 INFO L87 Difference]: Start difference. First operand 1311 states and 2178 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:05,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:05,518 INFO L93 Difference]: Finished difference Result 5019 states and 8411 transitions. [2023-12-15 21:17:05,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:17:05,520 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 510 [2023-12-15 21:17:05,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:05,548 INFO L225 Difference]: With dead ends: 5019 [2023-12-15 21:17:05,548 INFO L226 Difference]: Without dead ends: 3709 [2023-12-15 21:17:05,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:17:05,554 INFO L413 NwaCegarLoop]: 791 mSDtfsCounter, 1169 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 2056 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:05,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 2056 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 21:17:05,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3709 states. [2023-12-15 21:17:05,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3709 to 2119. [2023-12-15 21:17:05,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2119 states, 1650 states have (on average 1.5563636363636364) internal successors, (2568), 1650 states have internal predecessors, (2568), 462 states have call successors, (462), 6 states have call predecessors, (462), 6 states have return successors, (462), 462 states have call predecessors, (462), 462 states have call successors, (462) [2023-12-15 21:17:05,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2119 states to 2119 states and 3492 transitions. [2023-12-15 21:17:05,761 INFO L78 Accepts]: Start accepts. Automaton has 2119 states and 3492 transitions. Word has length 510 [2023-12-15 21:17:05,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:05,761 INFO L495 AbstractCegarLoop]: Abstraction has 2119 states and 3492 transitions. [2023-12-15 21:17:05,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:05,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2119 states and 3492 transitions. [2023-12-15 21:17:05,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2023-12-15 21:17:05,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:05,765 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:05,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:05,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:05,975 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:05,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:05,976 INFO L85 PathProgramCache]: Analyzing trace with hash -2001184468, now seen corresponding path program 1 times [2023-12-15 21:17:05,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:05,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478623489] [2023-12-15 21:17:05,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:05,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:06,015 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:06,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1675366408] [2023-12-15 21:17:06,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:06,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:06,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:06,017 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:06,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 21:17:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:06,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 1244 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:17:06,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:06,424 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-12-15 21:17:06,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:06,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:06,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478623489] [2023-12-15 21:17:06,425 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:06,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675366408] [2023-12-15 21:17:06,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675366408] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:06,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:06,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:17:06,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699548755] [2023-12-15 21:17:06,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:06,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:17:06,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:06,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:17:06,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:17:06,427 INFO L87 Difference]: Start difference. First operand 2119 states and 3492 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, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:06,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:06,602 INFO L93 Difference]: Finished difference Result 5741 states and 9466 transitions. [2023-12-15 21:17:06,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:17:06,603 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, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 510 [2023-12-15 21:17:06,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:06,615 INFO L225 Difference]: With dead ends: 5741 [2023-12-15 21:17:06,616 INFO L226 Difference]: Without dead ends: 3623 [2023-12-15 21:17:06,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:17:06,622 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 307 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:06,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1622 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:17:06,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2023-12-15 21:17:06,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 3615. [2023-12-15 21:17:06,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3615 states, 2918 states have (on average 1.5681973954763537) internal successors, (4576), 2924 states have internal predecessors, (4576), 684 states have call successors, (684), 12 states have call predecessors, (684), 12 states have return successors, (684), 678 states have call predecessors, (684), 684 states have call successors, (684) [2023-12-15 21:17:06,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3615 states to 3615 states and 5944 transitions. [2023-12-15 21:17:06,817 INFO L78 Accepts]: Start accepts. Automaton has 3615 states and 5944 transitions. Word has length 510 [2023-12-15 21:17:06,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:06,817 INFO L495 AbstractCegarLoop]: Abstraction has 3615 states and 5944 transitions. [2023-12-15 21:17:06,817 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, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:06,818 INFO L276 IsEmpty]: Start isEmpty. Operand 3615 states and 5944 transitions. [2023-12-15 21:17:06,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2023-12-15 21:17:06,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:06,823 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:06,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-15 21:17:07,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:07,035 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:07,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:07,035 INFO L85 PathProgramCache]: Analyzing trace with hash -740267218, now seen corresponding path program 1 times [2023-12-15 21:17:07,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:07,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759174380] [2023-12-15 21:17:07,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:07,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:07,085 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:07,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1273772146] [2023-12-15 21:17:07,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:07,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:07,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:07,086 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:07,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 21:17:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:07,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:17:07,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:07,943 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-12-15 21:17:07,943 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:07,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:07,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759174380] [2023-12-15 21:17:07,944 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:07,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273772146] [2023-12-15 21:17:07,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273772146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:07,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:07,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:17:07,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954320556] [2023-12-15 21:17:07,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:07,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:17:07,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:07,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:17:07,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:17:07,945 INFO L87 Difference]: Start difference. First operand 3615 states and 5944 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:08,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:08,181 INFO L93 Difference]: Finished difference Result 10193 states and 16764 transitions. [2023-12-15 21:17:08,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:17:08,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 510 [2023-12-15 21:17:08,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:08,208 INFO L225 Difference]: With dead ends: 10193 [2023-12-15 21:17:08,208 INFO L226 Difference]: Without dead ends: 6579 [2023-12-15 21:17:08,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:17:08,216 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 310 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:08,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 1549 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:17:08,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6579 states. [2023-12-15 21:17:08,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6579 to 6577. [2023-12-15 21:17:08,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6577 states, 5184 states have (on average 1.5513117283950617) internal successors, (8042), 5196 states have internal predecessors, (8042), 1368 states have call successors, (1368), 24 states have call predecessors, (1368), 24 states have return successors, (1368), 1356 states have call predecessors, (1368), 1368 states have call successors, (1368) [2023-12-15 21:17:08,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6577 states to 6577 states and 10778 transitions. [2023-12-15 21:17:08,582 INFO L78 Accepts]: Start accepts. Automaton has 6577 states and 10778 transitions. Word has length 510 [2023-12-15 21:17:08,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:08,582 INFO L495 AbstractCegarLoop]: Abstraction has 6577 states and 10778 transitions. [2023-12-15 21:17:08,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:08,583 INFO L276 IsEmpty]: Start isEmpty. Operand 6577 states and 10778 transitions. [2023-12-15 21:17:08,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2023-12-15 21:17:08,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:08,589 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:08,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-15 21:17:08,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 21:17:08,796 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:08,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:08,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1936836862, now seen corresponding path program 1 times [2023-12-15 21:17:08,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:08,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326931174] [2023-12-15 21:17:08,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:08,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:08,847 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:08,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [968307268] [2023-12-15 21:17:08,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:08,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:08,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:08,849 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:08,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 21:17:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:09,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:17:09,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:09,222 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-12-15 21:17:09,223 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:09,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:09,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326931174] [2023-12-15 21:17:09,223 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:09,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968307268] [2023-12-15 21:17:09,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968307268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:09,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:09,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:17:09,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875527521] [2023-12-15 21:17:09,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:09,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:17:09,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:09,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:17:09,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:17:09,241 INFO L87 Difference]: Start difference. First operand 6577 states and 10778 transitions. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:10,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:10,263 INFO L93 Difference]: Finished difference Result 25047 states and 40882 transitions. [2023-12-15 21:17:10,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:17:10,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 511 [2023-12-15 21:17:10,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:10,322 INFO L225 Difference]: With dead ends: 25047 [2023-12-15 21:17:10,322 INFO L226 Difference]: Without dead ends: 18471 [2023-12-15 21:17:10,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:17:10,339 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 1235 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:10,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 1764 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 21:17:10,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18471 states. [2023-12-15 21:17:11,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18471 to 14713. [2023-12-15 21:17:11,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14713 states, 11736 states have (on average 1.55027266530334) internal successors, (18194), 11796 states have internal predecessors, (18194), 2880 states have call successors, (2880), 96 states have call predecessors, (2880), 96 states have return successors, (2880), 2820 states have call predecessors, (2880), 2880 states have call successors, (2880) [2023-12-15 21:17:11,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14713 states to 14713 states and 23954 transitions. [2023-12-15 21:17:11,222 INFO L78 Accepts]: Start accepts. Automaton has 14713 states and 23954 transitions. Word has length 511 [2023-12-15 21:17:11,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:11,222 INFO L495 AbstractCegarLoop]: Abstraction has 14713 states and 23954 transitions. [2023-12-15 21:17:11,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:11,222 INFO L276 IsEmpty]: Start isEmpty. Operand 14713 states and 23954 transitions. [2023-12-15 21:17:11,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2023-12-15 21:17:11,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:11,234 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:11,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:11,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:11,442 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:11,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:11,442 INFO L85 PathProgramCache]: Analyzing trace with hash 250657024, now seen corresponding path program 1 times [2023-12-15 21:17:11,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:11,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190589943] [2023-12-15 21:17:11,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:11,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:11,500 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:11,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2048015363] [2023-12-15 21:17:11,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:11,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:11,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:11,537 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:11,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 21:17:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:11,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 1244 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:17:11,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:11,998 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-12-15 21:17:11,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:11,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:11,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190589943] [2023-12-15 21:17:11,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:11,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048015363] [2023-12-15 21:17:11,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048015363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:11,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:11,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:17:11,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316777835] [2023-12-15 21:17:11,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:12,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:17:12,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:12,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:17:12,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:17:12,001 INFO L87 Difference]: Start difference. First operand 14713 states and 23954 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:12,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:12,568 INFO L93 Difference]: Finished difference Result 32259 states and 52648 transitions. [2023-12-15 21:17:12,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:17:12,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 511 [2023-12-15 21:17:12,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:12,602 INFO L225 Difference]: With dead ends: 32259 [2023-12-15 21:17:12,603 INFO L226 Difference]: Without dead ends: 17547 [2023-12-15 21:17:12,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 509 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:17:12,625 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 169 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:12,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 977 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:17:12,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17547 states. [2023-12-15 21:17:13,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17547 to 15613. [2023-12-15 21:17:13,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15613 states, 12636 states have (on average 1.5533396644507755) internal successors, (19628), 12696 states have internal predecessors, (19628), 2880 states have call successors, (2880), 96 states have call predecessors, (2880), 96 states have return successors, (2880), 2820 states have call predecessors, (2880), 2880 states have call successors, (2880) [2023-12-15 21:17:13,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15613 states to 15613 states and 25388 transitions. [2023-12-15 21:17:13,516 INFO L78 Accepts]: Start accepts. Automaton has 15613 states and 25388 transitions. Word has length 511 [2023-12-15 21:17:13,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:13,517 INFO L495 AbstractCegarLoop]: Abstraction has 15613 states and 25388 transitions. [2023-12-15 21:17:13,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:13,517 INFO L276 IsEmpty]: Start isEmpty. Operand 15613 states and 25388 transitions. [2023-12-15 21:17:13,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2023-12-15 21:17:13,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:13,529 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:13,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-15 21:17:13,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 21:17:13,736 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:13,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:13,737 INFO L85 PathProgramCache]: Analyzing trace with hash 25794304, now seen corresponding path program 1 times [2023-12-15 21:17:13,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:13,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199021887] [2023-12-15 21:17:13,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:13,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:13,784 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:13,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1852552314] [2023-12-15 21:17:13,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:13,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:13,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:13,786 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:13,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 21:17:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:14,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 1244 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:17:14,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:14,216 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-12-15 21:17:14,216 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:14,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:14,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199021887] [2023-12-15 21:17:14,217 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:14,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852552314] [2023-12-15 21:17:14,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852552314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:14,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:14,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:17:14,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663993938] [2023-12-15 21:17:14,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:14,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:17:14,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:14,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:17:14,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:17:14,218 INFO L87 Difference]: Start difference. First operand 15613 states and 25388 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, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:15,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:15,331 INFO L93 Difference]: Finished difference Result 42041 states and 68176 transitions. [2023-12-15 21:17:15,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:17:15,332 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, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 511 [2023-12-15 21:17:15,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:15,397 INFO L225 Difference]: With dead ends: 42041 [2023-12-15 21:17:15,397 INFO L226 Difference]: Without dead ends: 26429 [2023-12-15 21:17:15,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:17:15,418 INFO L413 NwaCegarLoop]: 804 mSDtfsCounter, 434 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:15,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1708 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:17:15,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26429 states. [2023-12-15 21:17:16,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26429 to 23259. [2023-12-15 21:17:16,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23259 states, 18866 states have (on average 1.551150217322167) internal successors, (29264), 18938 states have internal predecessors, (29264), 4248 states have call successors, (4248), 144 states have call predecessors, (4248), 144 states have return successors, (4248), 4176 states have call predecessors, (4248), 4248 states have call successors, (4248) [2023-12-15 21:17:16,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23259 states to 23259 states and 37760 transitions. [2023-12-15 21:17:16,748 INFO L78 Accepts]: Start accepts. Automaton has 23259 states and 37760 transitions. Word has length 511 [2023-12-15 21:17:16,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:16,749 INFO L495 AbstractCegarLoop]: Abstraction has 23259 states and 37760 transitions. [2023-12-15 21:17:16,749 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, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:16,749 INFO L276 IsEmpty]: Start isEmpty. Operand 23259 states and 37760 transitions. [2023-12-15 21:17:16,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2023-12-15 21:17:16,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:16,764 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:16,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:16,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 21:17:16,971 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:16,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:16,972 INFO L85 PathProgramCache]: Analyzing trace with hash -941556350, now seen corresponding path program 1 times [2023-12-15 21:17:16,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:16,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66988469] [2023-12-15 21:17:16,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:16,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:17,022 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:17,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [831148958] [2023-12-15 21:17:17,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:17,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:17,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:17,024 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:17,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 21:17:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:17,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 1242 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 21:17:17,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:17,879 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-12-15 21:17:17,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:17,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:17,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66988469] [2023-12-15 21:17:17,880 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:17,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831148958] [2023-12-15 21:17:17,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831148958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:17,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:17,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:17:17,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574892661] [2023-12-15 21:17:17,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:17,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:17:17,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:17,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:17:17,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:17:17,882 INFO L87 Difference]: Start difference. First operand 23259 states and 37760 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 6 states have internal predecessors, (129), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:20,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:20,380 INFO L93 Difference]: Finished difference Result 64913 states and 105347 transitions. [2023-12-15 21:17:20,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 21:17:20,404 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 6 states have internal predecessors, (129), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 511 [2023-12-15 21:17:20,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:20,497 INFO L225 Difference]: With dead ends: 64913 [2023-12-15 21:17:20,498 INFO L226 Difference]: Without dead ends: 41655 [2023-12-15 21:17:20,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-15 21:17:20,536 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 2231 mSDsluCounter, 3519 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2231 SdHoareTripleChecker+Valid, 4129 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:20,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2231 Valid, 4129 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 21:17:20,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41655 states. [2023-12-15 21:17:21,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41655 to 15975. [2023-12-15 21:17:21,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15975 states, 13142 states have (on average 1.551057677674631) internal successors, (20384), 13166 states have internal predecessors, (20384), 2736 states have call successors, (2736), 96 states have call predecessors, (2736), 96 states have return successors, (2736), 2712 states have call predecessors, (2736), 2736 states have call successors, (2736) [2023-12-15 21:17:21,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15975 states to 15975 states and 25856 transitions. [2023-12-15 21:17:21,874 INFO L78 Accepts]: Start accepts. Automaton has 15975 states and 25856 transitions. Word has length 511 [2023-12-15 21:17:21,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:21,876 INFO L495 AbstractCegarLoop]: Abstraction has 15975 states and 25856 transitions. [2023-12-15 21:17:21,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 6 states have internal predecessors, (129), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:21,876 INFO L276 IsEmpty]: Start isEmpty. Operand 15975 states and 25856 transitions. [2023-12-15 21:17:21,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2023-12-15 21:17:21,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:21,885 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:21,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-15 21:17:22,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 21:17:22,093 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:22,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:22,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1905602327, now seen corresponding path program 1 times [2023-12-15 21:17:22,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:22,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566131277] [2023-12-15 21:17:22,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:22,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:22,134 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:22,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1808200123] [2023-12-15 21:17:22,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:22,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:22,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:22,135 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:22,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 21:17:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:22,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 1240 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:17:22,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:23,023 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 2022 proven. 207 refuted. 0 times theorem prover too weak. 9475 trivial. 0 not checked. [2023-12-15 21:17:23,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:17:23,351 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 21 proven. 207 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2023-12-15 21:17:23,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:23,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566131277] [2023-12-15 21:17:23,351 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:23,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808200123] [2023-12-15 21:17:23,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808200123] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:17:23,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:17:23,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:17:23,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032996143] [2023-12-15 21:17:23,352 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:17:23,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:17:23,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:23,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:17:23,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:17:23,354 INFO L87 Difference]: Start difference. First operand 15975 states and 25856 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, (146), 2 states have call predecessors, (146), 4 states have return successors, (147), 2 states have call predecessors, (147), 2 states have call successors, (147) [2023-12-15 21:17:23,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:23,901 INFO L93 Difference]: Finished difference Result 22375 states and 36063 transitions. [2023-12-15 21:17:23,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:17:23,903 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, (146), 2 states have call predecessors, (146), 4 states have return successors, (147), 2 states have call predecessors, (147), 2 states have call successors, (147) Word has length 512 [2023-12-15 21:17:23,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:23,918 INFO L225 Difference]: With dead ends: 22375 [2023-12-15 21:17:23,918 INFO L226 Difference]: Without dead ends: 6401 [2023-12-15 21:17:23,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1026 GetRequests, 1016 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:17:23,936 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 669 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:23,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 878 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:17:23,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6401 states. [2023-12-15 21:17:24,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6401 to 6305. [2023-12-15 21:17:24,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6305 states, 4864 states have (on average 1.511513157894737) internal successors, (7352), 4876 states have internal predecessors, (7352), 1368 states have call successors, (1368), 72 states have call predecessors, (1368), 72 states have return successors, (1368), 1356 states have call predecessors, (1368), 1368 states have call successors, (1368) [2023-12-15 21:17:24,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6305 states to 6305 states and 10088 transitions. [2023-12-15 21:17:24,299 INFO L78 Accepts]: Start accepts. Automaton has 6305 states and 10088 transitions. Word has length 512 [2023-12-15 21:17:24,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:24,299 INFO L495 AbstractCegarLoop]: Abstraction has 6305 states and 10088 transitions. [2023-12-15 21:17:24,299 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, (146), 2 states have call predecessors, (146), 4 states have return successors, (147), 2 states have call predecessors, (147), 2 states have call successors, (147) [2023-12-15 21:17:24,299 INFO L276 IsEmpty]: Start isEmpty. Operand 6305 states and 10088 transitions. [2023-12-15 21:17:24,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2023-12-15 21:17:24,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:24,304 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:24,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:24,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 21:17:24,512 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:24,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:24,513 INFO L85 PathProgramCache]: Analyzing trace with hash 776238556, now seen corresponding path program 1 times [2023-12-15 21:17:24,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:24,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359713853] [2023-12-15 21:17:24,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:24,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:24,553 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:24,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1983589617] [2023-12-15 21:17:24,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:24,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:24,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:24,554 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:24,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 21:17:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:24,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:17:24,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:25,016 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-12-15 21:17:25,016 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:25,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:25,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359713853] [2023-12-15 21:17:25,017 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:25,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983589617] [2023-12-15 21:17:25,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983589617] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:25,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:25,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:17:25,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829535766] [2023-12-15 21:17:25,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:25,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:17:25,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:25,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:17:25,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:17:25,019 INFO L87 Difference]: Start difference. First operand 6305 states and 10088 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:26,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:26,051 INFO L93 Difference]: Finished difference Result 16401 states and 26038 transitions. [2023-12-15 21:17:26,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:17:26,052 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 512 [2023-12-15 21:17:26,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:26,070 INFO L225 Difference]: With dead ends: 16401 [2023-12-15 21:17:26,070 INFO L226 Difference]: Without dead ends: 10097 [2023-12-15 21:17:26,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 509 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:17:26,081 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 1005 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:26,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 1450 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 21:17:26,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10097 states. [2023-12-15 21:17:26,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10097 to 6732. [2023-12-15 21:17:26,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6732 states, 5187 states have (on average 1.4933487565066512) internal successors, (7746), 5199 states have internal predecessors, (7746), 1445 states have call successors, (1445), 99 states have call predecessors, (1445), 99 states have return successors, (1445), 1433 states have call predecessors, (1445), 1445 states have call successors, (1445) [2023-12-15 21:17:26,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6732 states to 6732 states and 10636 transitions. [2023-12-15 21:17:26,660 INFO L78 Accepts]: Start accepts. Automaton has 6732 states and 10636 transitions. Word has length 512 [2023-12-15 21:17:26,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:26,661 INFO L495 AbstractCegarLoop]: Abstraction has 6732 states and 10636 transitions. [2023-12-15 21:17:26,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:26,661 INFO L276 IsEmpty]: Start isEmpty. Operand 6732 states and 10636 transitions. [2023-12-15 21:17:26,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2023-12-15 21:17:26,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:26,669 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:26,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:26,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:26,878 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:26,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:26,879 INFO L85 PathProgramCache]: Analyzing trace with hash 978062490, now seen corresponding path program 1 times [2023-12-15 21:17:26,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:26,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436579918] [2023-12-15 21:17:26,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:26,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:26,924 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:26,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1303685334] [2023-12-15 21:17:26,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:26,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:26,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:26,926 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:26,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 21:17:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:27,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 1245 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 21:17:27,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:27,431 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-12-15 21:17:27,431 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:27,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:27,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436579918] [2023-12-15 21:17:27,431 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:27,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303685334] [2023-12-15 21:17:27,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303685334] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:27,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:27,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:17:27,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480447034] [2023-12-15 21:17:27,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:27,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:17:27,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:27,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:17:27,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:17:27,433 INFO L87 Difference]: Start difference. First operand 6732 states and 10636 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:27,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:27,885 INFO L93 Difference]: Finished difference Result 8919 states and 14123 transitions. [2023-12-15 21:17:27,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:17:27,892 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 512 [2023-12-15 21:17:27,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:27,902 INFO L225 Difference]: With dead ends: 8919 [2023-12-15 21:17:27,902 INFO L226 Difference]: Without dead ends: 4505 [2023-12-15 21:17:27,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 509 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:17:27,910 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 1004 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:27,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 1263 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:17:27,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4505 states. [2023-12-15 21:17:28,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4505 to 4502. [2023-12-15 21:17:28,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4502 states, 3445 states have (on average 1.4804063860667633) internal successors, (5100), 3453 states have internal predecessors, (5100), 989 states have call successors, (989), 67 states have call predecessors, (989), 67 states have return successors, (989), 981 states have call predecessors, (989), 989 states have call successors, (989) [2023-12-15 21:17:28,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4502 states to 4502 states and 7078 transitions. [2023-12-15 21:17:28,124 INFO L78 Accepts]: Start accepts. Automaton has 4502 states and 7078 transitions. Word has length 512 [2023-12-15 21:17:28,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:28,125 INFO L495 AbstractCegarLoop]: Abstraction has 4502 states and 7078 transitions. [2023-12-15 21:17:28,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:28,125 INFO L276 IsEmpty]: Start isEmpty. Operand 4502 states and 7078 transitions. [2023-12-15 21:17:28,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2023-12-15 21:17:28,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:28,129 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:28,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-15 21:17:28,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 21:17:28,337 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:28,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:28,338 INFO L85 PathProgramCache]: Analyzing trace with hash 412819548, now seen corresponding path program 1 times [2023-12-15 21:17:28,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:28,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145557497] [2023-12-15 21:17:28,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:28,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:28,379 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:28,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [163523395] [2023-12-15 21:17:28,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:28,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:28,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:28,398 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:28,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 21:17:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:28,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 1242 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 21:17:28,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:30,762 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 76 proven. 228 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-15 21:17:30,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:17:36,278 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-12-15 21:17:36,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:36,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145557497] [2023-12-15 21:17:36,279 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:36,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163523395] [2023-12-15 21:17:36,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163523395] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:17:36,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:17:36,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2023-12-15 21:17:36,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096447648] [2023-12-15 21:17:36,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:36,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:17:36,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:36,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:17:36,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:17:36,281 INFO L87 Difference]: Start difference. First operand 4502 states and 7078 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:37,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:37,231 INFO L93 Difference]: Finished difference Result 10742 states and 17036 transitions. [2023-12-15 21:17:37,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:17:37,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 512 [2023-12-15 21:17:37,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:37,245 INFO L225 Difference]: With dead ends: 10742 [2023-12-15 21:17:37,246 INFO L226 Difference]: Without dead ends: 6384 [2023-12-15 21:17:37,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1025 GetRequests, 1013 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-12-15 21:17:37,254 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 651 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:37,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 1010 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 21:17:37,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6384 states. [2023-12-15 21:17:37,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6384 to 6066. [2023-12-15 21:17:37,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6066 states, 5009 states have (on average 1.5444200439209423) internal successors, (7736), 5017 states have internal predecessors, (7736), 989 states have call successors, (989), 67 states have call predecessors, (989), 67 states have return successors, (989), 981 states have call predecessors, (989), 989 states have call successors, (989) [2023-12-15 21:17:37,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6066 states to 6066 states and 9714 transitions. [2023-12-15 21:17:37,557 INFO L78 Accepts]: Start accepts. Automaton has 6066 states and 9714 transitions. Word has length 512 [2023-12-15 21:17:37,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:37,557 INFO L495 AbstractCegarLoop]: Abstraction has 6066 states and 9714 transitions. [2023-12-15 21:17:37,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:37,558 INFO L276 IsEmpty]: Start isEmpty. Operand 6066 states and 9714 transitions. [2023-12-15 21:17:37,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2023-12-15 21:17:37,563 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:37,563 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:37,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:37,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 21:17:37,772 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:37,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:37,772 INFO L85 PathProgramCache]: Analyzing trace with hash -480666790, now seen corresponding path program 1 times [2023-12-15 21:17:37,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:37,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061276517] [2023-12-15 21:17:37,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:37,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:37,816 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:37,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [468238943] [2023-12-15 21:17:37,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:37,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:37,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:37,817 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:37,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-15 21:17:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:38,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 21:17:38,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:39,118 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-12-15 21:17:39,118 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:39,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:39,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061276517] [2023-12-15 21:17:39,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:39,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468238943] [2023-12-15 21:17:39,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468238943] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:39,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:39,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:17:39,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974260249] [2023-12-15 21:17:39,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:39,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:17:39,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:39,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:17:39,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:17:39,120 INFO L87 Difference]: Start difference. First operand 6066 states and 9714 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:40,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:40,100 INFO L93 Difference]: Finished difference Result 20558 states and 33075 transitions. [2023-12-15 21:17:40,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 21:17:40,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 512 [2023-12-15 21:17:40,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:40,125 INFO L225 Difference]: With dead ends: 20558 [2023-12-15 21:17:40,125 INFO L226 Difference]: Without dead ends: 14632 [2023-12-15 21:17:40,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:17:40,133 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 920 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:40,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 1740 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 21:17:40,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14632 states. [2023-12-15 21:17:40,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14632 to 6065. [2023-12-15 21:17:40,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6065 states, 5008 states have (on average 1.5393370607028753) internal successors, (7709), 5016 states have internal predecessors, (7709), 989 states have call successors, (989), 67 states have call predecessors, (989), 67 states have return successors, (989), 981 states have call predecessors, (989), 989 states have call successors, (989) [2023-12-15 21:17:40,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6065 states to 6065 states and 9687 transitions. [2023-12-15 21:17:40,555 INFO L78 Accepts]: Start accepts. Automaton has 6065 states and 9687 transitions. Word has length 512 [2023-12-15 21:17:40,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:40,556 INFO L495 AbstractCegarLoop]: Abstraction has 6065 states and 9687 transitions. [2023-12-15 21:17:40,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-15 21:17:40,556 INFO L276 IsEmpty]: Start isEmpty. Operand 6065 states and 9687 transitions. [2023-12-15 21:17:40,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2023-12-15 21:17:40,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:40,562 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:40,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-15 21:17:40,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-15 21:17:40,771 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:40,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:40,772 INFO L85 PathProgramCache]: Analyzing trace with hash 465783709, now seen corresponding path program 1 times [2023-12-15 21:17:40,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:40,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734292390] [2023-12-15 21:17:40,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:40,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:40,807 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:40,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1715736784] [2023-12-15 21:17:40,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:40,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:40,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:40,809 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:40,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-15 21:17:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:41,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 21:17:41,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:42,288 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 672 proven. 222 refuted. 0 times theorem prover too weak. 10810 trivial. 0 not checked. [2023-12-15 21:17:42,289 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:17:42,622 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 6 proven. 222 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2023-12-15 21:17:42,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:42,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734292390] [2023-12-15 21:17:42,622 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:42,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715736784] [2023-12-15 21:17:42,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715736784] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:17:42,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:17:42,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2023-12-15 21:17:42,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239534211] [2023-12-15 21:17:42,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:17:42,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 21:17:42,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:42,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 21:17:42,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:17:42,625 INFO L87 Difference]: Start difference. First operand 6065 states and 9687 transitions. Second operand has 12 states, 12 states have (on average 17.0) internal successors, (204), 12 states have internal predecessors, (204), 4 states have call successors, (154), 3 states have call predecessors, (154), 5 states have return successors, (154), 4 states have call predecessors, (154), 4 states have call successors, (154) [2023-12-15 21:17:44,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:44,223 INFO L93 Difference]: Finished difference Result 25899 states and 41578 transitions. [2023-12-15 21:17:44,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-15 21:17:44,224 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 17.0) internal successors, (204), 12 states have internal predecessors, (204), 4 states have call successors, (154), 3 states have call predecessors, (154), 5 states have return successors, (154), 4 states have call predecessors, (154), 4 states have call successors, (154) Word has length 513 [2023-12-15 21:17:44,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:44,254 INFO L225 Difference]: With dead ends: 25899 [2023-12-15 21:17:44,254 INFO L226 Difference]: Without dead ends: 19977 [2023-12-15 21:17:44,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1038 GetRequests, 1015 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2023-12-15 21:17:44,268 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 1860 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1863 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:44,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1863 Valid, 1914 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 21:17:44,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19977 states. [2023-12-15 21:17:44,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19977 to 16181. [2023-12-15 21:17:44,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16181 states, 14083 states have (on average 1.5633032734502592) internal successors, (22016), 14115 states have internal predecessors, (22016), 1933 states have call successors, (1933), 164 states have call predecessors, (1933), 164 states have return successors, (1933), 1901 states have call predecessors, (1933), 1933 states have call successors, (1933) [2023-12-15 21:17:45,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16181 states to 16181 states and 25882 transitions. [2023-12-15 21:17:45,013 INFO L78 Accepts]: Start accepts. Automaton has 16181 states and 25882 transitions. Word has length 513 [2023-12-15 21:17:45,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:45,013 INFO L495 AbstractCegarLoop]: Abstraction has 16181 states and 25882 transitions. [2023-12-15 21:17:45,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.0) internal successors, (204), 12 states have internal predecessors, (204), 4 states have call successors, (154), 3 states have call predecessors, (154), 5 states have return successors, (154), 4 states have call predecessors, (154), 4 states have call successors, (154) [2023-12-15 21:17:45,014 INFO L276 IsEmpty]: Start isEmpty. Operand 16181 states and 25882 transitions. [2023-12-15 21:17:45,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2023-12-15 21:17:45,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:45,022 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:45,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:45,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-15 21:17:45,228 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:45,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:45,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1419723867, now seen corresponding path program 1 times [2023-12-15 21:17:45,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:45,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766902789] [2023-12-15 21:17:45,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:45,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:45,266 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:45,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1719459913] [2023-12-15 21:17:45,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:45,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:45,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:45,268 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:45,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-15 21:17:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:45,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-15 21:17:45,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:46,788 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 3598 proven. 408 refuted. 0 times theorem prover too weak. 7698 trivial. 0 not checked. [2023-12-15 21:17:46,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:17:47,269 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 42 proven. 411 refuted. 0 times theorem prover too weak. 11251 trivial. 0 not checked. [2023-12-15 21:17:47,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:47,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766902789] [2023-12-15 21:17:47,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:47,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719459913] [2023-12-15 21:17:47,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719459913] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:17:47,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:17:47,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-15 21:17:47,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930191147] [2023-12-15 21:17:47,269 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:17:47,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-15 21:17:47,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:47,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-15 21:17:47,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2023-12-15 21:17:47,272 INFO L87 Difference]: Start difference. First operand 16181 states and 25882 transitions. Second operand has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 5 states have call successors, (153), 3 states have call predecessors, (153), 7 states have return successors, (154), 4 states have call predecessors, (154), 5 states have call successors, (154) [2023-12-15 21:17:48,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:48,498 INFO L93 Difference]: Finished difference Result 32805 states and 52047 transitions. [2023-12-15 21:17:48,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 21:17:48,499 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 5 states have call successors, (153), 3 states have call predecessors, (153), 7 states have return successors, (154), 4 states have call predecessors, (154), 5 states have call successors, (154) Word has length 513 [2023-12-15 21:17:48,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:48,529 INFO L225 Difference]: With dead ends: 32805 [2023-12-15 21:17:48,529 INFO L226 Difference]: Without dead ends: 16771 [2023-12-15 21:17:48,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1032 GetRequests, 1010 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=178, Invalid=374, Unknown=0, NotChecked=0, Total=552 [2023-12-15 21:17:48,550 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 906 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:48,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 1136 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 21:17:48,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16771 states. [2023-12-15 21:17:49,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16771 to 16509. [2023-12-15 21:17:49,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16509 states, 14329 states have (on average 1.5301835438620979) internal successors, (21926), 14361 states have internal predecessors, (21926), 1933 states have call successors, (1933), 246 states have call predecessors, (1933), 246 states have return successors, (1933), 1901 states have call predecessors, (1933), 1933 states have call successors, (1933) [2023-12-15 21:17:49,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16509 states to 16509 states and 25792 transitions. [2023-12-15 21:17:49,508 INFO L78 Accepts]: Start accepts. Automaton has 16509 states and 25792 transitions. Word has length 513 [2023-12-15 21:17:49,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:49,509 INFO L495 AbstractCegarLoop]: Abstraction has 16509 states and 25792 transitions. [2023-12-15 21:17:49,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 5 states have call successors, (153), 3 states have call predecessors, (153), 7 states have return successors, (154), 4 states have call predecessors, (154), 5 states have call successors, (154) [2023-12-15 21:17:49,509 INFO L276 IsEmpty]: Start isEmpty. Operand 16509 states and 25792 transitions. [2023-12-15 21:17:49,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-12-15 21:17:49,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:49,517 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:49,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-15 21:17:49,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:49,726 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:49,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:49,726 INFO L85 PathProgramCache]: Analyzing trace with hash 493464251, now seen corresponding path program 1 times [2023-12-15 21:17:49,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:49,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975529201] [2023-12-15 21:17:49,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:49,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:49,762 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:49,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [670047075] [2023-12-15 21:17:49,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:49,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:49,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:49,777 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:17:49,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-15 21:17:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:50,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 1248 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-15 21:17:50,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:51,763 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 3576 proven. 186 refuted. 0 times theorem prover too weak. 7942 trivial. 0 not checked. [2023-12-15 21:17:51,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-15 21:17:54,253 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:17:54,258 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:17:54,504 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:17:54,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:54,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:54,705 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 515 with TraceHistMax 77,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ∧-8-2-2-1 context. [2023-12-15 21:17:54,708 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] [2023-12-15 21:17:54,710 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:17:54,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:17:54 BoogieIcfgContainer [2023-12-15 21:17:54,711 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:17:54,712 INFO L158 Benchmark]: Toolchain (without parser) took 58367.30ms. Allocated memory was 244.3MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 190.6MB in the beginning and 1.6GB in the end (delta: -1.4GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2023-12-15 21:17:54,712 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 185.6MB. Free memory was 136.8MB in the beginning and 136.6MB in the end (delta: 161.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:17:54,712 INFO L158 Benchmark]: CACSL2BoogieTranslator took 436.15ms. Allocated memory is still 244.3MB. Free memory was 190.6MB in the beginning and 150.8MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2023-12-15 21:17:54,712 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.47ms. Allocated memory is still 244.3MB. Free memory was 150.8MB in the beginning and 127.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-12-15 21:17:54,713 INFO L158 Benchmark]: Boogie Preprocessor took 181.58ms. Allocated memory is still 244.3MB. Free memory was 127.7MB in the beginning and 186.2MB in the end (delta: -58.5MB). Peak memory consumption was 72.1MB. Max. memory is 8.0GB. [2023-12-15 21:17:54,713 INFO L158 Benchmark]: RCFGBuilder took 1148.96ms. Allocated memory is still 244.3MB. Free memory was 186.2MB in the beginning and 153.8MB in the end (delta: 32.4MB). Peak memory consumption was 91.6MB. Max. memory is 8.0GB. [2023-12-15 21:17:54,713 INFO L158 Benchmark]: TraceAbstraction took 56509.64ms. Allocated memory was 244.3MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 153.3MB in the beginning and 1.6GB in the end (delta: -1.4GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2023-12-15 21:17:54,714 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 185.6MB. Free memory was 136.8MB in the beginning and 136.6MB in the end (delta: 161.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 436.15ms. Allocated memory is still 244.3MB. Free memory was 190.6MB in the beginning and 150.8MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 86.47ms. Allocated memory is still 244.3MB. Free memory was 150.8MB in the beginning and 127.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 181.58ms. Allocated memory is still 244.3MB. Free memory was 127.7MB in the beginning and 186.2MB in the end (delta: -58.5MB). Peak memory consumption was 72.1MB. Max. memory is 8.0GB. * RCFGBuilder took 1148.96ms. Allocated memory is still 244.3MB. Free memory was 186.2MB in the beginning and 153.8MB in the end (delta: 32.4MB). Peak memory consumption was 91.6MB. Max. memory is 8.0GB. * TraceAbstraction took 56509.64ms. Allocated memory was 244.3MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 153.3MB in the beginning and 1.6GB in the end (delta: -1.4GB). Peak memory consumption was 2.3GB. 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 515 with TraceHistMax 77,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ∧-8-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 267 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 56.5s, OverallIterations: 20, TraceHistogramMax: 77, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 14.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14311 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14301 mSDsluCounter, 28224 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17482 mSDsCounter, 1900 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5151 IncrementalHoareTripleChecker+Invalid, 7051 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1900 mSolverCounterUnsat, 10742 mSDtfsCounter, 5151 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11789 GetRequests, 11669 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23259occurred in iteration=11, InterpolantAutomatonStates: 127, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 9.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 54189 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.3s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 15.0s InterpolantComputationTime, 10220 NumberOfCodeBlocks, 10220 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 11737 ConstructedInterpolants, 0 QuantifiedInterpolants, 41361 SizeOfPredicates, 61 NumberOfNonLiveVariables, 23643 ConjunctsInSsa, 119 ConjunctsInUnsatCore, 23 InterpolantComputations, 16 PerfectInterpolantSequences, 267287/269192 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