/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-77.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:51:41,689 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:51:41,749 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:51:41,754 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:51:41,754 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:51:41,772 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:51:41,773 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:51:41,773 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:51:41,773 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:51:41,774 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:51:41,774 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:51:41,774 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:51:41,775 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:51:41,775 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:51:41,776 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:51:41,776 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:51:41,776 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:51:41,777 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:51:41,777 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:51:41,777 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:51:41,777 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:51:41,778 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:51:41,778 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:51:41,779 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:51:41,779 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:51:41,779 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:51:41,779 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:51:41,780 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:51:41,780 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:51:41,780 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:51:41,781 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:51:41,781 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:51:41,781 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:51:41,782 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:51:41,782 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:51:41,782 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:51:41,782 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:51:41,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:51:41,783 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:51:41,783 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:51:41,783 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:51:41,784 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:51:41,784 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:51:41,784 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:51:41,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:51:41,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:51:41,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:51:41,995 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:51:41,995 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:51:41,996 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-77.i [2023-12-15 19:51:43,084 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:51:43,331 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:51:43,331 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-77.i [2023-12-15 19:51:43,341 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2d080d36/6096a20488db4c3ea4f96eaf93141238/FLAG661d6d969 [2023-12-15 19:51:43,353 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2d080d36/6096a20488db4c3ea4f96eaf93141238 [2023-12-15 19:51:43,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:51:43,356 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:51:43,357 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:51:43,357 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:51:43,362 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:51:43,362 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:51:43" (1/1) ... [2023-12-15 19:51:43,363 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@286bbf30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:43, skipping insertion in model container [2023-12-15 19:51:43,364 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:51:43" (1/1) ... [2023-12-15 19:51:43,425 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:51:43,547 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-77.i[916,929] [2023-12-15 19:51:43,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:51:43,698 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:51:43,713 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-77.i[916,929] [2023-12-15 19:51:43,766 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:51:43,789 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:51:43,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:43 WrapperNode [2023-12-15 19:51:43,789 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:51:43,790 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:51:43,791 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:51:43,791 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:51:43,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:43" (1/1) ... [2023-12-15 19:51:43,811 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:43" (1/1) ... [2023-12-15 19:51:43,895 INFO L138 Inliner]: procedures = 26, calls = 80, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 467 [2023-12-15 19:51:43,895 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:51:43,896 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:51:43,896 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:51:43,896 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:51:43,906 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:43" (1/1) ... [2023-12-15 19:51:43,906 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:43" (1/1) ... [2023-12-15 19:51:43,922 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:43" (1/1) ... [2023-12-15 19:51:43,952 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 19:51:43,952 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:43" (1/1) ... [2023-12-15 19:51:43,952 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:43" (1/1) ... [2023-12-15 19:51:43,982 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:43" (1/1) ... [2023-12-15 19:51:43,986 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:43" (1/1) ... [2023-12-15 19:51:44,008 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:43" (1/1) ... [2023-12-15 19:51:44,016 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:43" (1/1) ... [2023-12-15 19:51:44,034 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:51:44,035 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:51:44,035 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:51:44,035 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:51:44,036 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:43" (1/1) ... [2023-12-15 19:51:44,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:51:44,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:44,066 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 19:51:44,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 19:51:44,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:51:44,099 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 19:51:44,099 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 19:51:44,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:51:44,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:51:44,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:51:44,203 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:51:44,205 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:51:44,895 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:51:44,926 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:51:44,926 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:51:44,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:51:44 BoogieIcfgContainer [2023-12-15 19:51:44,927 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:51:44,928 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:51:44,929 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:51:44,931 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:51:44,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:51:43" (1/3) ... [2023-12-15 19:51:44,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24c87f2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:51:44, skipping insertion in model container [2023-12-15 19:51:44,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:43" (2/3) ... [2023-12-15 19:51:44,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24c87f2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:51:44, skipping insertion in model container [2023-12-15 19:51:44,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:51:44" (3/3) ... [2023-12-15 19:51:44,934 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-77.i [2023-12-15 19:51:44,951 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:51:44,951 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:51:45,084 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:51:45,090 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;@6a458499, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:51:45,090 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:51:45,096 INFO L276 IsEmpty]: Start isEmpty. Operand has 193 states, 123 states have (on average 1.5934959349593496) internal successors, (196), 124 states have internal predecessors, (196), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-15 19:51:45,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2023-12-15 19:51:45,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:45,124 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:51:45,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:45,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:45,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1774858766, now seen corresponding path program 1 times [2023-12-15 19:51:45,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:45,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957296138] [2023-12-15 19:51:45,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:45,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:45,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:45,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957296138] [2023-12-15 19:51:45,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 19:51:45,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698275755] [2023-12-15 19:51:45,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:45,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:45,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:45,471 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:51:45,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:51:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:45,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 19:51:45,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:45,870 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2023-12-15 19:51:45,870 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:51:45,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698275755] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:51:45,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:51:45,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:51:45,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440115775] [2023-12-15 19:51:45,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:51:45,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:51:45,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:45,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:51:45,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:51:45,907 INFO L87 Difference]: Start difference. First operand has 193 states, 123 states have (on average 1.5934959349593496) internal successors, (196), 124 states have internal predecessors, (196), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Second operand has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2023-12-15 19:51:46,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:51:46,007 INFO L93 Difference]: Finished difference Result 383 states and 725 transitions. [2023-12-15 19:51:46,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:51:46,014 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) Word has length 416 [2023-12-15 19:51:46,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:51:46,022 INFO L225 Difference]: With dead ends: 383 [2023-12-15 19:51:46,022 INFO L226 Difference]: Without dead ends: 191 [2023-12-15 19:51:46,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:51:46,035 INFO L413 NwaCegarLoop]: 320 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, 320 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:51:46,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 320 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:51:46,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-12-15 19:51:46,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2023-12-15 19:51:46,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 122 states have (on average 1.5491803278688525) internal successors, (189), 122 states have internal predecessors, (189), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-15 19:51:46,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 323 transitions. [2023-12-15 19:51:46,115 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 323 transitions. Word has length 416 [2023-12-15 19:51:46,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:51:46,116 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 323 transitions. [2023-12-15 19:51:46,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2023-12-15 19:51:46,117 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 323 transitions. [2023-12-15 19:51:46,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2023-12-15 19:51:46,132 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:46,132 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:51:46,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 19:51:46,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 19:51:46,348 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:46,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:46,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1422469804, now seen corresponding path program 1 times [2023-12-15 19:51:46,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:46,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852409034] [2023-12-15 19:51:46,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:46,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:46,473 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:51:46,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752882970] [2023-12-15 19:51:46,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:46,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:46,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:46,486 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:51:46,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:51:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:46,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:51:46,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:46,851 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-15 19:51:46,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:51:46,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:46,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852409034] [2023-12-15 19:51:46,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:51:46,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752882970] [2023-12-15 19:51:46,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752882970] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:51:46,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:51:46,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:51:46,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135985825] [2023-12-15 19:51:46,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:51:46,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:51:46,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:46,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:51:46,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:51:46,856 INFO L87 Difference]: Start difference. First operand 191 states and 323 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-15 19:51:47,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:51:47,001 INFO L93 Difference]: Finished difference Result 506 states and 858 transitions. [2023-12-15 19:51:47,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:51:47,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 416 [2023-12-15 19:51:47,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:51:47,009 INFO L225 Difference]: With dead ends: 506 [2023-12-15 19:51:47,009 INFO L226 Difference]: Without dead ends: 316 [2023-12-15 19:51:47,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:51:47,019 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 213 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:51:47,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 668 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 19:51:47,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-12-15 19:51:47,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 313. [2023-12-15 19:51:47,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 210 states have (on average 1.5857142857142856) internal successors, (333), 211 states have internal predecessors, (333), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-15 19:51:47,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 533 transitions. [2023-12-15 19:51:47,074 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 533 transitions. Word has length 416 [2023-12-15 19:51:47,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:51:47,077 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 533 transitions. [2023-12-15 19:51:47,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-15 19:51:47,078 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 533 transitions. [2023-12-15 19:51:47,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2023-12-15 19:51:47,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:47,081 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:51:47,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 19:51:47,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 19:51:47,288 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:47,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:47,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1690246754, now seen corresponding path program 1 times [2023-12-15 19:51:47,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:47,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878779295] [2023-12-15 19:51:47,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:47,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:47,375 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:51:47,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [839159683] [2023-12-15 19:51:47,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:47,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:47,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:47,386 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:51:47,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 19:51:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:47,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:51:47,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:47,682 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-15 19:51:47,682 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:51:47,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:47,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878779295] [2023-12-15 19:51:47,683 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:51:47,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839159683] [2023-12-15 19:51:47,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839159683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:51:47,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:51:47,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:51:47,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216087603] [2023-12-15 19:51:47,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:51:47,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:51:47,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:47,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:51:47,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:51:47,688 INFO L87 Difference]: Start difference. First operand 313 states and 533 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-15 19:51:47,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:51:47,725 INFO L93 Difference]: Finished difference Result 623 states and 1061 transitions. [2023-12-15 19:51:47,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:51:47,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 416 [2023-12-15 19:51:47,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:51:47,731 INFO L225 Difference]: With dead ends: 623 [2023-12-15 19:51:47,732 INFO L226 Difference]: Without dead ends: 311 [2023-12-15 19:51:47,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:51:47,735 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 3 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:51:47,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 628 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:51:47,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-12-15 19:51:47,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2023-12-15 19:51:47,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 208 states have (on average 1.5721153846153846) internal successors, (327), 209 states have internal predecessors, (327), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-15 19:51:47,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 527 transitions. [2023-12-15 19:51:47,770 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 527 transitions. Word has length 416 [2023-12-15 19:51:47,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:51:47,776 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 527 transitions. [2023-12-15 19:51:47,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-15 19:51:47,777 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 527 transitions. [2023-12-15 19:51:47,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2023-12-15 19:51:47,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:47,782 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:51:47,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 19:51:47,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:47,989 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:47,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:47,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1682620258, now seen corresponding path program 1 times [2023-12-15 19:51:47,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:47,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061006013] [2023-12-15 19:51:47,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:47,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:48,042 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:51:48,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1312596492] [2023-12-15 19:51:48,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:48,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:48,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:48,044 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:51:48,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 19:51:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:48,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:51:48,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:48,351 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-15 19:51:48,352 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:51:48,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:48,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061006013] [2023-12-15 19:51:48,352 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:51:48,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312596492] [2023-12-15 19:51:48,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312596492] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:51:48,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:51:48,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:51:48,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055871502] [2023-12-15 19:51:48,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:51:48,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:51:48,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:48,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:51:48,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:51:48,355 INFO L87 Difference]: Start difference. First operand 311 states and 527 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-15 19:51:48,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:51:48,402 INFO L93 Difference]: Finished difference Result 862 states and 1462 transitions. [2023-12-15 19:51:48,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:51:48,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 416 [2023-12-15 19:51:48,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:51:48,406 INFO L225 Difference]: With dead ends: 862 [2023-12-15 19:51:48,406 INFO L226 Difference]: Without dead ends: 552 [2023-12-15 19:51:48,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:51:48,408 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 202 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:51:48,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 759 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:51:48,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2023-12-15 19:51:48,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 549. [2023-12-15 19:51:48,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 374 states have (on average 1.5775401069518717) internal successors, (590), 377 states have internal predecessors, (590), 170 states have call successors, (170), 4 states have call predecessors, (170), 4 states have return successors, (170), 167 states have call predecessors, (170), 170 states have call successors, (170) [2023-12-15 19:51:48,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 930 transitions. [2023-12-15 19:51:48,443 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 930 transitions. Word has length 416 [2023-12-15 19:51:48,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:51:48,444 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 930 transitions. [2023-12-15 19:51:48,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-15 19:51:48,444 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 930 transitions. [2023-12-15 19:51:48,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2023-12-15 19:51:48,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:48,447 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:51:48,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 19:51:48,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:48,659 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:48,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:48,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1023999136, now seen corresponding path program 1 times [2023-12-15 19:51:48,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:48,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909952236] [2023-12-15 19:51:48,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:48,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:48,710 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:51:48,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [272358217] [2023-12-15 19:51:48,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:48,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:48,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:48,712 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:51:48,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 19:51:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:48,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:51:48,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:48,985 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-15 19:51:48,985 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:51:48,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:48,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909952236] [2023-12-15 19:51:48,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:51:48,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272358217] [2023-12-15 19:51:48,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272358217] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:51:48,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:51:48,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:51:48,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841096327] [2023-12-15 19:51:48,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:51:48,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:51:48,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:48,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:51:48,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:51:48,993 INFO L87 Difference]: Start difference. First operand 549 states and 930 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-15 19:51:49,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:51:49,075 INFO L93 Difference]: Finished difference Result 1465 states and 2454 transitions. [2023-12-15 19:51:49,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:51:49,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 416 [2023-12-15 19:51:49,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:51:49,082 INFO L225 Difference]: With dead ends: 1465 [2023-12-15 19:51:49,082 INFO L226 Difference]: Without dead ends: 917 [2023-12-15 19:51:49,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:51:49,084 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 165 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:51:49,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 722 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:51:49,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2023-12-15 19:51:49,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 914. [2023-12-15 19:51:49,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 593 states have (on average 1.505902192242833) internal successors, (893), 600 states have internal predecessors, (893), 312 states have call successors, (312), 8 states have call predecessors, (312), 8 states have return successors, (312), 305 states have call predecessors, (312), 312 states have call successors, (312) [2023-12-15 19:51:49,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1517 transitions. [2023-12-15 19:51:49,152 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1517 transitions. Word has length 416 [2023-12-15 19:51:49,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:51:49,153 INFO L495 AbstractCegarLoop]: Abstraction has 914 states and 1517 transitions. [2023-12-15 19:51:49,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-15 19:51:49,154 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1517 transitions. [2023-12-15 19:51:49,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2023-12-15 19:51:49,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:49,169 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:51:49,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 19:51:49,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:49,376 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:49,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:49,377 INFO L85 PathProgramCache]: Analyzing trace with hash 206350686, now seen corresponding path program 1 times [2023-12-15 19:51:49,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:49,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206697034] [2023-12-15 19:51:49,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:49,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:49,436 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:51:49,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [61448795] [2023-12-15 19:51:49,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:49,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:49,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:49,438 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:51:49,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 19:51:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:49,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:51:49,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:49,927 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4356 proven. 81 refuted. 0 times theorem prover too weak. 4407 trivial. 0 not checked. [2023-12-15 19:51:49,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:51:50,199 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 117 proven. 81 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2023-12-15 19:51:50,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:50,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206697034] [2023-12-15 19:51:50,200 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:51:50,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61448795] [2023-12-15 19:51:50,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61448795] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:51:50,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:51:50,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 19:51:50,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389794038] [2023-12-15 19:51:50,200 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:51:50,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:51:50,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:50,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:51:50,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:51:50,202 INFO L87 Difference]: Start difference. First operand 914 states and 1517 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 2 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2023-12-15 19:51:50,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:51:50,564 INFO L93 Difference]: Finished difference Result 1474 states and 2457 transitions. [2023-12-15 19:51:50,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 19:51:50,565 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 2 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) Word has length 416 [2023-12-15 19:51:50,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:51:50,568 INFO L225 Difference]: With dead ends: 1474 [2023-12-15 19:51:50,569 INFO L226 Difference]: Without dead ends: 561 [2023-12-15 19:51:50,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 824 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 19:51:50,572 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 340 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:51:50,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 585 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:51:50,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2023-12-15 19:51:50,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 553. [2023-12-15 19:51:50,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 377 states have (on average 1.5411140583554377) internal successors, (581), 380 states have internal predecessors, (581), 170 states have call successors, (170), 5 states have call predecessors, (170), 5 states have return successors, (170), 167 states have call predecessors, (170), 170 states have call successors, (170) [2023-12-15 19:51:50,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 921 transitions. [2023-12-15 19:51:50,606 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 921 transitions. Word has length 416 [2023-12-15 19:51:50,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:51:50,607 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 921 transitions. [2023-12-15 19:51:50,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 2 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2023-12-15 19:51:50,607 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 921 transitions. [2023-12-15 19:51:50,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-12-15 19:51:50,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:50,610 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:51:50,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-15 19:51:50,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:50,817 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:50,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:50,817 INFO L85 PathProgramCache]: Analyzing trace with hash 938239699, now seen corresponding path program 1 times [2023-12-15 19:51:50,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:50,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393068710] [2023-12-15 19:51:50,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:50,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:50,859 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:51:50,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2098672591] [2023-12-15 19:51:50,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:50,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:50,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:50,860 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:51:50,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 19:51:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:51,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 19:51:51,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:51,337 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4182 proven. 72 refuted. 0 times theorem prover too weak. 4590 trivial. 0 not checked. [2023-12-15 19:51:51,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:51:51,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 126 proven. 72 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2023-12-15 19:51:51,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:51,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393068710] [2023-12-15 19:51:51,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:51:51,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098672591] [2023-12-15 19:51:51,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098672591] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:51:51,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:51:51,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-15 19:51:51,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684064571] [2023-12-15 19:51:51,565 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:51:51,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 19:51:51,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:51,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 19:51:51,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:51:51,567 INFO L87 Difference]: Start difference. First operand 553 states and 921 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 2 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2023-12-15 19:51:52,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:51:52,378 INFO L93 Difference]: Finished difference Result 1685 states and 2787 transitions. [2023-12-15 19:51:52,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 19:51:52,378 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 2 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) Word has length 417 [2023-12-15 19:51:52,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:51:52,385 INFO L225 Difference]: With dead ends: 1685 [2023-12-15 19:51:52,385 INFO L226 Difference]: Without dead ends: 1133 [2023-12-15 19:51:52,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 844 GetRequests, 825 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-15 19:51:52,388 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 763 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:51:52,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1082 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:51:52,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2023-12-15 19:51:52,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1111. [2023-12-15 19:51:52,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 758 states have (on average 1.5277044854881265) internal successors, (1158), 764 states have internal predecessors, (1158), 340 states have call successors, (340), 12 states have call predecessors, (340), 12 states have return successors, (340), 334 states have call predecessors, (340), 340 states have call successors, (340) [2023-12-15 19:51:52,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1838 transitions. [2023-12-15 19:51:52,486 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1838 transitions. Word has length 417 [2023-12-15 19:51:52,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:51:52,487 INFO L495 AbstractCegarLoop]: Abstraction has 1111 states and 1838 transitions. [2023-12-15 19:51:52,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 2 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2023-12-15 19:51:52,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1838 transitions. [2023-12-15 19:51:52,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-12-15 19:51:52,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:52,506 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:51:52,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 19:51:52,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:52,719 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:52,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:52,720 INFO L85 PathProgramCache]: Analyzing trace with hash -867198635, now seen corresponding path program 1 times [2023-12-15 19:51:52,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:52,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512469246] [2023-12-15 19:51:52,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:52,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:52,758 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:51:52,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [564225745] [2023-12-15 19:51:52,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:52,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:52,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:52,759 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:51:52,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 19:51:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:53,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 19:51:53,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:53,741 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4989 proven. 234 refuted. 0 times theorem prover too weak. 3621 trivial. 0 not checked. [2023-12-15 19:51:53,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:51:54,115 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 156 proven. 237 refuted. 0 times theorem prover too weak. 8451 trivial. 0 not checked. [2023-12-15 19:51:54,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:54,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512469246] [2023-12-15 19:51:54,116 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:51:54,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564225745] [2023-12-15 19:51:54,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564225745] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:51:54,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:51:54,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-15 19:51:54,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935157797] [2023-12-15 19:51:54,117 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:51:54,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-15 19:51:54,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:54,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-15 19:51:54,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-12-15 19:51:54,119 INFO L87 Difference]: Start difference. First operand 1111 states and 1838 transitions. Second operand has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 5 states have call successors, (110), 3 states have call predecessors, (110), 7 states have return successors, (111), 5 states have call predecessors, (111), 5 states have call successors, (111) [2023-12-15 19:51:54,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:51:54,644 INFO L93 Difference]: Finished difference Result 2329 states and 3759 transitions. [2023-12-15 19:51:54,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 19:51:54,645 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 5 states have call successors, (110), 3 states have call predecessors, (110), 7 states have return successors, (111), 5 states have call predecessors, (111), 5 states have call successors, (111) Word has length 417 [2023-12-15 19:51:54,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:51:54,652 INFO L225 Difference]: With dead ends: 2329 [2023-12-15 19:51:54,652 INFO L226 Difference]: Without dead ends: 1219 [2023-12-15 19:51:54,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 821 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=269, Unknown=0, NotChecked=0, Total=420 [2023-12-15 19:51:54,656 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 182 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:51:54,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 492 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 19:51:54,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2023-12-15 19:51:54,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1167. [2023-12-15 19:51:54,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 798 states have (on average 1.468671679197995) internal successors, (1172), 804 states have internal predecessors, (1172), 340 states have call successors, (340), 28 states have call predecessors, (340), 28 states have return successors, (340), 334 states have call predecessors, (340), 340 states have call successors, (340) [2023-12-15 19:51:54,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1852 transitions. [2023-12-15 19:51:54,748 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1852 transitions. Word has length 417 [2023-12-15 19:51:54,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:51:54,748 INFO L495 AbstractCegarLoop]: Abstraction has 1167 states and 1852 transitions. [2023-12-15 19:51:54,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 5 states have call successors, (110), 3 states have call predecessors, (110), 7 states have return successors, (111), 5 states have call predecessors, (111), 5 states have call successors, (111) [2023-12-15 19:51:54,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1852 transitions. [2023-12-15 19:51:54,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-12-15 19:51:54,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:54,752 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:51:54,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 19:51:54,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 19:51:54,963 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:54,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:54,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1797265673, now seen corresponding path program 1 times [2023-12-15 19:51:54,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:54,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019372859] [2023-12-15 19:51:54,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:54,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:55,000 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:51:55,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [968360277] [2023-12-15 19:51:55,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:55,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:55,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:55,002 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:51:55,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 19:51:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:55,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-15 19:51:55,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:56,871 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 5569 proven. 402 refuted. 0 times theorem prover too weak. 2873 trivial. 0 not checked. [2023-12-15 19:51:56,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:51:58,125 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 270 proven. 315 refuted. 0 times theorem prover too weak. 8259 trivial. 0 not checked. [2023-12-15 19:51:58,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:58,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019372859] [2023-12-15 19:51:58,126 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:51:58,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968360277] [2023-12-15 19:51:58,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968360277] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:51:58,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:51:58,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 27 [2023-12-15 19:51:58,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111412336] [2023-12-15 19:51:58,126 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:51:58,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-15 19:51:58,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:58,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-15 19:51:58,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=527, Unknown=0, NotChecked=0, Total=702 [2023-12-15 19:51:58,129 INFO L87 Difference]: Start difference. First operand 1167 states and 1852 transitions. Second operand has 27 states, 27 states have (on average 6.0) internal successors, (162), 27 states have internal predecessors, (162), 9 states have call successors, (110), 5 states have call predecessors, (110), 12 states have return successors, (111), 9 states have call predecessors, (111), 9 states have call successors, (111) [2023-12-15 19:52:00,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:52:00,870 INFO L93 Difference]: Finished difference Result 3871 states and 5962 transitions. [2023-12-15 19:52:00,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-15 19:52:00,876 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 6.0) internal successors, (162), 27 states have internal predecessors, (162), 9 states have call successors, (110), 5 states have call predecessors, (110), 12 states have return successors, (111), 9 states have call predecessors, (111), 9 states have call successors, (111) Word has length 417 [2023-12-15 19:52:00,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:52:00,895 INFO L225 Difference]: With dead ends: 3871 [2023-12-15 19:52:00,895 INFO L226 Difference]: Without dead ends: 2705 [2023-12-15 19:52:00,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 876 GetRequests, 809 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1425 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1238, Invalid=3454, Unknown=0, NotChecked=0, Total=4692 [2023-12-15 19:52:00,902 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 1320 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 1956 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 2483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 1956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:52:00,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1343 Valid, 1115 Invalid, 2483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 1956 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 19:52:00,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2023-12-15 19:52:01,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 1708. [2023-12-15 19:52:01,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1708 states, 1286 states have (on average 1.4813374805598756) internal successors, (1905), 1295 states have internal predecessors, (1905), 377 states have call successors, (377), 44 states have call predecessors, (377), 44 states have return successors, (377), 368 states have call predecessors, (377), 377 states have call successors, (377) [2023-12-15 19:52:01,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 2659 transitions. [2023-12-15 19:52:01,121 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 2659 transitions. Word has length 417 [2023-12-15 19:52:01,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:52:01,122 INFO L495 AbstractCegarLoop]: Abstraction has 1708 states and 2659 transitions. [2023-12-15 19:52:01,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.0) internal successors, (162), 27 states have internal predecessors, (162), 9 states have call successors, (110), 5 states have call predecessors, (110), 12 states have return successors, (111), 9 states have call predecessors, (111), 9 states have call successors, (111) [2023-12-15 19:52:01,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 2659 transitions. [2023-12-15 19:52:01,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-12-15 19:52:01,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:52:01,127 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:52:01,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-15 19:52:01,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:52:01,334 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:52:01,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:52:01,335 INFO L85 PathProgramCache]: Analyzing trace with hash -935494137, now seen corresponding path program 1 times [2023-12-15 19:52:01,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:52:01,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118069292] [2023-12-15 19:52:01,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:01,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:52:01,372 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:52:01,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73534969] [2023-12-15 19:52:01,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:01,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:52:01,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:52:01,374 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:52:01,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 19:52:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:52:01,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-15 19:52:01,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:52:03,172 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 6363 proven. 360 refuted. 0 times theorem prover too weak. 2121 trivial. 0 not checked. [2023-12-15 19:52:03,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:52:06,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:52:06,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118069292] [2023-12-15 19:52:06,264 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:52:06,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73534969] [2023-12-15 19:52:06,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73534969] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:52:06,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:52:06,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2023-12-15 19:52:06,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092825710] [2023-12-15 19:52:06,265 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 19:52:06,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-15 19:52:06,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:52:06,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-15 19:52:06,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=615, Unknown=0, NotChecked=0, Total=812 [2023-12-15 19:52:06,267 INFO L87 Difference]: Start difference. First operand 1708 states and 2659 transitions. Second operand has 19 states, 19 states have (on average 5.894736842105263) internal successors, (112), 18 states have internal predecessors, (112), 6 states have call successors, (67), 6 states have call predecessors, (67), 10 states have return successors, (67), 6 states have call predecessors, (67), 6 states have call successors, (67) [2023-12-15 19:52:09,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:52:09,105 INFO L93 Difference]: Finished difference Result 4867 states and 7505 transitions. [2023-12-15 19:52:09,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-15 19:52:09,106 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.894736842105263) internal successors, (112), 18 states have internal predecessors, (112), 6 states have call successors, (67), 6 states have call predecessors, (67), 10 states have return successors, (67), 6 states have call predecessors, (67), 6 states have call successors, (67) Word has length 417 [2023-12-15 19:52:09,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:52:09,119 INFO L225 Difference]: With dead ends: 4867 [2023-12-15 19:52:09,119 INFO L226 Difference]: Without dead ends: 3160 [2023-12-15 19:52:09,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 613 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1019 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1034, Invalid=2998, Unknown=0, NotChecked=0, Total=4032 [2023-12-15 19:52:09,125 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 1019 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 1677 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 1677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:52:09,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 1210 Invalid, 2015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 1677 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:52:09,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3160 states. [2023-12-15 19:52:09,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3160 to 1860. [2023-12-15 19:52:09,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1860 states, 1480 states have (on average 1.4912162162162161) internal successors, (2207), 1487 states have internal predecessors, (2207), 331 states have call successors, (331), 48 states have call predecessors, (331), 48 states have return successors, (331), 324 states have call predecessors, (331), 331 states have call successors, (331) [2023-12-15 19:52:09,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1860 states to 1860 states and 2869 transitions. [2023-12-15 19:52:09,306 INFO L78 Accepts]: Start accepts. Automaton has 1860 states and 2869 transitions. Word has length 417 [2023-12-15 19:52:09,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:52:09,307 INFO L495 AbstractCegarLoop]: Abstraction has 1860 states and 2869 transitions. [2023-12-15 19:52:09,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.894736842105263) internal successors, (112), 18 states have internal predecessors, (112), 6 states have call successors, (67), 6 states have call predecessors, (67), 10 states have return successors, (67), 6 states have call predecessors, (67), 6 states have call successors, (67) [2023-12-15 19:52:09,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1860 states and 2869 transitions. [2023-12-15 19:52:09,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-12-15 19:52:09,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:52:09,311 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:52:09,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 19:52:09,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 19:52:09,518 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:52:09,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:52:09,518 INFO L85 PathProgramCache]: Analyzing trace with hash 2079609481, now seen corresponding path program 1 times [2023-12-15 19:52:09,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:52:09,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632637815] [2023-12-15 19:52:09,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:09,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:52:09,551 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:52:09,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [17679804] [2023-12-15 19:52:09,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:09,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:52:09,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:52:09,553 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:52:09,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 19:52:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:52:09,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-15 19:52:09,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:52:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 5436 proven. 597 refuted. 0 times theorem prover too weak. 2811 trivial. 0 not checked. [2023-12-15 19:52:18,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:52:23,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:52:23,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632637815] [2023-12-15 19:52:23,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:52:23,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17679804] [2023-12-15 19:52:23,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17679804] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:52:23,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:52:23,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2023-12-15 19:52:23,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249698989] [2023-12-15 19:52:23,597 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 19:52:23,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-15 19:52:23,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:52:23,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-15 19:52:23,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=503, Unknown=1, NotChecked=0, Total=650 [2023-12-15 19:52:23,598 INFO L87 Difference]: Start difference. First operand 1860 states and 2869 transitions. Second operand has 22 states, 22 states have (on average 5.363636363636363) internal successors, (118), 21 states have internal predecessors, (118), 7 states have call successors, (67), 7 states have call predecessors, (67), 12 states have return successors, (67), 7 states have call predecessors, (67), 7 states have call successors, (67) [2023-12-15 19:52:27,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-15 19:52:31,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-15 19:52:35,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-15 19:52:39,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-15 19:52:43,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-15 19:52:47,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] Received shutdown request... [2023-12-15 19:52:48,019 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:52:48,049 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:52:49,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 19:52:49,220 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-15 19:52:49,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-15 19:52:49,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 604 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=202, Invalid=609, Unknown=1, NotChecked=0, Total=812 [2023-12-15 19:52:49,241 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 20 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 15 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:52:49,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 44 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 99 Invalid, 6 Unknown, 0 Unchecked, 24.1s Time] [2023-12-15 19:52:49,243 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:52:49,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 19:52:49,243 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-12-15 19:52:49,247 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:52:49,249 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:52:49,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:52:49 BoogieIcfgContainer [2023-12-15 19:52:49,251 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:52:49,251 INFO L158 Benchmark]: Toolchain (without parser) took 65894.99ms. Allocated memory was 284.2MB in the beginning and 659.6MB in the end (delta: 375.4MB). Free memory was 231.2MB in the beginning and 556.3MB in the end (delta: -325.1MB). Peak memory consumption was 51.3MB. Max. memory is 8.0GB. [2023-12-15 19:52:49,251 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 181.4MB. Free memory is still 131.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:52:49,251 INFO L158 Benchmark]: CACSL2BoogieTranslator took 432.53ms. Allocated memory is still 284.2MB. Free memory was 231.2MB in the beginning and 206.5MB in the end (delta: 24.6MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-15 19:52:49,251 INFO L158 Benchmark]: Boogie Procedure Inliner took 104.88ms. Allocated memory is still 284.2MB. Free memory was 206.5MB in the beginning and 195.5MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-15 19:52:49,252 INFO L158 Benchmark]: Boogie Preprocessor took 138.22ms. Allocated memory is still 284.2MB. Free memory was 195.5MB in the beginning and 182.4MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-15 19:52:49,252 INFO L158 Benchmark]: RCFGBuilder took 891.97ms. Allocated memory is still 284.2MB. Free memory was 182.4MB in the beginning and 118.5MB in the end (delta: 64.0MB). Peak memory consumption was 64.0MB. Max. memory is 8.0GB. [2023-12-15 19:52:49,252 INFO L158 Benchmark]: TraceAbstraction took 64322.17ms. Allocated memory was 284.2MB in the beginning and 659.6MB in the end (delta: 375.4MB). Free memory was 117.4MB in the beginning and 556.3MB in the end (delta: -438.9MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:52:49,253 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 181.4MB. Free memory is still 131.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 432.53ms. Allocated memory is still 284.2MB. Free memory was 231.2MB in the beginning and 206.5MB in the end (delta: 24.6MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 104.88ms. Allocated memory is still 284.2MB. Free memory was 206.5MB in the beginning and 195.5MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 138.22ms. Allocated memory is still 284.2MB. Free memory was 195.5MB in the beginning and 182.4MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * RCFGBuilder took 891.97ms. Allocated memory is still 284.2MB. Free memory was 182.4MB in the beginning and 118.5MB in the end (delta: 64.0MB). Peak memory consumption was 64.0MB. Max. memory is 8.0GB. * TraceAbstraction took 64322.17ms. Allocated memory was 284.2MB in the beginning and 659.6MB in the end (delta: 375.4MB). Free memory was 117.4MB in the beginning and 556.3MB in the end (delta: -438.9MB). There was no memory consumed. 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 executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 193 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 64.2s, OverallIterations: 11, TraceHistogramMax: 67, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 33.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 4408 SdHoareTripleChecker+Valid, 28.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4227 mSDsluCounter, 7625 SdHoareTripleChecker+Invalid, 27.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4481 mSDsCounter, 1246 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5450 IncrementalHoareTripleChecker+Invalid, 6703 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1246 mSolverCounterUnsat, 3144 mSDtfsCounter, 5450 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6775 GetRequests, 6567 SyntacticMatches, 3 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2727 ImplicationChecksByTransitivity, 12.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1860occurred in iteration=10, InterpolantAutomatonStates: 163, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 10 MinimizatonAttempts, 2388 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 23.9s InterpolantComputationTime, 4997 NumberOfCodeBlocks, 4997 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 6233 ConstructedInterpolants, 2 QuantifiedInterpolants, 28738 SizeOfPredicates, 53 NumberOfNonLiveVariables, 10133 ConjunctsInSsa, 121 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 130209/132660 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