/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-97.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:53:25,276 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:53:25,321 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:53:25,324 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:53:25,324 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:53:25,348 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:53:25,349 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:53:25,349 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:53:25,349 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:53:25,350 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:53:25,350 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:53:25,350 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:53:25,350 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:53:25,351 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:53:25,351 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:53:25,351 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:53:25,351 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:53:25,352 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:53:25,355 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:53:25,355 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:53:25,358 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:53:25,358 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:53:25,358 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:53:25,359 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:53:25,359 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:53:25,360 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:53:25,360 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:53:25,360 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:53:25,360 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:53:25,360 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:53:25,361 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:53:25,361 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:53:25,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:53:25,361 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:53:25,361 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:53:25,362 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:53:25,362 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:53:25,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:53:25,362 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:53:25,362 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:53:25,362 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:53:25,362 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:53:25,362 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:53:25,362 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:53:25,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:53:25,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:53:25,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:53:25,528 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:53:25,528 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:53:25,529 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-97.i [2023-12-15 19:53:26,569 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:53:26,766 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:53:26,767 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-97.i [2023-12-15 19:53:26,790 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c079b1a5f/20bcfc7f324c46efbabb6641405728c2/FLAG82b1f1187 [2023-12-15 19:53:26,809 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c079b1a5f/20bcfc7f324c46efbabb6641405728c2 [2023-12-15 19:53:26,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:53:26,812 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:53:26,815 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:53:26,816 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:53:26,819 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:53:26,819 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:53:26" (1/1) ... [2023-12-15 19:53:26,821 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c8ab291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:53:26, skipping insertion in model container [2023-12-15 19:53:26,821 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:53:26" (1/1) ... [2023-12-15 19:53:26,865 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:53:26,980 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-97.i[916,929] [2023-12-15 19:53:27,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:53:27,104 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:53:27,117 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-97.i[916,929] [2023-12-15 19:53:27,192 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:53:27,225 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:53:27,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:53:27 WrapperNode [2023-12-15 19:53:27,225 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:53:27,226 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:53:27,227 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:53:27,227 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:53:27,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:53:27" (1/1) ... [2023-12-15 19:53:27,251 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:53:27" (1/1) ... [2023-12-15 19:53:27,314 INFO L138 Inliner]: procedures = 26, calls = 97, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 625 [2023-12-15 19:53:27,314 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:53:27,315 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:53:27,315 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:53:27,315 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:53:27,354 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:53:27" (1/1) ... [2023-12-15 19:53:27,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:53:27" (1/1) ... [2023-12-15 19:53:27,371 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:53:27" (1/1) ... [2023-12-15 19:53:27,401 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 19:53:27,401 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:53:27" (1/1) ... [2023-12-15 19:53:27,401 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:53:27" (1/1) ... [2023-12-15 19:53:27,425 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:53:27" (1/1) ... [2023-12-15 19:53:27,437 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:53:27" (1/1) ... [2023-12-15 19:53:27,442 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:53:27" (1/1) ... [2023-12-15 19:53:27,444 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:53:27" (1/1) ... [2023-12-15 19:53:27,454 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:53:27,454 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:53:27,455 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:53:27,455 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:53:27,455 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:53:27" (1/1) ... [2023-12-15 19:53:27,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:53:27,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:53:27,477 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 19:53:27,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 19:53:27,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:53:27,509 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 19:53:27,509 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 19:53:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:53:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:53:27,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:53:27,621 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:53:27,626 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:53:28,275 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:53:28,311 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:53:28,312 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:53:28,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:53:28 BoogieIcfgContainer [2023-12-15 19:53:28,312 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:53:28,314 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:53:28,314 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:53:28,317 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:53:28,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:53:26" (1/3) ... [2023-12-15 19:53:28,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bbf5eef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:53:28, skipping insertion in model container [2023-12-15 19:53:28,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:53:27" (2/3) ... [2023-12-15 19:53:28,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bbf5eef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:53:28, skipping insertion in model container [2023-12-15 19:53:28,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:53:28" (3/3) ... [2023-12-15 19:53:28,321 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-97.i [2023-12-15 19:53:28,334 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:53:28,334 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:53:28,383 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:53:28,387 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;@730a94f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:53:28,387 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:53:28,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 238 states, 151 states have (on average 1.5894039735099337) internal successors, (240), 152 states have internal predecessors, (240), 84 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-15 19:53:28,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2023-12-15 19:53:28,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:53:28,430 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:53:28,431 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:53:28,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:53:28,436 INFO L85 PathProgramCache]: Analyzing trace with hash -381009281, now seen corresponding path program 1 times [2023-12-15 19:53:28,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:53:28,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264410657] [2023-12-15 19:53:28,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:53:28,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:53:28,706 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:53:28,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614426208] [2023-12-15 19:53:28,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:53:28,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:53:28,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:53:28,710 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:53:28,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:53:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:53:29,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 19:53:29,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:53:29,122 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-12-15 19:53:29,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:53:29,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:53:29,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264410657] [2023-12-15 19:53:29,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:53:29,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614426208] [2023-12-15 19:53:29,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614426208] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:53:29,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:53:29,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:53:29,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109522285] [2023-12-15 19:53:29,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:53:29,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:53:29,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:53:29,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:53:29,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:53:29,171 INFO L87 Difference]: Start difference. First operand has 238 states, 151 states have (on average 1.5894039735099337) internal successors, (240), 152 states have internal predecessors, (240), 84 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) Second operand has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 19:53:29,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:53:29,264 INFO L93 Difference]: Finished difference Result 473 states and 898 transitions. [2023-12-15 19:53:29,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:53:29,268 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 521 [2023-12-15 19:53:29,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:53:29,286 INFO L225 Difference]: With dead ends: 473 [2023-12-15 19:53:29,286 INFO L226 Difference]: Without dead ends: 236 [2023-12-15 19:53:29,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:53:29,292 INFO L413 NwaCegarLoop]: 398 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, 398 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:53:29,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 398 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:53:29,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-12-15 19:53:29,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2023-12-15 19:53:29,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 150 states have (on average 1.5533333333333332) internal successors, (233), 150 states have internal predecessors, (233), 84 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-15 19:53:29,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 401 transitions. [2023-12-15 19:53:29,382 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 401 transitions. Word has length 521 [2023-12-15 19:53:29,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:53:29,383 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 401 transitions. [2023-12-15 19:53:29,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 19:53:29,384 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 401 transitions. [2023-12-15 19:53:29,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2023-12-15 19:53:29,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:53:29,392 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:53:29,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 19:53:29,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 19:53:29,599 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:53:29,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:53:29,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1558152765, now seen corresponding path program 1 times [2023-12-15 19:53:29,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:53:29,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988694782] [2023-12-15 19:53:29,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:53:29,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:53:29,701 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:53:29,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [317908545] [2023-12-15 19:53:29,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:53:29,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:53:29,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:53:29,703 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:53:29,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:53:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:53:29,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:53:29,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:53:30,043 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-12-15 19:53:30,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:53:30,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:53:30,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988694782] [2023-12-15 19:53:30,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:53:30,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317908545] [2023-12-15 19:53:30,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317908545] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:53:30,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:53:30,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:53:30,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911667528] [2023-12-15 19:53:30,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:53:30,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:53:30,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:53:30,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:53:30,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:53:30,050 INFO L87 Difference]: Start difference. First operand 236 states and 401 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 19:53:30,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:53:30,120 INFO L93 Difference]: Finished difference Result 594 states and 1014 transitions. [2023-12-15 19:53:30,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:53:30,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 521 [2023-12-15 19:53:30,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:53:30,125 INFO L225 Difference]: With dead ends: 594 [2023-12-15 19:53:30,126 INFO L226 Difference]: Without dead ends: 359 [2023-12-15 19:53:30,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:53:30,129 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 220 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:53:30,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 986 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:53:30,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-12-15 19:53:30,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 356. [2023-12-15 19:53:30,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 253 states have (on average 1.6245059288537549) internal successors, (411), 254 states have internal predecessors, (411), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-15 19:53:30,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 611 transitions. [2023-12-15 19:53:30,176 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 611 transitions. Word has length 521 [2023-12-15 19:53:30,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:53:30,179 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 611 transitions. [2023-12-15 19:53:30,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 19:53:30,179 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 611 transitions. [2023-12-15 19:53:30,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2023-12-15 19:53:30,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:53:30,185 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:53:30,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 19:53:30,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 19:53:30,391 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:53:30,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:53:30,392 INFO L85 PathProgramCache]: Analyzing trace with hash -591539171, now seen corresponding path program 1 times [2023-12-15 19:53:30,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:53:30,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257521460] [2023-12-15 19:53:30,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:53:30,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:53:30,489 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:53:30,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [483778271] [2023-12-15 19:53:30,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:53:30,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:53:30,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:53:30,491 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:53:30,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 19:53:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:53:30,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:53:30,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:53:30,867 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-12-15 19:53:30,867 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:53:30,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:53:30,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257521460] [2023-12-15 19:53:30,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:53:30,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483778271] [2023-12-15 19:53:30,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483778271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:53:30,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:53:30,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 19:53:30,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075003693] [2023-12-15 19:53:30,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:53:30,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:53:30,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:53:30,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:53:30,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:53:30,870 INFO L87 Difference]: Start difference. First operand 356 states and 611 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 19:53:30,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:53:30,936 INFO L93 Difference]: Finished difference Result 965 states and 1670 transitions. [2023-12-15 19:53:30,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 19:53:30,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 522 [2023-12-15 19:53:30,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:53:30,941 INFO L225 Difference]: With dead ends: 965 [2023-12-15 19:53:30,941 INFO L226 Difference]: Without dead ends: 610 [2023-12-15 19:53:30,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:53:30,942 INFO L413 NwaCegarLoop]: 730 mSDtfsCounter, 399 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 2139 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:53:30,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 2139 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:53:30,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2023-12-15 19:53:30,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 356. [2023-12-15 19:53:30,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 253 states have (on average 1.616600790513834) internal successors, (409), 254 states have internal predecessors, (409), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-15 19:53:30,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2023-12-15 19:53:30,985 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 522 [2023-12-15 19:53:30,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:53:30,985 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2023-12-15 19:53:30,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 19:53:30,986 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2023-12-15 19:53:30,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2023-12-15 19:53:30,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:53:30,990 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:53:31,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 19:53:31,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:53:31,199 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:53:31,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:53:31,200 INFO L85 PathProgramCache]: Analyzing trace with hash 2007095778, now seen corresponding path program 1 times [2023-12-15 19:53:31,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:53:31,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789557979] [2023-12-15 19:53:31,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:53:31,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:53:31,255 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:53:31,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [958622105] [2023-12-15 19:53:31,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:53:31,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:53:31,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:53:31,257 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:53:31,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 19:53:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:53:31,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 19:53:31,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:53:31,775 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-12-15 19:53:31,775 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:53:31,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:53:31,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789557979] [2023-12-15 19:53:31,776 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:53:31,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958622105] [2023-12-15 19:53:31,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958622105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:53:31,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:53:31,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 19:53:31,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134955660] [2023-12-15 19:53:31,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:53:31,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:53:31,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:53:31,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:53:31,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:53:31,780 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 19:53:33,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:53:33,345 INFO L93 Difference]: Finished difference Result 2271 states and 3919 transitions. [2023-12-15 19:53:33,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 19:53:33,346 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 524 [2023-12-15 19:53:33,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:53:33,354 INFO L225 Difference]: With dead ends: 2271 [2023-12-15 19:53:33,354 INFO L226 Difference]: Without dead ends: 1916 [2023-12-15 19:53:33,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-12-15 19:53:33,357 INFO L413 NwaCegarLoop]: 966 mSDtfsCounter, 1863 mSDsluCounter, 2385 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1863 SdHoareTripleChecker+Valid, 3351 SdHoareTripleChecker+Invalid, 1820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:53:33,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1863 Valid, 3351 Invalid, 1820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:53:33,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2023-12-15 19:53:33,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1333. [2023-12-15 19:53:33,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 973 states have (on average 1.6248715313463515) internal successors, (1581), 978 states have internal predecessors, (1581), 349 states have call successors, (349), 10 states have call predecessors, (349), 10 states have return successors, (349), 344 states have call predecessors, (349), 349 states have call successors, (349) [2023-12-15 19:53:33,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 2279 transitions. [2023-12-15 19:53:33,482 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 2279 transitions. Word has length 524 [2023-12-15 19:53:33,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:53:33,483 INFO L495 AbstractCegarLoop]: Abstraction has 1333 states and 2279 transitions. [2023-12-15 19:53:33,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 19:53:33,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 2279 transitions. [2023-12-15 19:53:33,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2023-12-15 19:53:33,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:53:33,487 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:53:33,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 19:53:33,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:53:33,696 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:53:33,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:53:33,696 INFO L85 PathProgramCache]: Analyzing trace with hash 768723490, now seen corresponding path program 1 times [2023-12-15 19:53:33,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:53:33,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687165955] [2023-12-15 19:53:33,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:53:33,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:53:33,746 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:53:33,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552771568] [2023-12-15 19:53:33,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:53:33,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:53:33,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:53:33,748 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:53:33,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 19:53:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:53:33,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 1157 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:53:34,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:53:34,266 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 7049 proven. 120 refuted. 0 times theorem prover too weak. 6775 trivial. 0 not checked. [2023-12-15 19:53:34,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:53:34,526 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 129 proven. 120 refuted. 0 times theorem prover too weak. 13695 trivial. 0 not checked. [2023-12-15 19:53:34,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:53:34,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687165955] [2023-12-15 19:53:34,526 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:53:34,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552771568] [2023-12-15 19:53:34,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552771568] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:53:34,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:53:34,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 19:53:34,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601035459] [2023-12-15 19:53:34,527 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:53:34,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:53:34,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:53:34,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:53:34,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:53:34,529 INFO L87 Difference]: Start difference. First operand 1333 states and 2279 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 2 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2023-12-15 19:53:34,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:53:34,897 INFO L93 Difference]: Finished difference Result 1981 states and 3388 transitions. [2023-12-15 19:53:34,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:53:34,897 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 2 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) Word has length 524 [2023-12-15 19:53:34,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:53:34,900 INFO L225 Difference]: With dead ends: 1981 [2023-12-15 19:53:34,900 INFO L226 Difference]: Without dead ends: 649 [2023-12-15 19:53:34,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1050 GetRequests, 1040 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:53:34,905 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 427 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:53:34,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 733 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:53:34,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2023-12-15 19:53:34,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 611. [2023-12-15 19:53:34,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 456 states have (on average 1.6008771929824561) internal successors, (730), 459 states have internal predecessors, (730), 149 states have call successors, (149), 5 states have call predecessors, (149), 5 states have return successors, (149), 146 states have call predecessors, (149), 149 states have call successors, (149) [2023-12-15 19:53:34,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1028 transitions. [2023-12-15 19:53:34,934 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1028 transitions. Word has length 524 [2023-12-15 19:53:34,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:53:34,935 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 1028 transitions. [2023-12-15 19:53:34,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 2 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2023-12-15 19:53:34,935 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1028 transitions. [2023-12-15 19:53:34,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2023-12-15 19:53:34,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:53:34,939 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:53:34,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 19:53:35,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:53:35,149 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:53:35,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:53:35,149 INFO L85 PathProgramCache]: Analyzing trace with hash -965311392, now seen corresponding path program 1 times [2023-12-15 19:53:35,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:53:35,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399091205] [2023-12-15 19:53:35,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:53:35,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:53:35,185 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:53:35,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758498510] [2023-12-15 19:53:35,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:53:35,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:53:35,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:53:35,186 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:53:35,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 19:53:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:53:35,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 19:53:35,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:53:35,778 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 6593 proven. 156 refuted. 0 times theorem prover too weak. 7195 trivial. 0 not checked. [2023-12-15 19:53:35,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:53:36,121 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 93 proven. 156 refuted. 0 times theorem prover too weak. 13695 trivial. 0 not checked. [2023-12-15 19:53:36,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:53:36,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399091205] [2023-12-15 19:53:36,122 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:53:36,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758498510] [2023-12-15 19:53:36,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758498510] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:53:36,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:53:36,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-15 19:53:36,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182442584] [2023-12-15 19:53:36,123 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:53:36,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 19:53:36,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:53:36,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 19:53:36,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-15 19:53:36,125 INFO L87 Difference]: Start difference. First operand 611 states and 1028 transitions. Second operand has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 3 states have call successors, (136), 2 states have call predecessors, (136), 4 states have return successors, (137), 3 states have call predecessors, (137), 3 states have call successors, (137) [2023-12-15 19:53:36,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:53:36,788 INFO L93 Difference]: Finished difference Result 1703 states and 2842 transitions. [2023-12-15 19:53:36,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 19:53:36,788 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 3 states have call successors, (136), 2 states have call predecessors, (136), 4 states have return successors, (137), 3 states have call predecessors, (137), 3 states have call successors, (137) Word has length 524 [2023-12-15 19:53:36,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:53:36,793 INFO L225 Difference]: With dead ends: 1703 [2023-12-15 19:53:36,793 INFO L226 Difference]: Without dead ends: 1093 [2023-12-15 19:53:36,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1053 GetRequests, 1038 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=171, Unknown=0, NotChecked=0, Total=272 [2023-12-15 19:53:36,796 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 744 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:53:36,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1089 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:53:36,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2023-12-15 19:53:36,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 1071. [2023-12-15 19:53:36,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 816 states have (on average 1.5980392156862746) internal successors, (1304), 823 states have internal predecessors, (1304), 243 states have call successors, (243), 11 states have call predecessors, (243), 11 states have return successors, (243), 236 states have call predecessors, (243), 243 states have call successors, (243) [2023-12-15 19:53:36,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1790 transitions. [2023-12-15 19:53:36,844 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1790 transitions. Word has length 524 [2023-12-15 19:53:36,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:53:36,845 INFO L495 AbstractCegarLoop]: Abstraction has 1071 states and 1790 transitions. [2023-12-15 19:53:36,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 3 states have call successors, (136), 2 states have call predecessors, (136), 4 states have return successors, (137), 3 states have call predecessors, (137), 3 states have call successors, (137) [2023-12-15 19:53:36,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1790 transitions. [2023-12-15 19:53:36,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2023-12-15 19:53:36,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:53:36,849 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:53:36,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 19:53:37,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:53:37,067 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:53:37,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:53:37,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1957848606, now seen corresponding path program 1 times [2023-12-15 19:53:37,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:53:37,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925437577] [2023-12-15 19:53:37,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:53:37,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:53:37,103 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:53:37,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442312711] [2023-12-15 19:53:37,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:53:37,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:53:37,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:53:37,105 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:53:37,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 19:53:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:53:37,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 19:53:37,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:53:37,917 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-12-15 19:53:37,917 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:53:37,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:53:37,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925437577] [2023-12-15 19:53:37,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:53:37,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442312711] [2023-12-15 19:53:37,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442312711] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:53:37,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:53:37,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 19:53:37,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391494672] [2023-12-15 19:53:37,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:53:37,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 19:53:37,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:53:37,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 19:53:37,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:53:37,919 INFO L87 Difference]: Start difference. First operand 1071 states and 1790 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 19:53:38,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:53:38,643 INFO L93 Difference]: Finished difference Result 4542 states and 7578 transitions. [2023-12-15 19:53:38,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 19:53:38,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 524 [2023-12-15 19:53:38,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:53:38,664 INFO L225 Difference]: With dead ends: 4542 [2023-12-15 19:53:38,664 INFO L226 Difference]: Without dead ends: 3472 [2023-12-15 19:53:38,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:53:38,669 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 1172 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:53:38,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1172 Valid, 1461 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:53:38,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3472 states. [2023-12-15 19:53:38,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3472 to 2185. [2023-12-15 19:53:38,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2185 states, 1676 states have (on average 1.5930787589498807) internal successors, (2670), 1690 states have internal predecessors, (2670), 486 states have call successors, (486), 22 states have call predecessors, (486), 22 states have return successors, (486), 472 states have call predecessors, (486), 486 states have call successors, (486) [2023-12-15 19:53:38,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2185 states to 2185 states and 3642 transitions. [2023-12-15 19:53:38,824 INFO L78 Accepts]: Start accepts. Automaton has 2185 states and 3642 transitions. Word has length 524 [2023-12-15 19:53:38,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:53:38,825 INFO L495 AbstractCegarLoop]: Abstraction has 2185 states and 3642 transitions. [2023-12-15 19:53:38,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 19:53:38,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2185 states and 3642 transitions. [2023-12-15 19:53:38,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2023-12-15 19:53:38,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:53:38,829 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:53:38,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 19:53:39,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:53:39,036 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:53:39,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:53:39,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1823835100, now seen corresponding path program 1 times [2023-12-15 19:53:39,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:53:39,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695868322] [2023-12-15 19:53:39,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:53:39,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:53:39,085 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:53:39,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1119144398] [2023-12-15 19:53:39,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:53:39,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:53:39,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:53:39,086 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:53:39,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 19:53:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:53:39,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 19:53:39,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:53:55,599 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-12-15 19:53:55,599 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:53:55,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:53:55,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695868322] [2023-12-15 19:53:55,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:53:55,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119144398] [2023-12-15 19:53:55,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119144398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:53:55,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:53:55,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 19:53:55,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239867852] [2023-12-15 19:53:55,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:53:55,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 19:53:55,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:53:55,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 19:53:55,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-15 19:53:55,601 INFO L87 Difference]: Start difference. First operand 2185 states and 3642 transitions. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 19:54:00,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:54:00,610 INFO L93 Difference]: Finished difference Result 6441 states and 10263 transitions. [2023-12-15 19:54:00,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 19:54:00,611 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 524 [2023-12-15 19:54:00,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:54:00,625 INFO L225 Difference]: With dead ends: 6441 [2023-12-15 19:54:00,625 INFO L226 Difference]: Without dead ends: 4257 [2023-12-15 19:54:00,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2023-12-15 19:54:00,633 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 212 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:54:00,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 1633 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 19:54:00,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4257 states. [2023-12-15 19:54:00,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4257 to 3385. [2023-12-15 19:54:00,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3385 states, 2828 states have (on average 1.5381895332390383) internal successors, (4350), 2858 states have internal predecessors, (4350), 518 states have call successors, (518), 38 states have call predecessors, (518), 38 states have return successors, (518), 488 states have call predecessors, (518), 518 states have call successors, (518) [2023-12-15 19:54:00,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3385 states to 3385 states and 5386 transitions. [2023-12-15 19:54:00,812 INFO L78 Accepts]: Start accepts. Automaton has 3385 states and 5386 transitions. Word has length 524 [2023-12-15 19:54:00,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:54:00,813 INFO L495 AbstractCegarLoop]: Abstraction has 3385 states and 5386 transitions. [2023-12-15 19:54:00,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 19:54:00,813 INFO L276 IsEmpty]: Start isEmpty. Operand 3385 states and 5386 transitions. [2023-12-15 19:54:00,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2023-12-15 19:54:00,818 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:54:00,819 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:54:00,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 19:54:01,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 19:54:01,025 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:54:01,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:54:01,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1450063842, now seen corresponding path program 1 times [2023-12-15 19:54:01,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:54:01,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373054698] [2023-12-15 19:54:01,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:54:01,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:54:01,080 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:54:01,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1496496418] [2023-12-15 19:54:01,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:54:01,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:54:01,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:54:01,098 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:54:01,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 19:54:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:54:01,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:54:01,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:54:01,367 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-12-15 19:54:01,368 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:54:01,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:54:01,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373054698] [2023-12-15 19:54:01,368 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:54:01,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496496418] [2023-12-15 19:54:01,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496496418] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:54:01,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:54:01,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:54:01,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178322633] [2023-12-15 19:54:01,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:54:01,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:54:01,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:54:01,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:54:01,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:54:01,372 INFO L87 Difference]: Start difference. First operand 3385 states and 5386 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 19:54:01,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:54:01,644 INFO L93 Difference]: Finished difference Result 8905 states and 14220 transitions. [2023-12-15 19:54:01,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:54:01,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 524 [2023-12-15 19:54:01,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:54:01,662 INFO L225 Difference]: With dead ends: 8905 [2023-12-15 19:54:01,663 INFO L226 Difference]: Without dead ends: 5521 [2023-12-15 19:54:01,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:54:01,672 INFO L413 NwaCegarLoop]: 751 mSDtfsCounter, 382 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:54:01,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 1110 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:54:01,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5521 states. [2023-12-15 19:54:01,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5521 to 3625. [2023-12-15 19:54:01,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3625 states, 3068 states have (on average 1.4960886571056062) internal successors, (4590), 3098 states have internal predecessors, (4590), 518 states have call successors, (518), 38 states have call predecessors, (518), 38 states have return successors, (518), 488 states have call predecessors, (518), 518 states have call successors, (518) [2023-12-15 19:54:01,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3625 states to 3625 states and 5626 transitions. [2023-12-15 19:54:01,897 INFO L78 Accepts]: Start accepts. Automaton has 3625 states and 5626 transitions. Word has length 524 [2023-12-15 19:54:01,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:54:01,899 INFO L495 AbstractCegarLoop]: Abstraction has 3625 states and 5626 transitions. [2023-12-15 19:54:01,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 19:54:01,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3625 states and 5626 transitions. [2023-12-15 19:54:01,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2023-12-15 19:54:01,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:54:01,906 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:54:01,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 19:54:02,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:54:02,120 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:54:02,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:54:02,120 INFO L85 PathProgramCache]: Analyzing trace with hash -170309606, now seen corresponding path program 1 times [2023-12-15 19:54:02,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:54:02,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145668967] [2023-12-15 19:54:02,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:54:02,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:54:02,164 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:54:02,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [893048666] [2023-12-15 19:54:02,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:54:02,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:54:02,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:54:02,166 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:54:02,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 19:54:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:54:02,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 19:54:02,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:54:02,888 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-12-15 19:54:02,889 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:54:02,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:54:02,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145668967] [2023-12-15 19:54:02,889 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:54:02,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893048666] [2023-12-15 19:54:02,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893048666] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:54:02,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:54:02,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:54:02,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649129716] [2023-12-15 19:54:02,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:54:02,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:54:02,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:54:02,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:54:02,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:54:02,892 INFO L87 Difference]: Start difference. First operand 3625 states and 5626 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 19:54:03,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:54:03,404 INFO L93 Difference]: Finished difference Result 11015 states and 17243 transitions. [2023-12-15 19:54:03,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 19:54:03,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 524 [2023-12-15 19:54:03,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:54:03,431 INFO L225 Difference]: With dead ends: 11015 [2023-12-15 19:54:03,431 INFO L226 Difference]: Without dead ends: 7391 [2023-12-15 19:54:03,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:54:03,441 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 523 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:54:03,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 1971 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:54:03,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7391 states. [2023-12-15 19:54:03,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7391 to 6853. [2023-12-15 19:54:03,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6853 states, 5651 states have (on average 1.4763758626791719) internal successors, (8343), 5712 states have internal predecessors, (8343), 1120 states have call successors, (1120), 81 states have call predecessors, (1120), 81 states have return successors, (1120), 1059 states have call predecessors, (1120), 1120 states have call successors, (1120) [2023-12-15 19:54:03,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6853 states to 6853 states and 10583 transitions. [2023-12-15 19:54:03,927 INFO L78 Accepts]: Start accepts. Automaton has 6853 states and 10583 transitions. Word has length 524 [2023-12-15 19:54:03,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:54:03,928 INFO L495 AbstractCegarLoop]: Abstraction has 6853 states and 10583 transitions. [2023-12-15 19:54:03,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 19:54:03,929 INFO L276 IsEmpty]: Start isEmpty. Operand 6853 states and 10583 transitions. [2023-12-15 19:54:03,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2023-12-15 19:54:03,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:54:03,938 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:54:03,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 19:54:04,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 19:54:04,145 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:54:04,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:54:04,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1206661119, now seen corresponding path program 1 times [2023-12-15 19:54:04,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:54:04,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516117752] [2023-12-15 19:54:04,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:54:04,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:54:04,182 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:54:04,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [344065187] [2023-12-15 19:54:04,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:54:04,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:54:04,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:54:04,184 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:54:04,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 19:54:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:54:04,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-15 19:54:04,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:54:05,616 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-12-15 19:54:05,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:54:05,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:54:05,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516117752] [2023-12-15 19:54:05,616 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:54:05,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344065187] [2023-12-15 19:54:05,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344065187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:54:05,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:54:05,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 19:54:05,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878287185] [2023-12-15 19:54:05,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:54:05,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:54:05,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:54:05,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:54:05,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:54:05,618 INFO L87 Difference]: Start difference. First operand 6853 states and 10583 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 6 states have internal predecessors, (108), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 19:54:07,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:54:07,404 INFO L93 Difference]: Finished difference Result 22157 states and 33670 transitions. [2023-12-15 19:54:07,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 19:54:07,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 6 states have internal predecessors, (108), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 525 [2023-12-15 19:54:07,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:54:07,440 INFO L225 Difference]: With dead ends: 22157 [2023-12-15 19:54:07,440 INFO L226 Difference]: Without dead ends: 15455 [2023-12-15 19:54:07,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2023-12-15 19:54:07,457 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 1758 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 741 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1758 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 741 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:54:07,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1758 Valid, 1791 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [741 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 19:54:07,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15455 states. [2023-12-15 19:54:08,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15455 to 10089. [2023-12-15 19:54:08,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10089 states, 8331 states have (on average 1.445564758132277) internal successors, (12043), 8422 states have internal predecessors, (12043), 1638 states have call successors, (1638), 119 states have call predecessors, (1638), 119 states have return successors, (1638), 1547 states have call predecessors, (1638), 1638 states have call successors, (1638) [2023-12-15 19:54:08,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10089 states to 10089 states and 15319 transitions. [2023-12-15 19:54:08,299 INFO L78 Accepts]: Start accepts. Automaton has 10089 states and 15319 transitions. Word has length 525 [2023-12-15 19:54:08,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:54:08,299 INFO L495 AbstractCegarLoop]: Abstraction has 10089 states and 15319 transitions. [2023-12-15 19:54:08,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 6 states have internal predecessors, (108), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 19:54:08,299 INFO L276 IsEmpty]: Start isEmpty. Operand 10089 states and 15319 transitions. [2023-12-15 19:54:08,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-15 19:54:08,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:54:08,307 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:54:08,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 19:54:08,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 19:54:08,514 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:54:08,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:54:08,514 INFO L85 PathProgramCache]: Analyzing trace with hash 351859590, now seen corresponding path program 1 times [2023-12-15 19:54:08,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:54:08,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827330306] [2023-12-15 19:54:08,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:54:08,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:54:08,554 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:54:08,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [829225421] [2023-12-15 19:54:08,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:54:08,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:54:08,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:54:08,566 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:54:08,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 19:54:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:54:08,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 19:54:08,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:54:09,279 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 4193 proven. 204 refuted. 0 times theorem prover too weak. 9547 trivial. 0 not checked. [2023-12-15 19:54:09,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:54:09,610 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 45 proven. 204 refuted. 0 times theorem prover too weak. 13695 trivial. 0 not checked. [2023-12-15 19:54:09,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:54:09,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827330306] [2023-12-15 19:54:09,610 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:54:09,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829225421] [2023-12-15 19:54:09,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829225421] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:54:09,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:54:09,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-15 19:54:09,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716837830] [2023-12-15 19:54:09,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:54:09,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 19:54:09,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:54:09,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 19:54:09,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:54:09,612 INFO L87 Difference]: Start difference. First operand 10089 states and 15319 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 2 states have call successors, (152), 2 states have call predecessors, (152), 4 states have return successors, (153), 2 states have call predecessors, (153), 2 states have call successors, (153) [2023-12-15 19:54:10,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:54:10,533 INFO L93 Difference]: Finished difference Result 15753 states and 23859 transitions. [2023-12-15 19:54:10,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 19:54:10,534 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 2 states have call successors, (152), 2 states have call predecessors, (152), 4 states have return successors, (153), 2 states have call predecessors, (153), 2 states have call successors, (153) Word has length 526 [2023-12-15 19:54:10,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:54:10,545 INFO L225 Difference]: With dead ends: 15753 [2023-12-15 19:54:10,545 INFO L226 Difference]: Without dead ends: 5815 [2023-12-15 19:54:10,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1058 GetRequests, 1043 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-12-15 19:54:10,560 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 457 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:54:10,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 649 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:54:10,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5815 states. [2023-12-15 19:54:11,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5815 to 5543. [2023-12-15 19:54:11,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5543 states, 4356 states have (on average 1.3999081726354454) internal successors, (6098), 4417 states have internal predecessors, (6098), 1088 states have call successors, (1088), 98 states have call predecessors, (1088), 98 states have return successors, (1088), 1027 states have call predecessors, (1088), 1088 states have call successors, (1088) [2023-12-15 19:54:11,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5543 states to 5543 states and 8274 transitions. [2023-12-15 19:54:11,026 INFO L78 Accepts]: Start accepts. Automaton has 5543 states and 8274 transitions. Word has length 526 [2023-12-15 19:54:11,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:54:11,027 INFO L495 AbstractCegarLoop]: Abstraction has 5543 states and 8274 transitions. [2023-12-15 19:54:11,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 2 states have call successors, (152), 2 states have call predecessors, (152), 4 states have return successors, (153), 2 states have call predecessors, (153), 2 states have call successors, (153) [2023-12-15 19:54:11,027 INFO L276 IsEmpty]: Start isEmpty. Operand 5543 states and 8274 transitions. [2023-12-15 19:54:11,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-15 19:54:11,033 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:54:11,033 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:54:11,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 19:54:11,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 19:54:11,241 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:54:11,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:54:11,242 INFO L85 PathProgramCache]: Analyzing trace with hash -201406079, now seen corresponding path program 1 times [2023-12-15 19:54:11,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:54:11,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627309724] [2023-12-15 19:54:11,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:54:11,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:54:11,280 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:54:11,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [297178337] [2023-12-15 19:54:11,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:54:11,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:54:11,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:54:11,283 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:54:11,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 19:54:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:54:11,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:54:11,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:54:11,628 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-12-15 19:54:11,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:54:11,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:54:11,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627309724] [2023-12-15 19:54:11,628 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:54:11,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297178337] [2023-12-15 19:54:11,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297178337] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:54:11,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:54:11,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:54:11,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536989948] [2023-12-15 19:54:11,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:54:11,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:54:11,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:54:11,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:54:11,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:54:11,632 INFO L87 Difference]: Start difference. First operand 5543 states and 8274 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 19:54:11,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:54:11,997 INFO L93 Difference]: Finished difference Result 11365 states and 16828 transitions. [2023-12-15 19:54:11,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 19:54:11,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 527 [2023-12-15 19:54:11,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:54:12,011 INFO L225 Difference]: With dead ends: 11365 [2023-12-15 19:54:12,012 INFO L226 Difference]: Without dead ends: 5881 [2023-12-15 19:54:12,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:54:12,024 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 22 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:54:12,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1090 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:54:12,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5881 states. [2023-12-15 19:54:12,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5881 to 5591. [2023-12-15 19:54:12,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5591 states, 4404 states have (on average 1.3846503178928247) internal successors, (6098), 4465 states have internal predecessors, (6098), 1088 states have call successors, (1088), 98 states have call predecessors, (1088), 98 states have return successors, (1088), 1027 states have call predecessors, (1088), 1088 states have call successors, (1088) [2023-12-15 19:54:12,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5591 states to 5591 states and 8274 transitions. [2023-12-15 19:54:12,572 INFO L78 Accepts]: Start accepts. Automaton has 5591 states and 8274 transitions. Word has length 527 [2023-12-15 19:54:12,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:54:12,572 INFO L495 AbstractCegarLoop]: Abstraction has 5591 states and 8274 transitions. [2023-12-15 19:54:12,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-12-15 19:54:12,572 INFO L276 IsEmpty]: Start isEmpty. Operand 5591 states and 8274 transitions. [2023-12-15 19:54:12,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2023-12-15 19:54:12,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:54:12,577 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:54:12,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 19:54:12,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 19:54:12,788 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:54:12,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:54:12,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1161268650, now seen corresponding path program 1 times [2023-12-15 19:54:12,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:54:12,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016622395] [2023-12-15 19:54:12,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:54:12,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:54:12,836 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:54:12,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1013666356] [2023-12-15 19:54:12,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:54:12,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:54:12,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:54:12,853 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:54:12,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 19:54:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:54:13,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 1168 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 19:54:13,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-15 19:54:29,392 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:54:29,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-15 19:54:29,431 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:54:29,431 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:54:29,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:54:29,600 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 529 with TraceHistMax 84,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-8-2-2-2-2-2-2-2-2-2-2-2-2-1 context. [2023-12-15 19:54:29,604 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:54:29,609 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:54:29,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:54:29 BoogieIcfgContainer [2023-12-15 19:54:29,613 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:54:29,614 INFO L158 Benchmark]: Toolchain (without parser) took 62801.17ms. Allocated memory was 302.0MB in the beginning and 1.2GB in the end (delta: 872.4MB). Free memory was 249.1MB in the beginning and 737.7MB in the end (delta: -488.6MB). Peak memory consumption was 710.4MB. Max. memory is 8.0GB. [2023-12-15 19:54:29,614 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 222.3MB. Free memory was 173.1MB in the beginning and 173.0MB in the end (delta: 129.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:54:29,614 INFO L158 Benchmark]: CACSL2BoogieTranslator took 410.17ms. Allocated memory is still 302.0MB. Free memory was 248.8MB in the beginning and 224.0MB in the end (delta: 24.8MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-15 19:54:29,615 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.89ms. Allocated memory is still 302.0MB. Free memory was 224.0MB in the beginning and 212.5MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-15 19:54:29,615 INFO L158 Benchmark]: Boogie Preprocessor took 139.09ms. Allocated memory is still 302.0MB. Free memory was 212.5MB in the beginning and 252.5MB in the end (delta: -40.0MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. [2023-12-15 19:54:29,615 INFO L158 Benchmark]: RCFGBuilder took 857.69ms. Allocated memory is still 302.0MB. Free memory was 252.5MB in the beginning and 181.7MB in the end (delta: 70.8MB). Peak memory consumption was 70.3MB. Max. memory is 8.0GB. [2023-12-15 19:54:29,615 INFO L158 Benchmark]: TraceAbstraction took 61298.84ms. Allocated memory was 302.0MB in the beginning and 1.2GB in the end (delta: 872.4MB). Free memory was 181.2MB in the beginning and 737.7MB in the end (delta: -556.5MB). Peak memory consumption was 640.9MB. Max. memory is 8.0GB. [2023-12-15 19:54:29,617 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 222.3MB. Free memory was 173.1MB in the beginning and 173.0MB in the end (delta: 129.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 410.17ms. Allocated memory is still 302.0MB. Free memory was 248.8MB in the beginning and 224.0MB in the end (delta: 24.8MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 87.89ms. Allocated memory is still 302.0MB. Free memory was 224.0MB in the beginning and 212.5MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 139.09ms. Allocated memory is still 302.0MB. Free memory was 212.5MB in the beginning and 252.5MB in the end (delta: -40.0MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. * RCFGBuilder took 857.69ms. Allocated memory is still 302.0MB. Free memory was 252.5MB in the beginning and 181.7MB in the end (delta: 70.8MB). Peak memory consumption was 70.3MB. Max. memory is 8.0GB. * TraceAbstraction took 61298.84ms. Allocated memory was 302.0MB in the beginning and 1.2GB in the end (delta: 872.4MB). Free memory was 181.2MB in the beginning and 737.7MB in the end (delta: -556.5MB). Peak memory consumption was 640.9MB. 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 529 with TraceHistMax 84,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-8-2-2-2-2-2-2-2-2-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 238 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 61.2s, OverallIterations: 14, TraceHistogramMax: 84, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 12.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8285 SdHoareTripleChecker+Valid, 5.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8179 mSDsluCounter, 18401 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11675 mSDsCounter, 1836 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5010 IncrementalHoareTripleChecker+Invalid, 6846 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1836 mSolverCounterUnsat, 6726 mSDtfsCounter, 5010 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8417 GetRequests, 8321 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10089occurred in iteration=11, InterpolantAutomatonStates: 101, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 11421 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 21.0s InterpolantComputationTime, 6810 NumberOfCodeBlocks, 6810 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 8368 ConstructedInterpolants, 0 QuantifiedInterpolants, 25486 SizeOfPredicates, 48 NumberOfNonLiveVariables, 15058 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 16 InterpolantComputations, 10 PerfectInterpolantSequences, 222144/223104 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