/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_operatoramount_amount500_file-35.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:08:02,423 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:08:02,522 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 04:08:02,527 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:08:02,528 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:08:02,558 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:08:02,559 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:08:02,560 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:08:02,561 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:08:02,564 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:08:02,565 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:08:02,565 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:08:02,566 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:08:02,567 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:08:02,567 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:08:02,568 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:08:02,568 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:08:02,568 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:08:02,568 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:08:02,569 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:08:02,569 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:08:02,569 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:08:02,569 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:08:02,570 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:08:02,570 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:08:02,570 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:08:02,570 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:08:02,570 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:08:02,571 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:08:02,571 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:08:02,572 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:08:02,573 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:08:02,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:08:02,573 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:08:02,573 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:08:02,573 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:08:02,573 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:08:02,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:08:02,574 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:08:02,574 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:08:02,574 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:08:02,574 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:08:02,575 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:08:02,575 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:08:02,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:08:02,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:08:02,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:08:02,972 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:08:02,973 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:08:02,974 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-35.i [2023-12-16 04:08:04,611 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:08:04,878 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:08:04,878 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-35.i [2023-12-16 04:08:04,900 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/194f8fb18/4f1c140598694b67b729bf17d36f906b/FLAG0ac23cd6b [2023-12-16 04:08:04,922 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/194f8fb18/4f1c140598694b67b729bf17d36f906b [2023-12-16 04:08:04,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:08:04,926 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:08:04,928 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:08:04,929 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:08:04,933 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:08:04,934 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:08:04" (1/1) ... [2023-12-16 04:08:04,934 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6160ab10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:04, skipping insertion in model container [2023-12-16 04:08:04,934 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:08:04" (1/1) ... [2023-12-16 04:08:04,998 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:08:05,134 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_operatoramount_amount500_file-35.i[916,929] [2023-12-16 04:08:05,380 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:08:05,409 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:08:05,432 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_operatoramount_amount500_file-35.i[916,929] [2023-12-16 04:08:05,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:08:05,584 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:08:05,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:05 WrapperNode [2023-12-16 04:08:05,584 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:08:05,586 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:08:05,586 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:08:05,586 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:08:05,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:05" (1/1) ... [2023-12-16 04:08:05,619 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:05" (1/1) ... [2023-12-16 04:08:05,794 INFO L138 Inliner]: procedures = 26, calls = 92, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 698 [2023-12-16 04:08:05,796 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:08:05,797 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:08:05,797 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:08:05,797 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:08:05,807 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:05" (1/1) ... [2023-12-16 04:08:05,807 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:05" (1/1) ... [2023-12-16 04:08:05,830 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:05" (1/1) ... [2023-12-16 04:08:05,982 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 04:08:05,982 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:05" (1/1) ... [2023-12-16 04:08:05,983 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:05" (1/1) ... [2023-12-16 04:08:06,016 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:05" (1/1) ... [2023-12-16 04:08:06,033 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:05" (1/1) ... [2023-12-16 04:08:06,053 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:05" (1/1) ... [2023-12-16 04:08:06,061 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:05" (1/1) ... [2023-12-16 04:08:06,083 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:08:06,084 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:08:06,084 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:08:06,085 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:08:06,085 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:05" (1/1) ... [2023-12-16 04:08:06,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:08:06,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:06,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 04:08:06,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 04:08:06,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:08:06,171 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 04:08:06,171 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 04:08:06,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:08:06,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:08:06,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:08:06,342 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:08:06,344 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:08:07,256 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:08:07,330 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:08:07,330 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 04:08:07,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:08:07 BoogieIcfgContainer [2023-12-16 04:08:07,331 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:08:07,334 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:08:07,334 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:08:07,337 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:08:07,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:08:04" (1/3) ... [2023-12-16 04:08:07,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a495dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:08:07, skipping insertion in model container [2023-12-16 04:08:07,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:05" (2/3) ... [2023-12-16 04:08:07,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a495dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:08:07, skipping insertion in model container [2023-12-16 04:08:07,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:08:07" (3/3) ... [2023-12-16 04:08:07,341 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-35.i [2023-12-16 04:08:07,356 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:08:07,357 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:08:07,411 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:08:07,416 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;@74293988, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:08:07,417 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:08:07,422 INFO L276 IsEmpty]: Start isEmpty. Operand has 251 states, 169 states have (on average 1.5384615384615385) internal successors, (260), 170 states have internal predecessors, (260), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-16 04:08:07,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2023-12-16 04:08:07,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:07,450 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:07,451 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:07,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:07,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1112007793, now seen corresponding path program 1 times [2023-12-16 04:08:07,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:07,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315879224] [2023-12-16 04:08:07,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:07,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:07,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:07,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315879224] [2023-12-16 04:08:07,899 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 04:08:07,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954418276] [2023-12-16 04:08:07,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:07,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:07,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:07,910 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:08:07,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 04:08:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:08,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 1344 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 04:08:08,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:08,479 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 12168 trivial. 0 not checked. [2023-12-16 04:08:08,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:08:08,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954418276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:08:08,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:08:08,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:08:08,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965762008] [2023-12-16 04:08:08,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:08:08,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 04:08:08,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:08,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 04:08:08,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:08:08,521 INFO L87 Difference]: Start difference. First operand has 251 states, 169 states have (on average 1.5384615384615385) internal successors, (260), 170 states have internal predecessors, (260), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) Second operand has 2 states, 2 states have (on average 66.5) internal successors, (133), 2 states have internal predecessors, (133), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 2 states have call successors, (79) [2023-12-16 04:08:08,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:08,590 INFO L93 Difference]: Finished difference Result 498 states and 911 transitions. [2023-12-16 04:08:08,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 04:08:08,593 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 66.5) internal successors, (133), 2 states have internal predecessors, (133), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 2 states have call successors, (79) Word has length 523 [2023-12-16 04:08:08,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:08,602 INFO L225 Difference]: With dead ends: 498 [2023-12-16 04:08:08,602 INFO L226 Difference]: Without dead ends: 248 [2023-12-16 04:08:08,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:08:08,615 INFO L413 NwaCegarLoop]: 406 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, 406 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:08,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 406 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:08:08,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-12-16 04:08:08,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2023-12-16 04:08:08,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 167 states have (on average 1.5029940119760479) internal successors, (251), 167 states have internal predecessors, (251), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-16 04:08:08,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 409 transitions. [2023-12-16 04:08:08,676 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 409 transitions. Word has length 523 [2023-12-16 04:08:08,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:08,676 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 409 transitions. [2023-12-16 04:08:08,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 66.5) internal successors, (133), 2 states have internal predecessors, (133), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 2 states have call successors, (79) [2023-12-16 04:08:08,677 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 409 transitions. [2023-12-16 04:08:08,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2023-12-16 04:08:08,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:08,688 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:08,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 04:08:08,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-16 04:08:08,901 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:08,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:08,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1965626973, now seen corresponding path program 1 times [2023-12-16 04:08:08,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:08,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325946062] [2023-12-16 04:08:08,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:08,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:09,070 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:09,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [243676812] [2023-12-16 04:08:09,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:09,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:09,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:09,073 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:08:09,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 04:08:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:09,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 1346 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:08:09,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:09,729 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-16 04:08:09,730 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:08:09,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:09,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325946062] [2023-12-16 04:08:09,730 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:09,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243676812] [2023-12-16 04:08:09,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243676812] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:08:09,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:08:09,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:08:09,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412392994] [2023-12-16 04:08:09,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:08:09,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:08:09,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:09,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:08:09,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:08:09,734 INFO L87 Difference]: Start difference. First operand 248 states and 409 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 04:08:09,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:09,943 INFO L93 Difference]: Finished difference Result 648 states and 1072 transitions. [2023-12-16 04:08:09,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:08:09,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 523 [2023-12-16 04:08:09,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:09,952 INFO L225 Difference]: With dead ends: 648 [2023-12-16 04:08:09,952 INFO L226 Difference]: Without dead ends: 401 [2023-12-16 04:08:09,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:08:09,954 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 252 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:09,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 805 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:08:09,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2023-12-16 04:08:10,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 398. [2023-12-16 04:08:10,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 285 states have (on average 1.5403508771929824) internal successors, (439), 286 states have internal predecessors, (439), 110 states have call successors, (110), 2 states have call predecessors, (110), 2 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) [2023-12-16 04:08:10,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 659 transitions. [2023-12-16 04:08:10,036 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 659 transitions. Word has length 523 [2023-12-16 04:08:10,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:10,038 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 659 transitions. [2023-12-16 04:08:10,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 04:08:10,038 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 659 transitions. [2023-12-16 04:08:10,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2023-12-16 04:08:10,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:10,084 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:10,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 04:08:10,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-16 04:08:10,295 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:10,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:10,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1767085085, now seen corresponding path program 1 times [2023-12-16 04:08:10,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:10,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872776904] [2023-12-16 04:08:10,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:10,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:10,419 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:10,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1464489632] [2023-12-16 04:08:10,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:10,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:10,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:10,429 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:08:10,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 04:08:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:10,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 1344 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:08:10,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:10,868 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-16 04:08:10,869 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:08:10,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:10,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872776904] [2023-12-16 04:08:10,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:10,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464489632] [2023-12-16 04:08:10,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464489632] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:08:10,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:08:10,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:08:10,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914903096] [2023-12-16 04:08:10,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:08:10,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:08:10,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:10,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:08:10,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:08:10,874 INFO L87 Difference]: Start difference. First operand 398 states and 659 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 04:08:11,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:11,029 INFO L93 Difference]: Finished difference Result 1116 states and 1842 transitions. [2023-12-16 04:08:11,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:08:11,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 523 [2023-12-16 04:08:11,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:11,044 INFO L225 Difference]: With dead ends: 1116 [2023-12-16 04:08:11,044 INFO L226 Difference]: Without dead ends: 719 [2023-12-16 04:08:11,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:08:11,048 INFO L413 NwaCegarLoop]: 736 mSDtfsCounter, 341 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:11,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 1125 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:08:11,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2023-12-16 04:08:11,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 441. [2023-12-16 04:08:11,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 328 states have (on average 1.5426829268292683) internal successors, (506), 329 states have internal predecessors, (506), 110 states have call successors, (110), 2 states have call predecessors, (110), 2 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) [2023-12-16 04:08:11,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 726 transitions. [2023-12-16 04:08:11,112 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 726 transitions. Word has length 523 [2023-12-16 04:08:11,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:11,117 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 726 transitions. [2023-12-16 04:08:11,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 04:08:11,117 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 726 transitions. [2023-12-16 04:08:11,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2023-12-16 04:08:11,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:11,123 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:11,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 04:08:11,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:11,333 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:11,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:11,334 INFO L85 PathProgramCache]: Analyzing trace with hash 869691807, now seen corresponding path program 1 times [2023-12-16 04:08:11,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:11,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711991347] [2023-12-16 04:08:11,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:11,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:11,421 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:11,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1284780228] [2023-12-16 04:08:11,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:11,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:11,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:11,423 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:08:11,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 04:08:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:11,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 1343 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 04:08:11,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-16 04:08:13,292 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:08:13,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:13,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711991347] [2023-12-16 04:08:13,293 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:13,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284780228] [2023-12-16 04:08:13,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284780228] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:08:13,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:08:13,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:08:13,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66432556] [2023-12-16 04:08:13,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:08:13,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:08:13,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:13,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:08:13,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:08:13,298 INFO L87 Difference]: Start difference. First operand 441 states and 726 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 04:08:13,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:13,385 INFO L93 Difference]: Finished difference Result 1311 states and 2158 transitions. [2023-12-16 04:08:13,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:08:13,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 523 [2023-12-16 04:08:13,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:13,391 INFO L225 Difference]: With dead ends: 1311 [2023-12-16 04:08:13,391 INFO L226 Difference]: Without dead ends: 871 [2023-12-16 04:08:13,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:08:13,396 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 342 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:13,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 798 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:08:13,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2023-12-16 04:08:13,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 869. [2023-12-16 04:08:13,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 644 states have (on average 1.5248447204968945) internal successors, (982), 646 states have internal predecessors, (982), 220 states have call successors, (220), 4 states have call predecessors, (220), 4 states have return successors, (220), 218 states have call predecessors, (220), 220 states have call successors, (220) [2023-12-16 04:08:13,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1422 transitions. [2023-12-16 04:08:13,470 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1422 transitions. Word has length 523 [2023-12-16 04:08:13,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:13,471 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 1422 transitions. [2023-12-16 04:08:13,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 04:08:13,471 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1422 transitions. [2023-12-16 04:08:13,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2023-12-16 04:08:13,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:13,476 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:13,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-16 04:08:13,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:13,685 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:13,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:13,686 INFO L85 PathProgramCache]: Analyzing trace with hash -816488031, now seen corresponding path program 1 times [2023-12-16 04:08:13,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:13,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947232033] [2023-12-16 04:08:13,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:13,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:13,756 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:13,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [849061980] [2023-12-16 04:08:13,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:13,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:13,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:13,759 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:08:13,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 04:08:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:14,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 1344 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 04:08:14,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:15,008 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-16 04:08:15,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:08:15,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:15,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947232033] [2023-12-16 04:08:15,009 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:15,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849061980] [2023-12-16 04:08:15,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849061980] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:08:15,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:08:15,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:08:15,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327164506] [2023-12-16 04:08:15,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:08:15,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:08:15,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:15,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:08:15,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:08:15,012 INFO L87 Difference]: Start difference. First operand 869 states and 1422 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 04:08:15,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:15,906 INFO L93 Difference]: Finished difference Result 2467 states and 4011 transitions. [2023-12-16 04:08:15,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:08:15,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 523 [2023-12-16 04:08:15,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:15,915 INFO L225 Difference]: With dead ends: 2467 [2023-12-16 04:08:15,915 INFO L226 Difference]: Without dead ends: 1599 [2023-12-16 04:08:15,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:08:15,918 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 812 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:15,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 1642 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 04:08:15,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2023-12-16 04:08:16,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1578. [2023-12-16 04:08:16,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1578 states, 1179 states have (on average 1.5055131467345209) internal successors, (1775), 1185 states have internal predecessors, (1775), 388 states have call successors, (388), 10 states have call predecessors, (388), 10 states have return successors, (388), 382 states have call predecessors, (388), 388 states have call successors, (388) [2023-12-16 04:08:16,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 2551 transitions. [2023-12-16 04:08:16,029 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 2551 transitions. Word has length 523 [2023-12-16 04:08:16,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:16,032 INFO L495 AbstractCegarLoop]: Abstraction has 1578 states and 2551 transitions. [2023-12-16 04:08:16,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 04:08:16,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 2551 transitions. [2023-12-16 04:08:16,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2023-12-16 04:08:16,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:16,038 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:16,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 04:08:16,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:16,250 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:16,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:16,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1429091423, now seen corresponding path program 1 times [2023-12-16 04:08:16,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:16,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477401884] [2023-12-16 04:08:16,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:16,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:16,308 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:16,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116854977] [2023-12-16 04:08:16,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:16,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:16,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:16,310 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:08:16,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 04:08:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:16,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 1343 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 04:08:16,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:17,261 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-16 04:08:17,261 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:08:17,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:17,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477401884] [2023-12-16 04:08:17,262 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:17,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116854977] [2023-12-16 04:08:17,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116854977] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:08:17,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:08:17,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:08:17,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632600252] [2023-12-16 04:08:17,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:08:17,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:08:17,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:17,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:08:17,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:08:17,265 INFO L87 Difference]: Start difference. First operand 1578 states and 2551 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 04:08:17,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:17,863 INFO L93 Difference]: Finished difference Result 4844 states and 7825 transitions. [2023-12-16 04:08:17,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:08:17,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 523 [2023-12-16 04:08:17,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:17,880 INFO L225 Difference]: With dead ends: 4844 [2023-12-16 04:08:17,880 INFO L226 Difference]: Without dead ends: 3267 [2023-12-16 04:08:17,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:08:17,886 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 580 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:17,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 1361 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 04:08:17,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2023-12-16 04:08:18,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 1772. [2023-12-16 04:08:18,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1772 states, 1291 states have (on average 1.4887683965917893) internal successors, (1922), 1297 states have internal predecessors, (1922), 467 states have call successors, (467), 13 states have call predecessors, (467), 13 states have return successors, (467), 461 states have call predecessors, (467), 467 states have call successors, (467) [2023-12-16 04:08:18,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 2856 transitions. [2023-12-16 04:08:18,084 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 2856 transitions. Word has length 523 [2023-12-16 04:08:18,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:18,085 INFO L495 AbstractCegarLoop]: Abstraction has 1772 states and 2856 transitions. [2023-12-16 04:08:18,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 04:08:18,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 2856 transitions. [2023-12-16 04:08:18,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2023-12-16 04:08:18,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:18,091 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:18,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 04:08:18,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:18,308 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:18,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:18,308 INFO L85 PathProgramCache]: Analyzing trace with hash 760237219, now seen corresponding path program 1 times [2023-12-16 04:08:18,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:18,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884925063] [2023-12-16 04:08:18,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:18,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:18,395 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:18,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [36739749] [2023-12-16 04:08:18,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:18,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:18,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:18,410 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:08:18,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 04:08:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:18,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 1342 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:08:18,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:18,970 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-16 04:08:18,971 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:08:18,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:18,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884925063] [2023-12-16 04:08:18,971 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:18,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36739749] [2023-12-16 04:08:18,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36739749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:08:18,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:08:18,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:08:18,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258391644] [2023-12-16 04:08:18,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:08:18,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:08:18,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:18,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:08:18,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:08:18,974 INFO L87 Difference]: Start difference. First operand 1772 states and 2856 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 04:08:19,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:19,112 INFO L93 Difference]: Finished difference Result 3409 states and 5493 transitions. [2023-12-16 04:08:19,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:08:19,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 524 [2023-12-16 04:08:19,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:19,123 INFO L225 Difference]: With dead ends: 3409 [2023-12-16 04:08:19,126 INFO L226 Difference]: Without dead ends: 1832 [2023-12-16 04:08:19,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:08:19,148 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 217 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:19,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 957 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:08:19,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2023-12-16 04:08:19,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 1385. [2023-12-16 04:08:19,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1385 states, 1077 states have (on average 1.5134633240482822) internal successors, (1630), 1079 states have internal predecessors, (1630), 297 states have call successors, (297), 10 states have call predecessors, (297), 10 states have return successors, (297), 295 states have call predecessors, (297), 297 states have call successors, (297) [2023-12-16 04:08:19,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 2224 transitions. [2023-12-16 04:08:19,347 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 2224 transitions. Word has length 524 [2023-12-16 04:08:19,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:19,348 INFO L495 AbstractCegarLoop]: Abstraction has 1385 states and 2224 transitions. [2023-12-16 04:08:19,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 04:08:19,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 2224 transitions. [2023-12-16 04:08:19,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2023-12-16 04:08:19,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:19,354 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:19,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 04:08:19,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:19,564 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:19,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:19,565 INFO L85 PathProgramCache]: Analyzing trace with hash 342840613, now seen corresponding path program 1 times [2023-12-16 04:08:19,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:19,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764313753] [2023-12-16 04:08:19,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:19,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:19,683 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:19,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1973053753] [2023-12-16 04:08:19,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:19,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:19,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:19,688 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:08:19,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 04:08:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:20,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:08:20,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:20,525 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 5898 proven. 144 refuted. 0 times theorem prover too weak. 6282 trivial. 0 not checked. [2023-12-16 04:08:20,525 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:08:20,886 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 90 proven. 144 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-12-16 04:08:20,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:20,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764313753] [2023-12-16 04:08:20,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:20,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973053753] [2023-12-16 04:08:20,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973053753] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:08:20,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:08:20,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 04:08:20,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574194674] [2023-12-16 04:08:20,887 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:08:20,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:08:20,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:20,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:08:20,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:08:20,890 INFO L87 Difference]: Start difference. First operand 1385 states and 2224 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 2 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) [2023-12-16 04:08:21,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:21,406 INFO L93 Difference]: Finished difference Result 2565 states and 4106 transitions. [2023-12-16 04:08:21,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:08:21,408 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 2 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) Word has length 524 [2023-12-16 04:08:21,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:21,417 INFO L225 Difference]: With dead ends: 2565 [2023-12-16 04:08:21,417 INFO L226 Difference]: Without dead ends: 1362 [2023-12-16 04:08:21,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1050 GetRequests, 1040 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:08:21,423 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 582 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:21,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 780 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:08:21,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2023-12-16 04:08:21,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1042. [2023-12-16 04:08:21,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 795 states have (on average 1.471698113207547) internal successors, (1170), 795 states have internal predecessors, (1170), 237 states have call successors, (237), 9 states have call predecessors, (237), 9 states have return successors, (237), 237 states have call predecessors, (237), 237 states have call successors, (237) [2023-12-16 04:08:21,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1644 transitions. [2023-12-16 04:08:21,496 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1644 transitions. Word has length 524 [2023-12-16 04:08:21,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:21,497 INFO L495 AbstractCegarLoop]: Abstraction has 1042 states and 1644 transitions. [2023-12-16 04:08:21,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 2 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) [2023-12-16 04:08:21,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1644 transitions. [2023-12-16 04:08:21,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2023-12-16 04:08:21,501 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:21,502 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:21,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 04:08:21,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-16 04:08:21,712 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:21,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:21,712 INFO L85 PathProgramCache]: Analyzing trace with hash 511620195, now seen corresponding path program 1 times [2023-12-16 04:08:21,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:21,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259429264] [2023-12-16 04:08:21,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:21,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:21,775 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:21,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1799050972] [2023-12-16 04:08:21,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:21,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:21,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:21,777 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:08:21,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 04:08:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:22,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 1342 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 04:08:22,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:23,301 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-16 04:08:23,301 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:08:23,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:23,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259429264] [2023-12-16 04:08:23,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:23,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799050972] [2023-12-16 04:08:23,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799050972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:08:23,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:08:23,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 04:08:23,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638833006] [2023-12-16 04:08:23,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:08:23,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 04:08:23,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:23,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 04:08:23,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:08:23,304 INFO L87 Difference]: Start difference. First operand 1042 states and 1644 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 04:08:25,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:25,257 INFO L93 Difference]: Finished difference Result 3113 states and 4883 transitions. [2023-12-16 04:08:25,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 04:08:25,258 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 524 [2023-12-16 04:08:25,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:25,267 INFO L225 Difference]: With dead ends: 3113 [2023-12-16 04:08:25,267 INFO L226 Difference]: Without dead ends: 2161 [2023-12-16 04:08:25,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:08:25,272 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 2321 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2321 SdHoareTripleChecker+Valid, 2231 SdHoareTripleChecker+Invalid, 1373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:25,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2321 Valid, 2231 Invalid, 1373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-16 04:08:25,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2023-12-16 04:08:25,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 1386. [2023-12-16 04:08:25,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1139 states have (on average 1.4899034240561897) internal successors, (1697), 1139 states have internal predecessors, (1697), 237 states have call successors, (237), 9 states have call predecessors, (237), 9 states have return successors, (237), 237 states have call predecessors, (237), 237 states have call successors, (237) [2023-12-16 04:08:25,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 2171 transitions. [2023-12-16 04:08:25,360 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 2171 transitions. Word has length 524 [2023-12-16 04:08:25,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:25,361 INFO L495 AbstractCegarLoop]: Abstraction has 1386 states and 2171 transitions. [2023-12-16 04:08:25,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 04:08:25,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 2171 transitions. [2023-12-16 04:08:25,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2023-12-16 04:08:25,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:25,366 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:25,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 04:08:25,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:25,577 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:25,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:25,578 INFO L85 PathProgramCache]: Analyzing trace with hash -704533531, now seen corresponding path program 1 times [2023-12-16 04:08:25,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:25,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709229723] [2023-12-16 04:08:25,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:25,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:25,650 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:25,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [928710139] [2023-12-16 04:08:25,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:25,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:25,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:25,653 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:08:25,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 04:08:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:26,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 1343 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:08:26,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:26,180 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-16 04:08:26,180 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:08:26,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:26,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709229723] [2023-12-16 04:08:26,181 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:26,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928710139] [2023-12-16 04:08:26,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928710139] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:08:26,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:08:26,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:08:26,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930836957] [2023-12-16 04:08:26,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:08:26,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:08:26,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:26,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:08:26,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:08:26,184 INFO L87 Difference]: Start difference. First operand 1386 states and 2171 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 04:08:26,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:26,353 INFO L93 Difference]: Finished difference Result 3610 states and 5667 transitions. [2023-12-16 04:08:26,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:08:26,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 524 [2023-12-16 04:08:26,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:26,363 INFO L225 Difference]: With dead ends: 3610 [2023-12-16 04:08:26,363 INFO L226 Difference]: Without dead ends: 2351 [2023-12-16 04:08:26,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:08:26,367 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 361 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:26,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 1106 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:08:26,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2351 states. [2023-12-16 04:08:26,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2351 to 2263. [2023-12-16 04:08:26,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 1852 states have (on average 1.4735421166306695) internal successors, (2729), 1852 states have internal predecessors, (2729), 395 states have call successors, (395), 15 states have call predecessors, (395), 15 states have return successors, (395), 395 states have call predecessors, (395), 395 states have call successors, (395) [2023-12-16 04:08:26,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 3519 transitions. [2023-12-16 04:08:26,518 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 3519 transitions. Word has length 524 [2023-12-16 04:08:26,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:26,519 INFO L495 AbstractCegarLoop]: Abstraction has 2263 states and 3519 transitions. [2023-12-16 04:08:26,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 04:08:26,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 3519 transitions. [2023-12-16 04:08:26,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2023-12-16 04:08:26,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:26,526 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:26,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 04:08:26,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-16 04:08:26,738 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:26,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:26,738 INFO L85 PathProgramCache]: Analyzing trace with hash -429773917, now seen corresponding path program 1 times [2023-12-16 04:08:26,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:26,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748932199] [2023-12-16 04:08:26,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:26,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:26,850 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:26,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [789906801] [2023-12-16 04:08:26,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:26,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:26,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:26,867 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:08:26,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 04:08:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:27,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 1344 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 04:08:27,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:28,667 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 7640 proven. 177 refuted. 0 times theorem prover too weak. 4507 trivial. 0 not checked. [2023-12-16 04:08:28,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:08:29,133 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 57 proven. 177 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-12-16 04:08:29,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:29,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748932199] [2023-12-16 04:08:29,134 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:29,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789906801] [2023-12-16 04:08:29,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789906801] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:08:29,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:08:29,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-16 04:08:29,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463927179] [2023-12-16 04:08:29,135 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:08:29,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 04:08:29,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:29,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 04:08:29,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-16 04:08:29,137 INFO L87 Difference]: Start difference. First operand 2263 states and 3519 transitions. Second operand has 12 states, 12 states have (on average 18.916666666666668) internal successors, (227), 12 states have internal predecessors, (227), 5 states have call successors, (138), 3 states have call predecessors, (138), 5 states have return successors, (139), 5 states have call predecessors, (139), 5 states have call successors, (139) [2023-12-16 04:08:30,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:30,004 INFO L93 Difference]: Finished difference Result 4405 states and 6792 transitions. [2023-12-16 04:08:30,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 04:08:30,007 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 18.916666666666668) internal successors, (227), 12 states have internal predecessors, (227), 5 states have call successors, (138), 3 states have call predecessors, (138), 5 states have return successors, (139), 5 states have call predecessors, (139), 5 states have call successors, (139) Word has length 524 [2023-12-16 04:08:30,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:30,023 INFO L225 Difference]: With dead ends: 4405 [2023-12-16 04:08:30,023 INFO L226 Difference]: Without dead ends: 2353 [2023-12-16 04:08:30,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1056 GetRequests, 1037 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2023-12-16 04:08:30,031 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 462 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:30,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 956 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 04:08:30,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2023-12-16 04:08:30,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 2323. [2023-12-16 04:08:30,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2323 states, 1897 states have (on average 1.4454401686874012) internal successors, (2742), 1897 states have internal predecessors, (2742), 395 states have call successors, (395), 30 states have call predecessors, (395), 30 states have return successors, (395), 395 states have call predecessors, (395), 395 states have call successors, (395) [2023-12-16 04:08:30,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 3532 transitions. [2023-12-16 04:08:30,214 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 3532 transitions. Word has length 524 [2023-12-16 04:08:30,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:30,215 INFO L495 AbstractCegarLoop]: Abstraction has 2323 states and 3532 transitions. [2023-12-16 04:08:30,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.916666666666668) internal successors, (227), 12 states have internal predecessors, (227), 5 states have call successors, (138), 3 states have call predecessors, (138), 5 states have return successors, (139), 5 states have call predecessors, (139), 5 states have call successors, (139) [2023-12-16 04:08:30,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 3532 transitions. [2023-12-16 04:08:30,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2023-12-16 04:08:30,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:30,221 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:30,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 04:08:30,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-16 04:08:30,432 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:30,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:30,433 INFO L85 PathProgramCache]: Analyzing trace with hash -824140703, now seen corresponding path program 1 times [2023-12-16 04:08:30,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:30,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575338555] [2023-12-16 04:08:30,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:30,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:30,493 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:30,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [554549402] [2023-12-16 04:08:30,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:30,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:30,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:30,495 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:08:30,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 04:08:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:31,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 1342 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 04:08:31,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:31,479 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 6843 proven. 120 refuted. 0 times theorem prover too weak. 5361 trivial. 0 not checked. [2023-12-16 04:08:31,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:08:31,932 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 342 proven. 123 refuted. 0 times theorem prover too weak. 11859 trivial. 0 not checked. [2023-12-16 04:08:31,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:31,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575338555] [2023-12-16 04:08:31,932 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:31,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554549402] [2023-12-16 04:08:31,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554549402] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:08:31,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:08:31,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-12-16 04:08:31,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570777171] [2023-12-16 04:08:31,933 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:08:31,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 04:08:31,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:31,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 04:08:31,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2023-12-16 04:08:31,936 INFO L87 Difference]: Start difference. First operand 2323 states and 3532 transitions. Second operand has 18 states, 18 states have (on average 11.666666666666666) internal successors, (210), 18 states have internal predecessors, (210), 5 states have call successors, (116), 3 states have call predecessors, (116), 7 states have return successors, (117), 5 states have call predecessors, (117), 5 states have call successors, (117) [2023-12-16 04:08:33,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:33,495 INFO L93 Difference]: Finished difference Result 5071 states and 7651 transitions. [2023-12-16 04:08:33,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 04:08:33,496 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 11.666666666666666) internal successors, (210), 18 states have internal predecessors, (210), 5 states have call successors, (116), 3 states have call predecessors, (116), 7 states have return successors, (117), 5 states have call predecessors, (117), 5 states have call successors, (117) Word has length 524 [2023-12-16 04:08:33,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:33,509 INFO L225 Difference]: With dead ends: 5071 [2023-12-16 04:08:33,510 INFO L226 Difference]: Without dead ends: 2971 [2023-12-16 04:08:33,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1058 GetRequests, 1031 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=259, Invalid=553, Unknown=0, NotChecked=0, Total=812 [2023-12-16 04:08:33,516 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 1924 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 659 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1965 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 1812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 659 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:33,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1965 Valid, 1360 Invalid, 1812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [659 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 04:08:33,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2023-12-16 04:08:33,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 2925. [2023-12-16 04:08:33,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2925 states, 2392 states have (on average 1.431438127090301) internal successors, (3424), 2394 states have internal predecessors, (3424), 477 states have call successors, (477), 55 states have call predecessors, (477), 55 states have return successors, (477), 475 states have call predecessors, (477), 477 states have call successors, (477) [2023-12-16 04:08:33,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4378 transitions. [2023-12-16 04:08:33,714 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4378 transitions. Word has length 524 [2023-12-16 04:08:33,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:33,715 INFO L495 AbstractCegarLoop]: Abstraction has 2925 states and 4378 transitions. [2023-12-16 04:08:33,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.666666666666666) internal successors, (210), 18 states have internal predecessors, (210), 5 states have call successors, (116), 3 states have call predecessors, (116), 7 states have return successors, (117), 5 states have call predecessors, (117), 5 states have call successors, (117) [2023-12-16 04:08:33,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4378 transitions. [2023-12-16 04:08:33,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2023-12-16 04:08:33,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:33,721 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:33,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-16 04:08:33,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-16 04:08:33,931 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:33,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:33,932 INFO L85 PathProgramCache]: Analyzing trace with hash 432159842, now seen corresponding path program 1 times [2023-12-16 04:08:33,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:33,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019848177] [2023-12-16 04:08:33,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:33,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:34,021 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:34,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [494122617] [2023-12-16 04:08:34,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:34,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:34,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:34,025 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:08:34,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-16 04:08:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:34,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 1347 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 04:08:34,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:34,995 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-16 04:08:34,995 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:08:34,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:34,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019848177] [2023-12-16 04:08:34,996 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:34,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494122617] [2023-12-16 04:08:34,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494122617] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:08:34,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:08:34,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:08:34,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695791523] [2023-12-16 04:08:34,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:08:35,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:08:35,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:35,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:08:35,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:08:35,001 INFO L87 Difference]: Start difference. First operand 2925 states and 4378 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 04:08:35,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:35,633 INFO L93 Difference]: Finished difference Result 9534 states and 14317 transitions. [2023-12-16 04:08:35,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:08:35,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 525 [2023-12-16 04:08:35,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:35,674 INFO L225 Difference]: With dead ends: 9534 [2023-12-16 04:08:35,674 INFO L226 Difference]: Without dead ends: 6781 [2023-12-16 04:08:35,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:08:35,683 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 424 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:35,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 1529 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:08:35,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6781 states. [2023-12-16 04:08:36,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6781 to 5613. [2023-12-16 04:08:36,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5613 states, 4636 states have (on average 1.4367989646246764) internal successors, (6661), 4640 states have internal predecessors, (6661), 875 states have call successors, (875), 101 states have call predecessors, (875), 101 states have return successors, (875), 871 states have call predecessors, (875), 875 states have call successors, (875) [2023-12-16 04:08:36,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5613 states to 5613 states and 8411 transitions. [2023-12-16 04:08:36,253 INFO L78 Accepts]: Start accepts. Automaton has 5613 states and 8411 transitions. Word has length 525 [2023-12-16 04:08:36,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:36,254 INFO L495 AbstractCegarLoop]: Abstraction has 5613 states and 8411 transitions. [2023-12-16 04:08:36,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 04:08:36,254 INFO L276 IsEmpty]: Start isEmpty. Operand 5613 states and 8411 transitions. [2023-12-16 04:08:36,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-16 04:08:36,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:36,264 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:36,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-16 04:08:36,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-16 04:08:36,475 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:36,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:36,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1947115257, now seen corresponding path program 1 times [2023-12-16 04:08:36,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:36,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020494499] [2023-12-16 04:08:36,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:36,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:36,539 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:36,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1384433689] [2023-12-16 04:08:36,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:36,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:36,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:36,541 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:08:36,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-16 04:08:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:37,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 04:08:37,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:38,901 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 3048 proven. 201 refuted. 0 times theorem prover too weak. 9075 trivial. 0 not checked. [2023-12-16 04:08:38,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:08:39,886 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 33 proven. 201 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-12-16 04:08:39,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:39,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020494499] [2023-12-16 04:08:39,886 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:39,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384433689] [2023-12-16 04:08:39,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384433689] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:08:39,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:08:39,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-12-16 04:08:39,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229532173] [2023-12-16 04:08:39,887 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:08:39,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 04:08:39,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:39,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 04:08:39,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-16 04:08:39,889 INFO L87 Difference]: Start difference. First operand 5613 states and 8411 transitions. Second operand has 16 states, 16 states have (on average 16.5) internal successors, (264), 16 states have internal predecessors, (264), 4 states have call successors, (158), 3 states have call predecessors, (158), 5 states have return successors, (158), 4 states have call predecessors, (158), 4 states have call successors, (158) [2023-12-16 04:08:42,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:42,615 INFO L93 Difference]: Finished difference Result 24498 states and 36751 transitions. [2023-12-16 04:08:42,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-16 04:08:42,615 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 16.5) internal successors, (264), 16 states have internal predecessors, (264), 4 states have call successors, (158), 3 states have call predecessors, (158), 5 states have return successors, (158), 4 states have call predecessors, (158), 4 states have call successors, (158) Word has length 526 [2023-12-16 04:08:42,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:42,667 INFO L225 Difference]: With dead ends: 24498 [2023-12-16 04:08:42,667 INFO L226 Difference]: Without dead ends: 19120 [2023-12-16 04:08:42,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1070 GetRequests, 1037 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2023-12-16 04:08:42,687 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 1700 mSDsluCounter, 2384 mSDsCounter, 0 mSdLazyCounter, 2001 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1789 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 2276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 2001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:42,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1789 Valid, 2683 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 2001 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 04:08:42,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19120 states. [2023-12-16 04:08:43,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19120 to 14756. [2023-12-16 04:08:43,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14756 states, 12505 states have (on average 1.4431827269092363) internal successors, (18047), 12525 states have internal predecessors, (18047), 1995 states have call successors, (1995), 255 states have call predecessors, (1995), 255 states have return successors, (1995), 1975 states have call predecessors, (1995), 1995 states have call successors, (1995) [2023-12-16 04:08:43,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14756 states to 14756 states and 22037 transitions. [2023-12-16 04:08:43,831 INFO L78 Accepts]: Start accepts. Automaton has 14756 states and 22037 transitions. Word has length 526 [2023-12-16 04:08:43,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:43,832 INFO L495 AbstractCegarLoop]: Abstraction has 14756 states and 22037 transitions. [2023-12-16 04:08:43,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.5) internal successors, (264), 16 states have internal predecessors, (264), 4 states have call successors, (158), 3 states have call predecessors, (158), 5 states have return successors, (158), 4 states have call predecessors, (158), 4 states have call successors, (158) [2023-12-16 04:08:43,833 INFO L276 IsEmpty]: Start isEmpty. Operand 14756 states and 22037 transitions. [2023-12-16 04:08:43,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-16 04:08:43,846 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:43,846 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:43,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-16 04:08:44,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:44,058 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:44,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:44,058 INFO L85 PathProgramCache]: Analyzing trace with hash -2096097777, now seen corresponding path program 1 times [2023-12-16 04:08:44,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:44,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211466756] [2023-12-16 04:08:44,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:44,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:44,111 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:44,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [819072707] [2023-12-16 04:08:44,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:44,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:44,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:44,113 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:08:44,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-16 04:08:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:44,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 1346 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-16 04:08:44,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:48,950 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 8220 proven. 810 refuted. 0 times theorem prover too weak. 3294 trivial. 0 not checked. [2023-12-16 04:08:48,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:08:49,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:49,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211466756] [2023-12-16 04:08:49,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:49,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819072707] [2023-12-16 04:08:49,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819072707] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:08:49,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-16 04:08:49,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2023-12-16 04:08:49,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77274430] [2023-12-16 04:08:49,688 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-16 04:08:49,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-16 04:08:49,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:49,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-16 04:08:49,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2023-12-16 04:08:49,692 INFO L87 Difference]: Start difference. First operand 14756 states and 22037 transitions. Second operand has 23 states, 23 states have (on average 7.0) internal successors, (161), 19 states have internal predecessors, (161), 7 states have call successors, (79), 7 states have call predecessors, (79), 10 states have return successors, (79), 7 states have call predecessors, (79), 7 states have call successors, (79) [2023-12-16 04:08:54,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:54,769 INFO L93 Difference]: Finished difference Result 56113 states and 82925 transitions. [2023-12-16 04:08:54,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-16 04:08:54,770 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.0) internal successors, (161), 19 states have internal predecessors, (161), 7 states have call successors, (79), 7 states have call predecessors, (79), 10 states have return successors, (79), 7 states have call predecessors, (79), 7 states have call successors, (79) Word has length 526 [2023-12-16 04:08:54,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:54,947 INFO L225 Difference]: With dead ends: 56113 [2023-12-16 04:08:54,948 INFO L226 Difference]: Without dead ends: 41643 [2023-12-16 04:08:54,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 760 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=880, Invalid=2780, Unknown=0, NotChecked=0, Total=3660 [2023-12-16 04:08:54,985 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 1313 mSDsluCounter, 3259 mSDsCounter, 0 mSdLazyCounter, 2846 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1333 SdHoareTripleChecker+Valid, 3718 SdHoareTripleChecker+Invalid, 3089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 2846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:54,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1333 Valid, 3718 Invalid, 3089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 2846 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-16 04:08:55,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41643 states. [2023-12-16 04:08:56,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41643 to 26443. [2023-12-16 04:08:56,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26443 states, 22692 states have (on average 1.4342499559316058) internal successors, (32546), 22712 states have internal predecessors, (32546), 3259 states have call successors, (3259), 491 states have call predecessors, (3259), 491 states have return successors, (3259), 3239 states have call predecessors, (3259), 3259 states have call successors, (3259) [2023-12-16 04:08:56,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26443 states to 26443 states and 39064 transitions. [2023-12-16 04:08:56,951 INFO L78 Accepts]: Start accepts. Automaton has 26443 states and 39064 transitions. Word has length 526 [2023-12-16 04:08:56,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:56,952 INFO L495 AbstractCegarLoop]: Abstraction has 26443 states and 39064 transitions. [2023-12-16 04:08:56,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.0) internal successors, (161), 19 states have internal predecessors, (161), 7 states have call successors, (79), 7 states have call predecessors, (79), 10 states have return successors, (79), 7 states have call predecessors, (79), 7 states have call successors, (79) [2023-12-16 04:08:56,952 INFO L276 IsEmpty]: Start isEmpty. Operand 26443 states and 39064 transitions. [2023-12-16 04:08:56,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-16 04:08:56,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:56,979 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:56,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-16 04:08:57,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-16 04:08:57,193 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:57,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:57,194 INFO L85 PathProgramCache]: Analyzing trace with hash 170283409, now seen corresponding path program 1 times [2023-12-16 04:08:57,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:57,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229757716] [2023-12-16 04:08:57,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:57,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:57,265 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:57,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1623376712] [2023-12-16 04:08:57,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:57,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:57,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:57,267 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:08:57,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-16 04:08:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:58,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 1346 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 04:08:58,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:59,032 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 6596 proven. 192 refuted. 0 times theorem prover too weak. 5536 trivial. 0 not checked. [2023-12-16 04:08:59,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 04:09:00,073 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:09:00,073 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:09:00,149 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 357 proven. 108 refuted. 0 times theorem prover too weak. 11859 trivial. 0 not checked. [2023-12-16 04:09:00,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:09:00,151 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 04:09:00,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-16 04:09:00,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-16 04:09:00,352 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 527 with TraceHistMax 79,while AutomatonFreeRefinementEngine was Timeout during proof generation before using IpTcStrategyModuleSmtInterpolCraig [1229757716]. [2023-12-16 04:09:00,356 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:09:00,358 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 04:09:00,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:09:00 BoogieIcfgContainer [2023-12-16 04:09:00,360 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 04:09:00,360 INFO L158 Benchmark]: Toolchain (without parser) took 55434.30ms. Allocated memory was 187.7MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 140.6MB in the beginning and 1.0GB in the end (delta: -865.0MB). Peak memory consumption was 263.5MB. Max. memory is 8.0GB. [2023-12-16 04:09:00,360 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 187.7MB. Free memory is still 143.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:09:00,361 INFO L158 Benchmark]: CACSL2BoogieTranslator took 656.79ms. Allocated memory is still 187.7MB. Free memory was 140.1MB in the beginning and 103.0MB in the end (delta: 37.2MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2023-12-16 04:09:00,361 INFO L158 Benchmark]: Boogie Procedure Inliner took 209.82ms. Allocated memory is still 187.7MB. Free memory was 103.0MB in the beginning and 86.7MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-16 04:09:00,361 INFO L158 Benchmark]: Boogie Preprocessor took 286.55ms. Allocated memory is still 187.7MB. Free memory was 86.7MB in the beginning and 114.0MB in the end (delta: -27.4MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB. [2023-12-16 04:09:00,362 INFO L158 Benchmark]: RCFGBuilder took 1246.53ms. Allocated memory was 187.7MB in the beginning and 264.2MB in the end (delta: 76.5MB). Free memory was 114.0MB in the beginning and 192.3MB in the end (delta: -78.3MB). Peak memory consumption was 72.2MB. Max. memory is 8.0GB. [2023-12-16 04:09:00,362 INFO L158 Benchmark]: TraceAbstraction took 53025.99ms. Allocated memory was 264.2MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 191.3MB in the beginning and 1.0GB in the end (delta: -814.4MB). Peak memory consumption was 236.0MB. Max. memory is 8.0GB. [2023-12-16 04:09:00,365 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 187.7MB. Free memory is still 143.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 656.79ms. Allocated memory is still 187.7MB. Free memory was 140.1MB in the beginning and 103.0MB in the end (delta: 37.2MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 209.82ms. Allocated memory is still 187.7MB. Free memory was 103.0MB in the beginning and 86.7MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 286.55ms. Allocated memory is still 187.7MB. Free memory was 86.7MB in the beginning and 114.0MB in the end (delta: -27.4MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB. * RCFGBuilder took 1246.53ms. Allocated memory was 187.7MB in the beginning and 264.2MB in the end (delta: 76.5MB). Free memory was 114.0MB in the beginning and 192.3MB in the end (delta: -78.3MB). Peak memory consumption was 72.2MB. Max. memory is 8.0GB. * TraceAbstraction took 53025.99ms. Allocated memory was 264.2MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 191.3MB in the beginning and 1.0GB in the end (delta: -814.4MB). Peak memory consumption was 236.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 527 with TraceHistMax 79,while AutomatonFreeRefinementEngine was Timeout during proof generation before using IpTcStrategyModuleSmtInterpolCraig [1229757716]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 251 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 53.0s, OverallIterations: 16, TraceHistogramMax: 79, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 16.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11810 SdHoareTripleChecker+Valid, 9.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11631 mSDsluCounter, 21457 SdHoareTripleChecker+Invalid, 7.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14402 mSDsCounter, 2419 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9167 IncrementalHoareTripleChecker+Invalid, 11586 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2419 mSolverCounterUnsat, 7055 mSDtfsCounter, 9167 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10286 GetRequests, 10109 SyntacticMatches, 1 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1322 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26443occurred in iteration=15, InterpolantAutomatonStates: 163, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 24237 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.4s SsaConstructionTime, 3.7s SatisfiabilityAnalysisTime, 15.7s InterpolantComputationTime, 8382 NumberOfCodeBlocks, 8382 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 9938 ConstructedInterpolants, 0 QuantifiedInterpolants, 38790 SizeOfPredicates, 48 NumberOfNonLiveVariables, 20159 ConjunctsInSsa, 127 ConjunctsInUnsatCore, 19 InterpolantComputations, 10 PerfectInterpolantSequences, 232059/234156 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown