/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 19:29:34,014 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 19:29:34,052 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 19:29:34,054 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 19:29:34,055 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 19:29:34,069 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 19:29:34,069 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 19:29:34,070 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 19:29:34,070 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 19:29:34,070 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 19:29:34,071 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 19:29:34,071 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 19:29:34,071 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 19:29:34,071 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 19:29:34,072 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 19:29:34,072 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 19:29:34,072 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 19:29:34,072 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 19:29:34,072 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 19:29:34,073 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 19:29:34,073 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 19:29:34,077 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 19:29:34,077 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 19:29:34,077 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 19:29:34,077 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 19:29:34,078 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 19:29:34,078 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 19:29:34,078 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 19:29:34,078 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 19:29:34,078 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 19:29:34,078 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 19:29:34,079 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 19:29:34,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 19:29:34,079 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 19:29:34,079 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 19:29:34,079 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 19:29:34,079 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 19:29:34,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 19:29:34,080 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 19:29:34,080 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 19:29:34,080 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 19:29:34,081 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 19:29:34,081 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 19:29:34,081 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 19:29:34,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 19:29:34,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 19:29:34,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 19:29:34,274 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 19:29:34,274 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 19:29:34,276 INFO L431 ainManager$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-5.i [2023-12-20 19:29:35,239 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 19:29:35,412 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 19:29:35,412 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-5.i [2023-12-20 19:29:35,419 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2940f3d6/7d2f8ea5f6a64a2daa97dd199c63ca0a/FLAG0e974067e [2023-12-20 19:29:35,427 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2940f3d6/7d2f8ea5f6a64a2daa97dd199c63ca0a [2023-12-20 19:29:35,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 19:29:35,431 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 19:29:35,432 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 19:29:35,432 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 19:29:35,435 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 19:29:35,435 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 07:29:35" (1/1) ... [2023-12-20 19:29:35,436 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ad50a61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:29:35, skipping insertion in model container [2023-12-20 19:29:35,436 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 07:29:35" (1/1) ... [2023-12-20 19:29:35,468 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 19:29:35,588 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-5.i[915,928] [2023-12-20 19:29:35,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 19:29:35,722 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 19:29:35,731 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-5.i[915,928] [2023-12-20 19:29:35,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 19:29:35,794 INFO L206 MainTranslator]: Completed translation [2023-12-20 19:29:35,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:29:35 WrapperNode [2023-12-20 19:29:35,794 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 19:29:35,795 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 19:29:35,795 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 19:29:35,795 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 19:29:35,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:29:35" (1/1) ... [2023-12-20 19:29:35,813 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:29:35" (1/1) ... [2023-12-20 19:29:35,864 INFO L138 Inliner]: procedures = 26, calls = 80, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 454 [2023-12-20 19:29:35,865 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 19:29:35,865 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 19:29:35,865 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 19:29:35,865 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 19:29:35,881 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:29:35" (1/1) ... [2023-12-20 19:29:35,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:29:35" (1/1) ... [2023-12-20 19:29:35,894 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:29:35" (1/1) ... [2023-12-20 19:29:35,931 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 19:29:35,932 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:29:35" (1/1) ... [2023-12-20 19:29:35,932 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:29:35" (1/1) ... [2023-12-20 19:29:35,948 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:29:35" (1/1) ... [2023-12-20 19:29:35,951 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:29:35" (1/1) ... [2023-12-20 19:29:35,964 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:29:35" (1/1) ... [2023-12-20 19:29:35,968 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:29:35" (1/1) ... [2023-12-20 19:29:35,977 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 19:29:35,979 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 19:29:35,979 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 19:29:35,979 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 19:29:35,979 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:29:35" (1/1) ... [2023-12-20 19:29:35,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 19:29:35,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:29:36,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 19:29:36,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 19:29:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 19:29:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 19:29:36,044 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 19:29:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 19:29:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 19:29:36,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 19:29:36,155 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 19:29:36,158 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 19:29:36,657 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 19:29:36,690 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 19:29:36,690 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 19:29:36,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 07:29:36 BoogieIcfgContainer [2023-12-20 19:29:36,691 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 19:29:36,693 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 19:29:36,693 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 19:29:36,695 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 19:29:36,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 07:29:35" (1/3) ... [2023-12-20 19:29:36,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3310e6e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 07:29:36, skipping insertion in model container [2023-12-20 19:29:36,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:29:35" (2/3) ... [2023-12-20 19:29:36,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3310e6e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 07:29:36, skipping insertion in model container [2023-12-20 19:29:36,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 07:29:36" (3/3) ... [2023-12-20 19:29:36,697 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-5.i [2023-12-20 19:29:36,709 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 19:29:36,709 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 19:29:36,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 19:29:36,754 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;@76e1f8e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 19:29:36,755 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 19:29:36,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 184 states, 114 states have (on average 1.5263157894736843) internal successors, (174), 115 states have internal predecessors, (174), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-20 19:29:36,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-20 19:29:36,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:29:36,779 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:29:36,779 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:29:36,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:29:36,783 INFO L85 PathProgramCache]: Analyzing trace with hash 64895704, now seen corresponding path program 1 times [2023-12-20 19:29:36,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:29:36,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855554374] [2023-12-20 19:29:36,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:29:36,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:29:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:29:37,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:29:37,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855554374] [2023-12-20 19:29:37,023 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 19:29:37,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166541275] [2023-12-20 19:29:37,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:29:37,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:29:37,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:29:37,031 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 19:29:37,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 19:29:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:29:37,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-20 19:29:37,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:29:37,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2023-12-20 19:29:37,371 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:29:37,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166541275] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:29:37,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:29:37,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 19:29:37,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75999694] [2023-12-20 19:29:37,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:29:37,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 19:29:37,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:29:37,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 19:29:37,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 19:29:37,410 INFO L87 Difference]: Start difference. First operand has 184 states, 114 states have (on average 1.5263157894736843) internal successors, (174), 115 states have internal predecessors, (174), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Second operand has 2 states, 2 states have (on average 46.5) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2023-12-20 19:29:37,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:29:37,513 INFO L93 Difference]: Finished difference Result 365 states and 681 transitions. [2023-12-20 19:29:37,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 19:29:37,515 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 46.5) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) Word has length 423 [2023-12-20 19:29:37,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:29:37,526 INFO L225 Difference]: With dead ends: 365 [2023-12-20 19:29:37,526 INFO L226 Difference]: Without dead ends: 182 [2023-12-20 19:29:37,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 19:29:37,535 INFO L413 NwaCegarLoop]: 298 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, 298 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 19:29:37,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 298 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 19:29:37,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-12-20 19:29:37,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2023-12-20 19:29:37,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 113 states have (on average 1.4778761061946903) internal successors, (167), 113 states have internal predecessors, (167), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-20 19:29:37,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 301 transitions. [2023-12-20 19:29:37,597 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 301 transitions. Word has length 423 [2023-12-20 19:29:37,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:29:37,599 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 301 transitions. [2023-12-20 19:29:37,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 46.5) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2023-12-20 19:29:37,599 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 301 transitions. [2023-12-20 19:29:37,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-20 19:29:37,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:29:37,612 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:29:37,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 19:29:37,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-20 19:29:37,820 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:29:37,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:29:37,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1629020412, now seen corresponding path program 1 times [2023-12-20 19:29:37,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:29:37,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34323848] [2023-12-20 19:29:37,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:29:37,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:29:37,919 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:29:37,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183643961] [2023-12-20 19:29:37,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:29:37,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:29:37,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:29:37,921 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 19:29:37,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 19:29:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:29:38,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 19:29:38,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:29:38,357 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 3082 proven. 42 refuted. 0 times theorem prover too weak. 5720 trivial. 0 not checked. [2023-12-20 19:29:38,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 19:29:38,562 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 156 proven. 42 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2023-12-20 19:29:38,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:29:38,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34323848] [2023-12-20 19:29:38,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:29:38,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183643961] [2023-12-20 19:29:38,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183643961] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 19:29:38,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 19:29:38,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-20 19:29:38,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632365561] [2023-12-20 19:29:38,563 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 19:29:38,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 19:29:38,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:29:38,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 19:29:38,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 19:29:38,566 INFO L87 Difference]: Start difference. First operand 182 states and 301 transitions. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 3 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 3 states have call predecessors, (82), 3 states have call successors, (82) [2023-12-20 19:29:38,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:29:38,933 INFO L93 Difference]: Finished difference Result 369 states and 606 transitions. [2023-12-20 19:29:38,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 19:29:38,934 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 3 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 3 states have call predecessors, (82), 3 states have call successors, (82) Word has length 423 [2023-12-20 19:29:38,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:29:38,936 INFO L225 Difference]: With dead ends: 369 [2023-12-20 19:29:38,937 INFO L226 Difference]: Without dead ends: 188 [2023-12-20 19:29:38,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 838 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-20 19:29:38,939 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 293 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 19:29:38,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 531 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 19:29:38,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-12-20 19:29:38,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2023-12-20 19:29:38,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 116 states have (on average 1.456896551724138) internal successors, (169), 116 states have internal predecessors, (169), 67 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-20 19:29:38,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 303 transitions. [2023-12-20 19:29:38,975 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 303 transitions. Word has length 423 [2023-12-20 19:29:38,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:29:38,976 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 303 transitions. [2023-12-20 19:29:38,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 3 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 3 states have call predecessors, (82), 3 states have call successors, (82) [2023-12-20 19:29:38,977 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 303 transitions. [2023-12-20 19:29:38,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-20 19:29:38,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:29:38,979 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:29:38,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 19:29:39,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-20 19:29:39,190 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:29:39,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:29:39,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1654829634, now seen corresponding path program 1 times [2023-12-20 19:29:39,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:29:39,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462687817] [2023-12-20 19:29:39,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:29:39,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:29:39,258 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:29:39,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2113616046] [2023-12-20 19:29:39,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:29:39,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:29:39,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:29:39,261 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 19:29:39,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 19:29:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:29:39,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-20 19:29:39,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:29:40,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 3366 proven. 48 refuted. 0 times theorem prover too weak. 5430 trivial. 0 not checked. [2023-12-20 19:29:40,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 19:29:40,416 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 150 proven. 48 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2023-12-20 19:29:40,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:29:40,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462687817] [2023-12-20 19:29:40,416 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:29:40,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113616046] [2023-12-20 19:29:40,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113616046] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 19:29:40,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 19:29:40,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-12-20 19:29:40,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956828907] [2023-12-20 19:29:40,417 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 19:29:40,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-20 19:29:40,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:29:40,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-20 19:29:40,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-12-20 19:29:40,419 INFO L87 Difference]: Start difference. First operand 186 states and 303 transitions. Second operand has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 4 states have call successors, (134), 3 states have call predecessors, (134), 5 states have return successors, (134), 4 states have call predecessors, (134), 4 states have call successors, (134) [2023-12-20 19:29:43,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:29:43,684 INFO L93 Difference]: Finished difference Result 2007 states and 3211 transitions. [2023-12-20 19:29:43,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-20 19:29:43,684 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 4 states have call successors, (134), 3 states have call predecessors, (134), 5 states have return successors, (134), 4 states have call predecessors, (134), 4 states have call successors, (134) Word has length 423 [2023-12-20 19:29:43,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:29:43,693 INFO L225 Difference]: With dead ends: 2007 [2023-12-20 19:29:43,693 INFO L226 Difference]: Without dead ends: 1822 [2023-12-20 19:29:43,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 838 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=568, Invalid=1502, Unknown=0, NotChecked=0, Total=2070 [2023-12-20 19:29:43,695 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 2610 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 2492 mSolverCounterSat, 1661 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2760 SdHoareTripleChecker+Valid, 3015 SdHoareTripleChecker+Invalid, 4153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1661 IncrementalHoareTripleChecker+Valid, 2492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 19:29:43,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2760 Valid, 3015 Invalid, 4153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1661 Valid, 2492 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 19:29:43,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2023-12-20 19:29:43,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1037. [2023-12-20 19:29:43,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 608 states have (on average 1.3700657894736843) internal successors, (833), 612 states have internal predecessors, (833), 414 states have call successors, (414), 14 states have call predecessors, (414), 14 states have return successors, (414), 410 states have call predecessors, (414), 414 states have call successors, (414) [2023-12-20 19:29:43,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1661 transitions. [2023-12-20 19:29:43,841 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1661 transitions. Word has length 423 [2023-12-20 19:29:43,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:29:43,842 INFO L495 AbstractCegarLoop]: Abstraction has 1037 states and 1661 transitions. [2023-12-20 19:29:43,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 4 states have call successors, (134), 3 states have call predecessors, (134), 5 states have return successors, (134), 4 states have call predecessors, (134), 4 states have call successors, (134) [2023-12-20 19:29:43,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1661 transitions. [2023-12-20 19:29:43,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-20 19:29:43,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:29:43,845 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:29:43,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 19:29:44,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:29:44,052 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:29:44,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:29:44,052 INFO L85 PathProgramCache]: Analyzing trace with hash -951193920, now seen corresponding path program 1 times [2023-12-20 19:29:44,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:29:44,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347051224] [2023-12-20 19:29:44,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:29:44,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:29:44,083 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:29:44,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [146024277] [2023-12-20 19:29:44,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:29:44,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:29:44,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:29:44,084 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 19:29:44,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 19:29:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:29:44,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 19:29:44,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:29:45,366 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4113 proven. 252 refuted. 0 times theorem prover too weak. 4479 trivial. 0 not checked. [2023-12-20 19:29:45,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 19:29:56,150 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 138 proven. 255 refuted. 0 times theorem prover too weak. 8451 trivial. 0 not checked. [2023-12-20 19:29:56,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:29:56,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347051224] [2023-12-20 19:29:56,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:29:56,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146024277] [2023-12-20 19:29:56,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146024277] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 19:29:56,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 19:29:56,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2023-12-20 19:29:56,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307222863] [2023-12-20 19:29:56,151 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 19:29:56,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-20 19:29:56,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:29:56,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-20 19:29:56,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2023-12-20 19:29:56,154 INFO L87 Difference]: Start difference. First operand 1037 states and 1661 transitions. Second operand has 21 states, 20 states have (on average 8.5) internal successors, (170), 19 states have internal predecessors, (170), 6 states have call successors, (134), 4 states have call predecessors, (134), 7 states have return successors, (134), 6 states have call predecessors, (134), 6 states have call successors, (134) [2023-12-20 19:30:06,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:30:06,903 INFO L93 Difference]: Finished difference Result 11264 states and 17700 transitions. [2023-12-20 19:30:06,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-20 19:30:06,904 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 8.5) internal successors, (170), 19 states have internal predecessors, (170), 6 states have call successors, (134), 4 states have call predecessors, (134), 7 states have return successors, (134), 6 states have call predecessors, (134), 6 states have call successors, (134) Word has length 423 [2023-12-20 19:30:06,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:30:06,948 INFO L225 Difference]: With dead ends: 11264 [2023-12-20 19:30:06,948 INFO L226 Difference]: Without dead ends: 10228 [2023-12-20 19:30:06,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 835 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1265, Invalid=2517, Unknown=0, NotChecked=0, Total=3782 [2023-12-20 19:30:06,956 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 3015 mSDsluCounter, 3715 mSDsCounter, 0 mSdLazyCounter, 4075 mSolverCounterSat, 1232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3155 SdHoareTripleChecker+Valid, 4068 SdHoareTripleChecker+Invalid, 5307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1232 IncrementalHoareTripleChecker+Valid, 4075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-12-20 19:30:06,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3155 Valid, 4068 Invalid, 5307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1232 Valid, 4075 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2023-12-20 19:30:06,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10228 states. [2023-12-20 19:30:07,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10228 to 4924. [2023-12-20 19:30:07,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4924 states, 3107 states have (on average 1.3897650466688123) internal successors, (4318), 3140 states have internal predecessors, (4318), 1725 states have call successors, (1725), 91 states have call predecessors, (1725), 91 states have return successors, (1725), 1692 states have call predecessors, (1725), 1725 states have call successors, (1725) [2023-12-20 19:30:07,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4924 states to 4924 states and 7768 transitions. [2023-12-20 19:30:07,644 INFO L78 Accepts]: Start accepts. Automaton has 4924 states and 7768 transitions. Word has length 423 [2023-12-20 19:30:07,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:30:07,645 INFO L495 AbstractCegarLoop]: Abstraction has 4924 states and 7768 transitions. [2023-12-20 19:30:07,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 8.5) internal successors, (170), 19 states have internal predecessors, (170), 6 states have call successors, (134), 4 states have call predecessors, (134), 7 states have return successors, (134), 6 states have call predecessors, (134), 6 states have call successors, (134) [2023-12-20 19:30:07,645 INFO L276 IsEmpty]: Start isEmpty. Operand 4924 states and 7768 transitions. [2023-12-20 19:30:07,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-20 19:30:07,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:30:07,650 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:30:07,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-20 19:30:07,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:30:07,858 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:30:07,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:30:07,858 INFO L85 PathProgramCache]: Analyzing trace with hash -732339202, now seen corresponding path program 1 times [2023-12-20 19:30:07,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:30:07,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009810237] [2023-12-20 19:30:07,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:30:07,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:30:07,913 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:30:07,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [485297973] [2023-12-20 19:30:07,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:30:07,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:30:07,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:30:07,914 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 19:30:07,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 19:30:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:30:08,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 19:30:08,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:30:10,464 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 951 proven. 558 refuted. 0 times theorem prover too weak. 7335 trivial. 0 not checked. [2023-12-20 19:30:10,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 19:30:12,117 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 12 proven. 381 refuted. 0 times theorem prover too weak. 8451 trivial. 0 not checked. [2023-12-20 19:30:12,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:30:12,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009810237] [2023-12-20 19:30:12,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:30:12,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485297973] [2023-12-20 19:30:12,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485297973] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 19:30:12,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 19:30:12,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 23 [2023-12-20 19:30:12,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641927387] [2023-12-20 19:30:12,118 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 19:30:12,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-20 19:30:12,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:30:12,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-20 19:30:12,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2023-12-20 19:30:12,120 INFO L87 Difference]: Start difference. First operand 4924 states and 7768 transitions. Second operand has 23 states, 22 states have (on average 8.863636363636363) internal successors, (195), 21 states have internal predecessors, (195), 8 states have call successors, (134), 5 states have call predecessors, (134), 8 states have return successors, (134), 6 states have call predecessors, (134), 8 states have call successors, (134) [2023-12-20 19:30:14,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:30:14,941 INFO L93 Difference]: Finished difference Result 16627 states and 25242 transitions. [2023-12-20 19:30:14,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-20 19:30:14,942 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 8.863636363636363) internal successors, (195), 21 states have internal predecessors, (195), 8 states have call successors, (134), 5 states have call predecessors, (134), 8 states have return successors, (134), 6 states have call predecessors, (134), 8 states have call successors, (134) Word has length 423 [2023-12-20 19:30:14,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:30:14,984 INFO L225 Difference]: With dead ends: 16627 [2023-12-20 19:30:14,985 INFO L226 Difference]: Without dead ends: 11704 [2023-12-20 19:30:15,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 865 GetRequests, 825 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=479, Invalid=1243, Unknown=0, NotChecked=0, Total=1722 [2023-12-20 19:30:15,001 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 709 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 1795 SdHoareTripleChecker+Invalid, 1741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 19:30:15,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 1795 Invalid, 1741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 19:30:15,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11704 states. [2023-12-20 19:30:16,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11704 to 10979. [2023-12-20 19:30:16,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10979 states, 7136 states have (on average 1.351177130044843) internal successors, (9642), 7202 states have internal predecessors, (9642), 3450 states have call successors, (3450), 392 states have call predecessors, (3450), 392 states have return successors, (3450), 3384 states have call predecessors, (3450), 3450 states have call successors, (3450) [2023-12-20 19:30:16,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10979 states to 10979 states and 16542 transitions. [2023-12-20 19:30:16,430 INFO L78 Accepts]: Start accepts. Automaton has 10979 states and 16542 transitions. Word has length 423 [2023-12-20 19:30:16,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:30:16,432 INFO L495 AbstractCegarLoop]: Abstraction has 10979 states and 16542 transitions. [2023-12-20 19:30:16,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 8.863636363636363) internal successors, (195), 21 states have internal predecessors, (195), 8 states have call successors, (134), 5 states have call predecessors, (134), 8 states have return successors, (134), 6 states have call predecessors, (134), 8 states have call successors, (134) [2023-12-20 19:30:16,433 INFO L276 IsEmpty]: Start isEmpty. Operand 10979 states and 16542 transitions. [2023-12-20 19:30:16,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-20 19:30:16,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:30:16,438 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:30:16,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 19:30:16,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:30:16,645 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:30:16,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:30:16,645 INFO L85 PathProgramCache]: Analyzing trace with hash -789597504, now seen corresponding path program 1 times [2023-12-20 19:30:16,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:30:16,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387712748] [2023-12-20 19:30:16,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:30:16,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:30:16,672 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:30:16,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [464906202] [2023-12-20 19:30:16,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:30:16,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:30:16,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:30:16,674 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 19:30:16,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 19:30:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:30:16,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 19:30:16,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:30:17,426 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-20 19:30:17,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:30:17,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:30:17,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387712748] [2023-12-20 19:30:17,426 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:30:17,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464906202] [2023-12-20 19:30:17,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464906202] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:30:17,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:30:17,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 19:30:17,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263034460] [2023-12-20 19:30:17,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:30:17,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 19:30:17,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:30:17,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 19:30:17,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 19:30:17,428 INFO L87 Difference]: Start difference. First operand 10979 states and 16542 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-20 19:30:22,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:30:22,579 INFO L93 Difference]: Finished difference Result 46739 states and 70150 transitions. [2023-12-20 19:30:22,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 19:30:22,584 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 423 [2023-12-20 19:30:22,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:30:22,685 INFO L225 Difference]: With dead ends: 46739 [2023-12-20 19:30:22,685 INFO L226 Difference]: Without dead ends: 35761 [2023-12-20 19:30:22,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-20 19:30:22,716 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 1899 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 680 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1899 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 680 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 19:30:22,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1899 Valid, 1893 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [680 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 19:30:22,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35761 states. [2023-12-20 19:30:27,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35761 to 33249. [2023-12-20 19:30:27,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33249 states, 21174 states have (on average 1.322848776801738) internal successors, (28010), 21366 states have internal predecessors, (28010), 10856 states have call successors, (10856), 1218 states have call predecessors, (10856), 1218 states have return successors, (10856), 10664 states have call predecessors, (10856), 10856 states have call successors, (10856) [2023-12-20 19:30:27,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33249 states to 33249 states and 49722 transitions. [2023-12-20 19:30:27,699 INFO L78 Accepts]: Start accepts. Automaton has 33249 states and 49722 transitions. Word has length 423 [2023-12-20 19:30:27,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:30:27,700 INFO L495 AbstractCegarLoop]: Abstraction has 33249 states and 49722 transitions. [2023-12-20 19:30:27,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-20 19:30:27,700 INFO L276 IsEmpty]: Start isEmpty. Operand 33249 states and 49722 transitions. [2023-12-20 19:30:27,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-20 19:30:27,707 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:30:27,707 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:30:27,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 19:30:27,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:30:27,914 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:30:27,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:30:27,914 INFO L85 PathProgramCache]: Analyzing trace with hash 596605890, now seen corresponding path program 1 times [2023-12-20 19:30:27,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:30:27,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786443493] [2023-12-20 19:30:27,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:30:27,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:30:27,946 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:30:27,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [654571792] [2023-12-20 19:30:27,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:30:27,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:30:27,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:30:27,948 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 19:30:27,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 19:30:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-20 19:30:28,230 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. Received shutdown request... [2023-12-20 19:44:04,791 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 19:44:04,792 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 19:44:05,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-20 19:44:05,993 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forcibly destroying the process [2023-12-20 19:44:06,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 137 [2023-12-20 19:44:06,008 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-20 19:44:06,010 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 19:44:06,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 19:44:06,010 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 424 with TraceHistMax 67,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-20 19:44:06,013 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:44:06,015 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 19:44:06,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 07:44:06 BoogieIcfgContainer [2023-12-20 19:44:06,016 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 19:44:06,016 INFO L158 Benchmark]: Toolchain (without parser) took 870585.42ms. Allocated memory was 210.8MB in the beginning and 2.9GB in the end (delta: 2.7GB). Free memory was 175.3MB in the beginning and 2.6GB in the end (delta: -2.4GB). Peak memory consumption was 354.8MB. Max. memory is 8.0GB. [2023-12-20 19:44:06,017 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 210.8MB. Free memory is still 167.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 19:44:06,017 INFO L158 Benchmark]: CACSL2BoogieTranslator took 362.53ms. Allocated memory is still 210.8MB. Free memory was 175.3MB in the beginning and 151.8MB in the end (delta: 23.5MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-20 19:44:06,017 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.00ms. Allocated memory is still 210.8MB. Free memory was 151.8MB in the beginning and 143.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-20 19:44:06,017 INFO L158 Benchmark]: Boogie Preprocessor took 112.43ms. Allocated memory is still 210.8MB. Free memory was 143.4MB in the beginning and 131.8MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-20 19:44:06,017 INFO L158 Benchmark]: RCFGBuilder took 711.96ms. Allocated memory is still 210.8MB. Free memory was 131.8MB in the beginning and 145.2MB in the end (delta: -13.4MB). Peak memory consumption was 25.9MB. Max. memory is 8.0GB. [2023-12-20 19:44:06,017 INFO L158 Benchmark]: TraceAbstraction took 869323.59ms. Allocated memory was 210.8MB in the beginning and 2.9GB in the end (delta: 2.7GB). Free memory was 144.6MB in the beginning and 2.6GB in the end (delta: -2.4GB). Peak memory consumption was 322.6MB. Max. memory is 8.0GB. [2023-12-20 19:44:06,018 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 210.8MB. Free memory is still 167.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 362.53ms. Allocated memory is still 210.8MB. Free memory was 175.3MB in the beginning and 151.8MB in the end (delta: 23.5MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 70.00ms. Allocated memory is still 210.8MB. Free memory was 151.8MB in the beginning and 143.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 112.43ms. Allocated memory is still 210.8MB. Free memory was 143.4MB in the beginning and 131.8MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * RCFGBuilder took 711.96ms. Allocated memory is still 210.8MB. Free memory was 131.8MB in the beginning and 145.2MB in the end (delta: -13.4MB). Peak memory consumption was 25.9MB. Max. memory is 8.0GB. * TraceAbstraction took 869323.59ms. Allocated memory was 210.8MB in the beginning and 2.9GB in the end (delta: 2.7GB). Free memory was 144.6MB in the beginning and 2.6GB in the end (delta: -2.4GB). Peak memory consumption was 322.6MB. 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 424 with TraceHistMax 67,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 184 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 869.3s, OverallIterations: 7, TraceHistogramMax: 67, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 22.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8870 SdHoareTripleChecker+Valid, 13.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8526 mSDsluCounter, 11600 SdHoareTripleChecker+Invalid, 12.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9204 mSDsCounter, 4032 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8850 IncrementalHoareTripleChecker+Invalid, 12882 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4032 mSolverCounterUnsat, 2396 mSDtfsCounter, 8850 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4339 GetRequests, 4176 SyntacticMatches, 1 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2226 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33249occurred in iteration=6, InterpolantAutomatonStates: 145, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.3s AutomataMinimizationTime, 6 MinimizatonAttempts, 9328 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 17.8s InterpolantComputationTime, 2961 NumberOfCodeBlocks, 2961 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 4220 ConstructedInterpolants, 0 QuantifiedInterpolants, 29793 SizeOfPredicates, 29 NumberOfNonLiveVariables, 5787 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 86814/88440 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