/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-29.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 06:49:22,087 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 06:49:22,143 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 06:49:22,146 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 06:49:22,146 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 06:49:22,163 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 06:49:22,163 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 06:49:22,163 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 06:49:22,164 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 06:49:22,167 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 06:49:22,167 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 06:49:22,167 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 06:49:22,167 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 06:49:22,168 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 06:49:22,168 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 06:49:22,168 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 06:49:22,168 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 06:49:22,168 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 06:49:22,168 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 06:49:22,169 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 06:49:22,169 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 06:49:22,171 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 06:49:22,171 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 06:49:22,171 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 06:49:22,171 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 06:49:22,171 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 06:49:22,171 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 06:49:22,172 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 06:49:22,172 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 06:49:22,172 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 06:49:22,173 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 06:49:22,173 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 06:49:22,173 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 06:49:22,173 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 06:49:22,173 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 06:49:22,174 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 06:49:22,174 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 06:49:22,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 06:49:22,174 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 06:49:22,174 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 06:49:22,174 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 06:49:22,174 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 06:49:22,174 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 06:49:22,174 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 06:49:22,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 06:49:22,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 06:49:22,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 06:49:22,391 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 06:49:22,392 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 06:49:22,392 INFO L431 ainManager$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-29.i [2023-12-19 06:49:23,565 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 06:49:23,760 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 06:49:23,760 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-29.i [2023-12-19 06:49:23,776 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/552907326/24b749328da14167b86ff109df9f870e/FLAG036fcc397 [2023-12-19 06:49:23,786 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/552907326/24b749328da14167b86ff109df9f870e [2023-12-19 06:49:23,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 06:49:23,789 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 06:49:23,790 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 06:49:23,790 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 06:49:23,800 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 06:49:23,801 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:49:23" (1/1) ... [2023-12-19 06:49:23,801 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38c2a40b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:23, skipping insertion in model container [2023-12-19 06:49:23,802 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:49:23" (1/1) ... [2023-12-19 06:49:23,836 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 06:49:23,946 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-29.i[916,929] [2023-12-19 06:49:24,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 06:49:24,062 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 06:49:24,074 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-29.i[916,929] [2023-12-19 06:49:24,125 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 06:49:24,138 INFO L206 MainTranslator]: Completed translation [2023-12-19 06:49:24,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:24 WrapperNode [2023-12-19 06:49:24,138 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 06:49:24,139 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 06:49:24,139 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 06:49:24,139 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 06:49:24,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:24" (1/1) ... [2023-12-19 06:49:24,167 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:24" (1/1) ... [2023-12-19 06:49:24,250 INFO L138 Inliner]: procedures = 26, calls = 89, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 560 [2023-12-19 06:49:24,251 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 06:49:24,252 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 06:49:24,252 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 06:49:24,252 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 06:49:24,260 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:24" (1/1) ... [2023-12-19 06:49:24,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:24" (1/1) ... [2023-12-19 06:49:24,273 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:24" (1/1) ... [2023-12-19 06:49:24,297 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]. [2023-12-19 06:49:24,298 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:24" (1/1) ... [2023-12-19 06:49:24,298 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:24" (1/1) ... [2023-12-19 06:49:24,333 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:24" (1/1) ... [2023-12-19 06:49:24,343 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:24" (1/1) ... [2023-12-19 06:49:24,350 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:24" (1/1) ... [2023-12-19 06:49:24,369 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:24" (1/1) ... [2023-12-19 06:49:24,378 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 06:49:24,379 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 06:49:24,379 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 06:49:24,379 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 06:49:24,379 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:24" (1/1) ... [2023-12-19 06:49:24,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 06:49:24,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:49:24,429 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) [2023-12-19 06:49:24,432 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 [2023-12-19 06:49:24,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 06:49:24,467 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 06:49:24,467 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 06:49:24,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 06:49:24,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 06:49:24,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 06:49:24,595 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 06:49:24,618 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 06:49:25,279 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 06:49:25,304 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 06:49:25,304 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 06:49:25,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:49:25 BoogieIcfgContainer [2023-12-19 06:49:25,304 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 06:49:25,306 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 06:49:25,306 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 06:49:25,308 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 06:49:25,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 06:49:23" (1/3) ... [2023-12-19 06:49:25,308 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33dd4909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:49:25, skipping insertion in model container [2023-12-19 06:49:25,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:49:24" (2/3) ... [2023-12-19 06:49:25,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33dd4909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:49:25, skipping insertion in model container [2023-12-19 06:49:25,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:49:25" (3/3) ... [2023-12-19 06:49:25,309 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-29.i [2023-12-19 06:49:25,320 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 06:49:25,320 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 06:49:25,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 06:49:25,354 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;@1a8aebab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 06:49:25,354 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 06:49:25,357 INFO L276 IsEmpty]: Start isEmpty. Operand has 211 states, 132 states have (on average 1.628787878787879) internal successors, (215), 133 states have internal predecessors, (215), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-19 06:49:25,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2023-12-19 06:49:25,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:49:25,383 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:49:25,383 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:49:25,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:49:25,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1419024693, now seen corresponding path program 1 times [2023-12-19 06:49:25,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:49:25,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984130898] [2023-12-19 06:49:25,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:25,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:49:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:49:25,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:49:25,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984130898] [2023-12-19 06:49:25,670 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 06:49:25,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739039158] [2023-12-19 06:49:25,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:25,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:49:25,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:49:25,674 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) [2023-12-19 06:49:25,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 06:49:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:49:25,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 06:49:26,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:49:26,135 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 11250 trivial. 0 not checked. [2023-12-19 06:49:26,135 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:49:26,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739039158] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:49:26,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:49:26,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 06:49:26,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479104176] [2023-12-19 06:49:26,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:49:26,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 06:49:26,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:49:26,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 06:49:26,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 06:49:26,165 INFO L87 Difference]: Start difference. First operand has 211 states, 132 states have (on average 1.628787878787879) internal successors, (215), 133 states have internal predecessors, (215), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) Second operand has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) [2023-12-19 06:49:26,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:49:26,268 INFO L93 Difference]: Finished difference Result 419 states and 808 transitions. [2023-12-19 06:49:26,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 06:49:26,271 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) Word has length 467 [2023-12-19 06:49:26,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:49:26,277 INFO L225 Difference]: With dead ends: 419 [2023-12-19 06:49:26,277 INFO L226 Difference]: Without dead ends: 209 [2023-12-19 06:49:26,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 06:49:26,283 INFO L413 NwaCegarLoop]: 358 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, 358 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 [2023-12-19 06:49:26,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 358 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:49:26,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-12-19 06:49:26,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2023-12-19 06:49:26,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 131 states have (on average 1.5954198473282444) internal successors, (209), 131 states have internal predecessors, (209), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-19 06:49:26,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 361 transitions. [2023-12-19 06:49:26,327 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 361 transitions. Word has length 467 [2023-12-19 06:49:26,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:49:26,327 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 361 transitions. [2023-12-19 06:49:26,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) [2023-12-19 06:49:26,328 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 361 transitions. [2023-12-19 06:49:26,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2023-12-19 06:49:26,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:49:26,334 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:49:26,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 06:49:26,542 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 [2023-12-19 06:49:26,542 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:49:26,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:49:26,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1307272577, now seen corresponding path program 1 times [2023-12-19 06:49:26,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:49:26,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407805405] [2023-12-19 06:49:26,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:26,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:49:26,636 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:49:26,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [399465380] [2023-12-19 06:49:26,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:26,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:49:26,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:49:26,638 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) [2023-12-19 06:49:26,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 06:49:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:49:26,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 06:49:26,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:49:27,489 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-19 06:49:27,490 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:49:27,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:49:27,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407805405] [2023-12-19 06:49:27,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:49:27,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399465380] [2023-12-19 06:49:27,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399465380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:49:27,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:49:27,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 06:49:27,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890404313] [2023-12-19 06:49:27,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:49:27,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 06:49:27,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:49:27,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 06:49:27,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-19 06:49:27,494 INFO L87 Difference]: Start difference. First operand 209 states and 361 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 06:49:28,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:49:28,867 INFO L93 Difference]: Finished difference Result 1537 states and 2651 transitions. [2023-12-19 06:49:28,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 06:49:28,868 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 467 [2023-12-19 06:49:28,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:49:28,876 INFO L225 Difference]: With dead ends: 1537 [2023-12-19 06:49:28,876 INFO L226 Difference]: Without dead ends: 1329 [2023-12-19 06:49:28,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-19 06:49:28,878 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 1881 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 843 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 843 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 06:49:28,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 1994 Invalid, 1927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [843 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 06:49:28,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2023-12-19 06:49:29,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 770. [2023-12-19 06:49:29,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 485 states have (on average 1.5896907216494844) internal successors, (771), 486 states have internal predecessors, (771), 280 states have call successors, (280), 4 states have call predecessors, (280), 4 states have return successors, (280), 279 states have call predecessors, (280), 280 states have call successors, (280) [2023-12-19 06:49:29,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1331 transitions. [2023-12-19 06:49:29,029 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1331 transitions. Word has length 467 [2023-12-19 06:49:29,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:49:29,030 INFO L495 AbstractCegarLoop]: Abstraction has 770 states and 1331 transitions. [2023-12-19 06:49:29,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 06:49:29,030 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1331 transitions. [2023-12-19 06:49:29,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2023-12-19 06:49:29,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:49:29,036 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:49:29,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 06:49:29,242 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 [2023-12-19 06:49:29,243 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:49:29,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:49:29,244 INFO L85 PathProgramCache]: Analyzing trace with hash 993550013, now seen corresponding path program 1 times [2023-12-19 06:49:29,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:49:29,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618866696] [2023-12-19 06:49:29,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:29,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:49:29,289 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:49:29,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [335167730] [2023-12-19 06:49:29,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:29,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:49:29,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:49:29,292 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) [2023-12-19 06:49:29,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 06:49:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:49:29,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 06:49:29,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:49:29,594 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-19 06:49:29,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:49:29,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:49:29,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618866696] [2023-12-19 06:49:29,595 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:49:29,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335167730] [2023-12-19 06:49:29,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335167730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:49:29,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:49:29,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:49:29,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940056324] [2023-12-19 06:49:29,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:49:29,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:49:29,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:49:29,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:49:29,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:49:29,597 INFO L87 Difference]: Start difference. First operand 770 states and 1331 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 06:49:29,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:49:29,669 INFO L93 Difference]: Finished difference Result 2003 states and 3468 transitions. [2023-12-19 06:49:29,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:49:29,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 467 [2023-12-19 06:49:29,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:49:29,677 INFO L225 Difference]: With dead ends: 2003 [2023-12-19 06:49:29,677 INFO L226 Difference]: Without dead ends: 1234 [2023-12-19 06:49:29,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:49:29,680 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 215 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:49:29,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 779 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:49:29,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2023-12-19 06:49:29,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1228. [2023-12-19 06:49:29,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 819 states have (on average 1.6092796092796093) internal successors, (1318), 824 states have internal predecessors, (1318), 400 states have call successors, (400), 8 states have call predecessors, (400), 8 states have return successors, (400), 395 states have call predecessors, (400), 400 states have call successors, (400) [2023-12-19 06:49:29,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 2118 transitions. [2023-12-19 06:49:29,761 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 2118 transitions. Word has length 467 [2023-12-19 06:49:29,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:49:29,762 INFO L495 AbstractCegarLoop]: Abstraction has 1228 states and 2118 transitions. [2023-12-19 06:49:29,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 06:49:29,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 2118 transitions. [2023-12-19 06:49:29,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2023-12-19 06:49:29,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:49:29,766 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:49:29,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 06:49:29,973 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 [2023-12-19 06:49:29,974 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:49:29,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:49:29,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1417196735, now seen corresponding path program 1 times [2023-12-19 06:49:29,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:49:29,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558718577] [2023-12-19 06:49:29,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:29,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:49:30,009 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:49:30,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [189057665] [2023-12-19 06:49:30,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:30,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:49:30,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:49:30,011 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) [2023-12-19 06:49:30,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 06:49:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:49:30,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 06:49:30,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:49:30,272 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-19 06:49:30,272 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:49:30,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:49:30,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558718577] [2023-12-19 06:49:30,272 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:49:30,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189057665] [2023-12-19 06:49:30,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189057665] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:49:30,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:49:30,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:49:30,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132435623] [2023-12-19 06:49:30,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:49:30,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:49:30,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:49:30,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:49:30,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:49:30,274 INFO L87 Difference]: Start difference. First operand 1228 states and 2118 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 06:49:30,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:49:30,336 INFO L93 Difference]: Finished difference Result 2489 states and 4276 transitions. [2023-12-19 06:49:30,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:49:30,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 467 [2023-12-19 06:49:30,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:49:30,342 INFO L225 Difference]: With dead ends: 2489 [2023-12-19 06:49:30,342 INFO L226 Difference]: Without dead ends: 1262 [2023-12-19 06:49:30,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:49:30,345 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 183 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:49:30,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 773 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:49:30,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2023-12-19 06:49:30,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1000. [2023-12-19 06:49:30,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 711 states have (on average 1.6357243319268635) internal successors, (1163), 712 states have internal predecessors, (1163), 280 states have call successors, (280), 8 states have call predecessors, (280), 8 states have return successors, (280), 279 states have call predecessors, (280), 280 states have call successors, (280) [2023-12-19 06:49:30,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1723 transitions. [2023-12-19 06:49:30,427 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1723 transitions. Word has length 467 [2023-12-19 06:49:30,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:49:30,427 INFO L495 AbstractCegarLoop]: Abstraction has 1000 states and 1723 transitions. [2023-12-19 06:49:30,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 06:49:30,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1723 transitions. [2023-12-19 06:49:30,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2023-12-19 06:49:30,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:49:30,430 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:49:30,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 06:49:30,638 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 [2023-12-19 06:49:30,638 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:49:30,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:49:30,639 INFO L85 PathProgramCache]: Analyzing trace with hash 396128381, now seen corresponding path program 1 times [2023-12-19 06:49:30,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:49:30,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870691154] [2023-12-19 06:49:30,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:30,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:49:30,668 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:49:30,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1035295174] [2023-12-19 06:49:30,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:30,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:49:30,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:49:30,670 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) [2023-12-19 06:49:30,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 06:49:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:49:30,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 06:49:30,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:49:30,909 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-19 06:49:30,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:49:30,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:49:30,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870691154] [2023-12-19 06:49:30,909 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:49:30,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035295174] [2023-12-19 06:49:30,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035295174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:49:30,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:49:30,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:49:30,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028726773] [2023-12-19 06:49:30,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:49:30,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:49:30,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:49:30,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:49:30,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:49:30,911 INFO L87 Difference]: Start difference. First operand 1000 states and 1723 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 06:49:30,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:49:30,977 INFO L93 Difference]: Finished difference Result 2490 states and 4231 transitions. [2023-12-19 06:49:30,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:49:30,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 467 [2023-12-19 06:49:30,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:49:30,983 INFO L225 Difference]: With dead ends: 2490 [2023-12-19 06:49:30,983 INFO L226 Difference]: Without dead ends: 1491 [2023-12-19 06:49:30,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:49:30,986 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 188 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:49:30,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 707 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:49:30,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2023-12-19 06:49:31,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1486. [2023-12-19 06:49:31,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 969 states have (on average 1.5448916408668731) internal successors, (1497), 974 states have internal predecessors, (1497), 500 states have call successors, (500), 16 states have call predecessors, (500), 16 states have return successors, (500), 495 states have call predecessors, (500), 500 states have call successors, (500) [2023-12-19 06:49:31,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2497 transitions. [2023-12-19 06:49:31,058 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2497 transitions. Word has length 467 [2023-12-19 06:49:31,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:49:31,059 INFO L495 AbstractCegarLoop]: Abstraction has 1486 states and 2497 transitions. [2023-12-19 06:49:31,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 06:49:31,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2497 transitions. [2023-12-19 06:49:31,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2023-12-19 06:49:31,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:49:31,061 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:49:31,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 06:49:31,268 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 [2023-12-19 06:49:31,268 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:49:31,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:49:31,269 INFO L85 PathProgramCache]: Analyzing trace with hash -614988869, now seen corresponding path program 1 times [2023-12-19 06:49:31,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:49:31,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779987775] [2023-12-19 06:49:31,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:31,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:49:31,296 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:49:31,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1624972759] [2023-12-19 06:49:31,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:31,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:49:31,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:49:31,298 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) [2023-12-19 06:49:31,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 06:49:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:49:31,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 06:49:31,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:49:31,698 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 4443 proven. 57 refuted. 0 times theorem prover too weak. 6900 trivial. 0 not checked. [2023-12-19 06:49:31,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:49:31,982 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 168 proven. 57 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-12-19 06:49:31,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:49:31,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779987775] [2023-12-19 06:49:31,982 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:49:31,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624972759] [2023-12-19 06:49:31,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624972759] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:49:31,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:49:31,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 06:49:31,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980535348] [2023-12-19 06:49:31,983 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:49:31,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 06:49:31,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:49:31,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 06:49:31,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 06:49:31,985 INFO L87 Difference]: Start difference. First operand 1486 states and 2497 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2023-12-19 06:49:32,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:49:32,579 INFO L93 Difference]: Finished difference Result 2613 states and 4398 transitions. [2023-12-19 06:49:32,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 06:49:32,580 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) Word has length 467 [2023-12-19 06:49:32,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:49:32,585 INFO L225 Difference]: With dead ends: 2613 [2023-12-19 06:49:32,585 INFO L226 Difference]: Without dead ends: 1128 [2023-12-19 06:49:32,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 936 GetRequests, 926 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 06:49:32,590 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 223 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 06:49:32,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 939 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 06:49:32,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2023-12-19 06:49:32,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 1107. [2023-12-19 06:49:32,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 757 states have (on average 1.5759577278731836) internal successors, (1193), 759 states have internal predecessors, (1193), 336 states have call successors, (336), 13 states have call predecessors, (336), 13 states have return successors, (336), 334 states have call predecessors, (336), 336 states have call successors, (336) [2023-12-19 06:49:32,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1865 transitions. [2023-12-19 06:49:32,651 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1865 transitions. Word has length 467 [2023-12-19 06:49:32,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:49:32,651 INFO L495 AbstractCegarLoop]: Abstraction has 1107 states and 1865 transitions. [2023-12-19 06:49:32,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2023-12-19 06:49:32,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1865 transitions. [2023-12-19 06:49:32,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2023-12-19 06:49:32,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:49:32,654 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:49:32,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 06:49:32,861 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 [2023-12-19 06:49:32,861 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:49:32,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:49:32,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1675992059, now seen corresponding path program 1 times [2023-12-19 06:49:32,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:49:32,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317525353] [2023-12-19 06:49:32,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:32,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:49:32,890 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:49:32,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732391499] [2023-12-19 06:49:32,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:32,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:49:32,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:49:32,905 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) [2023-12-19 06:49:32,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 06:49:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:49:33,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 06:49:33,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:49:33,955 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5393 proven. 156 refuted. 0 times theorem prover too weak. 5851 trivial. 0 not checked. [2023-12-19 06:49:33,955 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:49:34,295 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 69 proven. 156 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-12-19 06:49:34,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:49:34,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317525353] [2023-12-19 06:49:34,296 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:49:34,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732391499] [2023-12-19 06:49:34,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732391499] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:49:34,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:49:34,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-19 06:49:34,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949116234] [2023-12-19 06:49:34,296 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:49:34,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 06:49:34,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:49:34,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 06:49:34,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-19 06:49:34,298 INFO L87 Difference]: Start difference. First operand 1107 states and 1865 transitions. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 5 states have call successors, (144), 3 states have call predecessors, (144), 5 states have return successors, (144), 5 states have call predecessors, (144), 5 states have call successors, (144) [2023-12-19 06:49:34,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:49:34,658 INFO L93 Difference]: Finished difference Result 2158 states and 3615 transitions. [2023-12-19 06:49:34,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 06:49:34,659 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 5 states have call successors, (144), 3 states have call predecessors, (144), 5 states have return successors, (144), 5 states have call predecessors, (144), 5 states have call successors, (144) Word has length 467 [2023-12-19 06:49:34,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:49:34,664 INFO L225 Difference]: With dead ends: 2158 [2023-12-19 06:49:34,664 INFO L226 Difference]: Without dead ends: 1147 [2023-12-19 06:49:34,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 936 GetRequests, 924 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-12-19 06:49:34,667 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 428 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:49:34,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 658 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 06:49:34,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2023-12-19 06:49:34,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1127. [2023-12-19 06:49:34,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 772 states have (on average 1.5595854922279793) internal successors, (1204), 774 states have internal predecessors, (1204), 336 states have call successors, (336), 18 states have call predecessors, (336), 18 states have return successors, (336), 334 states have call predecessors, (336), 336 states have call successors, (336) [2023-12-19 06:49:34,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1876 transitions. [2023-12-19 06:49:34,725 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1876 transitions. Word has length 467 [2023-12-19 06:49:34,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:49:34,726 INFO L495 AbstractCegarLoop]: Abstraction has 1127 states and 1876 transitions. [2023-12-19 06:49:34,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 5 states have call successors, (144), 3 states have call predecessors, (144), 5 states have return successors, (144), 5 states have call predecessors, (144), 5 states have call successors, (144) [2023-12-19 06:49:34,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1876 transitions. [2023-12-19 06:49:34,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2023-12-19 06:49:34,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:49:34,729 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:49:34,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 06:49:34,936 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 [2023-12-19 06:49:34,936 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:49:34,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:49:34,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1287035946, now seen corresponding path program 1 times [2023-12-19 06:49:34,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:49:34,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937610153] [2023-12-19 06:49:34,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:34,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:49:34,966 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:49:34,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [417977578] [2023-12-19 06:49:34,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:34,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:49:34,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:49:34,967 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) [2023-12-19 06:49:34,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 06:49:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:49:35,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 06:49:35,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:49:35,701 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-19 06:49:35,701 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:49:35,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:49:35,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937610153] [2023-12-19 06:49:35,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:49:35,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417977578] [2023-12-19 06:49:35,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417977578] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:49:35,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:49:35,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 06:49:35,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061780809] [2023-12-19 06:49:35,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:49:35,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 06:49:35,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:49:35,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 06:49:35,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-19 06:49:35,703 INFO L87 Difference]: Start difference. First operand 1127 states and 1876 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 06:49:36,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:49:36,980 INFO L93 Difference]: Finished difference Result 6766 states and 11259 transitions. [2023-12-19 06:49:36,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 06:49:36,981 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 468 [2023-12-19 06:49:36,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:49:37,004 INFO L225 Difference]: With dead ends: 6766 [2023-12-19 06:49:37,005 INFO L226 Difference]: Without dead ends: 5739 [2023-12-19 06:49:37,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-12-19 06:49:37,012 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 1814 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1814 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:49:37,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1814 Valid, 1695 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 06:49:37,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5739 states. [2023-12-19 06:49:37,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5739 to 3227. [2023-12-19 06:49:37,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3227 states, 2393 states have (on average 1.6172168825741746) internal successors, (3870), 2400 states have internal predecessors, (3870), 788 states have call successors, (788), 45 states have call predecessors, (788), 45 states have return successors, (788), 781 states have call predecessors, (788), 788 states have call successors, (788) [2023-12-19 06:49:37,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3227 states to 3227 states and 5446 transitions. [2023-12-19 06:49:37,254 INFO L78 Accepts]: Start accepts. Automaton has 3227 states and 5446 transitions. Word has length 468 [2023-12-19 06:49:37,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:49:37,254 INFO L495 AbstractCegarLoop]: Abstraction has 3227 states and 5446 transitions. [2023-12-19 06:49:37,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 06:49:37,255 INFO L276 IsEmpty]: Start isEmpty. Operand 3227 states and 5446 transitions. [2023-12-19 06:49:37,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2023-12-19 06:49:37,258 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:49:37,258 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:49:37,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 06:49:37,467 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 [2023-12-19 06:49:37,467 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:49:37,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:49:37,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1068181228, now seen corresponding path program 1 times [2023-12-19 06:49:37,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:49:37,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759857048] [2023-12-19 06:49:37,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:37,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:49:37,506 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:49:37,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [181070312] [2023-12-19 06:49:37,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:37,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:49:37,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:49:37,507 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) [2023-12-19 06:49:37,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 06:49:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:49:37,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 06:49:37,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:49:37,910 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 3795 proven. 45 refuted. 0 times theorem prover too weak. 7560 trivial. 0 not checked. [2023-12-19 06:49:37,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:49:38,056 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-19 06:49:38,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:49:38,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759857048] [2023-12-19 06:49:38,057 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:49:38,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181070312] [2023-12-19 06:49:38,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181070312] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 06:49:38,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:49:38,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-19 06:49:38,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123949002] [2023-12-19 06:49:38,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:49:38,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:49:38,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:49:38,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:49:38,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 06:49:38,059 INFO L87 Difference]: Start difference. First operand 3227 states and 5446 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 06:49:38,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:49:38,230 INFO L93 Difference]: Finished difference Result 6386 states and 10803 transitions. [2023-12-19 06:49:38,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:49:38,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 468 [2023-12-19 06:49:38,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:49:38,241 INFO L225 Difference]: With dead ends: 6386 [2023-12-19 06:49:38,241 INFO L226 Difference]: Without dead ends: 3259 [2023-12-19 06:49:38,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 934 GetRequests, 929 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 06:49:38,247 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 0 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:49:38,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 697 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:49:38,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3259 states. [2023-12-19 06:49:38,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3259 to 3259. [2023-12-19 06:49:38,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3259 states, 2425 states have (on average 1.6090721649484536) internal successors, (3902), 2432 states have internal predecessors, (3902), 788 states have call successors, (788), 45 states have call predecessors, (788), 45 states have return successors, (788), 781 states have call predecessors, (788), 788 states have call successors, (788) [2023-12-19 06:49:38,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3259 states to 3259 states and 5478 transitions. [2023-12-19 06:49:38,510 INFO L78 Accepts]: Start accepts. Automaton has 3259 states and 5478 transitions. Word has length 468 [2023-12-19 06:49:38,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:49:38,511 INFO L495 AbstractCegarLoop]: Abstraction has 3259 states and 5478 transitions. [2023-12-19 06:49:38,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 06:49:38,513 INFO L276 IsEmpty]: Start isEmpty. Operand 3259 states and 5478 transitions. [2023-12-19 06:49:38,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2023-12-19 06:49:38,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:49:38,517 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:49:38,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 06:49:38,724 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 [2023-12-19 06:49:38,725 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:49:38,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:49:38,725 INFO L85 PathProgramCache]: Analyzing trace with hash -927632618, now seen corresponding path program 1 times [2023-12-19 06:49:38,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:49:38,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024235155] [2023-12-19 06:49:38,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:38,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:49:38,779 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:49:38,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1290463840] [2023-12-19 06:49:38,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:38,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:49:38,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:49:38,796 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) [2023-12-19 06:49:38,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 06:49:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:49:39,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 06:49:39,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:49:39,213 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 1615 proven. 15 refuted. 0 times theorem prover too weak. 9770 trivial. 0 not checked. [2023-12-19 06:49:39,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:49:39,456 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-19 06:49:39,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:49:39,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024235155] [2023-12-19 06:49:39,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:49:39,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290463840] [2023-12-19 06:49:39,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290463840] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 06:49:39,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:49:39,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-19 06:49:39,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385905822] [2023-12-19 06:49:39,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:49:39,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 06:49:39,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:49:39,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 06:49:39,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 06:49:39,459 INFO L87 Difference]: Start difference. First operand 3259 states and 5478 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 06:49:40,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:49:40,029 INFO L93 Difference]: Finished difference Result 11240 states and 18719 transitions. [2023-12-19 06:49:40,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 06:49:40,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 468 [2023-12-19 06:49:40,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:49:40,071 INFO L225 Difference]: With dead ends: 11240 [2023-12-19 06:49:40,071 INFO L226 Difference]: Without dead ends: 8081 [2023-12-19 06:49:40,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 934 GetRequests, 926 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 06:49:40,080 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 498 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 06:49:40,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 1253 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 06:49:40,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8081 states. [2023-12-19 06:49:40,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8081 to 8059. [2023-12-19 06:49:40,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8059 states, 5983 states have (on average 1.5781380578305197) internal successors, (9442), 6014 states have internal predecessors, (9442), 1952 states have call successors, (1952), 123 states have call predecessors, (1952), 123 states have return successors, (1952), 1921 states have call predecessors, (1952), 1952 states have call successors, (1952) [2023-12-19 06:49:40,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8059 states to 8059 states and 13346 transitions. [2023-12-19 06:49:40,565 INFO L78 Accepts]: Start accepts. Automaton has 8059 states and 13346 transitions. Word has length 468 [2023-12-19 06:49:40,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:49:40,565 INFO L495 AbstractCegarLoop]: Abstraction has 8059 states and 13346 transitions. [2023-12-19 06:49:40,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 06:49:40,565 INFO L276 IsEmpty]: Start isEmpty. Operand 8059 states and 13346 transitions. [2023-12-19 06:49:40,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2023-12-19 06:49:40,573 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:49:40,573 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:49:40,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 06:49:40,780 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 [2023-12-19 06:49:40,781 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:49:40,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:49:40,781 INFO L85 PathProgramCache]: Analyzing trace with hash -504930792, now seen corresponding path program 1 times [2023-12-19 06:49:40,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:49:40,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32103749] [2023-12-19 06:49:40,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:40,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:49:40,811 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:49:40,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1042486802] [2023-12-19 06:49:40,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:40,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:49:40,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:49:40,813 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) [2023-12-19 06:49:40,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 06:49:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:49:41,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 06:49:41,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:49:41,589 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-19 06:49:41,589 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:49:41,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:49:41,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32103749] [2023-12-19 06:49:41,589 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:49:41,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042486802] [2023-12-19 06:49:41,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042486802] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:49:41,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:49:41,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 06:49:41,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881581492] [2023-12-19 06:49:41,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:49:41,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:49:41,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:49:41,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:49:41,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:49:41,591 INFO L87 Difference]: Start difference. First operand 8059 states and 13346 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 06:49:42,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:49:42,231 INFO L93 Difference]: Finished difference Result 23977 states and 39732 transitions. [2023-12-19 06:49:42,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:49:42,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 468 [2023-12-19 06:49:42,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:49:42,270 INFO L225 Difference]: With dead ends: 23977 [2023-12-19 06:49:42,270 INFO L226 Difference]: Without dead ends: 16018 [2023-12-19 06:49:42,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:49:42,289 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 118 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:49:42,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 706 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:49:42,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16018 states. [2023-12-19 06:49:43,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16018 to 16016. [2023-12-19 06:49:43,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16016 states, 11924 states have (on average 1.5771553170077155) internal successors, (18806), 11985 states have internal predecessors, (18806), 3848 states have call successors, (3848), 243 states have call predecessors, (3848), 243 states have return successors, (3848), 3787 states have call predecessors, (3848), 3848 states have call successors, (3848) [2023-12-19 06:49:43,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16016 states to 16016 states and 26502 transitions. [2023-12-19 06:49:43,361 INFO L78 Accepts]: Start accepts. Automaton has 16016 states and 26502 transitions. Word has length 468 [2023-12-19 06:49:43,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:49:43,362 INFO L495 AbstractCegarLoop]: Abstraction has 16016 states and 26502 transitions. [2023-12-19 06:49:43,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-19 06:49:43,362 INFO L276 IsEmpty]: Start isEmpty. Operand 16016 states and 26502 transitions. [2023-12-19 06:49:43,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2023-12-19 06:49:43,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:49:43,369 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:49:43,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-19 06:49:43,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 06:49:43,577 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:49:43,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:49:43,578 INFO L85 PathProgramCache]: Analyzing trace with hash -503083750, now seen corresponding path program 1 times [2023-12-19 06:49:43,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:49:43,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551052159] [2023-12-19 06:49:43,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:43,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:49:43,610 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:49:43,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [182669069] [2023-12-19 06:49:43,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:49:43,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:49:43,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:49:43,634 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:49:43,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 06:49:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:49:43,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 06:49:43,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:49:44,443 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5503 proven. 87 refuted. 0 times theorem prover too weak. 5810 trivial. 0 not checked. [2023-12-19 06:49:44,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:49:44,847 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 138 proven. 87 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-12-19 06:49:44,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:49:44,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551052159] [2023-12-19 06:49:44,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:49:44,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182669069] [2023-12-19 06:49:44,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182669069] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:49:44,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:49:44,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2023-12-19 06:49:44,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086953051] [2023-12-19 06:49:44,847 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:49:44,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-19 06:49:44,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:49:44,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-19 06:49:44,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2023-12-19 06:49:44,849 INFO L87 Difference]: Start difference. First operand 16016 states and 26502 transitions. Second operand has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 19 states have internal predecessors, (139), 3 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 3 states have call predecessors, (106), 3 states have call successors, (106) [2023-12-19 06:50:07,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:50:07,602 INFO L93 Difference]: Finished difference Result 177692 states and 279047 transitions. [2023-12-19 06:50:07,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-12-19 06:50:07,603 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 19 states have internal predecessors, (139), 3 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 3 states have call predecessors, (106), 3 states have call successors, (106) Word has length 468 [2023-12-19 06:50:07,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:50:08,367 INFO L225 Difference]: With dead ends: 177692 [2023-12-19 06:50:08,368 INFO L226 Difference]: Without dead ends: 159504 [2023-12-19 06:50:08,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1049 GetRequests, 939 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4495 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2928, Invalid=9504, Unknown=0, NotChecked=0, Total=12432 [2023-12-19 06:50:08,454 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 5029 mSDsluCounter, 4037 mSDsCounter, 0 mSdLazyCounter, 4856 mSolverCounterSat, 3448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5074 SdHoareTripleChecker+Valid, 4723 SdHoareTripleChecker+Invalid, 8304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3448 IncrementalHoareTripleChecker+Valid, 4856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-19 06:50:08,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5074 Valid, 4723 Invalid, 8304 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3448 Valid, 4856 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-19 06:50:08,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159504 states. [2023-12-19 06:50:14,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159504 to 48288. [2023-12-19 06:50:14,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48288 states, 36574 states have (on average 1.5790999070377865) internal successors, (57754), 36807 states have internal predecessors, (57754), 10884 states have call successors, (10884), 829 states have call predecessors, (10884), 829 states have return successors, (10884), 10651 states have call predecessors, (10884), 10884 states have call successors, (10884) [2023-12-19 06:50:15,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48288 states to 48288 states and 79522 transitions. [2023-12-19 06:50:15,037 INFO L78 Accepts]: Start accepts. Automaton has 48288 states and 79522 transitions. Word has length 468 [2023-12-19 06:50:15,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:50:15,037 INFO L495 AbstractCegarLoop]: Abstraction has 48288 states and 79522 transitions. [2023-12-19 06:50:15,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 19 states have internal predecessors, (139), 3 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 3 states have call predecessors, (106), 3 states have call successors, (106) [2023-12-19 06:50:15,038 INFO L276 IsEmpty]: Start isEmpty. Operand 48288 states and 79522 transitions. [2023-12-19 06:50:15,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2023-12-19 06:50:15,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:50:15,052 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:50:15,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 06:50:15,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 06:50:15,260 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:50:15,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:50:15,260 INFO L85 PathProgramCache]: Analyzing trace with hash 198516124, now seen corresponding path program 1 times [2023-12-19 06:50:15,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:50:15,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410491635] [2023-12-19 06:50:15,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:50:15,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:50:15,292 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:50:15,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1194044673] [2023-12-19 06:50:15,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:50:15,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:50:15,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:50:15,309 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:50:15,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 06:50:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:50:15,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 06:50:15,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:50:15,790 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 1615 proven. 15 refuted. 0 times theorem prover too weak. 9770 trivial. 0 not checked. [2023-12-19 06:50:15,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:50:16,015 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 210 proven. 15 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-12-19 06:50:16,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:50:16,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410491635] [2023-12-19 06:50:16,015 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:50:16,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194044673] [2023-12-19 06:50:16,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194044673] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:50:16,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:50:16,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-19 06:50:16,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451333626] [2023-12-19 06:50:16,016 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:50:16,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 06:50:16,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:50:16,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 06:50:16,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-19 06:50:16,039 INFO L87 Difference]: Start difference. First operand 48288 states and 79522 transitions. Second operand has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 3 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 3 states have call predecessors, (82), 3 states have call successors, (82) [2023-12-19 06:50:27,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:50:27,411 INFO L93 Difference]: Finished difference Result 154984 states and 253447 transitions. [2023-12-19 06:50:27,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 06:50:27,413 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 3 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 3 states have call predecessors, (82), 3 states have call successors, (82) Word has length 468 [2023-12-19 06:50:27,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:50:27,894 INFO L225 Difference]: With dead ends: 154984 [2023-12-19 06:50:27,894 INFO L226 Difference]: Without dead ends: 106804 [2023-12-19 06:50:27,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 946 GetRequests, 927 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=150, Invalid=270, Unknown=0, NotChecked=0, Total=420 [2023-12-19 06:50:27,974 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 619 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 06:50:27,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 1106 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 06:50:28,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106804 states. [2023-12-19 06:50:36,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106804 to 87240. [2023-12-19 06:50:36,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87240 states, 68194 states have (on average 1.592280845822213) internal successors, (108584), 68671 states have internal predecessors, (108584), 17716 states have call successors, (17716), 1329 states have call predecessors, (17716), 1329 states have return successors, (17716), 17239 states have call predecessors, (17716), 17716 states have call successors, (17716) [2023-12-19 06:50:36,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87240 states to 87240 states and 144016 transitions. [2023-12-19 06:50:36,312 INFO L78 Accepts]: Start accepts. Automaton has 87240 states and 144016 transitions. Word has length 468 [2023-12-19 06:50:36,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:50:36,313 INFO L495 AbstractCegarLoop]: Abstraction has 87240 states and 144016 transitions. [2023-12-19 06:50:36,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 3 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 3 states have call predecessors, (82), 3 states have call successors, (82) [2023-12-19 06:50:36,313 INFO L276 IsEmpty]: Start isEmpty. Operand 87240 states and 144016 transitions. [2023-12-19 06:50:36,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2023-12-19 06:50:36,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:50:36,342 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:50:36,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-19 06:50:36,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 06:50:36,550 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:50:36,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:50:36,550 INFO L85 PathProgramCache]: Analyzing trace with hash -219499656, now seen corresponding path program 1 times [2023-12-19 06:50:36,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:50:36,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277525262] [2023-12-19 06:50:36,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:50:36,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:50:36,585 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:50:36,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921762] [2023-12-19 06:50:36,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:50:36,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:50:36,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:50:36,586 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:50:36,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 06:50:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:50:36,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 06:50:36,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:51:10,148 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 06:51:26,301 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 06:51:58,588 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 06:52:14,700 WARN L293 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 06:53:18,050 WARN L293 SmtUtils]: Spent 25.11s on a formula simplification. DAG size of input: 54 DAG size of output: 48 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 06:55:29,424 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5269 proven. 78 refuted. 0 times theorem prover too weak. 6053 trivial. 0 not checked. [2023-12-19 06:55:29,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:55:41,652 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 06:55:49,823 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 06:55:57,968 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 06:56:06,014 WARN L293 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 06:56:25,199 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 06:56:37,334 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 06:56:45,353 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 06:56:53,369 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 06:57:00,545 WARN L293 SmtUtils]: Spent 7.13s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 06:57:15,439 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 06:57:26,399 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 06:57:55,199 WARN L293 SmtUtils]: Spent 6.09s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 06:58:12,862 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 06:58:19,862 WARN L293 SmtUtils]: Spent 6.35s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 06:58:26,738 WARN L293 SmtUtils]: Spent 6.29s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 06:58:47,081 WARN L293 SmtUtils]: Spent 7.99s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 06:58:55,398 WARN L293 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 06:59:03,581 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 06:59:15,337 WARN L876 $PredicateComparison]: unable to prove that (or (let ((.cse1 (< c_~var_1_47~0 0)) (.cse2 (not (= c_~var_1_65~0 0))) (.cse0 (div |c_ULTIMATE.start_step_#t~nondet5#1| c_~var_1_47~0))) (and (or (< 0 (+ .cse0 2)) .cse1 .cse2) (or (< 0 c_~var_1_47~0) (let ((.cse19 (* (- 1) c_~var_1_47~0))) (let ((.cse18 (div |c_ULTIMATE.start_step_#t~nondet5#1| .cse19)) (.cse10 (div |c_ULTIMATE.start_step_#t~nondet5#1| 0))) (let ((.cse12 (= (mod |c_ULTIMATE.start_step_#t~nondet5#1| .cse19) 0)) (.cse16 (+ .cse10 2)) (.cse11 (+ .cse18 2))) (let ((.cse3 (< 0 .cse11)) (.cse9 (= .cse16 0)) (.cse4 (not .cse12)) (.cse5 (= c_~var_1_47~0 0))) (and (or .cse3 .cse4 .cse5) (or (let ((.cse8 (+ .cse10 1))) (let ((.cse6 (= .cse8 0)) (.cse7 (< 0 .cse8))) (and (or .cse6 .cse7 .cse2) (or (and (or .cse7 .cse2) (<= 0 .cse8)) (< |c_ULTIMATE.start_step_#t~nondet5#1| 0)) (or .cse6 .cse7 .cse9) (or .cse6 .cse7 .cse2 .cse9)))) .cse1) (or (< 0 (+ |c_ULTIMATE.start_step_#t~nondet5#1| 1)) (and (or .cse3 .cse2) (<= 0 .cse11)) .cse12) (or (let ((.cse17 (+ .cse18 1))) (let ((.cse13 (= .cse17 0)) (.cse15 (= .cse11 0)) (.cse14 (< 0 .cse17))) (and (or .cse13 .cse14 .cse15) (or .cse13 .cse14 (< 0 .cse16) .cse15 .cse9) (or .cse14 .cse4 .cse5)))) .cse2))))))) (or .cse1 (< 0 (+ .cse0 3))) (or (< c_~var_1_47~0 1) (let ((.cse21 (+ .cse0 1))) (let ((.cse20 (< 0 .cse21))) (and (or .cse20 .cse2) (or .cse20 (= .cse21 0))))) (not (= (mod |c_ULTIMATE.start_step_#t~nondet5#1| c_~var_1_47~0) 0))))) (< (mod c_~var_1_39~0 65536) 1)) is different from true [2023-12-19 06:59:15,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:59:15,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277525262] [2023-12-19 06:59:15,449 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:59:15,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921762] [2023-12-19 06:59:15,449 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-12-19 06:59:15,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 06:59:15,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:59:15,657 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: Modulus must be strictly greater one but is 0 at de.uni_freiburg.informatik.ultimate.util.ArithmeticUtils.multiplicativeInverse(ArithmeticUtils.java:89) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDml.findAllDmlPossibilities(DualJunctionDml.java:168) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDml.tryToEliminate(DualJunctionDml.java:191) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:543) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:522) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:515) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:326) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-19 06:59:15,664 INFO L158 Benchmark]: Toolchain (without parser) took 591874.46ms. Allocated memory was 359.7MB in the beginning and 4.6GB in the end (delta: 4.2GB). Free memory was 309.6MB in the beginning and 3.6GB in the end (delta: -3.3GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2023-12-19 06:59:15,666 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 180.4MB. Free memory is still 133.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 06:59:15,666 INFO L158 Benchmark]: CACSL2BoogieTranslator took 348.30ms. Allocated memory is still 359.7MB. Free memory was 309.2MB in the beginning and 286.6MB in the end (delta: 22.7MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-12-19 06:59:15,666 INFO L158 Benchmark]: Boogie Procedure Inliner took 112.59ms. Allocated memory is still 359.7MB. Free memory was 286.6MB in the beginning and 277.1MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-19 06:59:15,666 INFO L158 Benchmark]: Boogie Preprocessor took 126.17ms. Allocated memory is still 359.7MB. Free memory was 277.1MB in the beginning and 269.0MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-19 06:59:15,667 INFO L158 Benchmark]: RCFGBuilder took 925.66ms. Allocated memory is still 359.7MB. Free memory was 269.0MB in the beginning and 278.8MB in the end (delta: -9.8MB). Peak memory consumption was 30.3MB. Max. memory is 8.0GB. [2023-12-19 06:59:15,667 INFO L158 Benchmark]: TraceAbstraction took 590357.63ms. Allocated memory was 359.7MB in the beginning and 4.6GB in the end (delta: 4.2GB). Free memory was 278.3MB in the beginning and 3.6GB in the end (delta: -3.3GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2023-12-19 06:59:15,670 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 180.4MB. Free memory is still 133.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 348.30ms. Allocated memory is still 359.7MB. Free memory was 309.2MB in the beginning and 286.6MB in the end (delta: 22.7MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 112.59ms. Allocated memory is still 359.7MB. Free memory was 286.6MB in the beginning and 277.1MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 126.17ms. Allocated memory is still 359.7MB. Free memory was 277.1MB in the beginning and 269.0MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * RCFGBuilder took 925.66ms. Allocated memory is still 359.7MB. Free memory was 269.0MB in the beginning and 278.8MB in the end (delta: -9.8MB). Peak memory consumption was 30.3MB. Max. memory is 8.0GB. * TraceAbstraction took 590357.63ms. Allocated memory was 359.7MB in the beginning and 4.6GB in the end (delta: 4.2GB). Free memory was 278.3MB in the beginning and 3.6GB in the end (delta: -3.3GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalArgumentException: Modulus must be strictly greater one but is 0 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: Modulus must be strictly greater one but is 0: de.uni_freiburg.informatik.ultimate.util.ArithmeticUtils.multiplicativeInverse(ArithmeticUtils.java:89) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-12-19 06:59:15,817 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 0 Received shutdown request...