/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-10.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 02:56:29,332 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 02:56:29,413 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 02:56:29,417 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 02:56:29,418 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 02:56:29,446 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 02:56:29,447 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 02:56:29,447 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 02:56:29,448 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 02:56:29,451 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 02:56:29,452 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 02:56:29,452 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 02:56:29,453 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 02:56:29,454 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 02:56:29,454 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 02:56:29,454 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 02:56:29,455 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 02:56:29,455 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 02:56:29,455 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 02:56:29,456 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 02:56:29,456 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 02:56:29,457 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 02:56:29,457 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 02:56:29,457 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 02:56:29,457 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 02:56:29,457 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 02:56:29,457 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 02:56:29,458 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 02:56:29,458 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 02:56:29,458 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 02:56:29,459 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 02:56:29,459 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 02:56:29,460 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:56:29,460 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 02:56:29,460 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 02:56:29,460 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 02:56:29,460 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 02:56:29,460 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 02:56:29,460 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 02:56:29,461 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 02:56:29,461 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 02:56:29,461 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 02:56:29,461 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 02:56:29,461 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 02:56:29,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 02:56:29,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 02:56:29,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 02:56:29,723 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 02:56:29,723 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 02:56:29,724 INFO L431 ainManager$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-10.i [2023-12-16 02:56:30,887 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 02:56:31,203 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 02:56:31,203 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-10.i [2023-12-16 02:56:31,227 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07016ea6c/ab1ae30f30ee413b8b08c22362151545/FLAGed277660b [2023-12-16 02:56:31,242 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07016ea6c/ab1ae30f30ee413b8b08c22362151545 [2023-12-16 02:56:31,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 02:56:31,246 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 02:56:31,248 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 02:56:31,248 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 02:56:31,252 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 02:56:31,253 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:56:31" (1/1) ... [2023-12-16 02:56:31,254 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1938ea00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:31, skipping insertion in model container [2023-12-16 02:56:31,254 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:56:31" (1/1) ... [2023-12-16 02:56:31,307 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 02:56:31,450 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-10.i[916,929] [2023-12-16 02:56:31,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:56:31,639 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 02:56:31,650 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-10.i[916,929] [2023-12-16 02:56:31,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:56:31,806 INFO L206 MainTranslator]: Completed translation [2023-12-16 02:56:31,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:31 WrapperNode [2023-12-16 02:56:31,807 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 02:56:31,808 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 02:56:31,808 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 02:56:31,808 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 02:56:31,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:31" (1/1) ... [2023-12-16 02:56:31,843 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:31" (1/1) ... [2023-12-16 02:56:31,943 INFO L138 Inliner]: procedures = 26, calls = 111, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 749 [2023-12-16 02:56:31,943 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 02:56:31,944 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 02:56:31,944 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 02:56:31,944 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 02:56:31,955 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:31" (1/1) ... [2023-12-16 02:56:31,955 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:31" (1/1) ... [2023-12-16 02:56:32,008 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:31" (1/1) ... [2023-12-16 02:56:32,051 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]. [2023-12-16 02:56:32,051 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:31" (1/1) ... [2023-12-16 02:56:32,052 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:31" (1/1) ... [2023-12-16 02:56:32,069 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:31" (1/1) ... [2023-12-16 02:56:32,074 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:31" (1/1) ... [2023-12-16 02:56:32,096 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:31" (1/1) ... [2023-12-16 02:56:32,105 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:31" (1/1) ... [2023-12-16 02:56:32,119 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 02:56:32,120 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 02:56:32,120 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 02:56:32,120 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 02:56:32,121 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:31" (1/1) ... [2023-12-16 02:56:32,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:56:32,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:32,153 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) [2023-12-16 02:56:32,178 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 [2023-12-16 02:56:32,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 02:56:32,186 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 02:56:32,187 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 02:56:32,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 02:56:32,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 02:56:32,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 02:56:32,334 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 02:56:32,336 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 02:56:33,242 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 02:56:33,312 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 02:56:33,312 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 02:56:33,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:56:33 BoogieIcfgContainer [2023-12-16 02:56:33,313 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 02:56:33,314 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 02:56:33,315 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 02:56:33,317 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 02:56:33,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:56:31" (1/3) ... [2023-12-16 02:56:33,319 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da424ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:56:33, skipping insertion in model container [2023-12-16 02:56:33,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:31" (2/3) ... [2023-12-16 02:56:33,320 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da424ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:56:33, skipping insertion in model container [2023-12-16 02:56:33,320 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:56:33" (3/3) ... [2023-12-16 02:56:33,322 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-10.i [2023-12-16 02:56:33,338 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 02:56:33,339 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 02:56:33,399 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 02:56:33,406 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;@1e4f7f4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 02:56:33,406 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 02:56:33,413 INFO L276 IsEmpty]: Start isEmpty. Operand has 305 states, 204 states have (on average 1.5980392156862746) internal successors, (326), 205 states have internal predecessors, (326), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-16 02:56:33,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-12-16 02:56:33,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:33,471 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:33,472 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:33,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:33,478 INFO L85 PathProgramCache]: Analyzing trace with hash 863121736, now seen corresponding path program 1 times [2023-12-16 02:56:33,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:33,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644284680] [2023-12-16 02:56:33,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:33,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:33,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:33,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644284680] [2023-12-16 02:56:33,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 02:56:33,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674079513] [2023-12-16 02:56:33,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:33,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:33,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:33,838 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) [2023-12-16 02:56:33,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 02:56:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:34,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 02:56:34,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:34,338 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 18818 trivial. 0 not checked. [2023-12-16 02:56:34,338 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:56:34,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674079513] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:56:34,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:56:34,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:56:34,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081911809] [2023-12-16 02:56:34,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:56:34,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 02:56:34,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:34,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 02:56:34,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:56:34,372 INFO L87 Difference]: Start difference. First operand has 305 states, 204 states have (on average 1.5980392156862746) internal successors, (326), 205 states have internal predecessors, (326), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 2 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 2 states have call successors, (98) [2023-12-16 02:56:34,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:34,459 INFO L93 Difference]: Finished difference Result 606 states and 1138 transitions. [2023-12-16 02:56:34,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 02:56:34,462 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 2 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 2 states have call successors, (98) Word has length 640 [2023-12-16 02:56:34,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:34,476 INFO L225 Difference]: With dead ends: 606 [2023-12-16 02:56:34,476 INFO L226 Difference]: Without dead ends: 302 [2023-12-16 02:56:34,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:56:34,487 INFO L413 NwaCegarLoop]: 510 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, 510 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 [2023-12-16 02:56:34,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 510 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:56:34,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-12-16 02:56:34,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2023-12-16 02:56:34,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 202 states have (on average 1.5693069306930694) internal successors, (317), 202 states have internal predecessors, (317), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-16 02:56:34,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 513 transitions. [2023-12-16 02:56:34,587 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 513 transitions. Word has length 640 [2023-12-16 02:56:34,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:34,588 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 513 transitions. [2023-12-16 02:56:34,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 2 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 2 states have call successors, (98) [2023-12-16 02:56:34,591 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 513 transitions. [2023-12-16 02:56:34,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-12-16 02:56:34,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:34,628 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:34,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 02:56:34,836 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 [2023-12-16 02:56:34,837 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:34,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:34,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1037541160, now seen corresponding path program 1 times [2023-12-16 02:56:34,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:34,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853408318] [2023-12-16 02:56:34,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:34,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:34,994 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:34,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1590479887] [2023-12-16 02:56:34,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:34,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:34,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:35,006 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) [2023-12-16 02:56:35,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 02:56:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:35,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:56:35,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:35,522 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-16 02:56:35,522 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:56:35,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:35,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853408318] [2023-12-16 02:56:35,523 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:56:35,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590479887] [2023-12-16 02:56:35,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590479887] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:56:35,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:56:35,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:56:35,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179841844] [2023-12-16 02:56:35,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:56:35,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:56:35,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:35,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:56:35,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:56:35,531 INFO L87 Difference]: Start difference. First operand 302 states and 513 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-16 02:56:35,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:35,650 INFO L93 Difference]: Finished difference Result 904 states and 1537 transitions. [2023-12-16 02:56:35,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:56:35,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 640 [2023-12-16 02:56:35,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:35,663 INFO L225 Difference]: With dead ends: 904 [2023-12-16 02:56:35,663 INFO L226 Difference]: Without dead ends: 603 [2023-12-16 02:56:35,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 638 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:56:35,668 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 489 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:56:35,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 1331 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:56:35,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2023-12-16 02:56:35,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 601. [2023-12-16 02:56:35,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 402 states have (on average 1.5671641791044777) internal successors, (630), 402 states have internal predecessors, (630), 196 states have call successors, (196), 2 states have call predecessors, (196), 2 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) [2023-12-16 02:56:35,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 1022 transitions. [2023-12-16 02:56:35,774 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 1022 transitions. Word has length 640 [2023-12-16 02:56:35,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:35,777 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 1022 transitions. [2023-12-16 02:56:35,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-16 02:56:35,778 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 1022 transitions. [2023-12-16 02:56:35,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-12-16 02:56:35,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:35,784 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:35,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 02:56:35,992 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 [2023-12-16 02:56:35,993 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:35,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:35,994 INFO L85 PathProgramCache]: Analyzing trace with hash -991044950, now seen corresponding path program 1 times [2023-12-16 02:56:35,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:35,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322607515] [2023-12-16 02:56:35,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:35,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:36,101 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:36,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [701593655] [2023-12-16 02:56:36,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:36,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:36,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:36,109 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) [2023-12-16 02:56:36,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 02:56:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:36,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:56:36,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:36,621 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-16 02:56:36,622 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:56:36,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:36,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322607515] [2023-12-16 02:56:36,622 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:56:36,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701593655] [2023-12-16 02:56:36,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701593655] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:56:36,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:56:36,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:56:36,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361751151] [2023-12-16 02:56:36,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:56:36,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:56:36,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:36,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:56:36,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:56:36,628 INFO L87 Difference]: Start difference. First operand 601 states and 1022 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-16 02:56:36,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:36,702 INFO L93 Difference]: Finished difference Result 1603 states and 2727 transitions. [2023-12-16 02:56:36,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:56:36,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 640 [2023-12-16 02:56:36,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:36,711 INFO L225 Difference]: With dead ends: 1603 [2023-12-16 02:56:36,712 INFO L226 Difference]: Without dead ends: 1003 [2023-12-16 02:56:36,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 638 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:56:36,716 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 305 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:56:36,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 1010 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:56:36,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2023-12-16 02:56:36,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 999. [2023-12-16 02:56:36,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 682 states have (on average 1.5762463343108504) internal successors, (1075), 684 states have internal predecessors, (1075), 312 states have call successors, (312), 4 states have call predecessors, (312), 4 states have return successors, (312), 310 states have call predecessors, (312), 312 states have call successors, (312) [2023-12-16 02:56:36,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1699 transitions. [2023-12-16 02:56:36,823 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1699 transitions. Word has length 640 [2023-12-16 02:56:36,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:36,824 INFO L495 AbstractCegarLoop]: Abstraction has 999 states and 1699 transitions. [2023-12-16 02:56:36,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-16 02:56:36,824 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1699 transitions. [2023-12-16 02:56:36,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-12-16 02:56:36,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:36,830 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:36,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-16 02:56:37,039 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 [2023-12-16 02:56:37,040 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:37,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:37,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1059939048, now seen corresponding path program 1 times [2023-12-16 02:56:37,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:37,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056088484] [2023-12-16 02:56:37,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:37,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:37,114 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:37,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1487821823] [2023-12-16 02:56:37,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:37,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:37,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:37,116 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) [2023-12-16 02:56:37,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 02:56:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:37,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:56:37,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:37,606 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-16 02:56:37,606 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:56:37,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:37,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056088484] [2023-12-16 02:56:37,608 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:56:37,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487821823] [2023-12-16 02:56:37,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487821823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:56:37,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:56:37,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:56:37,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985913481] [2023-12-16 02:56:37,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:56:37,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:56:37,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:37,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:56:37,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:56:37,612 INFO L87 Difference]: Start difference. First operand 999 states and 1699 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-16 02:56:37,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:37,716 INFO L93 Difference]: Finished difference Result 2987 states and 5081 transitions. [2023-12-16 02:56:37,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:56:37,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 640 [2023-12-16 02:56:37,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:37,729 INFO L225 Difference]: With dead ends: 2987 [2023-12-16 02:56:37,729 INFO L226 Difference]: Without dead ends: 1989 [2023-12-16 02:56:37,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 638 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:56:37,736 INFO L413 NwaCegarLoop]: 884 mSDtfsCounter, 473 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:56:37,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 1385 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:56:37,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1989 states. [2023-12-16 02:56:37,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1989 to 1987. [2023-12-16 02:56:37,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1987 states, 1354 states have (on average 1.5642540620384047) internal successors, (2118), 1358 states have internal predecessors, (2118), 624 states have call successors, (624), 8 states have call predecessors, (624), 8 states have return successors, (624), 620 states have call predecessors, (624), 624 states have call successors, (624) [2023-12-16 02:56:37,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 3366 transitions. [2023-12-16 02:56:37,910 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 3366 transitions. Word has length 640 [2023-12-16 02:56:37,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:37,912 INFO L495 AbstractCegarLoop]: Abstraction has 1987 states and 3366 transitions. [2023-12-16 02:56:37,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-16 02:56:37,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 3366 transitions. [2023-12-16 02:56:37,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-12-16 02:56:37,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:37,919 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:37,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 02:56:38,128 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 [2023-12-16 02:56:38,129 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:38,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:38,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1121978662, now seen corresponding path program 1 times [2023-12-16 02:56:38,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:38,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516830355] [2023-12-16 02:56:38,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:38,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:38,192 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:38,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1984417357] [2023-12-16 02:56:38,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:38,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:38,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:38,194 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) [2023-12-16 02:56:38,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 02:56:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:38,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:56:38,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:38,672 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-16 02:56:38,673 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:56:38,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:38,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516830355] [2023-12-16 02:56:38,673 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:56:38,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984417357] [2023-12-16 02:56:38,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984417357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:56:38,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:56:38,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:56:38,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565640255] [2023-12-16 02:56:38,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:56:38,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:56:38,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:38,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:56:38,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:56:38,676 INFO L87 Difference]: Start difference. First operand 1987 states and 3366 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-16 02:56:38,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:38,800 INFO L93 Difference]: Finished difference Result 5177 states and 8785 transitions. [2023-12-16 02:56:38,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:56:38,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 640 [2023-12-16 02:56:38,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:38,819 INFO L225 Difference]: With dead ends: 5177 [2023-12-16 02:56:38,819 INFO L226 Difference]: Without dead ends: 3191 [2023-12-16 02:56:38,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 638 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:56:38,828 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 264 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 1090 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 [2023-12-16 02:56:38,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 1090 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:56:38,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3191 states. [2023-12-16 02:56:39,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3191 to 3181. [2023-12-16 02:56:39,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3181 states, 2300 states have (on average 1.596086956521739) internal successors, (3671), 2312 states have internal predecessors, (3671), 864 states have call successors, (864), 16 states have call predecessors, (864), 16 states have return successors, (864), 852 states have call predecessors, (864), 864 states have call successors, (864) [2023-12-16 02:56:39,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3181 states to 3181 states and 5399 transitions. [2023-12-16 02:56:39,118 INFO L78 Accepts]: Start accepts. Automaton has 3181 states and 5399 transitions. Word has length 640 [2023-12-16 02:56:39,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:39,119 INFO L495 AbstractCegarLoop]: Abstraction has 3181 states and 5399 transitions. [2023-12-16 02:56:39,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-16 02:56:39,120 INFO L276 IsEmpty]: Start isEmpty. Operand 3181 states and 5399 transitions. [2023-12-16 02:56:39,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-12-16 02:56:39,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:39,129 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:39,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 02:56:39,337 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 [2023-12-16 02:56:39,338 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:39,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:39,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1106459944, now seen corresponding path program 1 times [2023-12-16 02:56:39,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:39,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248645260] [2023-12-16 02:56:39,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:39,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:39,402 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:39,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [46446462] [2023-12-16 02:56:39,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:39,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:39,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:39,404 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) [2023-12-16 02:56:39,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 02:56:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:39,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:56:39,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:40,129 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9331 proven. 120 refuted. 0 times theorem prover too weak. 9561 trivial. 0 not checked. [2023-12-16 02:56:40,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:56:40,543 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 171 proven. 120 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-16 02:56:40,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:40,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248645260] [2023-12-16 02:56:40,544 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:56:40,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46446462] [2023-12-16 02:56:40,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46446462] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:56:40,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:56:40,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 02:56:40,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891604021] [2023-12-16 02:56:40,545 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:56:40,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 02:56:40,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:40,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 02:56:40,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:56:40,547 INFO L87 Difference]: Start difference. First operand 3181 states and 5399 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, (138), 2 states have call predecessors, (138), 4 states have return successors, (139), 2 states have call predecessors, (139), 2 states have call successors, (139) [2023-12-16 02:56:41,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:41,155 INFO L93 Difference]: Finished difference Result 6409 states and 10805 transitions. [2023-12-16 02:56:41,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 02:56:41,156 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, (138), 2 states have call predecessors, (138), 4 states have return successors, (139), 2 states have call predecessors, (139), 2 states have call successors, (139) Word has length 640 [2023-12-16 02:56:41,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:41,175 INFO L225 Difference]: With dead ends: 6409 [2023-12-16 02:56:41,176 INFO L226 Difference]: Without dead ends: 3229 [2023-12-16 02:56:41,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1282 GetRequests, 1272 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 02:56:41,187 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 315 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:56:41,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 984 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 02:56:41,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3229 states. [2023-12-16 02:56:41,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3229 to 3153. [2023-12-16 02:56:41,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3153 states, 2276 states have (on average 1.5478910369068541) internal successors, (3523), 2288 states have internal predecessors, (3523), 856 states have call successors, (856), 20 states have call predecessors, (856), 20 states have return successors, (856), 844 states have call predecessors, (856), 856 states have call successors, (856) [2023-12-16 02:56:41,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3153 states to 3153 states and 5235 transitions. [2023-12-16 02:56:41,468 INFO L78 Accepts]: Start accepts. Automaton has 3153 states and 5235 transitions. Word has length 640 [2023-12-16 02:56:41,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:41,469 INFO L495 AbstractCegarLoop]: Abstraction has 3153 states and 5235 transitions. [2023-12-16 02:56:41,470 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, (138), 2 states have call predecessors, (138), 4 states have return successors, (139), 2 states have call predecessors, (139), 2 states have call successors, (139) [2023-12-16 02:56:41,470 INFO L276 IsEmpty]: Start isEmpty. Operand 3153 states and 5235 transitions. [2023-12-16 02:56:41,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-12-16 02:56:41,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:41,477 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:41,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-16 02:56:41,686 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 [2023-12-16 02:56:41,687 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:41,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:41,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1644493550, now seen corresponding path program 1 times [2023-12-16 02:56:41,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:41,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469229561] [2023-12-16 02:56:41,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:41,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:41,749 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:41,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418561271] [2023-12-16 02:56:41,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:41,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:41,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:41,751 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) [2023-12-16 02:56:41,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 02:56:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:42,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 02:56:42,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:42,949 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-16 02:56:42,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:56:42,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:42,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469229561] [2023-12-16 02:56:42,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:56:42,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418561271] [2023-12-16 02:56:42,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418561271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:56:42,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:56:42,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 02:56:42,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039508636] [2023-12-16 02:56:42,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:56:42,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 02:56:42,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:42,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 02:56:42,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 02:56:42,952 INFO L87 Difference]: Start difference. First operand 3153 states and 5235 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, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-16 02:56:45,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:45,204 INFO L93 Difference]: Finished difference Result 18414 states and 30593 transitions. [2023-12-16 02:56:45,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 02:56:45,205 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, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 640 [2023-12-16 02:56:45,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:45,356 INFO L225 Difference]: With dead ends: 18414 [2023-12-16 02:56:45,356 INFO L226 Difference]: Without dead ends: 15156 [2023-12-16 02:56:45,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 635 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-16 02:56:45,370 INFO L413 NwaCegarLoop]: 1156 mSDtfsCounter, 3487 mSDsluCounter, 2099 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3487 SdHoareTripleChecker+Valid, 3255 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:56:45,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3487 Valid, 3255 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 02:56:45,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15156 states. [2023-12-16 02:56:46,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15156 to 15120. [2023-12-16 02:56:46,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15120 states, 11132 states have (on average 1.5437477542220626) internal successors, (17185), 11203 states have internal predecessors, (17185), 3886 states have call successors, (3886), 101 states have call predecessors, (3886), 101 states have return successors, (3886), 3815 states have call predecessors, (3886), 3886 states have call successors, (3886) [2023-12-16 02:56:46,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15120 states to 15120 states and 24957 transitions. [2023-12-16 02:56:46,638 INFO L78 Accepts]: Start accepts. Automaton has 15120 states and 24957 transitions. Word has length 640 [2023-12-16 02:56:46,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:46,639 INFO L495 AbstractCegarLoop]: Abstraction has 15120 states and 24957 transitions. [2023-12-16 02:56:46,641 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, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-16 02:56:46,641 INFO L276 IsEmpty]: Start isEmpty. Operand 15120 states and 24957 transitions. [2023-12-16 02:56:46,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-12-16 02:56:46,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:46,654 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:46,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 02:56:46,865 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 [2023-12-16 02:56:46,865 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:46,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:46,866 INFO L85 PathProgramCache]: Analyzing trace with hash -773990928, now seen corresponding path program 1 times [2023-12-16 02:56:46,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:46,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844263102] [2023-12-16 02:56:46,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:46,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:46,931 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:46,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572009185] [2023-12-16 02:56:46,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:46,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:46,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:46,933 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) [2023-12-16 02:56:46,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 02:56:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:47,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:56:47,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:48,832 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-16 02:56:48,832 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:56:48,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:48,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844263102] [2023-12-16 02:56:48,832 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:56:48,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572009185] [2023-12-16 02:56:48,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572009185] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:56:48,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:56:48,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:56:48,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148695954] [2023-12-16 02:56:48,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:56:48,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:56:48,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:48,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:56:48,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:56:48,835 INFO L87 Difference]: Start difference. First operand 15120 states and 24957 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-16 02:56:49,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:49,484 INFO L93 Difference]: Finished difference Result 32585 states and 53794 transitions. [2023-12-16 02:56:49,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:56:49,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 640 [2023-12-16 02:56:49,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:49,539 INFO L225 Difference]: With dead ends: 32585 [2023-12-16 02:56:49,539 INFO L226 Difference]: Without dead ends: 17466 [2023-12-16 02:56:49,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 638 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:56:49,582 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 217 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:56:49,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 1201 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:56:49,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17466 states. [2023-12-16 02:56:51,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17466 to 17464. [2023-12-16 02:56:51,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17464 states, 12819 states have (on average 1.5419299477338326) internal successors, (19766), 12899 states have internal predecessors, (19766), 4528 states have call successors, (4528), 116 states have call predecessors, (4528), 116 states have return successors, (4528), 4448 states have call predecessors, (4528), 4528 states have call successors, (4528) [2023-12-16 02:56:51,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17464 states to 17464 states and 28822 transitions. [2023-12-16 02:56:51,149 INFO L78 Accepts]: Start accepts. Automaton has 17464 states and 28822 transitions. Word has length 640 [2023-12-16 02:56:51,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:51,150 INFO L495 AbstractCegarLoop]: Abstraction has 17464 states and 28822 transitions. [2023-12-16 02:56:51,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-16 02:56:51,151 INFO L276 IsEmpty]: Start isEmpty. Operand 17464 states and 28822 transitions. [2023-12-16 02:56:51,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-12-16 02:56:51,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:51,162 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:51,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 02:56:51,370 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 [2023-12-16 02:56:51,371 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:51,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:51,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1973125356, now seen corresponding path program 1 times [2023-12-16 02:56:51,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:51,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658938551] [2023-12-16 02:56:51,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:51,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:51,443 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:51,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687632667] [2023-12-16 02:56:51,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:51,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:51,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:51,445 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) [2023-12-16 02:56:51,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 02:56:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:51,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:56:51,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:52,306 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9141 proven. 177 refuted. 0 times theorem prover too weak. 9694 trivial. 0 not checked. [2023-12-16 02:56:52,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:56:52,750 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 114 proven. 177 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-16 02:56:52,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:52,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658938551] [2023-12-16 02:56:52,751 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:56:52,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687632667] [2023-12-16 02:56:52,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687632667] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:56:52,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:56:52,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 02:56:52,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122059837] [2023-12-16 02:56:52,754 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:56:52,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 02:56:52,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:52,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 02:56:52,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:56:52,756 INFO L87 Difference]: Start difference. First operand 17464 states and 28822 transitions. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (157), 2 states have call predecessors, (157), 4 states have return successors, (158), 2 states have call predecessors, (158), 2 states have call successors, (158) [2023-12-16 02:56:53,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:53,939 INFO L93 Difference]: Finished difference Result 33536 states and 55160 transitions. [2023-12-16 02:56:53,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 02:56:53,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (157), 2 states have call predecessors, (157), 4 states have return successors, (158), 2 states have call predecessors, (158), 2 states have call successors, (158) Word has length 641 [2023-12-16 02:56:53,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:53,998 INFO L225 Difference]: With dead ends: 33536 [2023-12-16 02:56:53,999 INFO L226 Difference]: Without dead ends: 15908 [2023-12-16 02:56:54,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1284 GetRequests, 1274 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 02:56:54,041 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 270 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:56:54,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 1176 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 02:56:54,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15908 states. [2023-12-16 02:56:55,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15908 to 15695. [2023-12-16 02:56:55,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15695 states, 11481 states have (on average 1.5340998170891038) internal successors, (17613), 11551 states have internal predecessors, (17613), 4080 states have call successors, (4080), 133 states have call predecessors, (4080), 133 states have return successors, (4080), 4010 states have call predecessors, (4080), 4080 states have call successors, (4080) [2023-12-16 02:56:55,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15695 states to 15695 states and 25773 transitions. [2023-12-16 02:56:55,462 INFO L78 Accepts]: Start accepts. Automaton has 15695 states and 25773 transitions. Word has length 641 [2023-12-16 02:56:55,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:55,463 INFO L495 AbstractCegarLoop]: Abstraction has 15695 states and 25773 transitions. [2023-12-16 02:56:55,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (157), 2 states have call predecessors, (157), 4 states have return successors, (158), 2 states have call predecessors, (158), 2 states have call successors, (158) [2023-12-16 02:56:55,463 INFO L276 IsEmpty]: Start isEmpty. Operand 15695 states and 25773 transitions. [2023-12-16 02:56:55,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-12-16 02:56:55,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:55,472 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:55,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 02:56:55,681 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 [2023-12-16 02:56:55,681 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:55,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:55,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1687835283, now seen corresponding path program 1 times [2023-12-16 02:56:55,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:55,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893247125] [2023-12-16 02:56:55,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:55,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:55,732 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:55,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1785561787] [2023-12-16 02:56:55,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:55,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:55,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:55,734 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) [2023-12-16 02:56:55,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 02:56:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:56,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:56:56,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:56,487 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9183 proven. 114 refuted. 0 times theorem prover too weak. 9715 trivial. 0 not checked. [2023-12-16 02:56:56,487 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:56:56,895 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 177 proven. 114 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-16 02:56:56,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:56,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893247125] [2023-12-16 02:56:56,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:56:56,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785561787] [2023-12-16 02:56:56,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785561787] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:56:56,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:56:56,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 02:56:56,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66404038] [2023-12-16 02:56:56,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:56:56,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 02:56:56,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:56,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 02:56:56,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:56:56,898 INFO L87 Difference]: Start difference. First operand 15695 states and 25773 transitions. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (136), 2 states have call predecessors, (136), 4 states have return successors, (137), 2 states have call predecessors, (137), 2 states have call successors, (137) [2023-12-16 02:56:57,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:57,836 INFO L93 Difference]: Finished difference Result 27060 states and 44667 transitions. [2023-12-16 02:56:57,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 02:56:57,837 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (136), 2 states have call predecessors, (136), 4 states have return successors, (137), 2 states have call predecessors, (137), 2 states have call successors, (137) Word has length 641 [2023-12-16 02:56:57,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:57,872 INFO L225 Difference]: With dead ends: 27060 [2023-12-16 02:56:57,872 INFO L226 Difference]: Without dead ends: 11426 [2023-12-16 02:56:57,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1284 GetRequests, 1274 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 02:56:57,911 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 283 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:56:57,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 965 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 02:56:57,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11426 states. [2023-12-16 02:56:58,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11426 to 8907. [2023-12-16 02:56:58,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8907 states, 6428 states have (on average 1.5197573117610454) internal successors, (9769), 6456 states have internal predecessors, (9769), 2374 states have call successors, (2374), 104 states have call predecessors, (2374), 104 states have return successors, (2374), 2346 states have call predecessors, (2374), 2374 states have call successors, (2374) [2023-12-16 02:56:58,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8907 states to 8907 states and 14517 transitions. [2023-12-16 02:56:58,920 INFO L78 Accepts]: Start accepts. Automaton has 8907 states and 14517 transitions. Word has length 641 [2023-12-16 02:56:58,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:58,921 INFO L495 AbstractCegarLoop]: Abstraction has 8907 states and 14517 transitions. [2023-12-16 02:56:58,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (136), 2 states have call predecessors, (136), 4 states have return successors, (137), 2 states have call predecessors, (137), 2 states have call successors, (137) [2023-12-16 02:56:58,921 INFO L276 IsEmpty]: Start isEmpty. Operand 8907 states and 14517 transitions. [2023-12-16 02:56:58,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-12-16 02:56:58,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:58,928 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:58,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 02:56:59,136 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 [2023-12-16 02:56:59,137 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:59,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:59,138 INFO L85 PathProgramCache]: Analyzing trace with hash 363148715, now seen corresponding path program 1 times [2023-12-16 02:56:59,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:59,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285971165] [2023-12-16 02:56:59,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:59,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:59,191 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:59,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [494089442] [2023-12-16 02:56:59,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:59,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:59,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:59,193 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) [2023-12-16 02:56:59,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 02:56:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:59,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 02:56:59,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:57:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-16 02:57:00,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:57:00,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:57:00,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285971165] [2023-12-16 02:57:00,510 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:57:00,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494089442] [2023-12-16 02:57:00,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494089442] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:57:00,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:57:00,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 02:57:00,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242685947] [2023-12-16 02:57:00,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:57:00,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 02:57:00,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:57:00,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 02:57:00,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:57:00,513 INFO L87 Difference]: Start difference. First operand 8907 states and 14517 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 6 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-16 02:57:01,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:57:01,576 INFO L93 Difference]: Finished difference Result 19126 states and 31167 transitions. [2023-12-16 02:57:01,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 02:57:01,576 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 6 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 641 [2023-12-16 02:57:01,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:57:01,611 INFO L225 Difference]: With dead ends: 19126 [2023-12-16 02:57:01,611 INFO L226 Difference]: Without dead ends: 10280 [2023-12-16 02:57:01,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 635 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2023-12-16 02:57:01,638 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 1515 mSDsluCounter, 2287 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 2935 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:57:01,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 2935 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 02:57:01,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10280 states. [2023-12-16 02:57:02,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10280 to 9714. [2023-12-16 02:57:02,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9714 states, 7170 states have (on average 1.5308228730822873) internal successors, (10976), 7197 states have internal predecessors, (10976), 2434 states have call successors, (2434), 109 states have call predecessors, (2434), 109 states have return successors, (2434), 2407 states have call predecessors, (2434), 2434 states have call successors, (2434) [2023-12-16 02:57:02,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9714 states to 9714 states and 15844 transitions. [2023-12-16 02:57:02,342 INFO L78 Accepts]: Start accepts. Automaton has 9714 states and 15844 transitions. Word has length 641 [2023-12-16 02:57:02,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:57:02,343 INFO L495 AbstractCegarLoop]: Abstraction has 9714 states and 15844 transitions. [2023-12-16 02:57:02,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 6 states have internal predecessors, (154), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-16 02:57:02,343 INFO L276 IsEmpty]: Start isEmpty. Operand 9714 states and 15844 transitions. [2023-12-16 02:57:02,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2023-12-16 02:57:02,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:57:02,349 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:57:02,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 02:57:02,557 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 [2023-12-16 02:57:02,558 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:57:02,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:57:02,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1725897509, now seen corresponding path program 1 times [2023-12-16 02:57:02,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:57:02,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096100602] [2023-12-16 02:57:02,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:02,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:57:02,624 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:57:02,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1248760842] [2023-12-16 02:57:02,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:02,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:02,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:57:02,630 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) [2023-12-16 02:57:02,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 02:57:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:57:03,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 02:57:03,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:57:03,590 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-16 02:57:03,591 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:57:03,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:57:03,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096100602] [2023-12-16 02:57:03,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:57:03,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248760842] [2023-12-16 02:57:03,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248760842] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:57:03,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:57:03,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 02:57:03,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934390998] [2023-12-16 02:57:03,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:57:03,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 02:57:03,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:57:03,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 02:57:03,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-16 02:57:03,594 INFO L87 Difference]: Start difference. First operand 9714 states and 15844 transitions. Second operand has 9 states, 9 states have (on average 17.22222222222222) internal successors, (155), 9 states have internal predecessors, (155), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-16 02:57:05,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:57:05,579 INFO L93 Difference]: Finished difference Result 23519 states and 38411 transitions. [2023-12-16 02:57:05,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 02:57:05,579 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.22222222222222) internal successors, (155), 9 states have internal predecessors, (155), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 642 [2023-12-16 02:57:05,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:57:05,630 INFO L225 Difference]: With dead ends: 23519 [2023-12-16 02:57:05,631 INFO L226 Difference]: Without dead ends: 16733 [2023-12-16 02:57:05,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 636 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-12-16 02:57:05,653 INFO L413 NwaCegarLoop]: 769 mSDtfsCounter, 3843 mSDsluCounter, 3741 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3843 SdHoareTripleChecker+Valid, 4510 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 02:57:05,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3843 Valid, 4510 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 02:57:05,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16733 states. [2023-12-16 02:57:06,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16733 to 13885. [2023-12-16 02:57:06,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13885 states, 10365 states have (on average 1.5432706222865413) internal successors, (15996), 10408 states have internal predecessors, (15996), 3370 states have call successors, (3370), 149 states have call predecessors, (3370), 149 states have return successors, (3370), 3327 states have call predecessors, (3370), 3370 states have call successors, (3370) [2023-12-16 02:57:06,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13885 states to 13885 states and 22736 transitions. [2023-12-16 02:57:06,684 INFO L78 Accepts]: Start accepts. Automaton has 13885 states and 22736 transitions. Word has length 642 [2023-12-16 02:57:06,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:57:06,685 INFO L495 AbstractCegarLoop]: Abstraction has 13885 states and 22736 transitions. [2023-12-16 02:57:06,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.22222222222222) internal successors, (155), 9 states have internal predecessors, (155), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-16 02:57:06,685 INFO L276 IsEmpty]: Start isEmpty. Operand 13885 states and 22736 transitions. [2023-12-16 02:57:06,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2023-12-16 02:57:06,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:57:06,690 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:57:06,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-16 02:57:06,890 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 [2023-12-16 02:57:06,891 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:57:06,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:57:06,891 INFO L85 PathProgramCache]: Analyzing trace with hash -2008370009, now seen corresponding path program 1 times [2023-12-16 02:57:06,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:57:06,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054836857] [2023-12-16 02:57:06,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:06,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:57:06,947 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:57:06,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2028024825] [2023-12-16 02:57:06,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:06,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:06,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:57:06,949 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) [2023-12-16 02:57:06,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-16 02:57:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:57:07,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 02:57:07,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:57:08,615 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 8324 proven. 420 refuted. 0 times theorem prover too weak. 10268 trivial. 0 not checked. [2023-12-16 02:57:08,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:57:09,083 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 156 proven. 423 refuted. 0 times theorem prover too weak. 18433 trivial. 0 not checked. [2023-12-16 02:57:09,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:57:09,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054836857] [2023-12-16 02:57:09,084 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:57:09,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028024825] [2023-12-16 02:57:09,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028024825] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:57:09,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:57:09,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-12-16 02:57:09,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184347041] [2023-12-16 02:57:09,084 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:57:09,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 02:57:09,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:57:09,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 02:57:09,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-16 02:57:09,087 INFO L87 Difference]: Start difference. First operand 13885 states and 22736 transitions. Second operand has 13 states, 13 states have (on average 17.153846153846153) internal successors, (223), 13 states have internal predecessors, (223), 4 states have call successors, (171), 3 states have call predecessors, (171), 7 states have return successors, (172), 4 states have call predecessors, (172), 4 states have call successors, (172) [2023-12-16 02:57:10,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:57:10,446 INFO L93 Difference]: Finished difference Result 28553 states and 45984 transitions. [2023-12-16 02:57:10,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 02:57:10,446 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 17.153846153846153) internal successors, (223), 13 states have internal predecessors, (223), 4 states have call successors, (171), 3 states have call predecessors, (171), 7 states have return successors, (172), 4 states have call predecessors, (172), 4 states have call successors, (172) Word has length 642 [2023-12-16 02:57:10,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:57:10,480 INFO L225 Difference]: With dead ends: 28553 [2023-12-16 02:57:10,480 INFO L226 Difference]: Without dead ends: 14860 [2023-12-16 02:57:10,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1291 GetRequests, 1271 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2023-12-16 02:57:10,507 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 1016 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:57:10,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1041 Valid, 911 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 02:57:10,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14860 states. [2023-12-16 02:57:11,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14860 to 13872. [2023-12-16 02:57:11,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13872 states, 10450 states have (on average 1.5285167464114833) internal successors, (15973), 10493 states have internal predecessors, (15973), 3202 states have call successors, (3202), 219 states have call predecessors, (3202), 219 states have return successors, (3202), 3159 states have call predecessors, (3202), 3202 states have call successors, (3202) [2023-12-16 02:57:11,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13872 states to 13872 states and 22377 transitions. [2023-12-16 02:57:11,544 INFO L78 Accepts]: Start accepts. Automaton has 13872 states and 22377 transitions. Word has length 642 [2023-12-16 02:57:11,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:57:11,544 INFO L495 AbstractCegarLoop]: Abstraction has 13872 states and 22377 transitions. [2023-12-16 02:57:11,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.153846153846153) internal successors, (223), 13 states have internal predecessors, (223), 4 states have call successors, (171), 3 states have call predecessors, (171), 7 states have return successors, (172), 4 states have call predecessors, (172), 4 states have call successors, (172) [2023-12-16 02:57:11,545 INFO L276 IsEmpty]: Start isEmpty. Operand 13872 states and 22377 transitions. [2023-12-16 02:57:11,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2023-12-16 02:57:11,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:57:11,551 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:57:11,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-16 02:57:11,753 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 [2023-12-16 02:57:11,754 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:57:11,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:57:11,754 INFO L85 PathProgramCache]: Analyzing trace with hash -154013527, now seen corresponding path program 1 times [2023-12-16 02:57:11,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:57:11,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622808036] [2023-12-16 02:57:11,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:11,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:57:11,815 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:57:11,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1847623871] [2023-12-16 02:57:11,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:11,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:11,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:57:11,817 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) [2023-12-16 02:57:11,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-16 02:57:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:57:12,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 02:57:12,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:57:13,229 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9792 proven. 330 refuted. 0 times theorem prover too weak. 8890 trivial. 0 not checked. [2023-12-16 02:57:13,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:57:13,642 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 246 proven. 333 refuted. 0 times theorem prover too weak. 18433 trivial. 0 not checked. [2023-12-16 02:57:13,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:57:13,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622808036] [2023-12-16 02:57:13,642 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:57:13,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847623871] [2023-12-16 02:57:13,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847623871] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:57:13,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:57:13,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-12-16 02:57:13,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843901484] [2023-12-16 02:57:13,643 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:57:13,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 02:57:13,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:57:13,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 02:57:13,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-16 02:57:13,646 INFO L87 Difference]: Start difference. First operand 13872 states and 22377 transitions. Second operand has 13 states, 13 states have (on average 19.53846153846154) internal successors, (254), 13 states have internal predecessors, (254), 4 states have call successors, (155), 3 states have call predecessors, (155), 7 states have return successors, (156), 4 states have call predecessors, (156), 4 states have call successors, (156) [2023-12-16 02:57:14,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:57:14,914 INFO L93 Difference]: Finished difference Result 27750 states and 44331 transitions. [2023-12-16 02:57:14,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 02:57:14,915 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 19.53846153846154) internal successors, (254), 13 states have internal predecessors, (254), 4 states have call successors, (155), 3 states have call predecessors, (155), 7 states have return successors, (156), 4 states have call predecessors, (156), 4 states have call successors, (156) Word has length 642 [2023-12-16 02:57:14,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:57:14,948 INFO L225 Difference]: With dead ends: 27750 [2023-12-16 02:57:14,948 INFO L226 Difference]: Without dead ends: 14442 [2023-12-16 02:57:14,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1291 GetRequests, 1271 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2023-12-16 02:57:14,975 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 904 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:57:14,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 1162 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 02:57:14,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14442 states. [2023-12-16 02:57:15,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14442 to 14032. [2023-12-16 02:57:15,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14032 states, 10570 states have (on average 1.515988647114475) internal successors, (16024), 10613 states have internal predecessors, (16024), 3202 states have call successors, (3202), 259 states have call predecessors, (3202), 259 states have return successors, (3202), 3159 states have call predecessors, (3202), 3202 states have call successors, (3202) [2023-12-16 02:57:16,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14032 states to 14032 states and 22428 transitions. [2023-12-16 02:57:16,012 INFO L78 Accepts]: Start accepts. Automaton has 14032 states and 22428 transitions. Word has length 642 [2023-12-16 02:57:16,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:57:16,013 INFO L495 AbstractCegarLoop]: Abstraction has 14032 states and 22428 transitions. [2023-12-16 02:57:16,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.53846153846154) internal successors, (254), 13 states have internal predecessors, (254), 4 states have call successors, (155), 3 states have call predecessors, (155), 7 states have return successors, (156), 4 states have call predecessors, (156), 4 states have call successors, (156) [2023-12-16 02:57:16,013 INFO L276 IsEmpty]: Start isEmpty. Operand 14032 states and 22428 transitions. [2023-12-16 02:57:16,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2023-12-16 02:57:16,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:57:16,019 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:57:16,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-16 02:57:16,229 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 [2023-12-16 02:57:16,229 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:57:16,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:57:16,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1774259175, now seen corresponding path program 1 times [2023-12-16 02:57:16,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:57:16,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877868435] [2023-12-16 02:57:16,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:16,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:57:16,301 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:57:16,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1711516500] [2023-12-16 02:57:16,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:16,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:16,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:57:16,303 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) [2023-12-16 02:57:16,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-16 02:57:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:57:16,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 02:57:16,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:57:17,979 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 7153 proven. 219 refuted. 0 times theorem prover too weak. 11640 trivial. 0 not checked. [2023-12-16 02:57:17,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:57:18,413 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 72 proven. 219 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-16 02:57:18,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:57:18,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877868435] [2023-12-16 02:57:18,414 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:57:18,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711516500] [2023-12-16 02:57:18,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711516500] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:57:18,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:57:18,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-12-16 02:57:18,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873261774] [2023-12-16 02:57:18,414 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:57:18,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 02:57:18,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:57:18,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 02:57:18,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-16 02:57:18,417 INFO L87 Difference]: Start difference. First operand 14032 states and 22428 transitions. Second operand has 10 states, 10 states have (on average 26.5) internal successors, (265), 10 states have internal predecessors, (265), 4 states have call successors, (196), 3 states have call predecessors, (196), 5 states have return successors, (196), 4 states have call predecessors, (196), 4 states have call successors, (196) [2023-12-16 02:57:19,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:57:19,849 INFO L93 Difference]: Finished difference Result 27939 states and 44409 transitions. [2023-12-16 02:57:19,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 02:57:19,849 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 26.5) internal successors, (265), 10 states have internal predecessors, (265), 4 states have call successors, (196), 3 states have call predecessors, (196), 5 states have return successors, (196), 4 states have call predecessors, (196), 4 states have call successors, (196) Word has length 642 [2023-12-16 02:57:19,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:57:19,895 INFO L225 Difference]: With dead ends: 27939 [2023-12-16 02:57:19,895 INFO L226 Difference]: Without dead ends: 14402 [2023-12-16 02:57:19,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1286 GetRequests, 1274 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-12-16 02:57:19,922 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 453 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:57:19,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 923 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 02:57:19,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14402 states. [2023-12-16 02:57:20,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14402 to 14032. [2023-12-16 02:57:20,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14032 states, 10570 states have (on average 1.509460737937559) internal successors, (15955), 10613 states have internal predecessors, (15955), 3202 states have call successors, (3202), 259 states have call predecessors, (3202), 259 states have return successors, (3202), 3159 states have call predecessors, (3202), 3202 states have call successors, (3202) [2023-12-16 02:57:20,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14032 states to 14032 states and 22359 transitions. [2023-12-16 02:57:20,923 INFO L78 Accepts]: Start accepts. Automaton has 14032 states and 22359 transitions. Word has length 642 [2023-12-16 02:57:20,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:57:20,924 INFO L495 AbstractCegarLoop]: Abstraction has 14032 states and 22359 transitions. [2023-12-16 02:57:20,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 26.5) internal successors, (265), 10 states have internal predecessors, (265), 4 states have call successors, (196), 3 states have call predecessors, (196), 5 states have return successors, (196), 4 states have call predecessors, (196), 4 states have call successors, (196) [2023-12-16 02:57:20,924 INFO L276 IsEmpty]: Start isEmpty. Operand 14032 states and 22359 transitions. [2023-12-16 02:57:20,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2023-12-16 02:57:20,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:57:20,929 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] Received shutdown request... [2023-12-16 02:57:20,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-16 02:57:21,129 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 [2023-12-16 02:57:21,130 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:57:21,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:57:21,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1430066503, now seen corresponding path program 1 times [2023-12-16 02:57:21,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:57:21,133 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 02:57:21,133 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 644 with TraceHistMax 98,while AutomatonFreeRefinementEngine was Timeout during feasibility check between null and IpTcStrategyModuleSmtInterpolCraig [1165317061]. [2023-12-16 02:57:21,136 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:57:21,138 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 02:57:21,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:57:21 BoogieIcfgContainer [2023-12-16 02:57:21,140 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 02:57:21,140 INFO L158 Benchmark]: Toolchain (without parser) took 49894.62ms. Allocated memory was 266.3MB in the beginning and 2.6GB in the end (delta: 2.3GB). Free memory was 214.9MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 715.0MB. Max. memory is 8.0GB. [2023-12-16 02:57:21,140 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 194.0MB. Free memory is still 140.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 02:57:21,141 INFO L158 Benchmark]: CACSL2BoogieTranslator took 558.76ms. Allocated memory is still 266.3MB. Free memory was 214.9MB in the beginning and 181.3MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2023-12-16 02:57:21,141 INFO L158 Benchmark]: Boogie Procedure Inliner took 135.70ms. Allocated memory is still 266.3MB. Free memory was 181.3MB in the beginning and 166.2MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-16 02:57:21,141 INFO L158 Benchmark]: Boogie Preprocessor took 174.84ms. Allocated memory is still 266.3MB. Free memory was 166.2MB in the beginning and 205.5MB in the end (delta: -39.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-16 02:57:21,141 INFO L158 Benchmark]: RCFGBuilder took 1193.01ms. Allocated memory is still 266.3MB. Free memory was 205.5MB in the beginning and 112.7MB in the end (delta: 92.8MB). Peak memory consumption was 92.3MB. Max. memory is 8.0GB. [2023-12-16 02:57:21,142 INFO L158 Benchmark]: TraceAbstraction took 47825.36ms. Allocated memory was 266.3MB in the beginning and 2.6GB in the end (delta: 2.3GB). Free memory was 112.1MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 611.2MB. Max. memory is 8.0GB. [2023-12-16 02:57:21,143 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 194.0MB. Free memory is still 140.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 558.76ms. Allocated memory is still 266.3MB. Free memory was 214.9MB in the beginning and 181.3MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 135.70ms. Allocated memory is still 266.3MB. Free memory was 181.3MB in the beginning and 166.2MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 174.84ms. Allocated memory is still 266.3MB. Free memory was 166.2MB in the beginning and 205.5MB in the end (delta: -39.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * RCFGBuilder took 1193.01ms. Allocated memory is still 266.3MB. Free memory was 205.5MB in the beginning and 112.7MB in the end (delta: 92.8MB). Peak memory consumption was 92.3MB. Max. memory is 8.0GB. * TraceAbstraction took 47825.36ms. Allocated memory was 266.3MB in the beginning and 2.6GB in the end (delta: 2.3GB). Free memory was 112.1MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 611.2MB. 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 644 with TraceHistMax 98,while AutomatonFreeRefinementEngine was Timeout during feasibility check between null and IpTcStrategyModuleSmtInterpolCraig [1165317061]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 305 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 47.8s, OverallIterations: 16, TraceHistogramMax: 98, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 14.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14076 SdHoareTripleChecker+Valid, 6.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13834 mSDsluCounter, 23348 SdHoareTripleChecker+Invalid, 5.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14384 mSDsCounter, 1805 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6739 IncrementalHoareTripleChecker+Invalid, 8544 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1805 mSolverCounterUnsat, 8964 mSDtfsCounter, 6739 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13493 GetRequests, 13371 SyntacticMatches, 5 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17464occurred in iteration=8, InterpolantAutomatonStates: 117, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 11.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 8046 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.2s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 11.6s InterpolantComputationTime, 10251 NumberOfCodeBlocks, 10251 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 13438 ConstructedInterpolants, 0 QuantifiedInterpolants, 41333 SizeOfPredicates, 35 NumberOfNonLiveVariables, 21736 ConjunctsInSsa, 99 ConjunctsInUnsatCore, 21 InterpolantComputations, 9 PerfectInterpolantSequences, 396486/399252 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