/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-35.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 19:57:48,145 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 19:57:48,182 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 19:57:48,185 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 19:57:48,186 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 19:57:48,205 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 19:57:48,206 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 19:57:48,206 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 19:57:48,206 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 19:57:48,207 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 19:57:48,207 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 19:57:48,207 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 19:57:48,207 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 19:57:48,208 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 19:57:48,228 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 19:57:48,228 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 19:57:48,229 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 19:57:48,229 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 19:57:48,229 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 19:57:48,229 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 19:57:48,229 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 19:57:48,232 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 19:57:48,232 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 19:57:48,232 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 19:57:48,232 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 19:57:48,232 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 19:57:48,233 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 19:57:48,233 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 19:57:48,233 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 19:57:48,233 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 19:57:48,233 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 19:57:48,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 19:57:48,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 19:57:48,234 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 19:57:48,234 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 19:57:48,234 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 19:57:48,234 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 19:57:48,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 19:57:48,235 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 19:57:48,235 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 19:57:48,235 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 19:57:48,237 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 19:57:48,238 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 19:57:48,238 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 19:57:48,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 19:57:48,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 19:57:48,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 19:57:48,442 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 19:57:48,444 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 19:57:48,445 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-35.i [2023-12-20 19:57:49,481 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 19:57:49,688 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 19:57:49,689 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-35.i [2023-12-20 19:57:49,698 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e8e511a8/703cd9997f3b45da822799f8cb843d84/FLAGd4dc254a0 [2023-12-20 19:57:49,707 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e8e511a8/703cd9997f3b45da822799f8cb843d84 [2023-12-20 19:57:49,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 19:57:49,710 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 19:57:49,711 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 19:57:49,711 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 19:57:49,718 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 19:57:49,718 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 07:57:49" (1/1) ... [2023-12-20 19:57:49,720 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2219ec03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:57:49, skipping insertion in model container [2023-12-20 19:57:49,720 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 07:57:49" (1/1) ... [2023-12-20 19:57:49,761 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 19:57:49,863 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-500_file-35.i[916,929] [2023-12-20 19:57:50,014 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 19:57:50,033 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 19:57:50,050 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-500_file-35.i[916,929] [2023-12-20 19:57:50,132 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 19:57:50,180 INFO L206 MainTranslator]: Completed translation [2023-12-20 19:57:50,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:57:50 WrapperNode [2023-12-20 19:57:50,182 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 19:57:50,183 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 19:57:50,183 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 19:57:50,183 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 19:57:50,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:57:50" (1/1) ... [2023-12-20 19:57:50,208 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:57:50" (1/1) ... [2023-12-20 19:57:50,274 INFO L138 Inliner]: procedures = 26, calls = 133, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 772 [2023-12-20 19:57:50,275 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 19:57:50,275 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 19:57:50,275 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 19:57:50,276 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 19:57:50,291 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:57:50" (1/1) ... [2023-12-20 19:57:50,291 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:57:50" (1/1) ... [2023-12-20 19:57:50,306 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:57:50" (1/1) ... [2023-12-20 19:57:50,338 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]. [2023-12-20 19:57:50,339 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:57:50" (1/1) ... [2023-12-20 19:57:50,339 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:57:50" (1/1) ... [2023-12-20 19:57:50,369 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:57:50" (1/1) ... [2023-12-20 19:57:50,381 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:57:50" (1/1) ... [2023-12-20 19:57:50,386 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:57:50" (1/1) ... [2023-12-20 19:57:50,391 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:57:50" (1/1) ... [2023-12-20 19:57:50,403 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 19:57:50,405 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 19:57:50,405 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 19:57:50,405 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 19:57:50,405 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:57:50" (1/1) ... [2023-12-20 19:57:50,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 19:57:50,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:57:50,427 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) [2023-12-20 19:57:50,438 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 [2023-12-20 19:57:50,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 19:57:50,450 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 19:57:50,451 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 19:57:50,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 19:57:50,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 19:57:50,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 19:57:50,555 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 19:57:50,556 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 19:57:51,246 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 19:57:51,284 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 19:57:51,284 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 19:57:51,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 07:57:51 BoogieIcfgContainer [2023-12-20 19:57:51,284 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 19:57:51,286 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 19:57:51,286 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 19:57:51,289 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 19:57:51,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 07:57:49" (1/3) ... [2023-12-20 19:57:51,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2670ac83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 07:57:51, skipping insertion in model container [2023-12-20 19:57:51,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:57:50" (2/3) ... [2023-12-20 19:57:51,290 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2670ac83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 07:57:51, skipping insertion in model container [2023-12-20 19:57:51,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 07:57:51" (3/3) ... [2023-12-20 19:57:51,291 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-35.i [2023-12-20 19:57:51,303 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 19:57:51,303 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 19:57:51,352 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 19:57:51,356 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;@74575b0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 19:57:51,357 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 19:57:51,364 INFO L276 IsEmpty]: Start isEmpty. Operand has 317 states, 194 states have (on average 1.5515463917525774) internal successors, (301), 195 states have internal predecessors, (301), 120 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-20 19:57:51,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 748 [2023-12-20 19:57:51,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:57:51,414 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:57:51,415 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:57:51,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:57:51,419 INFO L85 PathProgramCache]: Analyzing trace with hash 533565867, now seen corresponding path program 1 times [2023-12-20 19:57:51,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:57:51,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638699866] [2023-12-20 19:57:51,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:57:51,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:57:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:57:51,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:57:51,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638699866] [2023-12-20 19:57:51,756 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 19:57:51,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796065472] [2023-12-20 19:57:51,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:57:51,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:57:51,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:57:51,759 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) [2023-12-20 19:57:51,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 19:57:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:57:52,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-20 19:57:52,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:57:52,208 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 28322 trivial. 0 not checked. [2023-12-20 19:57:52,208 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:57:52,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796065472] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:57:52,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:57:52,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 19:57:52,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990285962] [2023-12-20 19:57:52,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:57:52,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 19:57:52,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:57:52,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 19:57:52,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 19:57:52,244 INFO L87 Difference]: Start difference. First operand has 317 states, 194 states have (on average 1.5515463917525774) internal successors, (301), 195 states have internal predecessors, (301), 120 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) Second operand has 2 states, 2 states have (on average 76.0) internal successors, (152), 2 states have internal predecessors, (152), 2 states have call successors, (120), 2 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 2 states have call successors, (120) [2023-12-20 19:57:52,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:57:52,323 INFO L93 Difference]: Finished difference Result 631 states and 1200 transitions. [2023-12-20 19:57:52,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 19:57:52,326 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.0) internal successors, (152), 2 states have internal predecessors, (152), 2 states have call successors, (120), 2 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 2 states have call successors, (120) Word has length 747 [2023-12-20 19:57:52,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:57:52,337 INFO L225 Difference]: With dead ends: 631 [2023-12-20 19:57:52,338 INFO L226 Difference]: Without dead ends: 315 [2023-12-20 19:57:52,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 746 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 19:57:52,347 INFO L413 NwaCegarLoop]: 533 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, 533 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 [2023-12-20 19:57:52,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 533 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 19:57:52,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-12-20 19:57:52,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2023-12-20 19:57:52,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 193 states have (on average 1.5336787564766838) internal successors, (296), 193 states have internal predecessors, (296), 120 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-20 19:57:52,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 536 transitions. [2023-12-20 19:57:52,450 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 536 transitions. Word has length 747 [2023-12-20 19:57:52,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:57:52,451 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 536 transitions. [2023-12-20 19:57:52,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.0) internal successors, (152), 2 states have internal predecessors, (152), 2 states have call successors, (120), 2 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 2 states have call successors, (120) [2023-12-20 19:57:52,452 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 536 transitions. [2023-12-20 19:57:52,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 748 [2023-12-20 19:57:52,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:57:52,466 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:57:52,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 19:57:52,674 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 [2023-12-20 19:57:52,675 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:57:52,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:57:52,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1533982541, now seen corresponding path program 1 times [2023-12-20 19:57:52,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:57:52,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511546297] [2023-12-20 19:57:52,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:57:52,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:57:52,795 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:57:52,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1972238201] [2023-12-20 19:57:52,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:57:52,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:57:52,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:57:52,801 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) [2023-12-20 19:57:52,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 19:57:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:57:53,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 19:57:53,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:57:53,202 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-20 19:57:53,202 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:57:53,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:57:53,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511546297] [2023-12-20 19:57:53,202 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:57:53,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972238201] [2023-12-20 19:57:53,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972238201] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:57:53,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:57:53,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 19:57:53,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363130822] [2023-12-20 19:57:53,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:57:53,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 19:57:53,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:57:53,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 19:57:53,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:57:53,208 INFO L87 Difference]: Start difference. First operand 315 states and 536 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 19:57:53,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:57:53,268 INFO L93 Difference]: Finished difference Result 629 states and 1071 transitions. [2023-12-20 19:57:53,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 19:57:53,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 747 [2023-12-20 19:57:53,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:57:53,274 INFO L225 Difference]: With dead ends: 629 [2023-12-20 19:57:53,274 INFO L226 Difference]: Without dead ends: 315 [2023-12-20 19:57:53,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 745 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:57:53,276 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 17 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1043 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 [2023-12-20 19:57:53,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1043 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 19:57:53,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-12-20 19:57:53,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2023-12-20 19:57:53,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 193 states have (on average 1.528497409326425) internal successors, (295), 193 states have internal predecessors, (295), 120 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-20 19:57:53,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 535 transitions. [2023-12-20 19:57:53,299 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 535 transitions. Word has length 747 [2023-12-20 19:57:53,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:57:53,302 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 535 transitions. [2023-12-20 19:57:53,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 19:57:53,303 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 535 transitions. [2023-12-20 19:57:53,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2023-12-20 19:57:53,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:57:53,309 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:57:53,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 19:57:53,520 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 [2023-12-20 19:57:53,521 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:57:53,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:57:53,522 INFO L85 PathProgramCache]: Analyzing trace with hash -785747725, now seen corresponding path program 1 times [2023-12-20 19:57:53,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:57:53,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384865899] [2023-12-20 19:57:53,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:57:53,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:57:53,623 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:57:53,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1271898289] [2023-12-20 19:57:53,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:57:53,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:57:53,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:57:53,630 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) [2023-12-20 19:57:53,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 19:57:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:57:53,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 1649 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 19:57:53,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:57:54,044 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-20 19:57:54,045 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:57:54,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:57:54,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384865899] [2023-12-20 19:57:54,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:57:54,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271898289] [2023-12-20 19:57:54,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271898289] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:57:54,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:57:54,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 19:57:54,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65804563] [2023-12-20 19:57:54,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:57:54,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 19:57:54,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:57:54,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 19:57:54,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:57:54,049 INFO L87 Difference]: Start difference. First operand 315 states and 535 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 19:57:54,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:57:54,105 INFO L93 Difference]: Finished difference Result 781 states and 1335 transitions. [2023-12-20 19:57:54,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 19:57:54,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 748 [2023-12-20 19:57:54,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:57:54,112 INFO L225 Difference]: With dead ends: 781 [2023-12-20 19:57:54,112 INFO L226 Difference]: Without dead ends: 467 [2023-12-20 19:57:54,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 746 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:57:54,115 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 255 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 19:57:54,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 1043 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 19:57:54,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-12-20 19:57:54,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 464. [2023-12-20 19:57:54,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 321 states have (on average 1.601246105919003) internal successors, (514), 322 states have internal predecessors, (514), 140 states have call successors, (140), 2 states have call predecessors, (140), 2 states have return successors, (140), 139 states have call predecessors, (140), 140 states have call successors, (140) [2023-12-20 19:57:54,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 794 transitions. [2023-12-20 19:57:54,154 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 794 transitions. Word has length 748 [2023-12-20 19:57:54,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:57:54,157 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 794 transitions. [2023-12-20 19:57:54,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 19:57:54,158 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 794 transitions. [2023-12-20 19:57:54,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2023-12-20 19:57:54,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:57:54,163 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:57:54,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 19:57:54,370 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 [2023-12-20 19:57:54,373 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:57:54,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:57:54,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1753098379, now seen corresponding path program 1 times [2023-12-20 19:57:54,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:57:54,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791953781] [2023-12-20 19:57:54,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:57:54,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:57:54,430 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:57:54,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [344319109] [2023-12-20 19:57:54,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:57:54,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:57:54,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:57:54,432 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) [2023-12-20 19:57:54,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 19:57:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:57:54,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 19:57:54,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:57:54,791 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-20 19:57:54,792 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:57:54,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:57:54,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791953781] [2023-12-20 19:57:54,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:57:54,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344319109] [2023-12-20 19:57:54,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344319109] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:57:54,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:57:54,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 19:57:54,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238928451] [2023-12-20 19:57:54,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:57:54,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 19:57:54,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:57:54,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 19:57:54,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:57:54,808 INFO L87 Difference]: Start difference. First operand 464 states and 794 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 19:57:54,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:57:54,850 INFO L93 Difference]: Finished difference Result 1244 states and 2134 transitions. [2023-12-20 19:57:54,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 19:57:54,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 748 [2023-12-20 19:57:54,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:57:54,855 INFO L225 Difference]: With dead ends: 1244 [2023-12-20 19:57:54,855 INFO L226 Difference]: Without dead ends: 781 [2023-12-20 19:57:54,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 746 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:57:54,859 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 309 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 19:57:54,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 1297 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 19:57:54,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2023-12-20 19:57:54,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 778. [2023-12-20 19:57:54,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 565 states have (on average 1.6247787610619469) internal successors, (918), 568 states have internal predecessors, (918), 208 states have call successors, (208), 4 states have call predecessors, (208), 4 states have return successors, (208), 205 states have call predecessors, (208), 208 states have call successors, (208) [2023-12-20 19:57:54,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1334 transitions. [2023-12-20 19:57:54,898 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1334 transitions. Word has length 748 [2023-12-20 19:57:54,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:57:54,899 INFO L495 AbstractCegarLoop]: Abstraction has 778 states and 1334 transitions. [2023-12-20 19:57:54,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 19:57:54,900 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1334 transitions. [2023-12-20 19:57:54,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2023-12-20 19:57:54,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:57:54,905 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:57:54,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 19:57:55,112 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 [2023-12-20 19:57:55,113 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:57:55,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:57:55,113 INFO L85 PathProgramCache]: Analyzing trace with hash 2049242743, now seen corresponding path program 1 times [2023-12-20 19:57:55,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:57:55,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278466258] [2023-12-20 19:57:55,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:57:55,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:57:55,157 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:57:55,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2131591344] [2023-12-20 19:57:55,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:57:55,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:57:55,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:57:55,159 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) [2023-12-20 19:57:55,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 19:57:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:57:55,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 1647 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 19:57:55,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:57:55,555 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-20 19:57:55,556 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:57:55,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:57:55,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278466258] [2023-12-20 19:57:55,556 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:57:55,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131591344] [2023-12-20 19:57:55,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131591344] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:57:55,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:57:55,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 19:57:55,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991455633] [2023-12-20 19:57:55,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:57:55,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 19:57:55,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:57:55,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 19:57:55,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:57:55,558 INFO L87 Difference]: Start difference. First operand 778 states and 1334 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 19:57:55,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:57:55,594 INFO L93 Difference]: Finished difference Result 1562 states and 2672 transitions. [2023-12-20 19:57:55,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 19:57:55,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 748 [2023-12-20 19:57:55,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:57:55,598 INFO L225 Difference]: With dead ends: 1562 [2023-12-20 19:57:55,598 INFO L226 Difference]: Without dead ends: 785 [2023-12-20 19:57:55,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 746 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:57:55,600 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 263 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 19:57:55,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 1081 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 19:57:55,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2023-12-20 19:57:55,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 622. [2023-12-20 19:57:55,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 478 states have (on average 1.6799163179916319) internal successors, (803), 479 states have internal predecessors, (803), 140 states have call successors, (140), 3 states have call predecessors, (140), 3 states have return successors, (140), 139 states have call predecessors, (140), 140 states have call successors, (140) [2023-12-20 19:57:55,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 1083 transitions. [2023-12-20 19:57:55,624 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 1083 transitions. Word has length 748 [2023-12-20 19:57:55,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:57:55,625 INFO L495 AbstractCegarLoop]: Abstraction has 622 states and 1083 transitions. [2023-12-20 19:57:55,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 19:57:55,625 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 1083 transitions. [2023-12-20 19:57:55,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2023-12-20 19:57:55,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:57:55,630 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:57:55,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 19:57:55,837 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 [2023-12-20 19:57:55,838 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:57:55,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:57:55,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1231594293, now seen corresponding path program 1 times [2023-12-20 19:57:55,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:57:55,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48209222] [2023-12-20 19:57:55,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:57:55,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:57:55,884 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:57:55,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [743504859] [2023-12-20 19:57:55,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:57:55,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:57:55,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:57:55,886 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) [2023-12-20 19:57:55,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 19:57:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:57:56,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 19:57:56,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:57:56,247 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-20 19:57:56,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:57:56,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:57:56,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48209222] [2023-12-20 19:57:56,248 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:57:56,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743504859] [2023-12-20 19:57:56,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743504859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:57:56,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:57:56,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 19:57:56,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294844125] [2023-12-20 19:57:56,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:57:56,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 19:57:56,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:57:56,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 19:57:56,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:57:56,250 INFO L87 Difference]: Start difference. First operand 622 states and 1083 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 19:57:56,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:57:56,292 INFO L93 Difference]: Finished difference Result 1681 states and 2921 transitions. [2023-12-20 19:57:56,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 19:57:56,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 748 [2023-12-20 19:57:56,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:57:56,297 INFO L225 Difference]: With dead ends: 1681 [2023-12-20 19:57:56,297 INFO L226 Difference]: Without dead ends: 1060 [2023-12-20 19:57:56,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 746 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:57:56,299 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 357 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 19:57:56,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 1051 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 19:57:56,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2023-12-20 19:57:56,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1057. [2023-12-20 19:57:56,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 802 states have (on average 1.667082294264339) internal successors, (1337), 805 states have internal predecessors, (1337), 248 states have call successors, (248), 6 states have call predecessors, (248), 6 states have return successors, (248), 245 states have call predecessors, (248), 248 states have call successors, (248) [2023-12-20 19:57:56,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1833 transitions. [2023-12-20 19:57:56,333 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1833 transitions. Word has length 748 [2023-12-20 19:57:56,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:57:56,334 INFO L495 AbstractCegarLoop]: Abstraction has 1057 states and 1833 transitions. [2023-12-20 19:57:56,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 19:57:56,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1833 transitions. [2023-12-20 19:57:56,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2023-12-20 19:57:56,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:57:56,340 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:57:56,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 19:57:56,564 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 [2023-12-20 19:57:56,565 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:57:56,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:57:56,565 INFO L85 PathProgramCache]: Analyzing trace with hash 750514035, now seen corresponding path program 1 times [2023-12-20 19:57:56,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:57:56,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863464485] [2023-12-20 19:57:56,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:57:56,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:57:56,618 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:57:56,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [179329284] [2023-12-20 19:57:56,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:57:56,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:57:56,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:57:56,620 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) [2023-12-20 19:57:56,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 19:57:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:57:56,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 1649 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 19:57:56,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:57:56,984 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-20 19:57:56,984 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:57:56,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:57:56,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863464485] [2023-12-20 19:57:56,984 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:57:56,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179329284] [2023-12-20 19:57:56,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179329284] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:57:56,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:57:56,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 19:57:56,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017117357] [2023-12-20 19:57:56,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:57:56,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 19:57:56,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:57:56,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 19:57:56,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:57:56,986 INFO L87 Difference]: Start difference. First operand 1057 states and 1833 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 19:57:57,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:57:57,073 INFO L93 Difference]: Finished difference Result 2902 states and 5006 transitions. [2023-12-20 19:57:57,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 19:57:57,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 748 [2023-12-20 19:57:57,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:57:57,081 INFO L225 Difference]: With dead ends: 2902 [2023-12-20 19:57:57,081 INFO L226 Difference]: Without dead ends: 1846 [2023-12-20 19:57:57,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 746 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:57:57,083 INFO L413 NwaCegarLoop]: 868 mSDtfsCounter, 350 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 19:57:57,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 1388 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 19:57:57,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2023-12-20 19:57:57,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1843. [2023-12-20 19:57:57,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1843 states, 1359 states have (on average 1.6291390728476822) internal successors, (2214), 1366 states have internal predecessors, (2214), 471 states have call successors, (471), 12 states have call predecessors, (471), 12 states have return successors, (471), 464 states have call predecessors, (471), 471 states have call successors, (471) [2023-12-20 19:57:57,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 3156 transitions. [2023-12-20 19:57:57,150 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 3156 transitions. Word has length 748 [2023-12-20 19:57:57,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:57:57,150 INFO L495 AbstractCegarLoop]: Abstraction has 1843 states and 3156 transitions. [2023-12-20 19:57:57,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 19:57:57,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 3156 transitions. [2023-12-20 19:57:57,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2023-12-20 19:57:57,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:57:57,157 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:57:57,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 19:57:57,365 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 [2023-12-20 19:57:57,366 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:57:57,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:57:57,367 INFO L85 PathProgramCache]: Analyzing trace with hash 734995317, now seen corresponding path program 1 times [2023-12-20 19:57:57,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:57:57,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311903745] [2023-12-20 19:57:57,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:57:57,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:57:57,413 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:57:57,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1121629986] [2023-12-20 19:57:57,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:57:57,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:57:57,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:57:57,415 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) [2023-12-20 19:57:57,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 19:57:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:57:57,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 1650 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 19:57:57,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:57:57,813 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-20 19:57:57,814 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:57:57,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:57:57,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311903745] [2023-12-20 19:57:57,814 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:57:57,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121629986] [2023-12-20 19:57:57,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121629986] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:57:57,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:57:57,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 19:57:57,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765681148] [2023-12-20 19:57:57,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:57:57,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 19:57:57,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:57:57,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 19:57:57,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 19:57:57,816 INFO L87 Difference]: Start difference. First operand 1843 states and 3156 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 19:57:58,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:57:58,197 INFO L93 Difference]: Finished difference Result 5519 states and 9448 transitions. [2023-12-20 19:57:58,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 19:57:58,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 748 [2023-12-20 19:57:58,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:57:58,212 INFO L225 Difference]: With dead ends: 5519 [2023-12-20 19:57:58,212 INFO L226 Difference]: Without dead ends: 3677 [2023-12-20 19:57:58,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 749 GetRequests, 746 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 19:57:58,218 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 1195 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 1834 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 19:57:58,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1195 Valid, 1834 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 19:57:58,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3677 states. [2023-12-20 19:57:58,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3677 to 1859. [2023-12-20 19:57:58,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1375 states have (on average 1.6218181818181818) internal successors, (2230), 1382 states have internal predecessors, (2230), 471 states have call successors, (471), 12 states have call predecessors, (471), 12 states have return successors, (471), 464 states have call predecessors, (471), 471 states have call successors, (471) [2023-12-20 19:57:58,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 3172 transitions. [2023-12-20 19:57:58,332 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 3172 transitions. Word has length 748 [2023-12-20 19:57:58,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:57:58,333 INFO L495 AbstractCegarLoop]: Abstraction has 1859 states and 3172 transitions. [2023-12-20 19:57:58,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 19:57:58,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 3172 transitions. [2023-12-20 19:57:58,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2023-12-20 19:57:58,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:57:58,339 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:57:58,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 19:57:58,546 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 [2023-12-20 19:57:58,547 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:57:58,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:57:58,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1157697143, now seen corresponding path program 1 times [2023-12-20 19:57:58,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:57:58,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736297139] [2023-12-20 19:57:58,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:57:58,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:57:58,597 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:57:58,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1719862910] [2023-12-20 19:57:58,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:57:58,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:57:58,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:57:58,598 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) [2023-12-20 19:57:58,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 19:57:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:57:58,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 1649 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 19:57:58,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:58:00,475 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-20 19:58:00,475 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:58:00,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:58:00,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736297139] [2023-12-20 19:58:00,476 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:58:00,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719862910] [2023-12-20 19:58:00,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719862910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:58:00,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:58:00,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 19:58:00,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62898021] [2023-12-20 19:58:00,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:58:00,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 19:58:00,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:58:00,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 19:58:00,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:58:00,478 INFO L87 Difference]: Start difference. First operand 1859 states and 3172 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 19:58:00,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:58:00,612 INFO L93 Difference]: Finished difference Result 5575 states and 9514 transitions. [2023-12-20 19:58:00,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 19:58:00,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 748 [2023-12-20 19:58:00,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:58:00,627 INFO L225 Difference]: With dead ends: 5575 [2023-12-20 19:58:00,627 INFO L226 Difference]: Without dead ends: 3717 [2023-12-20 19:58:00,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 746 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:58:00,633 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 178 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 19:58:00,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 1135 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 19:58:00,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3717 states. [2023-12-20 19:58:00,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3717 to 3715. [2023-12-20 19:58:00,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3715 states, 2748 states have (on average 1.6106259097525473) internal successors, (4426), 2762 states have internal predecessors, (4426), 942 states have call successors, (942), 24 states have call predecessors, (942), 24 states have return successors, (942), 928 states have call predecessors, (942), 942 states have call successors, (942) [2023-12-20 19:58:00,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3715 states to 3715 states and 6310 transitions. [2023-12-20 19:58:00,848 INFO L78 Accepts]: Start accepts. Automaton has 3715 states and 6310 transitions. Word has length 748 [2023-12-20 19:58:00,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:58:00,849 INFO L495 AbstractCegarLoop]: Abstraction has 3715 states and 6310 transitions. [2023-12-20 19:58:00,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 19:58:00,850 INFO L276 IsEmpty]: Start isEmpty. Operand 3715 states and 6310 transitions. [2023-12-20 19:58:00,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2023-12-20 19:58:00,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:58:00,857 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:58:00,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 19:58:01,065 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 [2023-12-20 19:58:01,066 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:58:01,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:58:01,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1242797954, now seen corresponding path program 1 times [2023-12-20 19:58:01,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:58:01,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073403513] [2023-12-20 19:58:01,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:58:01,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:58:01,109 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:58:01,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630888269] [2023-12-20 19:58:01,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:58:01,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:58:01,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:58:01,112 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) [2023-12-20 19:58:01,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 19:58:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:58:01,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 1652 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 19:58:01,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:58:01,725 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 12047 proven. 105 refuted. 0 times theorem prover too weak. 16408 trivial. 0 not checked. [2023-12-20 19:58:01,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 19:58:02,021 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 252 proven. 105 refuted. 0 times theorem prover too weak. 28203 trivial. 0 not checked. [2023-12-20 19:58:02,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:58:02,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073403513] [2023-12-20 19:58:02,022 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:58:02,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630888269] [2023-12-20 19:58:02,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630888269] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 19:58:02,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 19:58:02,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-20 19:58:02,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836716355] [2023-12-20 19:58:02,023 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 19:58:02,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 19:58:02,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:58:02,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 19:58:02,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 19:58:02,034 INFO L87 Difference]: Start difference. First operand 3715 states and 6310 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 2 states have call successors, (155), 2 states have call predecessors, (155), 4 states have return successors, (156), 2 states have call predecessors, (156), 2 states have call successors, (156) [2023-12-20 19:58:03,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:58:03,014 INFO L93 Difference]: Finished difference Result 7654 states and 12918 transitions. [2023-12-20 19:58:03,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 19:58:03,015 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 2 states have call successors, (155), 2 states have call predecessors, (155), 4 states have return successors, (156), 2 states have call predecessors, (156), 2 states have call successors, (156) Word has length 749 [2023-12-20 19:58:03,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:58:03,029 INFO L225 Difference]: With dead ends: 7654 [2023-12-20 19:58:03,029 INFO L226 Difference]: Without dead ends: 3940 [2023-12-20 19:58:03,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1500 GetRequests, 1490 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-20 19:58:03,036 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 334 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 19:58:03,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 1360 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 19:58:03,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3940 states. [2023-12-20 19:58:03,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3940 to 3885. [2023-12-20 19:58:03,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3885 states, 2824 states have (on average 1.5743626062322946) internal successors, (4446), 2839 states have internal predecessors, (4446), 1026 states have call successors, (1026), 34 states have call predecessors, (1026), 34 states have return successors, (1026), 1011 states have call predecessors, (1026), 1026 states have call successors, (1026) [2023-12-20 19:58:03,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3885 states to 3885 states and 6498 transitions. [2023-12-20 19:58:03,231 INFO L78 Accepts]: Start accepts. Automaton has 3885 states and 6498 transitions. Word has length 749 [2023-12-20 19:58:03,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:58:03,232 INFO L495 AbstractCegarLoop]: Abstraction has 3885 states and 6498 transitions. [2023-12-20 19:58:03,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 2 states have call successors, (155), 2 states have call predecessors, (155), 4 states have return successors, (156), 2 states have call predecessors, (156), 2 states have call successors, (156) [2023-12-20 19:58:03,232 INFO L276 IsEmpty]: Start isEmpty. Operand 3885 states and 6498 transitions. [2023-12-20 19:58:03,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2023-12-20 19:58:03,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:58:03,239 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:58:03,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 19:58:03,447 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 [2023-12-20 19:58:03,447 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:58:03,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:58:03,448 INFO L85 PathProgramCache]: Analyzing trace with hash -2113753466, now seen corresponding path program 1 times [2023-12-20 19:58:03,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:58:03,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542562214] [2023-12-20 19:58:03,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:58:03,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:58:03,523 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:58:03,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1997620537] [2023-12-20 19:58:03,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:58:03,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:58:03,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:58:03,524 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) [2023-12-20 19:58:03,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 19:58:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:58:03,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 19:58:03,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:58:04,039 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 9429 proven. 72 refuted. 0 times theorem prover too weak. 19059 trivial. 0 not checked. [2023-12-20 19:58:04,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 19:58:04,313 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 285 proven. 72 refuted. 0 times theorem prover too weak. 28203 trivial. 0 not checked. [2023-12-20 19:58:04,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:58:04,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542562214] [2023-12-20 19:58:04,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:58:04,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997620537] [2023-12-20 19:58:04,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997620537] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 19:58:04,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 19:58:04,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-20 19:58:04,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138383864] [2023-12-20 19:58:04,314 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 19:58:04,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 19:58:04,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:58:04,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 19:58:04,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 19:58:04,316 INFO L87 Difference]: Start difference. First operand 3885 states and 6498 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 2 states have call successors, (144), 2 states have call predecessors, (144), 4 states have return successors, (145), 2 states have call predecessors, (145), 2 states have call successors, (145) [2023-12-20 19:58:05,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:58:05,142 INFO L93 Difference]: Finished difference Result 6106 states and 10193 transitions. [2023-12-20 19:58:05,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 19:58:05,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 2 states have call successors, (144), 2 states have call predecessors, (144), 4 states have return successors, (145), 2 states have call predecessors, (145), 2 states have call successors, (145) Word has length 749 [2023-12-20 19:58:05,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:58:05,151 INFO L225 Difference]: With dead ends: 6106 [2023-12-20 19:58:05,151 INFO L226 Difference]: Without dead ends: 2360 [2023-12-20 19:58:05,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1500 GetRequests, 1490 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-20 19:58:05,159 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 576 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 19:58:05,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 1230 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 19:58:05,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2360 states. [2023-12-20 19:58:05,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2360 to 2323. [2023-12-20 19:58:05,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2323 states, 1707 states have (on average 1.5705916813122438) internal successors, (2681), 1714 states have internal predecessors, (2681), 591 states have call successors, (591), 24 states have call predecessors, (591), 24 states have return successors, (591), 584 states have call predecessors, (591), 591 states have call successors, (591) [2023-12-20 19:58:05,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 3863 transitions. [2023-12-20 19:58:05,303 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 3863 transitions. Word has length 749 [2023-12-20 19:58:05,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:58:05,304 INFO L495 AbstractCegarLoop]: Abstraction has 2323 states and 3863 transitions. [2023-12-20 19:58:05,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 2 states have call successors, (144), 2 states have call predecessors, (144), 4 states have return successors, (145), 2 states have call predecessors, (145), 2 states have call successors, (145) [2023-12-20 19:58:05,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 3863 transitions. [2023-12-20 19:58:05,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2023-12-20 19:58:05,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:58:05,310 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:58:05,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 19:58:05,516 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 [2023-12-20 19:58:05,516 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:58:05,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:58:05,517 INFO L85 PathProgramCache]: Analyzing trace with hash 831978384, now seen corresponding path program 1 times [2023-12-20 19:58:05,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:58:05,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472119659] [2023-12-20 19:58:05,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:58:05,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:58:05,556 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:58:05,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2005733171] [2023-12-20 19:58:05,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:58:05,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:58:05,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:58:05,558 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) [2023-12-20 19:58:05,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 19:58:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:58:05,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 19:58:05,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:58:05,966 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-20 19:58:05,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:58:05,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:58:05,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472119659] [2023-12-20 19:58:05,966 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:58:05,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005733171] [2023-12-20 19:58:05,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005733171] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:58:05,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:58:05,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 19:58:05,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537431453] [2023-12-20 19:58:05,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:58:05,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 19:58:05,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:58:05,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 19:58:05,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 19:58:05,969 INFO L87 Difference]: Start difference. First operand 2323 states and 3863 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 19:58:06,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:58:06,647 INFO L93 Difference]: Finished difference Result 6865 states and 11398 transitions. [2023-12-20 19:58:06,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 19:58:06,648 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 749 [2023-12-20 19:58:06,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:58:06,676 INFO L225 Difference]: With dead ends: 6865 [2023-12-20 19:58:06,676 INFO L226 Difference]: Without dead ends: 4707 [2023-12-20 19:58:06,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 744 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-20 19:58:06,683 INFO L413 NwaCegarLoop]: 1022 mSDtfsCounter, 613 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 2356 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 19:58:06,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 2356 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 19:58:06,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4707 states. [2023-12-20 19:58:06,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4707 to 2991. [2023-12-20 19:58:06,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2991 states, 2078 states have (on average 1.5033686236766122) internal successors, (3124), 2097 states have internal predecessors, (3124), 871 states have call successors, (871), 41 states have call predecessors, (871), 41 states have return successors, (871), 852 states have call predecessors, (871), 871 states have call successors, (871) [2023-12-20 19:58:06,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2991 states to 2991 states and 4866 transitions. [2023-12-20 19:58:06,877 INFO L78 Accepts]: Start accepts. Automaton has 2991 states and 4866 transitions. Word has length 749 [2023-12-20 19:58:06,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:58:06,878 INFO L495 AbstractCegarLoop]: Abstraction has 2991 states and 4866 transitions. [2023-12-20 19:58:06,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 19:58:06,878 INFO L276 IsEmpty]: Start isEmpty. Operand 2991 states and 4866 transitions. [2023-12-20 19:58:06,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2023-12-20 19:58:06,884 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:58:06,884 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:58:06,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 19:58:07,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-20 19:58:07,093 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:58:07,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:58:07,093 INFO L85 PathProgramCache]: Analyzing trace with hash 22631758, now seen corresponding path program 1 times [2023-12-20 19:58:07,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:58:07,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047667998] [2023-12-20 19:58:07,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:58:07,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:58:07,177 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:58:07,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [927232344] [2023-12-20 19:58:07,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:58:07,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:58:07,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:58:07,192 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) [2023-12-20 19:58:07,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 19:58:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:58:07,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 19:58:07,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:58:07,865 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 12759 proven. 117 refuted. 0 times theorem prover too weak. 15684 trivial. 0 not checked. [2023-12-20 19:58:07,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 19:58:08,238 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 240 proven. 117 refuted. 0 times theorem prover too weak. 28203 trivial. 0 not checked. [2023-12-20 19:58:08,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:58:08,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047667998] [2023-12-20 19:58:08,239 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:58:08,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927232344] [2023-12-20 19:58:08,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927232344] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 19:58:08,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 19:58:08,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-20 19:58:08,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323042416] [2023-12-20 19:58:08,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 19:58:08,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 19:58:08,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:58:08,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 19:58:08,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 19:58:08,241 INFO L87 Difference]: Start difference. First operand 2991 states and 4866 transitions. Second operand has 8 states, 8 states have (on average 29.5) internal successors, (236), 8 states have internal predecessors, (236), 3 states have call successors, (159), 2 states have call predecessors, (159), 4 states have return successors, (160), 3 states have call predecessors, (160), 3 states have call successors, (160) [2023-12-20 19:58:08,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:58:08,777 INFO L93 Difference]: Finished difference Result 5909 states and 9561 transitions. [2023-12-20 19:58:08,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 19:58:08,778 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 29.5) internal successors, (236), 8 states have internal predecessors, (236), 3 states have call successors, (159), 2 states have call predecessors, (159), 4 states have return successors, (160), 3 states have call predecessors, (160), 3 states have call successors, (160) Word has length 749 [2023-12-20 19:58:08,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:58:08,785 INFO L225 Difference]: With dead ends: 5909 [2023-12-20 19:58:08,785 INFO L226 Difference]: Without dead ends: 3083 [2023-12-20 19:58:08,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1500 GetRequests, 1490 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-20 19:58:08,791 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 294 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 19:58:08,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 960 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 19:58:08,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3083 states. [2023-12-20 19:58:08,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3083 to 3019. [2023-12-20 19:58:08,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3019 states, 2099 states have (on average 1.490709861838971) internal successors, (3129), 2118 states have internal predecessors, (3129), 871 states have call successors, (871), 48 states have call predecessors, (871), 48 states have return successors, (871), 852 states have call predecessors, (871), 871 states have call successors, (871) [2023-12-20 19:58:08,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3019 states to 3019 states and 4871 transitions. [2023-12-20 19:58:08,994 INFO L78 Accepts]: Start accepts. Automaton has 3019 states and 4871 transitions. Word has length 749 [2023-12-20 19:58:08,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:58:08,994 INFO L495 AbstractCegarLoop]: Abstraction has 3019 states and 4871 transitions. [2023-12-20 19:58:08,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.5) internal successors, (236), 8 states have internal predecessors, (236), 3 states have call successors, (159), 2 states have call predecessors, (159), 4 states have return successors, (160), 3 states have call predecessors, (160), 3 states have call successors, (160) [2023-12-20 19:58:08,995 INFO L276 IsEmpty]: Start isEmpty. Operand 3019 states and 4871 transitions. [2023-12-20 19:58:09,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2023-12-20 19:58:09,001 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:58:09,001 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:58:09,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-20 19:58:09,208 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 [2023-12-20 19:58:09,209 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:58:09,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:58:09,210 INFO L85 PathProgramCache]: Analyzing trace with hash -250510084, now seen corresponding path program 1 times [2023-12-20 19:58:09,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:58:09,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18718162] [2023-12-20 19:58:09,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:58:09,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:58:09,257 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:58:09,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1716227254] [2023-12-20 19:58:09,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:58:09,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:58:09,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:58:09,258 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) [2023-12-20 19:58:09,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 19:58:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:58:09,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 1649 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 19:58:09,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:58:09,820 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 10493 proven. 84 refuted. 0 times theorem prover too weak. 17983 trivial. 0 not checked. [2023-12-20 19:58:09,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 19:58:10,153 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 273 proven. 84 refuted. 0 times theorem prover too weak. 28203 trivial. 0 not checked. [2023-12-20 19:58:10,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:58:10,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18718162] [2023-12-20 19:58:10,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:58:10,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716227254] [2023-12-20 19:58:10,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716227254] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 19:58:10,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 19:58:10,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-20 19:58:10,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548001910] [2023-12-20 19:58:10,154 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 19:58:10,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 19:58:10,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:58:10,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 19:58:10,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 19:58:10,156 INFO L87 Difference]: Start difference. First operand 3019 states and 4871 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (148), 2 states have call predecessors, (148), 4 states have return successors, (149), 2 states have call predecessors, (149), 2 states have call successors, (149) [2023-12-20 19:58:10,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:58:10,847 INFO L93 Difference]: Finished difference Result 5957 states and 9567 transitions. [2023-12-20 19:58:10,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 19:58:10,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (148), 2 states have call predecessors, (148), 4 states have return successors, (149), 2 states have call predecessors, (149), 2 states have call successors, (149) Word has length 750 [2023-12-20 19:58:10,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:58:10,857 INFO L225 Difference]: With dead ends: 5957 [2023-12-20 19:58:10,857 INFO L226 Difference]: Without dead ends: 3107 [2023-12-20 19:58:10,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1502 GetRequests, 1492 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-20 19:58:10,864 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 520 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 19:58:10,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 953 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 19:58:10,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3107 states. [2023-12-20 19:58:11,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3107 to 3035. [2023-12-20 19:58:11,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3035 states, 2111 states have (on average 1.4803410705826623) internal successors, (3125), 2130 states have internal predecessors, (3125), 871 states have call successors, (871), 52 states have call predecessors, (871), 52 states have return successors, (871), 852 states have call predecessors, (871), 871 states have call successors, (871) [2023-12-20 19:58:11,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3035 states to 3035 states and 4867 transitions. [2023-12-20 19:58:11,055 INFO L78 Accepts]: Start accepts. Automaton has 3035 states and 4867 transitions. Word has length 750 [2023-12-20 19:58:11,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:58:11,056 INFO L495 AbstractCegarLoop]: Abstraction has 3035 states and 4867 transitions. [2023-12-20 19:58:11,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (148), 2 states have call predecessors, (148), 4 states have return successors, (149), 2 states have call predecessors, (149), 2 states have call successors, (149) [2023-12-20 19:58:11,057 INFO L276 IsEmpty]: Start isEmpty. Operand 3035 states and 4867 transitions. [2023-12-20 19:58:11,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2023-12-20 19:58:11,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:58:11,063 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:58:11,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-20 19:58:11,271 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 [2023-12-20 19:58:11,272 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:58:11,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:58:11,272 INFO L85 PathProgramCache]: Analyzing trace with hash -759983174, now seen corresponding path program 1 times [2023-12-20 19:58:11,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:58:11,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190980692] [2023-12-20 19:58:11,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:58:11,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:58:11,329 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:58:11,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [728791453] [2023-12-20 19:58:11,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:58:11,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:58:11,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:58:11,331 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 19:58:11,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 19:58:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:58:11,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-20 19:58:11,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:58:12,906 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 13749 proven. 216 refuted. 0 times theorem prover too weak. 14595 trivial. 0 not checked. [2023-12-20 19:58:12,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 19:58:13,736 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 141 proven. 216 refuted. 0 times theorem prover too weak. 28203 trivial. 0 not checked. [2023-12-20 19:58:13,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:58:13,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190980692] [2023-12-20 19:58:13,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:58:13,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728791453] [2023-12-20 19:58:13,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728791453] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 19:58:13,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 19:58:13,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 11 [2023-12-20 19:58:13,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897400932] [2023-12-20 19:58:13,737 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 19:58:13,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-20 19:58:13,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:58:13,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-20 19:58:13,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2023-12-20 19:58:13,739 INFO L87 Difference]: Start difference. First operand 3035 states and 4867 transitions. Second operand has 11 states, 11 states have (on average 22.727272727272727) internal successors, (250), 11 states have internal predecessors, (250), 4 states have call successors, (240), 3 states have call predecessors, (240), 5 states have return successors, (240), 4 states have call predecessors, (240), 4 states have call successors, (240) [2023-12-20 19:58:16,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:58:16,600 INFO L93 Difference]: Finished difference Result 15505 states and 24737 transitions. [2023-12-20 19:58:16,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-20 19:58:16,600 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 22.727272727272727) internal successors, (250), 11 states have internal predecessors, (250), 4 states have call successors, (240), 3 states have call predecessors, (240), 5 states have return successors, (240), 4 states have call predecessors, (240), 4 states have call successors, (240) Word has length 750 [2023-12-20 19:58:16,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:58:16,630 INFO L225 Difference]: With dead ends: 15505 [2023-12-20 19:58:16,630 INFO L226 Difference]: Without dead ends: 12643 [2023-12-20 19:58:16,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1508 GetRequests, 1491 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=152, Invalid=190, Unknown=0, NotChecked=0, Total=342 [2023-12-20 19:58:16,639 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 1328 mSDsluCounter, 2788 mSDsCounter, 0 mSdLazyCounter, 2461 mSolverCounterSat, 549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 3215 SdHoareTripleChecker+Invalid, 3010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 549 IncrementalHoareTripleChecker+Valid, 2461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 19:58:16,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 3215 Invalid, 3010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [549 Valid, 2461 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 19:58:16,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12643 states. [2023-12-20 19:58:17,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12643 to 9175. [2023-12-20 19:58:17,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9175 states, 6732 states have (on average 1.5062388591800357) internal successors, (10140), 6795 states have internal predecessors, (10140), 2295 states have call successors, (2295), 147 states have call predecessors, (2295), 147 states have return successors, (2295), 2232 states have call predecessors, (2295), 2295 states have call successors, (2295) [2023-12-20 19:58:17,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9175 states to 9175 states and 14730 transitions. [2023-12-20 19:58:17,377 INFO L78 Accepts]: Start accepts. Automaton has 9175 states and 14730 transitions. Word has length 750 [2023-12-20 19:58:17,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:58:17,378 INFO L495 AbstractCegarLoop]: Abstraction has 9175 states and 14730 transitions. [2023-12-20 19:58:17,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.727272727272727) internal successors, (250), 11 states have internal predecessors, (250), 4 states have call successors, (240), 3 states have call predecessors, (240), 5 states have return successors, (240), 4 states have call predecessors, (240), 4 states have call successors, (240) [2023-12-20 19:58:17,378 INFO L276 IsEmpty]: Start isEmpty. Operand 9175 states and 14730 transitions. [2023-12-20 19:58:17,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2023-12-20 19:58:17,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:58:17,387 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:58:17,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-20 19:58:17,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-20 19:58:17,595 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:58:17,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:58:17,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1012821510, now seen corresponding path program 1 times [2023-12-20 19:58:17,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:58:17,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985099665] [2023-12-20 19:58:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:58:17,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:58:17,635 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:58:17,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [478272918] [2023-12-20 19:58:17,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:58:17,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:58:17,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:58:17,636 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 19:58:17,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-20 19:58:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:58:18,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 1650 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-20 19:58:18,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:58:18,157 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-20 19:58:18,158 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:58:18,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:58:18,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985099665] [2023-12-20 19:58:18,158 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:58:18,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478272918] [2023-12-20 19:58:18,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478272918] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:58:18,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:58:18,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 19:58:18,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521573914] [2023-12-20 19:58:18,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:58:18,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 19:58:18,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:58:18,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 19:58:18,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 19:58:18,160 INFO L87 Difference]: Start difference. First operand 9175 states and 14730 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 19:58:20,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:58:20,175 INFO L93 Difference]: Finished difference Result 36397 states and 58369 transitions. [2023-12-20 19:58:20,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 19:58:20,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 750 [2023-12-20 19:58:20,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:58:20,237 INFO L225 Difference]: With dead ends: 36397 [2023-12-20 19:58:20,238 INFO L226 Difference]: Without dead ends: 25607 [2023-12-20 19:58:20,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 747 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 19:58:20,260 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 1464 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 19:58:20,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 1892 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 19:58:20,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25607 states. [2023-12-20 19:58:21,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25607 to 14215. [2023-12-20 19:58:21,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14215 states, 10262 states have (on average 1.4776846618592867) internal successors, (15164), 10370 states have internal predecessors, (15164), 3709 states have call successors, (3709), 243 states have call predecessors, (3709), 243 states have return successors, (3709), 3601 states have call predecessors, (3709), 3709 states have call successors, (3709) [2023-12-20 19:58:21,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14215 states to 14215 states and 22582 transitions. [2023-12-20 19:58:21,795 INFO L78 Accepts]: Start accepts. Automaton has 14215 states and 22582 transitions. Word has length 750 [2023-12-20 19:58:21,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:58:21,796 INFO L495 AbstractCegarLoop]: Abstraction has 14215 states and 22582 transitions. [2023-12-20 19:58:21,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 19:58:21,796 INFO L276 IsEmpty]: Start isEmpty. Operand 14215 states and 22582 transitions. [2023-12-20 19:58:21,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2023-12-20 19:58:21,807 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:58:21,807 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:58:21,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-20 19:58:22,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-20 19:58:22,016 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:58:22,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:58:22,016 INFO L85 PathProgramCache]: Analyzing trace with hash -568920836, now seen corresponding path program 1 times [2023-12-20 19:58:22,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:58:22,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140922796] [2023-12-20 19:58:22,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:58:22,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:58:22,063 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:58:22,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614661787] [2023-12-20 19:58:22,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:58:22,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:58:22,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:58:22,065 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 19:58:22,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-20 19:58:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:58:22,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 1649 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-20 19:58:22,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:58:23,099 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-20 19:58:23,100 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:58:23,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:58:23,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140922796] [2023-12-20 19:58:23,100 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:58:23,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614661787] [2023-12-20 19:58:23,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614661787] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:58:23,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:58:23,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 19:58:23,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016118772] [2023-12-20 19:58:23,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:58:23,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 19:58:23,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:58:23,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 19:58:23,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 19:58:23,102 INFO L87 Difference]: Start difference. First operand 14215 states and 22582 transitions. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 19:58:25,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:58:25,598 INFO L93 Difference]: Finished difference Result 39416 states and 62692 transitions. [2023-12-20 19:58:25,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 19:58:25,599 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 750 [2023-12-20 19:58:25,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:58:25,660 INFO L225 Difference]: With dead ends: 39416 [2023-12-20 19:58:25,660 INFO L226 Difference]: Without dead ends: 25382 [2023-12-20 19:58:25,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 745 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-20 19:58:25,687 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 1108 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 966 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 966 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 19:58:25,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 2245 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [966 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 19:58:25,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25382 states. [2023-12-20 19:58:27,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25382 to 24935. [2023-12-20 19:58:27,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24935 states, 18337 states have (on average 1.4897202377706278) internal successors, (27317), 18524 states have internal predecessors, (27317), 6189 states have call successors, (6189), 408 states have call predecessors, (6189), 408 states have return successors, (6189), 6002 states have call predecessors, (6189), 6189 states have call successors, (6189) [2023-12-20 19:58:28,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24935 states to 24935 states and 39695 transitions. [2023-12-20 19:58:28,086 INFO L78 Accepts]: Start accepts. Automaton has 24935 states and 39695 transitions. Word has length 750 [2023-12-20 19:58:28,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:58:28,087 INFO L495 AbstractCegarLoop]: Abstraction has 24935 states and 39695 transitions. [2023-12-20 19:58:28,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-20 19:58:28,087 INFO L276 IsEmpty]: Start isEmpty. Operand 24935 states and 39695 transitions. [2023-12-20 19:58:28,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2023-12-20 19:58:28,097 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:58:28,097 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:58:28,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-20 19:58:28,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-20 19:58:28,305 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:58:28,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:58:28,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1731901754, now seen corresponding path program 1 times [2023-12-20 19:58:28,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:58:28,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926036702] [2023-12-20 19:58:28,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:58:28,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:58:28,349 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:58:28,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [123906739] [2023-12-20 19:58:28,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:58:28,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:58:28,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:58:28,351 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 19:58:28,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-20 19:58:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:58:28,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 1650 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-20 19:58:28,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:58:31,298 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 19533 proven. 816 refuted. 0 times theorem prover too weak. 8211 trivial. 0 not checked. [2023-12-20 19:58:31,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 19:58:31,694 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 222 proven. 135 refuted. 0 times theorem prover too weak. 28203 trivial. 0 not checked. [2023-12-20 19:58:31,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:58:31,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926036702] [2023-12-20 19:58:31,694 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:58:31,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123906739] [2023-12-20 19:58:31,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123906739] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 19:58:31,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 19:58:31,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 7] total 24 [2023-12-20 19:58:31,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203830731] [2023-12-20 19:58:31,695 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 19:58:31,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-20 19:58:31,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:58:31,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-20 19:58:31,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2023-12-20 19:58:31,697 INFO L87 Difference]: Start difference. First operand 24935 states and 39695 transitions. Second operand has 24 states, 24 states have (on average 10.291666666666666) internal successors, (247), 22 states have internal predecessors, (247), 7 states have call successors, (196), 6 states have call predecessors, (196), 10 states have return successors, (197), 7 states have call predecessors, (197), 7 states have call successors, (197) [2023-12-20 19:58:45,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:58:45,823 INFO L93 Difference]: Finished difference Result 119341 states and 184790 transitions. [2023-12-20 19:58:45,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-12-20 19:58:45,824 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.291666666666666) internal successors, (247), 22 states have internal predecessors, (247), 7 states have call successors, (196), 6 states have call predecessors, (196), 10 states have return successors, (197), 7 states have call predecessors, (197), 7 states have call successors, (197) Word has length 750 [2023-12-20 19:58:45,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:58:46,097 INFO L225 Difference]: With dead ends: 119341 [2023-12-20 19:58:46,098 INFO L226 Difference]: Without dead ends: 94587 [2023-12-20 19:58:46,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1581 GetRequests, 1481 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3671 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2247, Invalid=8055, Unknown=0, NotChecked=0, Total=10302 [2023-12-20 19:58:46,183 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 2329 mSDsluCounter, 2781 mSDsCounter, 0 mSdLazyCounter, 3746 mSolverCounterSat, 1504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2373 SdHoareTripleChecker+Valid, 3397 SdHoareTripleChecker+Invalid, 5250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1504 IncrementalHoareTripleChecker+Valid, 3746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 19:58:46,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2373 Valid, 3397 Invalid, 5250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1504 Valid, 3746 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 19:58:46,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94587 states. [2023-12-20 19:58:52,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94587 to 47435. [2023-12-20 19:58:52,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47435 states, 35103 states have (on average 1.4660000569751872) internal successors, (51461), 35422 states have internal predecessors, (51461), 10989 states have call successors, (10989), 1342 states have call predecessors, (10989), 1342 states have return successors, (10989), 10670 states have call predecessors, (10989), 10989 states have call successors, (10989) [2023-12-20 19:58:52,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47435 states to 47435 states and 73439 transitions. [2023-12-20 19:58:52,354 INFO L78 Accepts]: Start accepts. Automaton has 47435 states and 73439 transitions. Word has length 750 [2023-12-20 19:58:52,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:58:52,354 INFO L495 AbstractCegarLoop]: Abstraction has 47435 states and 73439 transitions. [2023-12-20 19:58:52,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.291666666666666) internal successors, (247), 22 states have internal predecessors, (247), 7 states have call successors, (196), 6 states have call predecessors, (196), 10 states have return successors, (197), 7 states have call predecessors, (197), 7 states have call successors, (197) [2023-12-20 19:58:52,355 INFO L276 IsEmpty]: Start isEmpty. Operand 47435 states and 73439 transitions. [2023-12-20 19:58:52,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2023-12-20 19:58:52,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:58:52,370 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:58:52,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-20 19:58:52,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-20 19:58:52,579 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:58:52,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:58:52,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1887038412, now seen corresponding path program 1 times [2023-12-20 19:58:52,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:58:52,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935235114] [2023-12-20 19:58:52,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:58:52,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:58:52,634 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:58:52,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755789732] [2023-12-20 19:58:52,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:58:52,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:58:52,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:58:52,636 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 19:58:52,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-20 19:58:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:58:53,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-20 19:58:53,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:58:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 18339 proven. 648 refuted. 0 times theorem prover too weak. 9573 trivial. 0 not checked. [2023-12-20 19:58:55,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 19:58:59,532 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 594 proven. 468 refuted. 0 times theorem prover too weak. 27498 trivial. 0 not checked. [2023-12-20 19:58:59,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:58:59,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935235114] [2023-12-20 19:58:59,533 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:58:59,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755789732] [2023-12-20 19:58:59,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755789732] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 19:58:59,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 19:58:59,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 29 [2023-12-20 19:58:59,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494640560] [2023-12-20 19:58:59,533 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 19:58:59,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 19:58:59,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:58:59,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 19:58:59,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=578, Unknown=0, NotChecked=0, Total=812 [2023-12-20 19:58:59,536 INFO L87 Difference]: Start difference. First operand 47435 states and 73439 transitions. Second operand has 29 states, 28 states have (on average 10.607142857142858) internal successors, (297), 27 states have internal predecessors, (297), 9 states have call successors, (240), 6 states have call predecessors, (240), 12 states have return successors, (240), 9 states have call predecessors, (240), 9 states have call successors, (240) [2023-12-20 19:59:34,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:59:34,547 INFO L93 Difference]: Finished difference Result 242181 states and 370054 transitions. [2023-12-20 19:59:34,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2023-12-20 19:59:34,547 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 10.607142857142858) internal successors, (297), 27 states have internal predecessors, (297), 9 states have call successors, (240), 6 states have call predecessors, (240), 12 states have return successors, (240), 9 states have call predecessors, (240), 9 states have call successors, (240) Word has length 750 [2023-12-20 19:59:34,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:59:35,252 INFO L225 Difference]: With dead ends: 242181 [2023-12-20 19:59:35,252 INFO L226 Difference]: Without dead ends: 219125 [2023-12-20 19:59:35,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1638 GetRequests, 1499 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7944 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=5237, Invalid=14503, Unknown=0, NotChecked=0, Total=19740 [2023-12-20 19:59:35,341 INFO L413 NwaCegarLoop]: 842 mSDtfsCounter, 4091 mSDsluCounter, 6877 mSDsCounter, 0 mSdLazyCounter, 8147 mSolverCounterSat, 2651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4209 SdHoareTripleChecker+Valid, 7719 SdHoareTripleChecker+Invalid, 10798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2651 IncrementalHoareTripleChecker+Valid, 8147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-20 19:59:35,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4209 Valid, 7719 Invalid, 10798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2651 Valid, 8147 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-20 19:59:35,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219125 states. [2023-12-20 19:59:46,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219125 to 63543. [2023-12-20 19:59:46,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63543 states, 47166 states have (on average 1.4530806089132002) internal successors, (68536), 47647 states have internal predecessors, (68536), 14538 states have call successors, (14538), 1838 states have call predecessors, (14538), 1838 states have return successors, (14538), 14057 states have call predecessors, (14538), 14538 states have call successors, (14538) [2023-12-20 19:59:46,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63543 states to 63543 states and 97612 transitions. [2023-12-20 19:59:46,580 INFO L78 Accepts]: Start accepts. Automaton has 63543 states and 97612 transitions. Word has length 750 [2023-12-20 19:59:46,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:59:46,581 INFO L495 AbstractCegarLoop]: Abstraction has 63543 states and 97612 transitions. [2023-12-20 19:59:46,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 10.607142857142858) internal successors, (297), 27 states have internal predecessors, (297), 9 states have call successors, (240), 6 states have call predecessors, (240), 12 states have return successors, (240), 9 states have call predecessors, (240), 9 states have call successors, (240) [2023-12-20 19:59:46,581 INFO L276 IsEmpty]: Start isEmpty. Operand 63543 states and 97612 transitions. [2023-12-20 19:59:46,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-12-20 19:59:46,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:59:46,599 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:59:46,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-20 19:59:46,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:59:46,804 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:59:46,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:59:46,804 INFO L85 PathProgramCache]: Analyzing trace with hash -121301853, now seen corresponding path program 1 times [2023-12-20 19:59:46,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:59:46,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554561961] [2023-12-20 19:59:46,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:59:46,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:59:46,845 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:59:46,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [160150732] [2023-12-20 19:59:46,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:59:46,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:59:46,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:59:46,846 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 19:59:46,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-20 19:59:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:59:47,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 19:59:47,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:59:50,796 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 15207 proven. 945 refuted. 0 times theorem prover too weak. 12408 trivial. 0 not checked. [2023-12-20 19:59:50,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 19:59:52,533 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 315 proven. 747 refuted. 0 times theorem prover too weak. 27498 trivial. 0 not checked. [2023-12-20 19:59:52,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:59:52,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554561961] [2023-12-20 19:59:52,534 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:59:52,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160150732] [2023-12-20 19:59:52,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160150732] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 19:59:52,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 19:59:52,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 31 [2023-12-20 19:59:52,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513642739] [2023-12-20 19:59:52,534 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 19:59:52,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-20 19:59:52,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:59:52,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-20 19:59:52,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=708, Unknown=0, NotChecked=0, Total=930 [2023-12-20 19:59:52,537 INFO L87 Difference]: Start difference. First operand 63543 states and 97612 transitions. Second operand has 31 states, 30 states have (on average 9.266666666666667) internal successors, (278), 29 states have internal predecessors, (278), 10 states have call successors, (240), 6 states have call predecessors, (240), 12 states have return successors, (240), 10 states have call predecessors, (240), 10 states have call successors, (240) [2023-12-20 20:00:34,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:00:34,064 INFO L93 Difference]: Finished difference Result 210471 states and 321998 transitions. [2023-12-20 20:00:34,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2023-12-20 20:00:34,064 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 9.266666666666667) internal successors, (278), 29 states have internal predecessors, (278), 10 states have call successors, (240), 6 states have call predecessors, (240), 12 states have return successors, (240), 10 states have call predecessors, (240), 10 states have call successors, (240) Word has length 751 [2023-12-20 20:00:34,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:00:34,376 INFO L225 Difference]: With dead ends: 210471 [2023-12-20 20:00:34,376 INFO L226 Difference]: Without dead ends: 147159 [2023-12-20 20:00:34,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1643 GetRequests, 1493 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9730 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=5290, Invalid=17662, Unknown=0, NotChecked=0, Total=22952 [2023-12-20 20:00:34,653 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 7319 mSDsluCounter, 7540 mSDsCounter, 0 mSdLazyCounter, 8166 mSolverCounterSat, 4587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7321 SdHoareTripleChecker+Valid, 8186 SdHoareTripleChecker+Invalid, 12753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4587 IncrementalHoareTripleChecker+Valid, 8166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-12-20 20:00:34,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7321 Valid, 8186 Invalid, 12753 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4587 Valid, 8166 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-12-20 20:00:34,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147159 states. [2023-12-20 20:00:51,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147159 to 81965. [2023-12-20 20:00:51,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81965 states, 60236 states have (on average 1.4276512384620492) internal successors, (85996), 60852 states have internal predecessors, (85996), 18896 states have call successors, (18896), 2832 states have call predecessors, (18896), 2832 states have return successors, (18896), 18280 states have call predecessors, (18896), 18896 states have call successors, (18896) [2023-12-20 20:00:51,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81965 states to 81965 states and 123788 transitions. [2023-12-20 20:00:51,612 INFO L78 Accepts]: Start accepts. Automaton has 81965 states and 123788 transitions. Word has length 751 [2023-12-20 20:00:51,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:00:51,612 INFO L495 AbstractCegarLoop]: Abstraction has 81965 states and 123788 transitions. [2023-12-20 20:00:51,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 9.266666666666667) internal successors, (278), 29 states have internal predecessors, (278), 10 states have call successors, (240), 6 states have call predecessors, (240), 12 states have return successors, (240), 10 states have call predecessors, (240), 10 states have call successors, (240) [2023-12-20 20:00:51,613 INFO L276 IsEmpty]: Start isEmpty. Operand 81965 states and 123788 transitions. [2023-12-20 20:00:51,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2023-12-20 20:00:51,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:00:51,629 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:00:51,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-20 20:00:51,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:00:51,830 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:00:51,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:00:51,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1742462470, now seen corresponding path program 1 times [2023-12-20 20:00:51,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:00:51,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759879410] [2023-12-20 20:00:51,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:00:51,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:00:51,881 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:00:51,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [414247713] [2023-12-20 20:00:51,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:00:51,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:00:51,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:00:51,883 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 20:00:51,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-20 20:00:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:00:52,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 1652 conjuncts, 97 conjunts are in the unsatisfiable core [2023-12-20 20:00:52,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:02:18,163 WARN L293 SmtUtils]: Spent 21.83s on a formula simplification. DAG size of input: 112 DAG size of output: 112 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 20:03:13,857 WARN L293 SmtUtils]: Spent 29.14s on a formula simplification that was a NOOP. DAG size: 112 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 20:04:12,193 WARN L293 SmtUtils]: Spent 31.97s on a formula simplification that was a NOOP. DAG size: 116 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 20:04:43,569 WARN L293 SmtUtils]: Spent 19.47s on a formula simplification that was a NOOP. DAG size: 108 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 20:05:29,823 WARN L293 SmtUtils]: Spent 14.35s on a formula simplification. DAG size of input: 110 DAG size of output: 98 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 20:05:32,245 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 20329 proven. 2199 refuted. 0 times theorem prover too weak. 6032 trivial. 0 not checked. [2023-12-20 20:05:32,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:07:23,781 WARN L293 SmtUtils]: Spent 7.41s on a formula simplification. DAG size of input: 138 DAG size of output: 107 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 20:09:57,554 WARN L293 SmtUtils]: Spent 49.95s on a formula simplification that was a NOOP. DAG size: 153 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-20 20:11:59,735 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 20:11:59,735 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 20:11:59,945 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 20:11:59,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-20 20:12:00,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:12:00,155 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 753 with TraceHistMax 120,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-11-5-3-5-3-1 context. [2023-12-20 20:12:00,158 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:12:00,160 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 20:12:00,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 08:12:00 BoogieIcfgContainer [2023-12-20 20:12:00,161 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 20:12:00,162 INFO L158 Benchmark]: Toolchain (without parser) took 850451.97ms. Allocated memory was 296.7MB in the beginning and 4.1GB in the end (delta: 3.8GB). Free memory was 234.4MB in the beginning and 1.3GB in the end (delta: -1.0GB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. [2023-12-20 20:12:00,162 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 197.1MB. Free memory is still 145.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 20:12:00,162 INFO L158 Benchmark]: CACSL2BoogieTranslator took 471.95ms. Allocated memory is still 296.7MB. Free memory was 234.4MB in the beginning and 257.0MB in the end (delta: -22.6MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. [2023-12-20 20:12:00,162 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.89ms. Allocated memory is still 296.7MB. Free memory was 256.5MB in the beginning and 243.4MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-20 20:12:00,162 INFO L158 Benchmark]: Boogie Preprocessor took 128.16ms. Allocated memory is still 296.7MB. Free memory was 243.4MB in the beginning and 229.2MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-20 20:12:00,163 INFO L158 Benchmark]: RCFGBuilder took 879.65ms. Allocated memory is still 296.7MB. Free memory was 229.2MB in the beginning and 230.9MB in the end (delta: -1.7MB). Peak memory consumption was 72.2MB. Max. memory is 8.0GB. [2023-12-20 20:12:00,163 INFO L158 Benchmark]: TraceAbstraction took 848875.12ms. Allocated memory was 296.7MB in the beginning and 4.1GB in the end (delta: 3.8GB). Free memory was 229.9MB in the beginning and 1.3GB in the end (delta: -1.0GB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. [2023-12-20 20:12:00,164 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 197.1MB. Free memory is still 145.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 471.95ms. Allocated memory is still 296.7MB. Free memory was 234.4MB in the beginning and 257.0MB in the end (delta: -22.6MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 91.89ms. Allocated memory is still 296.7MB. Free memory was 256.5MB in the beginning and 243.4MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 128.16ms. Allocated memory is still 296.7MB. Free memory was 243.4MB in the beginning and 229.2MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * RCFGBuilder took 879.65ms. Allocated memory is still 296.7MB. Free memory was 229.2MB in the beginning and 230.9MB in the end (delta: -1.7MB). Peak memory consumption was 72.2MB. Max. memory is 8.0GB. * TraceAbstraction took 848875.12ms. Allocated memory was 296.7MB in the beginning and 4.1GB in the end (delta: 3.8GB). Free memory was 229.9MB in the beginning and 1.3GB in the end (delta: -1.0GB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 753 with TraceHistMax 120,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-11-5-3-5-3-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 317 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 848.8s, OverallIterations: 21, TraceHistogramMax: 120, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 104.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23578 SdHoareTripleChecker+Valid, 23.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22900 mSDsluCounter, 43918 SdHoareTripleChecker+Invalid, 19.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31977 mSDsCounter, 11474 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27576 IncrementalHoareTripleChecker+Invalid, 39050 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11474 mSolverCounterUnsat, 11941 mSDtfsCounter, 27576 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21352 GetRequests, 20875 SyntacticMatches, 3 SemanticMatches, 474 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21472 ImplicationChecksByTransitivity, 10.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81965occurred in iteration=20, InterpolantAutomatonStates: 436, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 40.6s AutomataMinimizationTime, 20 MinimizatonAttempts, 287174 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.3s SsaConstructionTime, 3.7s SatisfiabilityAnalysisTime, 21.7s InterpolantComputationTime, 15724 NumberOfCodeBlocks, 15724 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 20947 ConstructedInterpolants, 0 QuantifiedInterpolants, 76446 SizeOfPredicates, 66 NumberOfNonLiveVariables, 32985 ConjunctsInSsa, 166 ConjunctsInUnsatCore, 28 InterpolantComputations, 12 PerfectInterpolantSequences, 794733/799680 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown