/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-61.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 02:51:49,092 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 02:51:49,159 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 02:51:49,163 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 02:51:49,163 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 02:51:49,184 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 02:51:49,184 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 02:51:49,184 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 02:51:49,185 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 02:51:49,188 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 02:51:49,188 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 02:51:49,188 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 02:51:49,189 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 02:51:49,190 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 02:51:49,190 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 02:51:49,190 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 02:51:49,190 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 02:51:49,190 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 02:51:49,190 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 02:51:49,191 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 02:51:49,191 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 02:51:49,191 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 02:51:49,191 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 02:51:49,191 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 02:51:49,191 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 02:51:49,191 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 02:51:49,192 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 02:51:49,192 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 02:51:49,192 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 02:51:49,192 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 02:51:49,193 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 02:51:49,193 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 02:51:49,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:51:49,193 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 02:51:49,193 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 02:51:49,194 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 02:51:49,194 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 02:51:49,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 02:51:49,194 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 02:51:49,194 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 02:51:49,194 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 02:51:49,194 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 02:51:49,194 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 02:51:49,194 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 02:51:49,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 02:51:49,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 02:51:49,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 02:51:49,430 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 02:51:49,430 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 02:51:49,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-61.i [2023-12-16 02:51:50,666 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 02:51:50,841 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 02:51:50,841 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-61.i [2023-12-16 02:51:50,861 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b58615d9b/ef65a177a78f4738a2f7f14014a655ab/FLAG275bba7cd [2023-12-16 02:51:50,873 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b58615d9b/ef65a177a78f4738a2f7f14014a655ab [2023-12-16 02:51:50,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 02:51:50,876 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 02:51:50,877 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 02:51:50,877 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 02:51:50,880 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 02:51:50,881 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:51:50" (1/1) ... [2023-12-16 02:51:50,881 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79610abe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:50, skipping insertion in model container [2023-12-16 02:51:50,881 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:51:50" (1/1) ... [2023-12-16 02:51:50,929 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 02:51:51,048 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-61.i[916,929] [2023-12-16 02:51:51,131 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:51:51,146 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 02:51:51,155 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-61.i[916,929] [2023-12-16 02:51:51,228 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:51:51,317 INFO L206 MainTranslator]: Completed translation [2023-12-16 02:51:51,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:51 WrapperNode [2023-12-16 02:51:51,317 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 02:51:51,318 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 02:51:51,318 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 02:51:51,318 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 02:51:51,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:51" (1/1) ... [2023-12-16 02:51:51,382 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:51" (1/1) ... [2023-12-16 02:51:51,444 INFO L138 Inliner]: procedures = 26, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 466 [2023-12-16 02:51:51,444 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 02:51:51,445 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 02:51:51,445 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 02:51:51,445 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 02:51:51,464 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:51" (1/1) ... [2023-12-16 02:51:51,464 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:51" (1/1) ... [2023-12-16 02:51:51,467 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:51" (1/1) ... [2023-12-16 02:51:51,496 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 02:51:51,496 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:51" (1/1) ... [2023-12-16 02:51:51,497 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:51" (1/1) ... [2023-12-16 02:51:51,507 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:51" (1/1) ... [2023-12-16 02:51:51,512 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:51" (1/1) ... [2023-12-16 02:51:51,514 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:51" (1/1) ... [2023-12-16 02:51:51,516 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:51" (1/1) ... [2023-12-16 02:51:51,519 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 02:51:51,520 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 02:51:51,520 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 02:51:51,520 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 02:51:51,520 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:51" (1/1) ... [2023-12-16 02:51:51,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:51:51,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:51:51,549 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 02:51:51,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 02:51:51,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 02:51:51,574 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 02:51:51,586 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 02:51:51,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 02:51:51,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 02:51:51,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 02:51:51,813 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 02:51:51,816 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 02:51:52,407 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 02:51:52,448 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 02:51:52,448 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 02:51:52,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:51:52 BoogieIcfgContainer [2023-12-16 02:51:52,448 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 02:51:52,450 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 02:51:52,450 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 02:51:52,453 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 02:51:52,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:51:50" (1/3) ... [2023-12-16 02:51:52,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18adf965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:51:52, skipping insertion in model container [2023-12-16 02:51:52,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:51" (2/3) ... [2023-12-16 02:51:52,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18adf965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:51:52, skipping insertion in model container [2023-12-16 02:51:52,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:51:52" (3/3) ... [2023-12-16 02:51:52,456 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-61.i [2023-12-16 02:51:52,467 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 02:51:52,468 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 02:51:52,512 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 02:51:52,517 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;@2726c521, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 02:51:52,517 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 02:51:52,524 INFO L276 IsEmpty]: Start isEmpty. Operand has 188 states, 114 states have (on average 1.5614035087719298) internal successors, (178), 115 states have internal predecessors, (178), 71 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2023-12-16 02:51:52,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-12-16 02:51:52,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:51:52,547 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:51:52,548 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:51:52,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:51:52,554 INFO L85 PathProgramCache]: Analyzing trace with hash -758438767, now seen corresponding path program 1 times [2023-12-16 02:51:52,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:51:52,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438272346] [2023-12-16 02:51:52,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:51:52,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:51:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:51:52,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:51:52,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438272346] [2023-12-16 02:51:52,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 02:51:52,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685213379] [2023-12-16 02:51:52,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:51:52,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:51:52,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:51:52,793 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:51:52,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 02:51:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:51:53,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 02:51:53,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:51:53,196 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 9800 trivial. 0 not checked. [2023-12-16 02:51:53,197 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:51:53,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685213379] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:51:53,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:51:53,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:51:53,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373513803] [2023-12-16 02:51:53,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:51:53,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 02:51:53,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:51:53,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 02:51:53,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:51:53,227 INFO L87 Difference]: Start difference. First operand has 188 states, 114 states have (on average 1.5614035087719298) internal successors, (178), 115 states have internal predecessors, (178), 71 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) Second operand has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 2 states have call successors, (71) [2023-12-16 02:51:53,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:51:53,271 INFO L93 Difference]: Finished difference Result 373 states and 709 transitions. [2023-12-16 02:51:53,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 02:51:53,273 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 2 states have call successors, (71) Word has length 442 [2023-12-16 02:51:53,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:51:53,279 INFO L225 Difference]: With dead ends: 373 [2023-12-16 02:51:53,279 INFO L226 Difference]: Without dead ends: 186 [2023-12-16 02:51:53,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:51:53,285 INFO L413 NwaCegarLoop]: 312 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, 312 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:51:53,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 312 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:51:53,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-12-16 02:51:53,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2023-12-16 02:51:53,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 113 states have (on average 1.5309734513274336) internal successors, (173), 113 states have internal predecessors, (173), 71 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2023-12-16 02:51:53,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 315 transitions. [2023-12-16 02:51:53,325 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 315 transitions. Word has length 442 [2023-12-16 02:51:53,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:51:53,325 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 315 transitions. [2023-12-16 02:51:53,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 2 states have call successors, (71) [2023-12-16 02:51:53,326 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 315 transitions. [2023-12-16 02:51:53,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-12-16 02:51:53,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:51:53,332 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:51:53,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 02:51:53,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-16 02:51:53,539 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:51:53,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:51:53,540 INFO L85 PathProgramCache]: Analyzing trace with hash -439506717, now seen corresponding path program 1 times [2023-12-16 02:51:53,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:51:53,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423838373] [2023-12-16 02:51:53,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:51:53,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:51:53,630 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:51:53,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692971896] [2023-12-16 02:51:53,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:51:53,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:51:53,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:51:53,632 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:51:53,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 02:51:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:51:53,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:51:53,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:51:53,906 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2023-12-16 02:51:53,906 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:51:53,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:51:53,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423838373] [2023-12-16 02:51:53,907 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:51:53,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692971896] [2023-12-16 02:51:53,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692971896] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:51:53,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:51:53,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:51:53,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884580881] [2023-12-16 02:51:53,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:51:53,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:51:53,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:51:53,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:51:53,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:51:53,910 INFO L87 Difference]: Start difference. First operand 186 states and 315 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-16 02:51:53,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:51:53,938 INFO L93 Difference]: Finished difference Result 371 states and 629 transitions. [2023-12-16 02:51:53,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:51:53,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 442 [2023-12-16 02:51:53,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:51:53,941 INFO L225 Difference]: With dead ends: 371 [2023-12-16 02:51:53,941 INFO L226 Difference]: Without dead ends: 186 [2023-12-16 02:51:53,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:51:53,943 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 25 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:51:53,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 594 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:51:53,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-12-16 02:51:53,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2023-12-16 02:51:53,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 113 states have (on average 1.5221238938053097) internal successors, (172), 113 states have internal predecessors, (172), 71 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2023-12-16 02:51:53,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 314 transitions. [2023-12-16 02:51:53,957 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 314 transitions. Word has length 442 [2023-12-16 02:51:53,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:51:53,959 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 314 transitions. [2023-12-16 02:51:53,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-16 02:51:53,959 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 314 transitions. [2023-12-16 02:51:53,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-12-16 02:51:53,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:51:53,981 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:51:53,998 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 02:51:54,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-16 02:51:54,188 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:51:54,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:51:54,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1450623967, now seen corresponding path program 1 times [2023-12-16 02:51:54,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:51:54,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844390324] [2023-12-16 02:51:54,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:51:54,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:51:54,276 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:51:54,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1102218393] [2023-12-16 02:51:54,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:51:54,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:51:54,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:51:54,280 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:51:54,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 02:51:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:51:54,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 1008 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:51:54,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:51:54,576 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2023-12-16 02:51:54,576 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:51:54,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:51:54,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844390324] [2023-12-16 02:51:54,577 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:51:54,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102218393] [2023-12-16 02:51:54,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102218393] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:51:54,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:51:54,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:51:54,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382045210] [2023-12-16 02:51:54,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:51:54,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:51:54,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:51:54,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:51:54,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:51:54,581 INFO L87 Difference]: Start difference. First operand 186 states and 314 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-16 02:51:54,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:51:54,664 INFO L93 Difference]: Finished difference Result 489 states and 827 transitions. [2023-12-16 02:51:54,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:51:54,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 442 [2023-12-16 02:51:54,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:51:54,667 INFO L225 Difference]: With dead ends: 489 [2023-12-16 02:51:54,667 INFO L226 Difference]: Without dead ends: 304 [2023-12-16 02:51:54,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:51:54,669 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 176 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 02:51:54,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 587 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 02:51:54,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-12-16 02:51:54,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2023-12-16 02:51:54,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 191 states have (on average 1.5235602094240839) internal successors, (291), 192 states have internal predecessors, (291), 107 states have call successors, (107), 2 states have call predecessors, (107), 2 states have return successors, (107), 106 states have call predecessors, (107), 107 states have call successors, (107) [2023-12-16 02:51:54,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 505 transitions. [2023-12-16 02:51:54,707 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 505 transitions. Word has length 442 [2023-12-16 02:51:54,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:51:54,708 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 505 transitions. [2023-12-16 02:51:54,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-16 02:51:54,709 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 505 transitions. [2023-12-16 02:51:54,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2023-12-16 02:51:54,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:51:54,711 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:51:54,736 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 02:51:54,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:51:54,923 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:51:54,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:51:54,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1870456636, now seen corresponding path program 1 times [2023-12-16 02:51:54,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:51:54,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498500508] [2023-12-16 02:51:54,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:51:54,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:51:54,983 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:51:54,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [90052448] [2023-12-16 02:51:54,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:51:54,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:51:54,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:51:54,988 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:51:55,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 02:51:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:51:55,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 02:51:55,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:51:55,349 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2023-12-16 02:51:55,349 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:51:55,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:51:55,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498500508] [2023-12-16 02:51:55,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:51:55,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90052448] [2023-12-16 02:51:55,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90052448] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:51:55,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:51:55,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:51:55,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138390701] [2023-12-16 02:51:55,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:51:55,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:51:55,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:51:55,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:51:55,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:51:55,351 INFO L87 Difference]: Start difference. First operand 301 states and 505 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-16 02:51:55,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:51:55,452 INFO L93 Difference]: Finished difference Result 608 states and 1013 transitions. [2023-12-16 02:51:55,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:51:55,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 443 [2023-12-16 02:51:55,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:51:55,456 INFO L225 Difference]: With dead ends: 608 [2023-12-16 02:51:55,456 INFO L226 Difference]: Without dead ends: 308 [2023-12-16 02:51:55,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:51:55,457 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 179 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 02:51:55,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 432 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 02:51:55,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-12-16 02:51:55,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2023-12-16 02:51:55,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 196 states have (on average 1.5) internal successors, (294), 197 states have internal predecessors, (294), 107 states have call successors, (107), 4 states have call predecessors, (107), 4 states have return successors, (107), 106 states have call predecessors, (107), 107 states have call successors, (107) [2023-12-16 02:51:55,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 508 transitions. [2023-12-16 02:51:55,590 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 508 transitions. Word has length 443 [2023-12-16 02:51:55,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:51:55,591 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 508 transitions. [2023-12-16 02:51:55,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-16 02:51:55,591 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 508 transitions. [2023-12-16 02:51:55,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2023-12-16 02:51:55,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:51:55,594 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:51:55,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 02:51:55,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:51:55,809 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:51:55,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:51:55,809 INFO L85 PathProgramCache]: Analyzing trace with hash 178870724, now seen corresponding path program 1 times [2023-12-16 02:51:55,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:51:55,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781805275] [2023-12-16 02:51:55,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:51:55,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:51:55,856 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:51:55,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1125581724] [2023-12-16 02:51:55,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:51:55,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:51:55,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:51:55,857 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:51:55,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 02:51:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:51:56,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 1006 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 02:51:56,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:51:56,550 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2023-12-16 02:51:56,550 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:51:56,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:51:56,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781805275] [2023-12-16 02:51:56,550 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:51:56,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125581724] [2023-12-16 02:51:56,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125581724] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:51:56,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:51:56,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:51:56,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500068014] [2023-12-16 02:51:56,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:51:56,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:51:56,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:51:56,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:51:56,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:51:56,552 INFO L87 Difference]: Start difference. First operand 308 states and 508 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-16 02:51:56,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:51:56,589 INFO L93 Difference]: Finished difference Result 922 states and 1522 transitions. [2023-12-16 02:51:56,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:51:56,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 443 [2023-12-16 02:51:56,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:51:56,593 INFO L225 Difference]: With dead ends: 922 [2023-12-16 02:51:56,593 INFO L226 Difference]: Without dead ends: 615 [2023-12-16 02:51:56,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:51:56,594 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 106 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:51:56,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 614 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:51:56,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2023-12-16 02:51:56,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 613. [2023-12-16 02:51:56,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 390 states have (on average 1.4923076923076923) internal successors, (582), 392 states have internal predecessors, (582), 214 states have call successors, (214), 8 states have call predecessors, (214), 8 states have return successors, (214), 212 states have call predecessors, (214), 214 states have call successors, (214) [2023-12-16 02:51:56,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 1010 transitions. [2023-12-16 02:51:56,625 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 1010 transitions. Word has length 443 [2023-12-16 02:51:56,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:51:56,625 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 1010 transitions. [2023-12-16 02:51:56,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-16 02:51:56,626 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 1010 transitions. [2023-12-16 02:51:56,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2023-12-16 02:51:56,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:51:56,628 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:51:56,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 02:51:56,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:51:56,867 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:51:56,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:51:56,868 INFO L85 PathProgramCache]: Analyzing trace with hash 880470598, now seen corresponding path program 1 times [2023-12-16 02:51:56,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:51:56,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917823163] [2023-12-16 02:51:56,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:51:56,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:51:56,896 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:51:56,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950779612] [2023-12-16 02:51:56,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:51:56,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:51:56,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:51:56,914 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:51:56,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 02:51:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:51:57,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 1003 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 02:51:57,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:51:57,238 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2023-12-16 02:51:57,238 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:51:57,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:51:57,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917823163] [2023-12-16 02:51:57,239 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:51:57,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950779612] [2023-12-16 02:51:57,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950779612] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:51:57,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:51:57,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 02:51:57,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608916894] [2023-12-16 02:51:57,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:51:57,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 02:51:57,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:51:57,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 02:51:57,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:51:57,240 INFO L87 Difference]: Start difference. First operand 613 states and 1010 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-16 02:51:58,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:51:58,116 INFO L93 Difference]: Finished difference Result 1914 states and 3135 transitions. [2023-12-16 02:51:58,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 02:51:58,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 443 [2023-12-16 02:51:58,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:51:58,122 INFO L225 Difference]: With dead ends: 1914 [2023-12-16 02:51:58,122 INFO L226 Difference]: Without dead ends: 1302 [2023-12-16 02:51:58,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 02:51:58,126 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 746 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 02:51:58,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 1331 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 02:51:58,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2023-12-16 02:51:58,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1100. [2023-12-16 02:51:58,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 721 states have (on average 1.5034674063800277) internal successors, (1084), 727 states have internal predecessors, (1084), 362 states have call successors, (362), 16 states have call predecessors, (362), 16 states have return successors, (362), 356 states have call predecessors, (362), 362 states have call successors, (362) [2023-12-16 02:51:58,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1808 transitions. [2023-12-16 02:51:58,191 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1808 transitions. Word has length 443 [2023-12-16 02:51:58,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:51:58,191 INFO L495 AbstractCegarLoop]: Abstraction has 1100 states and 1808 transitions. [2023-12-16 02:51:58,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-16 02:51:58,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1808 transitions. [2023-12-16 02:51:58,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2023-12-16 02:51:58,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:51:58,194 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:51:58,200 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 02:51:58,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:51:58,400 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:51:58,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:51:58,401 INFO L85 PathProgramCache]: Analyzing trace with hash -2027175030, now seen corresponding path program 1 times [2023-12-16 02:51:58,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:51:58,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508318145] [2023-12-16 02:51:58,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:51:58,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:51:58,435 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:51:58,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266599623] [2023-12-16 02:51:58,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:51:58,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:51:58,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:51:58,443 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:51:58,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 02:51:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:51:58,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 1006 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 02:51:58,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:51:59,159 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2023-12-16 02:51:59,160 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:51:59,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:51:59,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508318145] [2023-12-16 02:51:59,160 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:51:59,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266599623] [2023-12-16 02:51:59,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266599623] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:51:59,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:51:59,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:51:59,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821481343] [2023-12-16 02:51:59,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:51:59,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:51:59,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:51:59,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:51:59,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:51:59,162 INFO L87 Difference]: Start difference. First operand 1100 states and 1808 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-16 02:51:59,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:51:59,522 INFO L93 Difference]: Finished difference Result 2205 states and 3619 transitions. [2023-12-16 02:51:59,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:51:59,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 444 [2023-12-16 02:51:59,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:51:59,528 INFO L225 Difference]: With dead ends: 2205 [2023-12-16 02:51:59,528 INFO L226 Difference]: Without dead ends: 1106 [2023-12-16 02:51:59,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 441 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 02:51:59,531 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 371 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:51:59,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 741 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 02:51:59,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2023-12-16 02:51:59,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1099. [2023-12-16 02:51:59,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 720 states have (on average 1.5) internal successors, (1080), 726 states have internal predecessors, (1080), 362 states have call successors, (362), 16 states have call predecessors, (362), 16 states have return successors, (362), 356 states have call predecessors, (362), 362 states have call successors, (362) [2023-12-16 02:51:59,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1804 transitions. [2023-12-16 02:51:59,662 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1804 transitions. Word has length 444 [2023-12-16 02:51:59,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:51:59,662 INFO L495 AbstractCegarLoop]: Abstraction has 1099 states and 1804 transitions. [2023-12-16 02:51:59,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-16 02:51:59,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1804 transitions. [2023-12-16 02:51:59,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2023-12-16 02:51:59,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:51:59,665 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:51:59,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 02:51:59,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:51:59,892 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:51:59,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:51:59,893 INFO L85 PathProgramCache]: Analyzing trace with hash -503352349, now seen corresponding path program 1 times [2023-12-16 02:51:59,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:51:59,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725593582] [2023-12-16 02:51:59,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:51:59,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:51:59,922 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:51:59,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1048907661] [2023-12-16 02:51:59,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:51:59,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:51:59,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:51:59,925 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:51:59,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 02:52:00,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:52:00,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 1006 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 02:52:00,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:52:01,512 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 6200 proven. 240 refuted. 0 times theorem prover too weak. 3500 trivial. 0 not checked. [2023-12-16 02:52:01,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:52:02,794 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 174 proven. 243 refuted. 0 times theorem prover too weak. 9523 trivial. 0 not checked. [2023-12-16 02:52:02,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:52:02,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725593582] [2023-12-16 02:52:02,794 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:52:02,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048907661] [2023-12-16 02:52:02,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048907661] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:52:02,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:52:02,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-12-16 02:52:02,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114331187] [2023-12-16 02:52:02,795 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:52:02,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 02:52:02,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:52:02,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 02:52:02,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2023-12-16 02:52:02,797 INFO L87 Difference]: Start difference. First operand 1099 states and 1804 transitions. Second operand has 18 states, 17 states have (on average 10.294117647058824) internal successors, (175), 18 states have internal predecessors, (175), 7 states have call successors, (120), 4 states have call predecessors, (120), 8 states have return successors, (120), 7 states have call predecessors, (120), 7 states have call successors, (120) [2023-12-16 02:52:04,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:52:04,228 INFO L93 Difference]: Finished difference Result 3717 states and 5875 transitions. [2023-12-16 02:52:04,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-16 02:52:04,229 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 10.294117647058824) internal successors, (175), 18 states have internal predecessors, (175), 7 states have call successors, (120), 4 states have call predecessors, (120), 8 states have return successors, (120), 7 states have call predecessors, (120), 7 states have call successors, (120) Word has length 444 [2023-12-16 02:52:04,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:52:04,238 INFO L225 Difference]: With dead ends: 3717 [2023-12-16 02:52:04,238 INFO L226 Difference]: Without dead ends: 2619 [2023-12-16 02:52:04,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 907 GetRequests, 873 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=447, Invalid=813, Unknown=0, NotChecked=0, Total=1260 [2023-12-16 02:52:04,242 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 991 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:52:04,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 1020 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 02:52:04,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2023-12-16 02:52:04,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 1379. [2023-12-16 02:52:04,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 1048 states have (on average 1.5935114503816794) internal successors, (1670), 1054 states have internal predecessors, (1670), 306 states have call successors, (306), 24 states have call predecessors, (306), 24 states have return successors, (306), 300 states have call predecessors, (306), 306 states have call successors, (306) [2023-12-16 02:52:04,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 2282 transitions. [2023-12-16 02:52:04,329 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 2282 transitions. Word has length 444 [2023-12-16 02:52:04,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:52:04,329 INFO L495 AbstractCegarLoop]: Abstraction has 1379 states and 2282 transitions. [2023-12-16 02:52:04,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 10.294117647058824) internal successors, (175), 18 states have internal predecessors, (175), 7 states have call successors, (120), 4 states have call predecessors, (120), 8 states have return successors, (120), 7 states have call predecessors, (120), 7 states have call successors, (120) [2023-12-16 02:52:04,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 2282 transitions. [2023-12-16 02:52:04,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2023-12-16 02:52:04,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:52:04,332 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:52:04,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-16 02:52:04,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-16 02:52:04,539 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:52:04,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:52:04,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1524420703, now seen corresponding path program 1 times [2023-12-16 02:52:04,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:52:04,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697467765] [2023-12-16 02:52:04,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:52:04,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:52:04,566 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:52:04,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [247661123] [2023-12-16 02:52:04,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:52:04,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:52:04,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:52:04,568 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:52:04,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 02:52:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:52:04,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 02:52:04,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:52:05,915 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 6206 proven. 105 refuted. 0 times theorem prover too weak. 3629 trivial. 0 not checked. [2023-12-16 02:52:05,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:52:06,541 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 105 proven. 105 refuted. 0 times theorem prover too weak. 9730 trivial. 0 not checked. [2023-12-16 02:52:06,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:52:06,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697467765] [2023-12-16 02:52:06,542 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:52:06,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247661123] [2023-12-16 02:52:06,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247661123] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:52:06,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:52:06,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-16 02:52:06,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986271272] [2023-12-16 02:52:06,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:52:06,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 02:52:06,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:52:06,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 02:52:06,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2023-12-16 02:52:06,544 INFO L87 Difference]: Start difference. First operand 1379 states and 2282 transitions. Second operand has 12 states, 12 states have (on average 13.833333333333334) internal successors, (166), 12 states have internal predecessors, (166), 5 states have call successors, (120), 3 states have call predecessors, (120), 5 states have return successors, (120), 5 states have call predecessors, (120), 5 states have call successors, (120) [2023-12-16 02:52:07,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:52:07,492 INFO L93 Difference]: Finished difference Result 3363 states and 5476 transitions. [2023-12-16 02:52:07,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 02:52:07,492 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.833333333333334) internal successors, (166), 12 states have internal predecessors, (166), 5 states have call successors, (120), 3 states have call predecessors, (120), 5 states have return successors, (120), 5 states have call predecessors, (120), 5 states have call successors, (120) Word has length 444 [2023-12-16 02:52:07,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:52:07,498 INFO L225 Difference]: With dead ends: 3363 [2023-12-16 02:52:07,498 INFO L226 Difference]: Without dead ends: 1657 [2023-12-16 02:52:07,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 877 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=271, Unknown=0, NotChecked=0, Total=420 [2023-12-16 02:52:07,503 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 1115 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:52:07,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 817 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 02:52:07,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2023-12-16 02:52:07,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1083. [2023-12-16 02:52:07,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 840 states have (on average 1.588095238095238) internal successors, (1334), 842 states have internal predecessors, (1334), 218 states have call successors, (218), 24 states have call predecessors, (218), 24 states have return successors, (218), 216 states have call predecessors, (218), 218 states have call successors, (218) [2023-12-16 02:52:07,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 1770 transitions. [2023-12-16 02:52:07,644 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 1770 transitions. Word has length 444 [2023-12-16 02:52:07,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:52:07,645 INFO L495 AbstractCegarLoop]: Abstraction has 1083 states and 1770 transitions. [2023-12-16 02:52:07,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.833333333333334) internal successors, (166), 12 states have internal predecessors, (166), 5 states have call successors, (120), 3 states have call predecessors, (120), 5 states have return successors, (120), 5 states have call predecessors, (120), 5 states have call successors, (120) [2023-12-16 02:52:07,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 1770 transitions. [2023-12-16 02:52:07,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2023-12-16 02:52:07,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:52:07,672 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:52:07,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 02:52:07,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:52:07,882 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:52:07,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:52:07,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1435809697, now seen corresponding path program 1 times [2023-12-16 02:52:07,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:52:07,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993729722] [2023-12-16 02:52:07,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:52:07,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:52:07,918 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:52:07,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [174802446] [2023-12-16 02:52:07,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:52:07,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:52:07,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:52:07,931 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:52:07,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 02:52:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:52:08,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 02:52:08,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:52:08,269 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2023-12-16 02:52:08,269 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:52:08,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:52:08,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993729722] [2023-12-16 02:52:08,270 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:52:08,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174802446] [2023-12-16 02:52:08,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174802446] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:52:08,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:52:08,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 02:52:08,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532560846] [2023-12-16 02:52:08,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:52:08,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:52:08,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:52:08,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:52:08,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:52:08,271 INFO L87 Difference]: Start difference. First operand 1083 states and 1770 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-16 02:52:08,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:52:08,630 INFO L93 Difference]: Finished difference Result 3243 states and 5300 transitions. [2023-12-16 02:52:08,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:52:08,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 444 [2023-12-16 02:52:08,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:52:08,637 INFO L225 Difference]: With dead ends: 3243 [2023-12-16 02:52:08,638 INFO L226 Difference]: Without dead ends: 2161 [2023-12-16 02:52:08,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 441 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 02:52:08,640 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 322 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 02:52:08,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 1018 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 02:52:08,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2023-12-16 02:52:08,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 1091. [2023-12-16 02:52:08,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 848 states have (on average 1.5825471698113207) internal successors, (1342), 850 states have internal predecessors, (1342), 218 states have call successors, (218), 24 states have call predecessors, (218), 24 states have return successors, (218), 216 states have call predecessors, (218), 218 states have call successors, (218) [2023-12-16 02:52:08,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1778 transitions. [2023-12-16 02:52:08,832 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1778 transitions. Word has length 444 [2023-12-16 02:52:08,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:52:08,832 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1778 transitions. [2023-12-16 02:52:08,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-16 02:52:08,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1778 transitions. [2023-12-16 02:52:08,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2023-12-16 02:52:08,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:52:08,835 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:52:08,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 02:52:09,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-16 02:52:09,056 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:52:09,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:52:09,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1042782687, now seen corresponding path program 1 times [2023-12-16 02:52:09,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:52:09,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36469718] [2023-12-16 02:52:09,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:52:09,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:52:09,121 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:52:09,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158021996] [2023-12-16 02:52:09,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:52:09,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:52:09,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:52:09,124 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:52:09,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 02:52:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:52:11,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-16 02:52:11,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:52:16,992 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 7119 proven. 555 refuted. 0 times theorem prover too weak. 2266 trivial. 0 not checked. [2023-12-16 02:52:16,992 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:52:35,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:52:35,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36469718] [2023-12-16 02:52:35,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:52:35,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158021996] [2023-12-16 02:52:35,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158021996] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:52:35,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:52:35,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2023-12-16 02:52:35,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048981240] [2023-12-16 02:52:35,197 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-16 02:52:35,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-16 02:52:35,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:52:35,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-16 02:52:35,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=692, Invalid=2614, Unknown=0, NotChecked=0, Total=3306 [2023-12-16 02:52:35,199 INFO L87 Difference]: Start difference. First operand 1091 states and 1778 transitions. Second operand has 37 states, 37 states have (on average 3.7837837837837838) internal successors, (140), 36 states have internal predecessors, (140), 10 states have call successors, (71), 10 states have call predecessors, (71), 17 states have return successors, (71), 10 states have call predecessors, (71), 10 states have call successors, (71) [2023-12-16 02:52:56,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:52:56,581 INFO L93 Difference]: Finished difference Result 5801 states and 8789 transitions. [2023-12-16 02:52:56,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-12-16 02:52:56,582 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.7837837837837838) internal successors, (140), 36 states have internal predecessors, (140), 10 states have call successors, (71), 10 states have call predecessors, (71), 17 states have return successors, (71), 10 states have call predecessors, (71), 10 states have call successors, (71) Word has length 444 [2023-12-16 02:52:56,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:52:56,596 INFO L225 Difference]: With dead ends: 5801 [2023-12-16 02:52:56,620 INFO L226 Difference]: Without dead ends: 4711 [2023-12-16 02:52:56,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4322 ImplicationChecksByTransitivity, 23.0s TimeCoverageRelationStatistics Valid=3201, Invalid=11805, Unknown=0, NotChecked=0, Total=15006 [2023-12-16 02:52:56,626 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 2716 mSDsluCounter, 2814 mSDsCounter, 0 mSdLazyCounter, 5248 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2802 SdHoareTripleChecker+Valid, 3179 SdHoareTripleChecker+Invalid, 6126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 5248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:52:56,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2802 Valid, 3179 Invalid, 6126 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [878 Valid, 5248 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-12-16 02:52:56,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4711 states. [2023-12-16 02:52:57,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4711 to 1919. [2023-12-16 02:52:57,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1919 states, 1430 states have (on average 1.4713286713286713) internal successors, (2104), 1436 states have internal predecessors, (2104), 400 states have call successors, (400), 88 states have call predecessors, (400), 88 states have return successors, (400), 394 states have call predecessors, (400), 400 states have call successors, (400) [2023-12-16 02:52:57,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 2904 transitions. [2023-12-16 02:52:57,220 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 2904 transitions. Word has length 444 [2023-12-16 02:52:57,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:52:57,221 INFO L495 AbstractCegarLoop]: Abstraction has 1919 states and 2904 transitions. [2023-12-16 02:52:57,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.7837837837837838) internal successors, (140), 36 states have internal predecessors, (140), 10 states have call successors, (71), 10 states have call predecessors, (71), 17 states have return successors, (71), 10 states have call predecessors, (71), 10 states have call successors, (71) [2023-12-16 02:52:57,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 2904 transitions. [2023-12-16 02:52:57,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2023-12-16 02:52:57,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:52:57,224 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:52:57,234 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 02:52:57,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-16 02:52:57,432 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:52:57,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:52:57,433 INFO L85 PathProgramCache]: Analyzing trace with hash 533309597, now seen corresponding path program 1 times [2023-12-16 02:52:57,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:52:57,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004368052] [2023-12-16 02:52:57,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:52:57,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:52:57,653 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:52:57,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1387747108] [2023-12-16 02:52:57,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:52:57,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:52:57,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:52:57,668 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:52:57,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 02:52:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:52:59,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 02:52:59,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 02:53:05,317 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 02:53:05,338 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 02:53:06,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-16 02:53:06,524 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-16 02:53:06,545 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 02:53:06,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 02:53:06,546 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 445 with TraceHistMax 71,while TraceCheckSpWp was constructing forward predicates,while executing Executor. [2023-12-16 02:53:06,549 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:53:06,550 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 02:53:06,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:53:06 BoogieIcfgContainer [2023-12-16 02:53:06,551 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 02:53:06,551 INFO L158 Benchmark]: Toolchain (without parser) took 75675.82ms. Allocated memory was 319.8MB in the beginning and 753.9MB in the end (delta: 434.1MB). Free memory was 264.4MB in the beginning and 612.6MB in the end (delta: -348.2MB). Peak memory consumption was 87.0MB. Max. memory is 8.0GB. [2023-12-16 02:53:06,552 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 199.2MB. Free memory is still 146.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 02:53:06,562 INFO L158 Benchmark]: CACSL2BoogieTranslator took 441.07ms. Allocated memory is still 319.8MB. Free memory was 263.9MB in the beginning and 241.8MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-12-16 02:53:06,563 INFO L158 Benchmark]: Boogie Procedure Inliner took 126.29ms. Allocated memory is still 319.8MB. Free memory was 241.8MB in the beginning and 236.1MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-16 02:53:06,563 INFO L158 Benchmark]: Boogie Preprocessor took 74.44ms. Allocated memory is still 319.8MB. Free memory was 236.1MB in the beginning and 228.7MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-16 02:53:06,564 INFO L158 Benchmark]: RCFGBuilder took 928.61ms. Allocated memory is still 319.8MB. Free memory was 228.7MB in the beginning and 181.0MB in the end (delta: 47.7MB). Peak memory consumption was 48.2MB. Max. memory is 8.0GB. [2023-12-16 02:53:06,564 INFO L158 Benchmark]: TraceAbstraction took 74101.13ms. Allocated memory was 319.8MB in the beginning and 753.9MB in the end (delta: 434.1MB). Free memory was 180.0MB in the beginning and 612.6MB in the end (delta: -432.6MB). Peak memory consumption was 2.0MB. Max. memory is 8.0GB. [2023-12-16 02:53:06,565 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 199.2MB. Free memory is still 146.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 441.07ms. Allocated memory is still 319.8MB. Free memory was 263.9MB in the beginning and 241.8MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 126.29ms. Allocated memory is still 319.8MB. Free memory was 241.8MB in the beginning and 236.1MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 74.44ms. Allocated memory is still 319.8MB. Free memory was 236.1MB in the beginning and 228.7MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * RCFGBuilder took 928.61ms. Allocated memory is still 319.8MB. Free memory was 228.7MB in the beginning and 181.0MB in the end (delta: 47.7MB). Peak memory consumption was 48.2MB. Max. memory is 8.0GB. * TraceAbstraction took 74101.13ms. Allocated memory was 319.8MB in the beginning and 753.9MB in the end (delta: 434.1MB). Free memory was 180.0MB in the beginning and 612.6MB in the end (delta: -432.6MB). Peak memory consumption was 2.0MB. 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 445 with TraceHistMax 71,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 188 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 74.1s, OverallIterations: 12, TraceHistogramMax: 71, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 25.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6889 SdHoareTripleChecker+Valid, 11.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6747 mSDsluCounter, 10645 SdHoareTripleChecker+Invalid, 10.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7049 mSDsCounter, 1812 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7947 IncrementalHoareTripleChecker+Invalid, 9759 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1812 mSolverCounterUnsat, 3596 mSDtfsCounter, 7947 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6030 GetRequests, 5844 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4627 ImplicationChecksByTransitivity, 23.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1919occurred in iteration=11, InterpolantAutomatonStates: 161, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 5890 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 29.8s InterpolantComputationTime, 5317 NumberOfCodeBlocks, 5317 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 5750 ConstructedInterpolants, 6 QuantifiedInterpolants, 24765 SizeOfPredicates, 41 NumberOfNonLiveVariables, 11066 ConjunctsInSsa, 109 ConjunctsInUnsatCore, 13 InterpolantComputations, 8 PerfectInterpolantSequences, 127972/129220 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