/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-61.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 20:09:31,776 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 20:09:31,860 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 20:09:31,863 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 20:09:31,863 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 20:09:31,888 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 20:09:31,889 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 20:09:31,889 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 20:09:31,890 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 20:09:31,893 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 20:09:31,893 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 20:09:31,893 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 20:09:31,894 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 20:09:31,895 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 20:09:31,895 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 20:09:31,895 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 20:09:31,895 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 20:09:31,895 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 20:09:31,895 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 20:09:31,896 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 20:09:31,896 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 20:09:31,896 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 20:09:31,896 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 20:09:31,896 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 20:09:31,896 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 20:09:31,897 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 20:09:31,897 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 20:09:31,897 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 20:09:31,897 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 20:09:31,897 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 20:09:31,898 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 20:09:31,898 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 20:09:31,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 20:09:31,899 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 20:09:31,899 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 20:09:31,899 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 20:09:31,899 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 20:09:31,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 20:09:31,899 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 20:09:31,899 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 20:09:31,899 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 20:09:31,899 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 20:09:31,900 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 20:09:31,900 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 20:09:32,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 20:09:32,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 20:09:32,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 20:09:32,107 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 20:09:32,107 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 20:09:32,108 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-61.i [2023-12-20 20:09:33,221 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 20:09:33,432 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 20:09:33,433 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-61.i [2023-12-20 20:09:33,442 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcb489e55/6621d52d20bd43a5a2eeeb264d0417a2/FLAG2214c3574 [2023-12-20 20:09:33,452 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcb489e55/6621d52d20bd43a5a2eeeb264d0417a2 [2023-12-20 20:09:33,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 20:09:33,454 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 20:09:33,455 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 20:09:33,456 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 20:09:33,459 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 20:09:33,459 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 08:09:33" (1/1) ... [2023-12-20 20:09:33,460 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42978881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:09:33, skipping insertion in model container [2023-12-20 20:09:33,460 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 08:09:33" (1/1) ... [2023-12-20 20:09:33,488 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 20:09:33,584 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-61.i[916,929] [2023-12-20 20:09:33,723 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 20:09:33,734 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 20:09:33,742 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-61.i[916,929] [2023-12-20 20:09:33,792 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 20:09:33,809 INFO L206 MainTranslator]: Completed translation [2023-12-20 20:09:33,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:09:33 WrapperNode [2023-12-20 20:09:33,809 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 20:09:33,810 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 20:09:33,810 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 20:09:33,810 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 20:09:33,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:09:33" (1/1) ... [2023-12-20 20:09:33,853 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:09:33" (1/1) ... [2023-12-20 20:09:33,899 INFO L138 Inliner]: procedures = 26, calls = 122, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 741 [2023-12-20 20:09:33,900 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 20:09:33,900 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 20:09:33,900 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 20:09:33,900 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 20:09:33,909 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:09:33" (1/1) ... [2023-12-20 20:09:33,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:09:33" (1/1) ... [2023-12-20 20:09:33,915 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:09:33" (1/1) ... [2023-12-20 20:09:33,934 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 20:09:33,934 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:09:33" (1/1) ... [2023-12-20 20:09:33,934 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:09:33" (1/1) ... [2023-12-20 20:09:33,950 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:09:33" (1/1) ... [2023-12-20 20:09:33,954 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:09:33" (1/1) ... [2023-12-20 20:09:33,959 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:09:33" (1/1) ... [2023-12-20 20:09:33,963 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:09:33" (1/1) ... [2023-12-20 20:09:33,985 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 20:09:33,986 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 20:09:33,986 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 20:09:33,986 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 20:09:33,987 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:09:33" (1/1) ... [2023-12-20 20:09:33,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 20:09:33,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:09:34,058 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 20:09:34,094 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 20:09:34,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 20:09:34,103 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 20:09:34,104 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 20:09:34,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 20:09:34,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 20:09:34,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 20:09:34,272 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 20:09:34,274 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 20:09:34,919 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 20:09:34,945 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 20:09:34,946 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 20:09:34,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 08:09:34 BoogieIcfgContainer [2023-12-20 20:09:34,946 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 20:09:34,947 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 20:09:34,947 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 20:09:34,949 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 20:09:34,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 08:09:33" (1/3) ... [2023-12-20 20:09:34,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3424efca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 08:09:34, skipping insertion in model container [2023-12-20 20:09:34,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:09:33" (2/3) ... [2023-12-20 20:09:34,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3424efca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 08:09:34, skipping insertion in model container [2023-12-20 20:09:34,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 08:09:34" (3/3) ... [2023-12-20 20:09:34,951 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-61.i [2023-12-20 20:09:34,962 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 20:09:34,963 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 20:09:34,996 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 20:09:35,000 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;@6082795b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 20:09:35,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 20:09:35,005 INFO L276 IsEmpty]: Start isEmpty. Operand has 300 states, 188 states have (on average 1.5904255319148937) internal successors, (299), 189 states have internal predecessors, (299), 109 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2023-12-20 20:09:35,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2023-12-20 20:09:35,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:09:35,033 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:09:35,033 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:09:35,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:09:35,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1754566707, now seen corresponding path program 1 times [2023-12-20 20:09:35,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:09:35,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140156109] [2023-12-20 20:09:35,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:35,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:09:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:09:35,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:09:35,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140156109] [2023-12-20 20:09:35,279 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 20:09:35,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608728789] [2023-12-20 20:09:35,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:35,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:09:35,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:09:35,282 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 20:09:35,316 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 20:09:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:09:35,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 1540 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-20 20:09:35,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:09:35,779 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 23328 trivial. 0 not checked. [2023-12-20 20:09:35,780 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:09:35,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608728789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:09:35,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:09:35,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 20:09:35,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340759813] [2023-12-20 20:09:35,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:09:35,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 20:09:35,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:09:35,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 20:09:35,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 20:09:35,817 INFO L87 Difference]: Start difference. First operand has 300 states, 188 states have (on average 1.5904255319148937) internal successors, (299), 189 states have internal predecessors, (299), 109 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) Second operand has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 2 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 2 states have call successors, (109) [2023-12-20 20:09:35,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:09:35,884 INFO L93 Difference]: Finished difference Result 597 states and 1141 transitions. [2023-12-20 20:09:35,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 20:09:35,886 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 2 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 2 states have call successors, (109) Word has length 687 [2023-12-20 20:09:35,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:09:35,893 INFO L225 Difference]: With dead ends: 597 [2023-12-20 20:09:35,893 INFO L226 Difference]: Without dead ends: 298 [2023-12-20 20:09:35,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 686 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 20:09:35,899 INFO L413 NwaCegarLoop]: 508 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, 508 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 20:09:35,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 508 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:09:35,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-12-20 20:09:35,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2023-12-20 20:09:35,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 187 states have (on average 1.5668449197860963) internal successors, (293), 187 states have internal predecessors, (293), 109 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2023-12-20 20:09:35,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 511 transitions. [2023-12-20 20:09:35,955 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 511 transitions. Word has length 687 [2023-12-20 20:09:35,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:09:35,955 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 511 transitions. [2023-12-20 20:09:35,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 2 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 2 states have call successors, (109) [2023-12-20 20:09:35,956 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 511 transitions. [2023-12-20 20:09:35,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2023-12-20 20:09:35,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:09:35,971 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:09:35,995 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 20:09:36,179 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 20:09:36,180 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:09:36,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:09:36,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1103860833, now seen corresponding path program 1 times [2023-12-20 20:09:36,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:09:36,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885752689] [2023-12-20 20:09:36,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:36,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:09:36,345 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:09:36,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [886780293] [2023-12-20 20:09:36,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:36,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:09:36,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:09:36,358 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 20:09:36,370 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 20:09:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:09:36,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 1540 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:09:36,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:09:36,780 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-12-20 20:09:36,780 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:09:36,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:09:36,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885752689] [2023-12-20 20:09:36,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:09:36,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886780293] [2023-12-20 20:09:36,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886780293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:09:36,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:09:36,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:09:36,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654077617] [2023-12-20 20:09:36,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:09:36,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:09:36,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:09:36,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:09:36,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:09:36,788 INFO L87 Difference]: Start difference. First operand 298 states and 511 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-12-20 20:09:36,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:09:36,831 INFO L93 Difference]: Finished difference Result 595 states and 1021 transitions. [2023-12-20 20:09:36,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:09:36,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 687 [2023-12-20 20:09:36,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:09:36,839 INFO L225 Difference]: With dead ends: 595 [2023-12-20 20:09:36,839 INFO L226 Difference]: Without dead ends: 298 [2023-12-20 20:09:36,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 685 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:09:36,841 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 25 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:09:36,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 986 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:09:36,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-12-20 20:09:36,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2023-12-20 20:09:36,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 187 states have (on average 1.5614973262032086) internal successors, (292), 187 states have internal predecessors, (292), 109 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2023-12-20 20:09:36,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 510 transitions. [2023-12-20 20:09:36,867 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 510 transitions. Word has length 687 [2023-12-20 20:09:36,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:09:36,869 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 510 transitions. [2023-12-20 20:09:36,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-12-20 20:09:36,869 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 510 transitions. [2023-12-20 20:09:36,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2023-12-20 20:09:36,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:09:36,876 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:09:36,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 20:09:37,084 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 20:09:37,084 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:09:37,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:09:37,085 INFO L85 PathProgramCache]: Analyzing trace with hash 92743583, now seen corresponding path program 1 times [2023-12-20 20:09:37,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:09:37,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609458949] [2023-12-20 20:09:37,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:37,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:09:37,149 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:09:37,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1420005622] [2023-12-20 20:09:37,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:37,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:09:37,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:09:37,150 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 20:09:37,158 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 20:09:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:09:37,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:09:37,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:09:38,097 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-12-20 20:09:38,097 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:09:38,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:09:38,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609458949] [2023-12-20 20:09:38,098 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:09:38,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420005622] [2023-12-20 20:09:38,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420005622] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:09:38,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:09:38,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 20:09:38,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421586640] [2023-12-20 20:09:38,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:09:38,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:09:38,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:09:38,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:09:38,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:09:38,101 INFO L87 Difference]: Start difference. First operand 298 states and 510 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-12-20 20:09:38,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:09:38,164 INFO L93 Difference]: Finished difference Result 892 states and 1528 transitions. [2023-12-20 20:09:38,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:09:38,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 687 [2023-12-20 20:09:38,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:09:38,172 INFO L225 Difference]: With dead ends: 892 [2023-12-20 20:09:38,172 INFO L226 Difference]: Without dead ends: 595 [2023-12-20 20:09:38,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 685 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:09:38,175 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 198 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:09:38,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1005 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:09:38,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2023-12-20 20:09:38,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 592. [2023-12-20 20:09:38,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 371 states have (on average 1.5606469002695418) internal successors, (579), 371 states have internal predecessors, (579), 218 states have call successors, (218), 2 states have call predecessors, (218), 2 states have return successors, (218), 218 states have call predecessors, (218), 218 states have call successors, (218) [2023-12-20 20:09:38,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 1015 transitions. [2023-12-20 20:09:38,244 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 1015 transitions. Word has length 687 [2023-12-20 20:09:38,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:09:38,245 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 1015 transitions. [2023-12-20 20:09:38,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-12-20 20:09:38,245 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 1015 transitions. [2023-12-20 20:09:38,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2023-12-20 20:09:38,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:09:38,250 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:09:38,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 20:09:38,457 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 20:09:38,458 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:09:38,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:09:38,458 INFO L85 PathProgramCache]: Analyzing trace with hash 968762589, now seen corresponding path program 1 times [2023-12-20 20:09:38,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:09:38,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330531687] [2023-12-20 20:09:38,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:38,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:09:38,501 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:09:38,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [580571087] [2023-12-20 20:09:38,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:38,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:09:38,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:09:38,503 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 20:09:38,528 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 20:09:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:09:38,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 1537 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:09:38,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:09:38,846 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-12-20 20:09:38,847 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:09:38,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:09:38,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330531687] [2023-12-20 20:09:38,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:09:38,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580571087] [2023-12-20 20:09:38,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580571087] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:09:38,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:09:38,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:09:38,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125257249] [2023-12-20 20:09:38,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:09:38,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:09:38,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:09:38,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:09:38,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:09:38,849 INFO L87 Difference]: Start difference. First operand 592 states and 1015 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-12-20 20:09:38,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:09:38,907 INFO L93 Difference]: Finished difference Result 1527 states and 2629 transitions. [2023-12-20 20:09:38,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:09:38,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 687 [2023-12-20 20:09:38,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:09:38,912 INFO L225 Difference]: With dead ends: 1527 [2023-12-20 20:09:38,912 INFO L226 Difference]: Without dead ends: 936 [2023-12-20 20:09:38,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 685 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:09:38,914 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 278 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:09:38,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 978 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:09:38,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2023-12-20 20:09:38,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 932. [2023-12-20 20:09:38,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 637 states have (on average 1.6012558869701727) internal successors, (1020), 639 states have internal predecessors, (1020), 290 states have call successors, (290), 4 states have call predecessors, (290), 4 states have return successors, (290), 288 states have call predecessors, (290), 290 states have call successors, (290) [2023-12-20 20:09:38,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1600 transitions. [2023-12-20 20:09:38,977 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1600 transitions. Word has length 687 [2023-12-20 20:09:38,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:09:38,977 INFO L495 AbstractCegarLoop]: Abstraction has 932 states and 1600 transitions. [2023-12-20 20:09:38,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-12-20 20:09:38,978 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1600 transitions. [2023-12-20 20:09:38,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2023-12-20 20:09:38,982 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:09:38,982 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:09:39,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 20:09:39,190 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 20:09:39,190 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:09:39,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:09:39,191 INFO L85 PathProgramCache]: Analyzing trace with hash 128931721, now seen corresponding path program 1 times [2023-12-20 20:09:39,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:09:39,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318989942] [2023-12-20 20:09:39,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:39,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:09:39,232 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:09:39,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1593086893] [2023-12-20 20:09:39,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:39,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:09:39,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:09:39,234 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 20:09:39,259 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 20:09:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:09:39,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:09:39,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:09:39,578 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-12-20 20:09:39,578 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:09:39,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:09:39,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318989942] [2023-12-20 20:09:39,578 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:09:39,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593086893] [2023-12-20 20:09:39,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593086893] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:09:39,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:09:39,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:09:39,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262578820] [2023-12-20 20:09:39,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:09:39,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:09:39,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:09:39,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:09:39,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:09:39,587 INFO L87 Difference]: Start difference. First operand 932 states and 1600 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-12-20 20:09:39,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:09:39,680 INFO L93 Difference]: Finished difference Result 2790 states and 4790 transitions. [2023-12-20 20:09:39,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:09:39,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 688 [2023-12-20 20:09:39,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:09:39,690 INFO L225 Difference]: With dead ends: 2790 [2023-12-20 20:09:39,690 INFO L226 Difference]: Without dead ends: 1859 [2023-12-20 20:09:39,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 686 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:09:39,694 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 478 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:09:39,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 1403 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:09:39,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1859 states. [2023-12-20 20:09:39,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1859 to 1857. [2023-12-20 20:09:39,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1268 states have (on average 1.5946372239747635) internal successors, (2022), 1272 states have internal predecessors, (2022), 580 states have call successors, (580), 8 states have call predecessors, (580), 8 states have return successors, (580), 576 states have call predecessors, (580), 580 states have call successors, (580) [2023-12-20 20:09:39,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 3182 transitions. [2023-12-20 20:09:39,826 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 3182 transitions. Word has length 688 [2023-12-20 20:09:39,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:09:39,826 INFO L495 AbstractCegarLoop]: Abstraction has 1857 states and 3182 transitions. [2023-12-20 20:09:39,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-12-20 20:09:39,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 3182 transitions. [2023-12-20 20:09:39,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2023-12-20 20:09:39,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:09:39,831 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:09:39,846 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 20:09:40,039 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 20:09:40,039 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:09:40,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:09:40,040 INFO L85 PathProgramCache]: Analyzing trace with hash -688716729, now seen corresponding path program 1 times [2023-12-20 20:09:40,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:09:40,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887644945] [2023-12-20 20:09:40,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:40,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:09:40,086 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:09:40,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307794370] [2023-12-20 20:09:40,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:40,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:09:40,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:09:40,088 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 20:09:40,108 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 20:09:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:09:40,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 1539 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 20:09:40,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:09:40,638 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 8340 proven. 72 refuted. 0 times theorem prover too weak. 15132 trivial. 0 not checked. [2023-12-20 20:09:40,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:09:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 252 proven. 72 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2023-12-20 20:09:40,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:09:40,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887644945] [2023-12-20 20:09:40,954 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:09:40,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307794370] [2023-12-20 20:09:40,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307794370] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:09:40,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:09:40,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-20 20:09:40,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187740777] [2023-12-20 20:09:40,955 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:09:40,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 20:09:40,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:09:40,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 20:09:40,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 20:09:40,957 INFO L87 Difference]: Start difference. First operand 1857 states and 3182 transitions. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (133), 2 states have call predecessors, (133), 4 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) [2023-12-20 20:09:41,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:09:41,502 INFO L93 Difference]: Finished difference Result 3753 states and 6399 transitions. [2023-12-20 20:09:41,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 20:09:41,503 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (133), 2 states have call predecessors, (133), 4 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) Word has length 688 [2023-12-20 20:09:41,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:09:41,511 INFO L225 Difference]: With dead ends: 3753 [2023-12-20 20:09:41,511 INFO L226 Difference]: Without dead ends: 1897 [2023-12-20 20:09:41,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1378 GetRequests, 1368 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-20 20:09:41,517 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 511 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 20:09:41,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 960 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 20:09:41,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1897 states. [2023-12-20 20:09:41,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1873. [2023-12-20 20:09:41,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1280 states have (on average 1.5828125) internal successors, (2026), 1284 states have internal predecessors, (2026), 580 states have call successors, (580), 12 states have call predecessors, (580), 12 states have return successors, (580), 576 states have call predecessors, (580), 580 states have call successors, (580) [2023-12-20 20:09:41,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 3186 transitions. [2023-12-20 20:09:41,701 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 3186 transitions. Word has length 688 [2023-12-20 20:09:41,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:09:41,701 INFO L495 AbstractCegarLoop]: Abstraction has 1873 states and 3186 transitions. [2023-12-20 20:09:41,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (133), 2 states have call predecessors, (133), 4 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) [2023-12-20 20:09:41,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 3186 transitions. [2023-12-20 20:09:41,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2023-12-20 20:09:41,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:09:41,707 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:09:41,716 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 20:09:41,914 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 20:09:41,915 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:09:41,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:09:41,916 INFO L85 PathProgramCache]: Analyzing trace with hash -266014903, now seen corresponding path program 1 times [2023-12-20 20:09:41,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:09:41,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915837099] [2023-12-20 20:09:41,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:41,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:09:41,957 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:09:41,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1296565075] [2023-12-20 20:09:41,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:41,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:09:41,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:09:41,958 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 20:09:41,985 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 20:09:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:09:42,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 1540 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-20 20:09:42,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:09:43,411 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-12-20 20:09:43,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:09:43,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:09:43,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915837099] [2023-12-20 20:09:43,412 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:09:43,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296565075] [2023-12-20 20:09:43,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296565075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:09:43,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:09:43,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 20:09:43,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138155095] [2023-12-20 20:09:43,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:09:43,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:09:43,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:09:43,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:09:43,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:09:43,414 INFO L87 Difference]: Start difference. First operand 1873 states and 3186 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-12-20 20:09:43,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:09:43,544 INFO L93 Difference]: Finished difference Result 5617 states and 9556 transitions. [2023-12-20 20:09:43,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:09:43,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 688 [2023-12-20 20:09:43,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:09:43,564 INFO L225 Difference]: With dead ends: 5617 [2023-12-20 20:09:43,564 INFO L226 Difference]: Without dead ends: 3745 [2023-12-20 20:09:43,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 686 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:09:43,571 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 205 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:09:43,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 991 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:09:43,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3745 states. [2023-12-20 20:09:43,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3745 to 3743. [2023-12-20 20:09:43,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3743 states, 2558 states have (on average 1.5676309616888193) internal successors, (4010), 2566 states have internal predecessors, (4010), 1160 states have call successors, (1160), 24 states have call predecessors, (1160), 24 states have return successors, (1160), 1152 states have call predecessors, (1160), 1160 states have call successors, (1160) [2023-12-20 20:09:43,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3743 states to 3743 states and 6330 transitions. [2023-12-20 20:09:43,905 INFO L78 Accepts]: Start accepts. Automaton has 3743 states and 6330 transitions. Word has length 688 [2023-12-20 20:09:43,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:09:43,905 INFO L495 AbstractCegarLoop]: Abstraction has 3743 states and 6330 transitions. [2023-12-20 20:09:43,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-12-20 20:09:43,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3743 states and 6330 transitions. [2023-12-20 20:09:43,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2023-12-20 20:09:43,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:09:43,911 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:09:43,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 20:09:44,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:09:44,119 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:09:44,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:09:44,120 INFO L85 PathProgramCache]: Analyzing trace with hash -95965235, now seen corresponding path program 1 times [2023-12-20 20:09:44,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:09:44,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422681445] [2023-12-20 20:09:44,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:44,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:09:44,172 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:09:44,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1481730417] [2023-12-20 20:09:44,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:44,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:09:44,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:09:44,190 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 20:09:44,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 20:09:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:09:44,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 1536 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 20:09:44,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:09:44,619 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-12-20 20:09:44,619 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:09:44,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:09:44,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422681445] [2023-12-20 20:09:44,620 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:09:44,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481730417] [2023-12-20 20:09:44,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481730417] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:09:44,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:09:44,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 20:09:44,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64447773] [2023-12-20 20:09:44,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:09:44,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 20:09:44,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:09:44,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 20:09:44,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 20:09:44,622 INFO L87 Difference]: Start difference. First operand 3743 states and 6330 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-12-20 20:09:45,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:09:45,277 INFO L93 Difference]: Finished difference Result 11397 states and 19307 transitions. [2023-12-20 20:09:45,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 20:09:45,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 688 [2023-12-20 20:09:45,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:09:45,310 INFO L225 Difference]: With dead ends: 11397 [2023-12-20 20:09:45,310 INFO L226 Difference]: Without dead ends: 7655 [2023-12-20 20:09:45,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 685 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-20 20:09:45,323 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 1602 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 1922 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 20:09:45,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1602 Valid, 1922 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 20:09:45,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7655 states. [2023-12-20 20:09:45,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7655 to 6875. [2023-12-20 20:09:45,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6875 states, 5082 states have (on average 1.613931523022432) internal successors, (8202), 5106 states have internal predecessors, (8202), 1752 states have call successors, (1752), 40 states have call predecessors, (1752), 40 states have return successors, (1752), 1728 states have call predecessors, (1752), 1752 states have call successors, (1752) [2023-12-20 20:09:45,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6875 states to 6875 states and 11706 transitions. [2023-12-20 20:09:45,754 INFO L78 Accepts]: Start accepts. Automaton has 6875 states and 11706 transitions. Word has length 688 [2023-12-20 20:09:45,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:09:45,755 INFO L495 AbstractCegarLoop]: Abstraction has 6875 states and 11706 transitions. [2023-12-20 20:09:45,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-12-20 20:09:45,761 INFO L276 IsEmpty]: Start isEmpty. Operand 6875 states and 11706 transitions. [2023-12-20 20:09:45,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2023-12-20 20:09:45,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:09:45,768 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:09:45,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 20:09:45,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-20 20:09:45,975 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:09:45,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:09:45,976 INFO L85 PathProgramCache]: Analyzing trace with hash -422652762, now seen corresponding path program 1 times [2023-12-20 20:09:45,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:09:45,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429274251] [2023-12-20 20:09:45,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:45,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:09:46,015 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:09:46,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1941550780] [2023-12-20 20:09:46,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:46,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:09:46,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:09:46,032 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 20:09:46,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 20:09:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:09:46,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 1540 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 20:09:46,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:09:46,479 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-12-20 20:09:46,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:09:46,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:09:46,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429274251] [2023-12-20 20:09:46,480 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:09:46,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941550780] [2023-12-20 20:09:46,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941550780] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:09:46,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:09:46,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 20:09:46,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302391091] [2023-12-20 20:09:46,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:09:46,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 20:09:46,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:09:46,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 20:09:46,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 20:09:46,485 INFO L87 Difference]: Start difference. First operand 6875 states and 11706 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-12-20 20:09:46,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:09:46,921 INFO L93 Difference]: Finished difference Result 17407 states and 29662 transitions. [2023-12-20 20:09:46,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 20:09:46,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 689 [2023-12-20 20:09:46,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:09:46,996 INFO L225 Difference]: With dead ends: 17407 [2023-12-20 20:09:46,996 INFO L226 Difference]: Without dead ends: 10461 [2023-12-20 20:09:47,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 687 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 20:09:47,014 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 996 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 2357 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 20:09:47,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 2357 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 20:09:47,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10461 states. [2023-12-20 20:09:47,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10461 to 10399. [2023-12-20 20:09:47,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10399 states, 7710 states have (on average 1.6127107652399482) internal successors, (12434), 7746 states have internal predecessors, (12434), 2628 states have call successors, (2628), 60 states have call predecessors, (2628), 60 states have return successors, (2628), 2592 states have call predecessors, (2628), 2628 states have call successors, (2628) [2023-12-20 20:09:47,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10399 states to 10399 states and 17690 transitions. [2023-12-20 20:09:47,630 INFO L78 Accepts]: Start accepts. Automaton has 10399 states and 17690 transitions. Word has length 689 [2023-12-20 20:09:47,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:09:47,631 INFO L495 AbstractCegarLoop]: Abstraction has 10399 states and 17690 transitions. [2023-12-20 20:09:47,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-12-20 20:09:47,632 INFO L276 IsEmpty]: Start isEmpty. Operand 10399 states and 17690 transitions. [2023-12-20 20:09:47,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2023-12-20 20:09:47,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:09:47,641 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:09:47,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 20:09:47,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:09:47,848 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:09:47,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:09:47,849 INFO L85 PathProgramCache]: Analyzing trace with hash 495695617, now seen corresponding path program 1 times [2023-12-20 20:09:47,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:09:47,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990250452] [2023-12-20 20:09:47,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:47,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:09:47,953 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:09:47,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252497006] [2023-12-20 20:09:47,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:47,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:09:47,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:09:47,966 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 20:09:47,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 20:09:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:09:48,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 1539 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-20 20:09:48,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:09:49,177 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 9228 proven. 84 refuted. 0 times theorem prover too weak. 14232 trivial. 0 not checked. [2023-12-20 20:09:49,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:09:49,643 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 240 proven. 84 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2023-12-20 20:09:49,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:09:49,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990250452] [2023-12-20 20:09:49,643 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:09:49,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252497006] [2023-12-20 20:09:49,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252497006] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:09:49,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:09:49,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2023-12-20 20:09:49,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63449899] [2023-12-20 20:09:49,645 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:09:49,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-20 20:09:49,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:09:49,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-20 20:09:49,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-12-20 20:09:49,647 INFO L87 Difference]: Start difference. First operand 10399 states and 17690 transitions. Second operand has 13 states, 13 states have (on average 20.692307692307693) internal successors, (269), 13 states have internal predecessors, (269), 4 states have call successors, (218), 3 states have call predecessors, (218), 5 states have return successors, (218), 4 states have call predecessors, (218), 4 states have call successors, (218) [2023-12-20 20:09:54,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:09:54,083 INFO L93 Difference]: Finished difference Result 46443 states and 78380 transitions. [2023-12-20 20:09:54,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-20 20:09:54,083 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 20.692307692307693) internal successors, (269), 13 states have internal predecessors, (269), 4 states have call successors, (218), 3 states have call predecessors, (218), 5 states have return successors, (218), 4 states have call predecessors, (218), 4 states have call successors, (218) Word has length 689 [2023-12-20 20:09:54,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:09:54,179 INFO L225 Difference]: With dead ends: 46443 [2023-12-20 20:09:54,179 INFO L226 Difference]: Without dead ends: 34205 [2023-12-20 20:09:54,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1415 GetRequests, 1372 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=506, Invalid=1386, Unknown=0, NotChecked=0, Total=1892 [2023-12-20 20:09:54,208 INFO L413 NwaCegarLoop]: 659 mSDtfsCounter, 4506 mSDsluCounter, 3332 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 2329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4589 SdHoareTripleChecker+Valid, 3991 SdHoareTripleChecker+Invalid, 4860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2329 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:09:54,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4589 Valid, 3991 Invalid, 4860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2329 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 20:09:54,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34205 states. [2023-12-20 20:09:56,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34205 to 16251. [2023-12-20 20:09:56,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16251 states, 11874 states have (on average 1.584133400707428) internal successors, (18810), 11942 states have internal predecessors, (18810), 4260 states have call successors, (4260), 116 states have call predecessors, (4260), 116 states have return successors, (4260), 4192 states have call predecessors, (4260), 4260 states have call successors, (4260) [2023-12-20 20:09:56,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16251 states to 16251 states and 27330 transitions. [2023-12-20 20:09:56,190 INFO L78 Accepts]: Start accepts. Automaton has 16251 states and 27330 transitions. Word has length 689 [2023-12-20 20:09:56,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:09:56,191 INFO L495 AbstractCegarLoop]: Abstraction has 16251 states and 27330 transitions. [2023-12-20 20:09:56,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 20.692307692307693) internal successors, (269), 13 states have internal predecessors, (269), 4 states have call successors, (218), 3 states have call predecessors, (218), 5 states have return successors, (218), 4 states have call predecessors, (218), 4 states have call successors, (218) [2023-12-20 20:09:56,191 INFO L276 IsEmpty]: Start isEmpty. Operand 16251 states and 27330 transitions. [2023-12-20 20:09:56,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2023-12-20 20:09:56,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:09:56,200 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:09:56,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 20:09:56,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-20 20:09:56,408 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:09:56,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:09:56,409 INFO L85 PathProgramCache]: Analyzing trace with hash 636244227, now seen corresponding path program 1 times [2023-12-20 20:09:56,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:09:56,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947038309] [2023-12-20 20:09:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:56,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:09:56,444 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:09:56,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1482410057] [2023-12-20 20:09:56,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:56,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:09:56,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:09:56,446 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 20:09:56,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 20:09:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:09:56,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-20 20:09:56,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:09:57,691 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 8098 proven. 69 refuted. 0 times theorem prover too weak. 15377 trivial. 0 not checked. [2023-12-20 20:09:57,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:09:58,153 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 255 proven. 69 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2023-12-20 20:09:58,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:09:58,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947038309] [2023-12-20 20:09:58,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:09:58,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482410057] [2023-12-20 20:09:58,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482410057] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:09:58,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:09:58,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-20 20:09:58,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844930546] [2023-12-20 20:09:58,154 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:09:58,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-20 20:09:58,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:09:58,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-20 20:09:58,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-12-20 20:09:58,156 INFO L87 Difference]: Start difference. First operand 16251 states and 27330 transitions. Second operand has 14 states, 14 states have (on average 20.0) internal successors, (280), 14 states have internal predecessors, (280), 4 states have call successors, (218), 3 states have call predecessors, (218), 5 states have return successors, (218), 4 states have call predecessors, (218), 4 states have call successors, (218) [2023-12-20 20:10:05,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:10:05,767 INFO L93 Difference]: Finished difference Result 78323 states and 128669 transitions. [2023-12-20 20:10:05,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-20 20:10:05,768 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.0) internal successors, (280), 14 states have internal predecessors, (280), 4 states have call successors, (218), 3 states have call predecessors, (218), 5 states have return successors, (218), 4 states have call predecessors, (218), 4 states have call successors, (218) Word has length 689 [2023-12-20 20:10:05,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:10:06,077 INFO L225 Difference]: With dead ends: 78323 [2023-12-20 20:10:06,078 INFO L226 Difference]: Without dead ends: 62073 [2023-12-20 20:10:06,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1422 GetRequests, 1371 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=714, Invalid=2042, Unknown=0, NotChecked=0, Total=2756 [2023-12-20 20:10:06,126 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 3213 mSDsluCounter, 2487 mSDsCounter, 0 mSdLazyCounter, 2820 mSolverCounterSat, 2892 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3303 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 5712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2892 IncrementalHoareTripleChecker+Valid, 2820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 20:10:06,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3303 Valid, 2997 Invalid, 5712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2892 Valid, 2820 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 20:10:06,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62073 states. [2023-12-20 20:10:09,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62073 to 36759. [2023-12-20 20:10:09,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36759 states, 26638 states have (on average 1.536977250544335) internal successors, (40942), 26814 states have internal predecessors, (40942), 9800 states have call successors, (9800), 320 states have call predecessors, (9800), 320 states have return successors, (9800), 9624 states have call predecessors, (9800), 9800 states have call successors, (9800) [2023-12-20 20:10:10,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36759 states to 36759 states and 60542 transitions. [2023-12-20 20:10:10,022 INFO L78 Accepts]: Start accepts. Automaton has 36759 states and 60542 transitions. Word has length 689 [2023-12-20 20:10:10,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:10:10,023 INFO L495 AbstractCegarLoop]: Abstraction has 36759 states and 60542 transitions. [2023-12-20 20:10:10,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.0) internal successors, (280), 14 states have internal predecessors, (280), 4 states have call successors, (218), 3 states have call predecessors, (218), 5 states have return successors, (218), 4 states have call predecessors, (218), 4 states have call successors, (218) [2023-12-20 20:10:10,024 INFO L276 IsEmpty]: Start isEmpty. Operand 36759 states and 60542 transitions. [2023-12-20 20:10:10,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2023-12-20 20:10:10,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:10:10,040 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:10:10,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 20:10:10,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-20 20:10:10,249 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:10:10,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:10:10,250 INFO L85 PathProgramCache]: Analyzing trace with hash -952103675, now seen corresponding path program 1 times [2023-12-20 20:10:10,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:10:10,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118549678] [2023-12-20 20:10:10,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:10,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:10:10,308 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:10:10,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [573983171] [2023-12-20 20:10:10,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:10,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:10:10,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:10:10,338 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 20:10:10,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 20:10:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:10:10,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 1537 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 20:10:10,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:10:10,834 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 7590 proven. 63 refuted. 0 times theorem prover too weak. 15891 trivial. 0 not checked. [2023-12-20 20:10:10,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:10:11,134 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 261 proven. 63 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2023-12-20 20:10:11,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:10:11,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118549678] [2023-12-20 20:10:11,135 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:10:11,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573983171] [2023-12-20 20:10:11,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573983171] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:10:11,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:10:11,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-20 20:10:11,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077797728] [2023-12-20 20:10:11,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:10:11,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 20:10:11,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:10:11,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 20:10:11,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 20:10:11,141 INFO L87 Difference]: Start difference. First operand 36759 states and 60542 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 2 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 2 states have call predecessors, (131), 2 states have call successors, (131) [2023-12-20 20:10:14,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:10:14,132 INFO L93 Difference]: Finished difference Result 70825 states and 116447 transitions. [2023-12-20 20:10:14,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 20:10:14,136 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 2 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 2 states have call predecessors, (131), 2 states have call successors, (131) Word has length 689 [2023-12-20 20:10:14,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:10:14,206 INFO L225 Difference]: With dead ends: 70825 [2023-12-20 20:10:14,206 INFO L226 Difference]: Without dead ends: 31571 [2023-12-20 20:10:14,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1380 GetRequests, 1370 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-20 20:10:14,248 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 708 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 20:10:14,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 937 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 20:10:14,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31571 states. [2023-12-20 20:10:16,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31571 to 31095. [2023-12-20 20:10:16,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31095 states, 22566 states have (on average 1.53549587875565) internal successors, (34650), 22710 states have internal predecessors, (34650), 8240 states have call successors, (8240), 288 states have call predecessors, (8240), 288 states have return successors, (8240), 8096 states have call predecessors, (8240), 8240 states have call successors, (8240) [2023-12-20 20:10:16,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31095 states to 31095 states and 51130 transitions. [2023-12-20 20:10:16,722 INFO L78 Accepts]: Start accepts. Automaton has 31095 states and 51130 transitions. Word has length 689 [2023-12-20 20:10:16,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:10:16,723 INFO L495 AbstractCegarLoop]: Abstraction has 31095 states and 51130 transitions. [2023-12-20 20:10:16,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 2 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 2 states have call predecessors, (131), 2 states have call successors, (131) [2023-12-20 20:10:16,724 INFO L276 IsEmpty]: Start isEmpty. Operand 31095 states and 51130 transitions. [2023-12-20 20:10:16,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2023-12-20 20:10:16,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:10:16,736 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:10:16,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 20:10:16,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-20 20:10:16,943 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:10:16,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:10:16,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1730450367, now seen corresponding path program 1 times [2023-12-20 20:10:16,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:10:16,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145782141] [2023-12-20 20:10:16,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:16,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:10:16,987 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:10:16,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903523901] [2023-12-20 20:10:16,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:16,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:10:16,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:10:17,005 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 20:10:17,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 20:10:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:10:17,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 1536 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 20:10:17,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:10:18,634 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-12-20 20:10:18,634 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:10:18,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:10:18,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145782141] [2023-12-20 20:10:18,635 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:10:18,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903523901] [2023-12-20 20:10:18,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903523901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:10:18,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:10:18,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 20:10:18,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407081879] [2023-12-20 20:10:18,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:10:18,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:10:18,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:10:18,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:10:18,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:10:18,643 INFO L87 Difference]: Start difference. First operand 31095 states and 51130 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-12-20 20:10:21,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:10:21,017 INFO L93 Difference]: Finished difference Result 68403 states and 112484 transitions. [2023-12-20 20:10:21,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:10:21,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 689 [2023-12-20 20:10:21,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:10:21,099 INFO L225 Difference]: With dead ends: 68403 [2023-12-20 20:10:21,099 INFO L226 Difference]: Without dead ends: 37309 [2023-12-20 20:10:21,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 687 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:10:21,152 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 178 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:10:21,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 1096 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:10:21,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37309 states. [2023-12-20 20:10:24,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37309 to 37267. [2023-12-20 20:10:24,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37267 states, 27030 states have (on average 1.535257121716611) internal successors, (41498), 27202 states have internal predecessors, (41498), 9888 states have call successors, (9888), 348 states have call predecessors, (9888), 348 states have return successors, (9888), 9716 states have call predecessors, (9888), 9888 states have call successors, (9888) [2023-12-20 20:10:24,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37267 states to 37267 states and 61274 transitions. [2023-12-20 20:10:24,292 INFO L78 Accepts]: Start accepts. Automaton has 37267 states and 61274 transitions. Word has length 689 [2023-12-20 20:10:24,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:10:24,293 INFO L495 AbstractCegarLoop]: Abstraction has 37267 states and 61274 transitions. [2023-12-20 20:10:24,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-12-20 20:10:24,293 INFO L276 IsEmpty]: Start isEmpty. Operand 37267 states and 61274 transitions. [2023-12-20 20:10:24,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2023-12-20 20:10:24,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:10:24,309 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:10:24,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-20 20:10:24,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-20 20:10:24,517 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:10:24,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:10:24,517 INFO L85 PathProgramCache]: Analyzing trace with hash 24568312, now seen corresponding path program 1 times [2023-12-20 20:10:24,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:10:24,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343174307] [2023-12-20 20:10:24,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:24,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:10:24,551 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:10:24,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1989655507] [2023-12-20 20:10:24,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:24,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:10:24,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:10:24,552 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 20:10:24,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 20:10:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:10:24,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 1541 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:10:24,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:10:25,367 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-12-20 20:10:25,367 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:10:25,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:10:25,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343174307] [2023-12-20 20:10:25,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:10:25,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989655507] [2023-12-20 20:10:25,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989655507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:10:25,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:10:25,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 20:10:25,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131047868] [2023-12-20 20:10:25,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:10:25,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:10:25,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:10:25,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:10:25,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:10:25,369 INFO L87 Difference]: Start difference. First operand 37267 states and 61274 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-12-20 20:10:29,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:10:29,993 INFO L93 Difference]: Finished difference Result 111799 states and 183820 transitions. [2023-12-20 20:10:29,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:10:29,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 690 [2023-12-20 20:10:29,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:10:30,168 INFO L225 Difference]: With dead ends: 111799 [2023-12-20 20:10:30,169 INFO L226 Difference]: Without dead ends: 74533 [2023-12-20 20:10:30,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 688 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:10:30,227 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 193 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:10:30,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1127 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:10:30,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74533 states. [2023-12-20 20:10:36,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74533 to 74531. [2023-12-20 20:10:36,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74531 states, 54058 states have (on average 1.5330570868326612) internal successors, (82874), 54402 states have internal predecessors, (82874), 19776 states have call successors, (19776), 696 states have call predecessors, (19776), 696 states have return successors, (19776), 19432 states have call predecessors, (19776), 19776 states have call successors, (19776) [2023-12-20 20:10:36,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74531 states to 74531 states and 122426 transitions. [2023-12-20 20:10:36,493 INFO L78 Accepts]: Start accepts. Automaton has 74531 states and 122426 transitions. Word has length 690 [2023-12-20 20:10:36,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:10:36,494 INFO L495 AbstractCegarLoop]: Abstraction has 74531 states and 122426 transitions. [2023-12-20 20:10:36,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-12-20 20:10:36,494 INFO L276 IsEmpty]: Start isEmpty. Operand 74531 states and 122426 transitions. [2023-12-20 20:10:36,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2023-12-20 20:10:36,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:10:36,520 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:10:36,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-20 20:10:36,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:10:36,727 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:10:36,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:10:36,727 INFO L85 PathProgramCache]: Analyzing trace with hash 2101905210, now seen corresponding path program 1 times [2023-12-20 20:10:36,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:10:36,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066211938] [2023-12-20 20:10:36,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:36,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:10:36,761 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:10:36,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1922239174] [2023-12-20 20:10:36,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:36,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:10:36,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:10:36,762 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 20:10:36,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 20:10:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:10:37,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 1543 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-20 20:10:37,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:10:39,005 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 16012 proven. 537 refuted. 0 times theorem prover too weak. 6995 trivial. 0 not checked. [2023-12-20 20:10:39,005 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:10:40,903 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 522 proven. 441 refuted. 0 times theorem prover too weak. 22581 trivial. 0 not checked. [2023-12-20 20:10:40,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:10:40,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066211938] [2023-12-20 20:10:40,904 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:10:40,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922239174] [2023-12-20 20:10:40,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922239174] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:10:40,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:10:40,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35 [2023-12-20 20:10:40,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039003092] [2023-12-20 20:10:40,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:10:40,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-20 20:10:40,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:10:40,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-20 20:10:40,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=928, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 20:10:40,909 INFO L87 Difference]: Start difference. First operand 74531 states and 122426 transitions. Second operand has 35 states, 35 states have (on average 7.428571428571429) internal successors, (260), 35 states have internal predecessors, (260), 11 states have call successors, (165), 6 states have call predecessors, (165), 13 states have return successors, (166), 11 states have call predecessors, (166), 11 states have call successors, (166) [2023-12-20 20:11:54,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:11:54,591 INFO L93 Difference]: Finished difference Result 664566 states and 1069517 transitions. [2023-12-20 20:11:54,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2023-12-20 20:11:54,591 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.428571428571429) internal successors, (260), 35 states have internal predecessors, (260), 11 states have call successors, (165), 6 states have call predecessors, (165), 13 states have return successors, (166), 11 states have call predecessors, (166), 11 states have call successors, (166) Word has length 690 [2023-12-20 20:11:54,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:11:57,183 INFO L225 Difference]: With dead ends: 664566 [2023-12-20 20:11:57,184 INFO L226 Difference]: Without dead ends: 627300 [2023-12-20 20:11:57,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1537 GetRequests, 1371 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9797 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=6458, Invalid=21598, Unknown=0, NotChecked=0, Total=28056 [2023-12-20 20:11:57,462 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 7475 mSDsluCounter, 8185 mSDsCounter, 0 mSdLazyCounter, 9958 mSolverCounterSat, 5071 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7577 SdHoareTripleChecker+Valid, 9720 SdHoareTripleChecker+Invalid, 15029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5071 IncrementalHoareTripleChecker+Valid, 9958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-12-20 20:11:57,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7577 Valid, 9720 Invalid, 15029 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5071 Valid, 9958 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-12-20 20:11:58,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627300 states.