/usr/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 -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/recursive-simple/sum_10x0-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:22:06,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:22:06,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:22:06,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-31 01:22:06,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:22:06,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:22:06,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:22:06,950 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 01:22:06,979 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:22:06,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:22:06,979 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:22:06,979 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:22:06,980 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:22:06,981 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:22:06,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:22:06,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:22:06,982 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:22:06,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:22:06,982 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:22:06,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:22:06,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:22:06,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:22:06,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:22:06,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:22:06,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:22:06,983 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:22:06,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:22:06,983 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:22:06,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:22:06,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:22:06,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:22:06,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:22:06,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:22:06,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:22:06,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:22:06,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:22:06,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:22:06,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:22:06,985 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:22:06,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:22:06,985 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:22:06,986 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:22:06,986 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:22:06,986 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:22:07,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:22:07,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:22:07,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:22:07,223 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:22:07,223 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:22:07,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/sum_10x0-1.c [2023-03-31 01:22:08,368 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:22:08,516 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:22:08,517 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/sum_10x0-1.c [2023-03-31 01:22:08,521 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c00458b7/a372f8516c04460abe399d9f3f5b6936/FLAGc4801eb96 [2023-03-31 01:22:08,534 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c00458b7/a372f8516c04460abe399d9f3f5b6936 [2023-03-31 01:22:08,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:22:08,538 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:22:08,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:22:08,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:22:08,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:22:08,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:22:08" (1/1) ... [2023-03-31 01:22:08,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a383ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:22:08, skipping insertion in model container [2023-03-31 01:22:08,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:22:08" (1/1) ... [2023-03-31 01:22:08,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:22:08,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:22:08,690 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/sum_10x0-1.c[481,494] [2023-03-31 01:22:08,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:22:08,707 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:22:08,722 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/sum_10x0-1.c[481,494] [2023-03-31 01:22:08,723 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:22:08,734 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:22:08,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:22:08 WrapperNode [2023-03-31 01:22:08,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:22:08,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:22:08,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:22:08,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:22:08,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:22:08" (1/1) ... [2023-03-31 01:22:08,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:22:08" (1/1) ... [2023-03-31 01:22:08,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:22:08" (1/1) ... [2023-03-31 01:22:08,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:22:08" (1/1) ... [2023-03-31 01:22:08,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:22:08" (1/1) ... [2023-03-31 01:22:08,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:22:08" (1/1) ... [2023-03-31 01:22:08,762 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:22:08" (1/1) ... [2023-03-31 01:22:08,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:22:08" (1/1) ... [2023-03-31 01:22:08,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:22:08,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:22:08,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:22:08,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:22:08,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:22:08" (1/1) ... [2023-03-31 01:22:08,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:22:08,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:22:08,794 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 01:22:08,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:22:08,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:22:08,834 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:22:08,835 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2023-03-31 01:22:08,836 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:22:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:22:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:22:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:22:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:22:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2023-03-31 01:22:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:22:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:22:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:22:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:22:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:22:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:22:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:22:08,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 01:22:08,900 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:22:08,902 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:22:09,030 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:22:09,035 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:22:09,035 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 01:22:09,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:22:09 BoogieIcfgContainer [2023-03-31 01:22:09,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:22:09,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:22:09,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:22:09,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:22:09,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:22:08" (1/3) ... [2023-03-31 01:22:09,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe9b03d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:22:09, skipping insertion in model container [2023-03-31 01:22:09,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:22:08" (2/3) ... [2023-03-31 01:22:09,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe9b03d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:22:09, skipping insertion in model container [2023-03-31 01:22:09,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:22:09" (3/3) ... [2023-03-31 01:22:09,069 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_10x0-1.c [2023-03-31 01:22:09,101 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:22:09,101 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:22:09,163 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:22:09,170 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=LoopsAndPotentialCycles, 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;@4711bf9e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:22:09,170 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:22:09,175 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-31 01:22:09,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-03-31 01:22:09,181 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:22:09,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:22:09,182 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:22:09,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:22:09,187 INFO L85 PathProgramCache]: Analyzing trace with hash -2133330357, now seen corresponding path program 1 times [2023-03-31 01:22:09,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:22:09,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021834193] [2023-03-31 01:22:09,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:22:09,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:22:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:09,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:22:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:09,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:22:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:09,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:22:09,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:22:09,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021834193] [2023-03-31 01:22:09,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021834193] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:22:09,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:22:09,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 01:22:09,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146573078] [2023-03-31 01:22:09,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:22:09,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:22:09,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:22:09,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:22:09,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:22:09,558 INFO L87 Difference]: Start difference. First operand has 21 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 01:22:09,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:22:09,701 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2023-03-31 01:22:09,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 01:22:09,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2023-03-31 01:22:09,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:22:09,714 INFO L225 Difference]: With dead ends: 31 [2023-03-31 01:22:09,715 INFO L226 Difference]: Without dead ends: 19 [2023-03-31 01:22:09,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:22:09,724 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 22 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:22:09,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 28 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 01:22:09,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-03-31 01:22:09,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-03-31 01:22:09,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-03-31 01:22:09,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2023-03-31 01:22:09,757 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2023-03-31 01:22:09,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:22:09,757 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2023-03-31 01:22:09,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 01:22:09,758 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2023-03-31 01:22:09,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-03-31 01:22:09,759 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:22:09,759 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:22:09,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:22:09,760 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:22:09,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:22:09,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1485073517, now seen corresponding path program 1 times [2023-03-31 01:22:09,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:22:09,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866414589] [2023-03-31 01:22:09,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:22:09,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:22:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:09,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:22:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:09,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:22:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:09,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:10,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-31 01:22:10,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:22:10,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866414589] [2023-03-31 01:22:10,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866414589] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:22:10,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436784436] [2023-03-31 01:22:10,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:22:10,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:22:10,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:22:10,015 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) [2023-03-31 01:22:10,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 01:22:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:10,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-31 01:22:10,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:22:10,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-31 01:22:10,132 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 01:22:10,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-31 01:22:10,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436784436] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 01:22:10,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 01:22:10,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2023-03-31 01:22:10,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134160308] [2023-03-31 01:22:10,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 01:22:10,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 01:22:10,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:22:10,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 01:22:10,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:22:10,289 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2023-03-31 01:22:10,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:22:10,374 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2023-03-31 01:22:10,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:22:10,375 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) Word has length 20 [2023-03-31 01:22:10,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:22:10,376 INFO L225 Difference]: With dead ends: 26 [2023-03-31 01:22:10,376 INFO L226 Difference]: Without dead ends: 22 [2023-03-31 01:22:10,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-03-31 01:22:10,378 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 26 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:22:10,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 27 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 01:22:10,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-03-31 01:22:10,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-03-31 01:22:10,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 14 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-03-31 01:22:10,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2023-03-31 01:22:10,397 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 20 [2023-03-31 01:22:10,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:22:10,398 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2023-03-31 01:22:10,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2023-03-31 01:22:10,398 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2023-03-31 01:22:10,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-03-31 01:22:10,399 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:22:10,399 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:22:10,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 01:22:10,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:22:10,606 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:22:10,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:22:10,607 INFO L85 PathProgramCache]: Analyzing trace with hash 310553675, now seen corresponding path program 2 times [2023-03-31 01:22:10,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:22:10,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523992656] [2023-03-31 01:22:10,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:22:10,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:22:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:10,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:22:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:10,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:22:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:10,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:10,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:10,890 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-03-31 01:22:10,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:22:10,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523992656] [2023-03-31 01:22:10,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523992656] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:22:10,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329749068] [2023-03-31 01:22:10,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-03-31 01:22:10,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:22:10,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:22:10,894 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) [2023-03-31 01:22:10,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 01:22:10,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-03-31 01:22:10,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 01:22:10,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2023-03-31 01:22:10,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:22:11,025 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-03-31 01:22:11,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 01:22:11,385 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-03-31 01:22:11,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329749068] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 01:22:11,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 01:22:11,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 13 [2023-03-31 01:22:11,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856809273] [2023-03-31 01:22:11,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 01:22:11,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-31 01:22:11,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:22:11,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-31 01:22:11,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-03-31 01:22:11,391 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 13 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 7 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) [2023-03-31 01:22:11,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:22:11,519 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2023-03-31 01:22:11,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 01:22:11,520 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 7 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) Word has length 26 [2023-03-31 01:22:11,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:22:11,522 INFO L225 Difference]: With dead ends: 29 [2023-03-31 01:22:11,522 INFO L226 Difference]: Without dead ends: 25 [2023-03-31 01:22:11,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-03-31 01:22:11,525 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 46 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:22:11,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 27 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 01:22:11,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-03-31 01:22:11,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-03-31 01:22:11,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 16 states have internal predecessors, (16), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-03-31 01:22:11,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2023-03-31 01:22:11,534 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 26 [2023-03-31 01:22:11,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:22:11,534 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2023-03-31 01:22:11,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 7 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) [2023-03-31 01:22:11,534 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2023-03-31 01:22:11,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-03-31 01:22:11,535 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:22:11,535 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:22:11,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 01:22:11,736 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,SelfDestructingSolverStorable2 [2023-03-31 01:22:11,736 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:22:11,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:22:11,736 INFO L85 PathProgramCache]: Analyzing trace with hash 107156371, now seen corresponding path program 3 times [2023-03-31 01:22:11,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:22:11,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115191888] [2023-03-31 01:22:11,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:22:11,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:22:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:11,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:22:11,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:11,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:22:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:11,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:11,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:11,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:11,980 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-03-31 01:22:11,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:22:11,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115191888] [2023-03-31 01:22:11,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115191888] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:22:11,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971917688] [2023-03-31 01:22:11,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-31 01:22:11,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:22:11,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:22:11,985 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) [2023-03-31 01:22:11,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 01:22:12,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-03-31 01:22:12,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 01:22:12,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2023-03-31 01:22:12,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:22:12,098 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-03-31 01:22:12,099 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 01:22:12,564 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-03-31 01:22:12,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971917688] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 01:22:12,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 01:22:12,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 15 [2023-03-31 01:22:12,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439945069] [2023-03-31 01:22:12,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 01:22:12,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-03-31 01:22:12,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:22:12,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-03-31 01:22:12,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-03-31 01:22:12,576 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 15 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 states have internal predecessors, (29), 8 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) [2023-03-31 01:22:12,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:22:12,702 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2023-03-31 01:22:12,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-31 01:22:12,703 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 states have internal predecessors, (29), 8 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) Word has length 32 [2023-03-31 01:22:12,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:22:12,705 INFO L225 Difference]: With dead ends: 32 [2023-03-31 01:22:12,705 INFO L226 Difference]: Without dead ends: 28 [2023-03-31 01:22:12,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 63 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2023-03-31 01:22:12,708 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 48 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:22:12,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 37 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 01:22:12,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-03-31 01:22:12,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-03-31 01:22:12,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2023-03-31 01:22:12,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2023-03-31 01:22:12,724 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 32 [2023-03-31 01:22:12,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:22:12,725 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2023-03-31 01:22:12,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 states have internal predecessors, (29), 8 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) [2023-03-31 01:22:12,725 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2023-03-31 01:22:12,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-03-31 01:22:12,727 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:22:12,727 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:22:12,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-31 01:22:12,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:22:12,933 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:22:12,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:22:12,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1078943157, now seen corresponding path program 4 times [2023-03-31 01:22:12,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:22:12,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803407753] [2023-03-31 01:22:12,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:22:12,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:22:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:12,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:22:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:13,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:22:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:13,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:13,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:13,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:13,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:13,151 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-03-31 01:22:13,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:22:13,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803407753] [2023-03-31 01:22:13,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803407753] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:22:13,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200761400] [2023-03-31 01:22:13,151 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-03-31 01:22:13,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:22:13,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:22:13,153 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) [2023-03-31 01:22:13,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-31 01:22:13,205 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-03-31 01:22:13,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 01:22:13,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2023-03-31 01:22:13,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:22:13,253 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-03-31 01:22:13,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 01:22:13,897 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-03-31 01:22:13,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200761400] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 01:22:13,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 01:22:13,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 13] total 17 [2023-03-31 01:22:13,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962674912] [2023-03-31 01:22:13,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 01:22:13,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-03-31 01:22:13,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:22:13,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-03-31 01:22:13,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2023-03-31 01:22:13,902 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 17 states, 15 states have (on average 2.2) internal successors, (33), 16 states have internal predecessors, (33), 9 states have call successors, (11), 2 states have call predecessors, (11), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2023-03-31 01:22:14,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:22:14,047 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2023-03-31 01:22:14,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 01:22:14,047 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.2) internal successors, (33), 16 states have internal predecessors, (33), 9 states have call successors, (11), 2 states have call predecessors, (11), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) Word has length 38 [2023-03-31 01:22:14,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:22:14,049 INFO L225 Difference]: With dead ends: 35 [2023-03-31 01:22:14,049 INFO L226 Difference]: Without dead ends: 31 [2023-03-31 01:22:14,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 75 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:22:14,051 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 36 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:22:14,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 57 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 01:22:14,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-03-31 01:22:14,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-03-31 01:22:14,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 20 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 7 states have return successors, (8), 7 states have call predecessors, (8), 3 states have call successors, (8) [2023-03-31 01:22:14,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2023-03-31 01:22:14,064 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 38 [2023-03-31 01:22:14,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:22:14,064 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2023-03-31 01:22:14,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.2) internal successors, (33), 16 states have internal predecessors, (33), 9 states have call successors, (11), 2 states have call predecessors, (11), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2023-03-31 01:22:14,066 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2023-03-31 01:22:14,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-03-31 01:22:14,067 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:22:14,068 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:22:14,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-03-31 01:22:14,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:22:14,277 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:22:14,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:22:14,277 INFO L85 PathProgramCache]: Analyzing trace with hash -2067901549, now seen corresponding path program 5 times [2023-03-31 01:22:14,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:22:14,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710103115] [2023-03-31 01:22:14,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:22:14,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:22:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:14,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:22:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:14,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:22:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:14,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:14,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:14,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:14,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:14,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:14,552 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-03-31 01:22:14,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:22:14,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710103115] [2023-03-31 01:22:14,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710103115] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:22:14,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611563473] [2023-03-31 01:22:14,554 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-03-31 01:22:14,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:22:14,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:22:14,557 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) [2023-03-31 01:22:14,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-31 01:22:14,615 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-03-31 01:22:14,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 01:22:14,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 14 conjunts are in the unsatisfiable core [2023-03-31 01:22:14,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:22:14,667 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-03-31 01:22:14,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 01:22:15,647 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-03-31 01:22:15,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611563473] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 01:22:15,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 01:22:15,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 15] total 19 [2023-03-31 01:22:15,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750473373] [2023-03-31 01:22:15,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 01:22:15,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-03-31 01:22:15,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:22:15,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-03-31 01:22:15,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2023-03-31 01:22:15,651 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 19 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (12), 2 states have call predecessors, (12), 7 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2023-03-31 01:22:15,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:22:15,817 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2023-03-31 01:22:15,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-31 01:22:15,818 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (12), 2 states have call predecessors, (12), 7 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) Word has length 44 [2023-03-31 01:22:15,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:22:15,821 INFO L225 Difference]: With dead ends: 38 [2023-03-31 01:22:15,821 INFO L226 Difference]: Without dead ends: 34 [2023-03-31 01:22:15,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 87 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=209, Invalid=493, Unknown=0, NotChecked=0, Total=702 [2023-03-31 01:22:15,823 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 51 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:22:15,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 67 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 01:22:15,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-03-31 01:22:15,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-03-31 01:22:15,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 22 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2023-03-31 01:22:15,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2023-03-31 01:22:15,830 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 44 [2023-03-31 01:22:15,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:22:15,830 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2023-03-31 01:22:15,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (12), 2 states have call predecessors, (12), 7 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2023-03-31 01:22:15,831 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2023-03-31 01:22:15,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-03-31 01:22:15,837 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:22:15,838 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:22:15,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-03-31 01:22:16,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:22:16,043 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:22:16,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:22:16,043 INFO L85 PathProgramCache]: Analyzing trace with hash 827447371, now seen corresponding path program 6 times [2023-03-31 01:22:16,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:22:16,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195128043] [2023-03-31 01:22:16,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:22:16,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:22:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:16,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:22:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:16,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:22:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:16,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:16,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:16,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:16,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:16,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:16,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:16,370 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-03-31 01:22:16,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:22:16,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195128043] [2023-03-31 01:22:16,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195128043] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:22:16,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054314305] [2023-03-31 01:22:16,371 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-03-31 01:22:16,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:22:16,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:22:16,372 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) [2023-03-31 01:22:16,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-03-31 01:22:16,444 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-03-31 01:22:16,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 01:22:16,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 16 conjunts are in the unsatisfiable core [2023-03-31 01:22:16,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:22:16,505 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-03-31 01:22:16,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 01:22:17,862 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-03-31 01:22:17,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054314305] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 01:22:17,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 01:22:17,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 17] total 21 [2023-03-31 01:22:17,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28729417] [2023-03-31 01:22:17,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 01:22:17,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-03-31 01:22:17,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:22:17,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-03-31 01:22:17,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2023-03-31 01:22:17,865 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 21 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 20 states have internal predecessors, (41), 11 states have call successors, (13), 2 states have call predecessors, (13), 8 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) [2023-03-31 01:22:18,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:22:18,047 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2023-03-31 01:22:18,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-03-31 01:22:18,048 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 20 states have internal predecessors, (41), 11 states have call successors, (13), 2 states have call predecessors, (13), 8 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) Word has length 50 [2023-03-31 01:22:18,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:22:18,049 INFO L225 Difference]: With dead ends: 41 [2023-03-31 01:22:18,049 INFO L226 Difference]: Without dead ends: 37 [2023-03-31 01:22:18,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 99 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=261, Invalid=609, Unknown=0, NotChecked=0, Total=870 [2023-03-31 01:22:18,050 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 88 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:22:18,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 47 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 01:22:18,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-03-31 01:22:18,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-03-31 01:22:18,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 24 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 9 states have return successors, (10), 9 states have call predecessors, (10), 3 states have call successors, (10) [2023-03-31 01:22:18,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2023-03-31 01:22:18,061 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 50 [2023-03-31 01:22:18,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:22:18,061 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2023-03-31 01:22:18,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 20 states have internal predecessors, (41), 11 states have call successors, (13), 2 states have call predecessors, (13), 8 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) [2023-03-31 01:22:18,061 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2023-03-31 01:22:18,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-03-31 01:22:18,062 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:22:18,062 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:22:18,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-03-31 01:22:18,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:22:18,265 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:22:18,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:22:18,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1830638483, now seen corresponding path program 7 times [2023-03-31 01:22:18,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:22:18,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446000205] [2023-03-31 01:22:18,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:22:18,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:22:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:18,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:22:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:18,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:22:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:18,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:18,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:18,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:18,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:18,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:18,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:18,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:18,650 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-03-31 01:22:18,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:22:18,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446000205] [2023-03-31 01:22:18,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446000205] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:22:18,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362620470] [2023-03-31 01:22:18,651 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-03-31 01:22:18,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:22:18,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:22:18,653 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) [2023-03-31 01:22:18,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-03-31 01:22:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:18,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 18 conjunts are in the unsatisfiable core [2023-03-31 01:22:18,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:22:18,811 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-03-31 01:22:18,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 01:22:20,500 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-03-31 01:22:20,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362620470] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 01:22:20,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 01:22:20,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 19] total 23 [2023-03-31 01:22:20,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468372684] [2023-03-31 01:22:20,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 01:22:20,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-03-31 01:22:20,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:22:20,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-03-31 01:22:20,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2023-03-31 01:22:20,503 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 23 states, 21 states have (on average 2.142857142857143) internal successors, (45), 22 states have internal predecessors, (45), 12 states have call successors, (14), 2 states have call predecessors, (14), 9 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) [2023-03-31 01:22:20,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:22:20,710 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2023-03-31 01:22:20,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 01:22:20,711 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.142857142857143) internal successors, (45), 22 states have internal predecessors, (45), 12 states have call successors, (14), 2 states have call predecessors, (14), 9 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) Word has length 56 [2023-03-31 01:22:20,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:22:20,713 INFO L225 Difference]: With dead ends: 44 [2023-03-31 01:22:20,713 INFO L226 Difference]: Without dead ends: 40 [2023-03-31 01:22:20,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 111 SyntacticMatches, 8 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=319, Invalid=737, Unknown=0, NotChecked=0, Total=1056 [2023-03-31 01:22:20,714 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 126 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:22:20,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 62 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 01:22:20,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-03-31 01:22:20,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-03-31 01:22:20,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 25 states have (on average 1.04) internal successors, (26), 26 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 10 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2023-03-31 01:22:20,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2023-03-31 01:22:20,718 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 56 [2023-03-31 01:22:20,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:22:20,718 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2023-03-31 01:22:20,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.142857142857143) internal successors, (45), 22 states have internal predecessors, (45), 12 states have call successors, (14), 2 states have call predecessors, (14), 9 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) [2023-03-31 01:22:20,719 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2023-03-31 01:22:20,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-03-31 01:22:20,720 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:22:20,720 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:22:20,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-03-31 01:22:20,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:22:20,921 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:22:20,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:22:20,921 INFO L85 PathProgramCache]: Analyzing trace with hash 206982731, now seen corresponding path program 8 times [2023-03-31 01:22:20,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:22:20,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612485775] [2023-03-31 01:22:20,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:22:20,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:22:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:21,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:22:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:21,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:22:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:21,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:21,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:21,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:21,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:21,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:21,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:21,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:21,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:21,426 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-03-31 01:22:21,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:22:21,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612485775] [2023-03-31 01:22:21,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612485775] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:22:21,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804214981] [2023-03-31 01:22:21,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-03-31 01:22:21,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:22:21,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:22:21,428 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) [2023-03-31 01:22:21,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-03-31 01:22:21,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-03-31 01:22:21,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 01:22:21,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 20 conjunts are in the unsatisfiable core [2023-03-31 01:22:21,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:22:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-03-31 01:22:21,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 01:22:23,980 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-03-31 01:22:23,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804214981] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 01:22:23,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 01:22:23,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 21] total 25 [2023-03-31 01:22:23,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053081639] [2023-03-31 01:22:23,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 01:22:23,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-03-31 01:22:23,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:22:23,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-03-31 01:22:23,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2023-03-31 01:22:23,986 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 25 states, 23 states have (on average 2.130434782608696) internal successors, (49), 24 states have internal predecessors, (49), 13 states have call successors, (15), 2 states have call predecessors, (15), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) [2023-03-31 01:22:24,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:22:24,160 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2023-03-31 01:22:24,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-03-31 01:22:24,160 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.130434782608696) internal successors, (49), 24 states have internal predecessors, (49), 13 states have call successors, (15), 2 states have call predecessors, (15), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) Word has length 62 [2023-03-31 01:22:24,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:22:24,161 INFO L225 Difference]: With dead ends: 47 [2023-03-31 01:22:24,161 INFO L226 Difference]: Without dead ends: 43 [2023-03-31 01:22:24,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 123 SyntacticMatches, 9 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=383, Invalid=877, Unknown=0, NotChecked=0, Total=1260 [2023-03-31 01:22:24,162 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 72 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:22:24,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 62 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 01:22:24,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-03-31 01:22:24,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-03-31 01:22:24,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 27 states have (on average 1.037037037037037) internal successors, (28), 28 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 11 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12) [2023-03-31 01:22:24,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2023-03-31 01:22:24,175 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 62 [2023-03-31 01:22:24,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:22:24,175 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2023-03-31 01:22:24,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.130434782608696) internal successors, (49), 24 states have internal predecessors, (49), 13 states have call successors, (15), 2 states have call predecessors, (15), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) [2023-03-31 01:22:24,175 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2023-03-31 01:22:24,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-03-31 01:22:24,175 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:22:24,176 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:22:24,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-03-31 01:22:24,377 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,SelfDestructingSolverStorable8 [2023-03-31 01:22:24,378 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:22:24,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:22:24,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1309676435, now seen corresponding path program 9 times [2023-03-31 01:22:24,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:22:24,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230012208] [2023-03-31 01:22:24,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:22:24,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:22:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:24,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:22:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:24,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:22:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:24,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:24,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:24,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:24,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:24,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:24,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:24,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:24,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:24,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:24,909 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-03-31 01:22:24,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:22:24,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230012208] [2023-03-31 01:22:24,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230012208] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:22:24,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155106542] [2023-03-31 01:22:24,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-31 01:22:24,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:22:24,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:22:24,911 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) [2023-03-31 01:22:24,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-03-31 01:22:25,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-03-31 01:22:25,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 01:22:25,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 22 conjunts are in the unsatisfiable core [2023-03-31 01:22:25,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:22:25,148 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-03-31 01:22:25,148 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 01:22:28,106 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-03-31 01:22:28,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155106542] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 01:22:28,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 01:22:28,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 23] total 26 [2023-03-31 01:22:28,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096966324] [2023-03-31 01:22:28,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 01:22:28,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-03-31 01:22:28,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:22:28,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-03-31 01:22:28,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2023-03-31 01:22:28,108 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 26 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 13 states have call successors, (15), 2 states have call predecessors, (15), 11 states have return successors, (29), 11 states have call predecessors, (29), 13 states have call successors, (29) [2023-03-31 01:22:28,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:22:28,319 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2023-03-31 01:22:28,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-03-31 01:22:28,320 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 13 states have call successors, (15), 2 states have call predecessors, (15), 11 states have return successors, (29), 11 states have call predecessors, (29), 13 states have call successors, (29) Word has length 68 [2023-03-31 01:22:28,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:22:28,320 INFO L225 Difference]: With dead ends: 50 [2023-03-31 01:22:28,321 INFO L226 Difference]: Without dead ends: 46 [2023-03-31 01:22:28,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 135 SyntacticMatches, 11 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=449, Invalid=957, Unknown=0, NotChecked=0, Total=1406 [2023-03-31 01:22:28,322 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 121 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:22:28,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 62 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 01:22:28,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-03-31 01:22:28,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-03-31 01:22:28,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 30 states have internal predecessors, (30), 4 states have call successors, (4), 3 states have call predecessors, (4), 12 states have return successors, (13), 12 states have call predecessors, (13), 3 states have call successors, (13) [2023-03-31 01:22:28,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2023-03-31 01:22:28,326 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 68 [2023-03-31 01:22:28,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:22:28,326 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2023-03-31 01:22:28,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 13 states have call successors, (15), 2 states have call predecessors, (15), 11 states have return successors, (29), 11 states have call predecessors, (29), 13 states have call successors, (29) [2023-03-31 01:22:28,326 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2023-03-31 01:22:28,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-03-31 01:22:28,327 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:22:28,327 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:22:28,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-03-31 01:22:28,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-03-31 01:22:28,541 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:22:28,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:22:28,541 INFO L85 PathProgramCache]: Analyzing trace with hash -240253877, now seen corresponding path program 10 times [2023-03-31 01:22:28,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:22:28,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468890806] [2023-03-31 01:22:28,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:22:28,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:22:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:28,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:22:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:28,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:22:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:29,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:29,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:29,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:29,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:29,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:30,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:30,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:30,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:30,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:30,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-03-31 01:22:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:22:30,501 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 144 proven. 20 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-03-31 01:22:30,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:22:30,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468890806] [2023-03-31 01:22:30,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468890806] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:22:30,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022463767] [2023-03-31 01:22:30,501 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-03-31 01:22:30,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:22:30,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:22:30,503 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) [2023-03-31 01:22:30,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-03-31 01:22:30,717 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-03-31 01:22:30,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 01:22:30,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 117 conjunts are in the unsatisfiable core [2023-03-31 01:22:30,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:22:31,107 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 154 proven. 20 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-03-31 01:22:31,107 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 01:22:38,106 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 135 proven. 120 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-03-31 01:22:38,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022463767] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 01:22:38,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 01:22:38,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 38] total 69 [2023-03-31 01:22:38,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674911298] [2023-03-31 01:22:38,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 01:22:38,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-03-31 01:22:38,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:22:38,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-03-31 01:22:38,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=878, Invalid=3814, Unknown=0, NotChecked=0, Total=4692 [2023-03-31 01:22:38,110 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 69 states, 64 states have (on average 1.3125) internal successors, (84), 45 states have internal predecessors, (84), 17 states have call successors, (19), 2 states have call predecessors, (19), 23 states have return successors, (34), 24 states have call predecessors, (34), 17 states have call successors, (34) [2023-03-31 01:22:39,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:22:39,392 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2023-03-31 01:22:39,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-03-31 01:22:39,393 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 64 states have (on average 1.3125) internal successors, (84), 45 states have internal predecessors, (84), 17 states have call successors, (19), 2 states have call predecessors, (19), 23 states have return successors, (34), 24 states have call predecessors, (34), 17 states have call successors, (34) Word has length 74 [2023-03-31 01:22:39,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:22:39,393 INFO L225 Difference]: With dead ends: 47 [2023-03-31 01:22:39,393 INFO L226 Difference]: Without dead ends: 0 [2023-03-31 01:22:39,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 128 SyntacticMatches, 3 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1370 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1837, Invalid=7283, Unknown=0, NotChecked=0, Total=9120 [2023-03-31 01:22:39,396 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 41 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:22:39,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 132 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:22:39,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-03-31 01:22:39,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-03-31 01:22:39,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-03-31 01:22:39,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-03-31 01:22:39,396 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 74 [2023-03-31 01:22:39,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:22:39,397 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-03-31 01:22:39,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 64 states have (on average 1.3125) internal successors, (84), 45 states have internal predecessors, (84), 17 states have call successors, (19), 2 states have call predecessors, (19), 23 states have return successors, (34), 24 states have call predecessors, (34), 17 states have call successors, (34) [2023-03-31 01:22:39,397 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-03-31 01:22:39,397 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-03-31 01:22:39,399 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 01:22:39,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-03-31 01:22:39,605 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,SelfDestructingSolverStorable10 [2023-03-31 01:22:39,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-03-31 01:22:39,625 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2023-03-31 01:22:39,625 INFO L899 garLoopResultBuilder]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2023-03-31 01:22:39,625 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 3) no Hoare annotation was computed. [2023-03-31 01:22:39,625 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2023-03-31 01:22:39,625 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2023-03-31 01:22:39,625 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-03-31 01:22:39,625 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-03-31 01:22:39,626 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-03-31 01:22:39,626 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-03-31 01:22:39,626 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 01:22:39,626 INFO L899 garLoopResultBuilder]: For program point sumEXIT(lines 5 11) no Hoare annotation was computed. [2023-03-31 01:22:39,626 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 5 11) the Hoare annotation is: true [2023-03-31 01:22:39,626 INFO L895 garLoopResultBuilder]: At program point L9(line 9) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (= sum_~m |sum_#in~m|) (<= 1 sum_~n)) [2023-03-31 01:22:39,626 INFO L899 garLoopResultBuilder]: For program point L9-1(line 9) no Hoare annotation was computed. [2023-03-31 01:22:39,626 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 10) no Hoare annotation was computed. [2023-03-31 01:22:39,626 INFO L899 garLoopResultBuilder]: For program point sumFINAL(lines 5 11) no Hoare annotation was computed. [2023-03-31 01:22:39,626 INFO L899 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2023-03-31 01:22:39,626 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 13 20) no Hoare annotation was computed. [2023-03-31 01:22:39,627 INFO L899 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2023-03-31 01:22:39,627 INFO L899 garLoopResultBuilder]: For program point L17(lines 17 19) no Hoare annotation was computed. [2023-03-31 01:22:39,627 INFO L895 garLoopResultBuilder]: At program point L16(line 16) the Hoare annotation is: (and (= main_~b~0 0) (<= 10 main_~a~0) (<= main_~a~0 10)) [2023-03-31 01:22:39,627 INFO L899 garLoopResultBuilder]: For program point L16-1(line 16) no Hoare annotation was computed. [2023-03-31 01:22:39,627 INFO L899 garLoopResultBuilder]: For program point L17-2(lines 13 20) no Hoare annotation was computed. [2023-03-31 01:22:39,627 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 13 20) the Hoare annotation is: true [2023-03-31 01:22:39,629 INFO L445 BasicCegarLoop]: Path program histogram: [10, 1] [2023-03-31 01:22:39,631 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 01:22:39,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 01:22:39 BoogieIcfgContainer [2023-03-31 01:22:39,634 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 01:22:39,634 INFO L158 Benchmark]: Toolchain (without parser) took 31096.36ms. Allocated memory was 259.0MB in the beginning and 449.8MB in the end (delta: 190.8MB). Free memory was 214.2MB in the beginning and 372.2MB in the end (delta: -158.0MB). Peak memory consumption was 34.9MB. Max. memory is 8.0GB. [2023-03-31 01:22:39,634 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 181.4MB. Free memory was 133.3MB in the beginning and 133.2MB in the end (delta: 143.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 01:22:39,634 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.27ms. Allocated memory is still 259.0MB. Free memory was 214.2MB in the beginning and 204.2MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 01:22:39,635 INFO L158 Benchmark]: Boogie Preprocessor took 29.49ms. Allocated memory is still 259.0MB. Free memory was 204.2MB in the beginning and 202.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-03-31 01:22:39,635 INFO L158 Benchmark]: RCFGBuilder took 284.77ms. Allocated memory is still 259.0MB. Free memory was 202.7MB in the beginning and 192.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 01:22:39,636 INFO L158 Benchmark]: TraceAbstraction took 30580.79ms. Allocated memory was 259.0MB in the beginning and 449.8MB in the end (delta: 190.8MB). Free memory was 191.7MB in the beginning and 372.2MB in the end (delta: -180.5MB). Peak memory consumption was 11.9MB. Max. memory is 8.0GB. [2023-03-31 01:22:39,636 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 181.4MB. Free memory was 133.3MB in the beginning and 133.2MB in the end (delta: 143.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 196.27ms. Allocated memory is still 259.0MB. Free memory was 214.2MB in the beginning and 204.2MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.49ms. Allocated memory is still 259.0MB. Free memory was 204.2MB in the beginning and 202.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 284.77ms. Allocated memory is still 259.0MB. Free memory was 202.7MB in the beginning and 192.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 30580.79ms. Allocated memory was 259.0MB in the beginning and 449.8MB in the end (delta: 190.8MB). Free memory was 191.7MB in the beginning and 372.2MB in the end (delta: -180.5MB). Peak memory consumption was 11.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 30.5s, OverallIterations: 11, TraceHistogramMax: 11, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 677 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 677 mSDsluCounter, 608 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 551 mSDsCounter, 362 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1586 IncrementalHoareTripleChecker+Invalid, 1948 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 362 mSolverCounterUnsat, 57 mSDtfsCounter, 1586 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1298 GetRequests, 915 SyntacticMatches, 58 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3196 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=10, InterpolantAutomatonStates: 135, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 31 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 24.0s InterpolantComputationTime, 954 NumberOfCodeBlocks, 948 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 1393 ConstructedInterpolants, 0 QuantifiedInterpolants, 5485 SizeOfPredicates, 80 NumberOfNonLiveVariables, 1597 ConjunctsInSsa, 243 ConjunctsInUnsatCore, 31 InterpolantComputations, 1 PerfectInterpolantSequences, 1835/3630 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-03-31 01:22:39,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...