/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/eca-rers2012/Problem11_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 23:16:29,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 23:16:29,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 23:16:29,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-30 23:16:29,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-30 23:16:29,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-30 23:16:29,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-30 23:16:29,961 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 [2023-03-30 23:16:29,985 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 23:16:29,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 23:16:29,985 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 23:16:29,986 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 23:16:29,987 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 23:16:29,987 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 23:16:29,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 23:16:29,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 23:16:29,987 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 23:16:29,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 23:16:29,988 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 23:16:29,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 23:16:29,988 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 23:16:29,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 23:16:29,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 23:16:29,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 23:16:29,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 23:16:29,989 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 23:16:29,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 23:16:29,989 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 23:16:29,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 23:16:29,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 23:16:29,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 23:16:29,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 23:16:29,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:16:29,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 23:16:29,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 23:16:29,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 23:16:29,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 23:16:29,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 23:16:29,990 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 23:16:29,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 23:16:29,990 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 23:16:29,990 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 23:16:29,991 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 23:16:29,991 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 23:16:30,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 23:16:30,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 23:16:30,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 23:16:30,221 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 23:16:30,221 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 23:16:30,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem11_label26.c [2023-03-30 23:16:31,150 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 23:16:31,418 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 23:16:31,419 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label26.c [2023-03-30 23:16:31,432 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40b5f726e/9c68df85a75d40a28e53bffb7a5bb4f2/FLAG427c2274a [2023-03-30 23:16:31,449 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40b5f726e/9c68df85a75d40a28e53bffb7a5bb4f2 [2023-03-30 23:16:31,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 23:16:31,452 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 23:16:31,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 23:16:31,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 23:16:31,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 23:16:31,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:16:31" (1/1) ... [2023-03-30 23:16:31,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ba6063a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:31, skipping insertion in model container [2023-03-30 23:16:31,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:16:31" (1/1) ... [2023-03-30 23:16:31,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 23:16:31,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 23:16:31,689 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/eca-rers2012/Problem11_label26.c[5699,5712] [2023-03-30 23:16:31,856 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:16:31,863 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 23:16:31,879 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/eca-rers2012/Problem11_label26.c[5699,5712] [2023-03-30 23:16:31,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:16:31,991 INFO L208 MainTranslator]: Completed translation [2023-03-30 23:16:31,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:31 WrapperNode [2023-03-30 23:16:31,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 23:16:31,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 23:16:31,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 23:16:31,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 23:16:32,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:31" (1/1) ... [2023-03-30 23:16:32,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:31" (1/1) ... [2023-03-30 23:16:32,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:31" (1/1) ... [2023-03-30 23:16:32,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:31" (1/1) ... [2023-03-30 23:16:32,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:31" (1/1) ... [2023-03-30 23:16:32,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:31" (1/1) ... [2023-03-30 23:16:32,098 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:31" (1/1) ... [2023-03-30 23:16:32,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:31" (1/1) ... [2023-03-30 23:16:32,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 23:16:32,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 23:16:32,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 23:16:32,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 23:16:32,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:31" (1/1) ... [2023-03-30 23:16:32,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:16:32,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:16:32,139 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) [2023-03-30 23:16:32,155 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 [2023-03-30 23:16:32,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 23:16:32,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 23:16:32,171 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 23:16:32,171 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-30 23:16:32,171 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 23:16:32,171 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-30 23:16:32,171 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 23:16:32,171 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 23:16:32,171 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 23:16:32,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 23:16:32,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 23:16:32,171 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-30 23:16:32,171 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 23:16:32,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 23:16:32,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 23:16:32,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 23:16:32,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 23:16:32,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 23:16:32,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 23:16:32,236 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 23:16:32,237 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 23:16:33,174 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 23:16:33,189 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 23:16:33,189 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-30 23:16:33,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:16:33 BoogieIcfgContainer [2023-03-30 23:16:33,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 23:16:33,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 23:16:33,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 23:16:33,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 23:16:33,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 11:16:31" (1/3) ... [2023-03-30 23:16:33,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a415844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:16:33, skipping insertion in model container [2023-03-30 23:16:33,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:31" (2/3) ... [2023-03-30 23:16:33,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a415844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:16:33, skipping insertion in model container [2023-03-30 23:16:33,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:16:33" (3/3) ... [2023-03-30 23:16:33,199 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label26.c [2023-03-30 23:16:33,211 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 23:16:33,211 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 23:16:33,261 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 23:16:33,266 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;@7d42ed4d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 23:16:33,266 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 23:16:33,272 INFO L276 IsEmpty]: Start isEmpty. Operand has 292 states, 284 states have (on average 1.7077464788732395) internal successors, (485), 285 states have internal predecessors, (485), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 23:16:33,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-03-30 23:16:33,279 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:16:33,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:16:33,280 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:16:33,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:16:33,284 INFO L85 PathProgramCache]: Analyzing trace with hash 2108054002, now seen corresponding path program 1 times [2023-03-30 23:16:33,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:16:33,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919716985] [2023-03-30 23:16:33,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:33,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:16:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:33,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:16:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:33,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:16:33,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:16:33,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919716985] [2023-03-30 23:16:33,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919716985] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:16:33,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:16:33,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-30 23:16:33,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999533829] [2023-03-30 23:16:33,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:16:33,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:16:33,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:16:33,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:16:33,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:16:33,826 INFO L87 Difference]: Start difference. First operand has 292 states, 284 states have (on average 1.7077464788732395) internal successors, (485), 285 states have internal predecessors, (485), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:16:35,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:16:35,683 INFO L93 Difference]: Finished difference Result 999 states and 1795 transitions. [2023-03-30 23:16:35,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 23:16:35,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2023-03-30 23:16:35,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:16:35,703 INFO L225 Difference]: With dead ends: 999 [2023-03-30 23:16:35,703 INFO L226 Difference]: Without dead ends: 639 [2023-03-30 23:16:35,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:16:35,713 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1197 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 1575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-03-30 23:16:35,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1197 Valid, 72 Invalid, 1575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [460 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-03-30 23:16:35,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2023-03-30 23:16:35,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 621. [2023-03-30 23:16:35,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 608 states have (on average 1.5411184210526316) internal successors, (937), 611 states have internal predecessors, (937), 5 states have call successors, (5), 5 states have call predecessors, (5), 7 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-03-30 23:16:35,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 956 transitions. [2023-03-30 23:16:35,770 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 956 transitions. Word has length 45 [2023-03-30 23:16:35,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:16:35,770 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 956 transitions. [2023-03-30 23:16:35,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:16:35,770 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 956 transitions. [2023-03-30 23:16:35,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-03-30 23:16:35,777 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:16:35,778 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:16:35,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 23:16:35,778 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:16:35,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:16:35,779 INFO L85 PathProgramCache]: Analyzing trace with hash -738558246, now seen corresponding path program 1 times [2023-03-30 23:16:35,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:16:35,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422223918] [2023-03-30 23:16:35,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:35,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:16:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:36,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:16:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:36,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:16:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:36,120 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:16:36,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:16:36,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422223918] [2023-03-30 23:16:36,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422223918] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:16:36,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375473787] [2023-03-30 23:16:36,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:36,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:16:36,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:16:36,124 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) [2023-03-30 23:16:36,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-30 23:16:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:36,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 11 conjunts are in the unsatisfiable core [2023-03-30 23:16:36,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:16:36,566 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:16:36,566 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:16:36,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375473787] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:16:36,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:16:36,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-03-30 23:16:36,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149491599] [2023-03-30 23:16:36,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:16:36,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:16:36,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:16:36,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:16:36,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:16:36,573 INFO L87 Difference]: Start difference. First operand 621 states and 956 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:16:37,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:16:37,541 INFO L93 Difference]: Finished difference Result 1833 states and 2866 transitions. [2023-03-30 23:16:37,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-30 23:16:37,543 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 119 [2023-03-30 23:16:37,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:16:37,547 INFO L225 Difference]: With dead ends: 1833 [2023-03-30 23:16:37,548 INFO L226 Difference]: Without dead ends: 1218 [2023-03-30 23:16:37,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:16:37,550 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 496 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-30 23:16:37,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 130 Invalid, 1254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-30 23:16:37,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2023-03-30 23:16:37,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1009. [2023-03-30 23:16:37,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 986 states have (on average 1.3519269776876268) internal successors, (1333), 995 states have internal predecessors, (1333), 7 states have call successors, (7), 7 states have call predecessors, (7), 15 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-03-30 23:16:37,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1374 transitions. [2023-03-30 23:16:37,581 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1374 transitions. Word has length 119 [2023-03-30 23:16:37,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:16:37,581 INFO L495 AbstractCegarLoop]: Abstraction has 1009 states and 1374 transitions. [2023-03-30 23:16:37,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:16:37,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1374 transitions. [2023-03-30 23:16:37,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-03-30 23:16:37,584 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:16:37,585 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:16:37,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-03-30 23:16:37,789 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 [2023-03-30 23:16:37,789 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:16:37,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:16:37,790 INFO L85 PathProgramCache]: Analyzing trace with hash 506989828, now seen corresponding path program 1 times [2023-03-30 23:16:37,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:16:37,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108941406] [2023-03-30 23:16:37,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:37,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:16:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:38,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:16:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:38,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:16:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:38,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-03-30 23:16:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:38,139 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-03-30 23:16:38,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:16:38,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108941406] [2023-03-30 23:16:38,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108941406] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:16:38,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983647368] [2023-03-30 23:16:38,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:38,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:16:38,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:16:38,144 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) [2023-03-30 23:16:38,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-30 23:16:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:38,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 15 conjunts are in the unsatisfiable core [2023-03-30 23:16:38,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:16:38,873 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 71 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:16:38,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:16:39,434 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-03-30 23:16:39,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983647368] provided 1 perfect and 1 imperfect interpolant sequences [2023-03-30 23:16:39,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-03-30 23:16:39,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 9] total 12 [2023-03-30 23:16:39,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402536260] [2023-03-30 23:16:39,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:16:39,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:16:39,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:16:39,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:16:39,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:16:39,436 INFO L87 Difference]: Start difference. First operand 1009 states and 1374 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:16:40,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:16:40,006 INFO L93 Difference]: Finished difference Result 2400 states and 3500 transitions. [2023-03-30 23:16:40,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:16:40,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 235 [2023-03-30 23:16:40,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:16:40,012 INFO L225 Difference]: With dead ends: 2400 [2023-03-30 23:16:40,013 INFO L226 Difference]: Without dead ends: 1585 [2023-03-30 23:16:40,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 468 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:16:40,015 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 161 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-30 23:16:40,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 390 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-30 23:16:40,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2023-03-30 23:16:40,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1585. [2023-03-30 23:16:40,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1551 states have (on average 1.3120567375886525) internal successors, (2035), 1565 states have internal predecessors, (2035), 10 states have call successors, (10), 10 states have call predecessors, (10), 23 states have return successors, (84), 9 states have call predecessors, (84), 9 states have call successors, (84) [2023-03-30 23:16:40,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2129 transitions. [2023-03-30 23:16:40,046 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2129 transitions. Word has length 235 [2023-03-30 23:16:40,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:16:40,046 INFO L495 AbstractCegarLoop]: Abstraction has 1585 states and 2129 transitions. [2023-03-30 23:16:40,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:16:40,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2129 transitions. [2023-03-30 23:16:40,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-03-30 23:16:40,049 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:16:40,049 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:16:40,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-30 23:16:40,255 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 [2023-03-30 23:16:40,256 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:16:40,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:16:40,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1782812055, now seen corresponding path program 1 times [2023-03-30 23:16:40,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:16:40,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734305249] [2023-03-30 23:16:40,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:40,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:16:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:40,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:16:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:40,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:16:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:40,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-03-30 23:16:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:40,765 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-03-30 23:16:40,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:16:40,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734305249] [2023-03-30 23:16:40,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734305249] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:16:40,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731811769] [2023-03-30 23:16:40,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:40,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:16:40,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:16:40,770 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) [2023-03-30 23:16:40,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-30 23:16:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:40,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 8 conjunts are in the unsatisfiable core [2023-03-30 23:16:40,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:16:41,079 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-03-30 23:16:41,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:16:41,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731811769] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:16:41,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:16:41,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-03-30 23:16:41,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958667666] [2023-03-30 23:16:41,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:16:41,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:16:41,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:16:41,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:16:41,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-03-30 23:16:41,082 INFO L87 Difference]: Start difference. First operand 1585 states and 2129 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-30 23:16:41,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:16:41,899 INFO L93 Difference]: Finished difference Result 4191 states and 6079 transitions. [2023-03-30 23:16:41,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-30 23:16:41,900 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 246 [2023-03-30 23:16:41,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:16:41,910 INFO L225 Difference]: With dead ends: 4191 [2023-03-30 23:16:41,910 INFO L226 Difference]: Without dead ends: 2800 [2023-03-30 23:16:41,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-03-30 23:16:41,914 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 500 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-30 23:16:41,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 127 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-30 23:16:41,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2800 states. [2023-03-30 23:16:41,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2800 to 2388. [2023-03-30 23:16:41,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2388 states, 2324 states have (on average 1.2603270223752152) internal successors, (2929), 2360 states have internal predecessors, (2929), 14 states have call successors, (14), 14 states have call predecessors, (14), 49 states have return successors, (221), 13 states have call predecessors, (221), 13 states have call successors, (221) [2023-03-30 23:16:41,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 3164 transitions. [2023-03-30 23:16:41,972 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 3164 transitions. Word has length 246 [2023-03-30 23:16:41,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:16:41,972 INFO L495 AbstractCegarLoop]: Abstraction has 2388 states and 3164 transitions. [2023-03-30 23:16:41,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-30 23:16:41,972 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 3164 transitions. [2023-03-30 23:16:41,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2023-03-30 23:16:41,977 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:16:41,977 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:16:41,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-30 23:16:42,182 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 [2023-03-30 23:16:42,183 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:16:42,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:16:42,183 INFO L85 PathProgramCache]: Analyzing trace with hash -608323564, now seen corresponding path program 1 times [2023-03-30 23:16:42,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:16:42,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378918047] [2023-03-30 23:16:42,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:42,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:16:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:42,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:16:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:42,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:16:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:42,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-03-30 23:16:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:42,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-03-30 23:16:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:42,525 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-03-30 23:16:42,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:16:42,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378918047] [2023-03-30 23:16:42,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378918047] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:16:42,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568485421] [2023-03-30 23:16:42,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:42,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:16:42,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:16:42,527 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) [2023-03-30 23:16:42,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-30 23:16:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:42,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:16:42,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:16:42,704 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-03-30 23:16:42,704 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:16:42,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568485421] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:16:42,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:16:42,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-03-30 23:16:42,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102693954] [2023-03-30 23:16:42,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:16:42,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:16:42,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:16:42,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:16:42,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:16:42,707 INFO L87 Difference]: Start difference. First operand 2388 states and 3164 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:16:43,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:16:43,320 INFO L93 Difference]: Finished difference Result 5536 states and 7654 transitions. [2023-03-30 23:16:43,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:16:43,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 319 [2023-03-30 23:16:43,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:16:43,331 INFO L225 Difference]: With dead ends: 5536 [2023-03-30 23:16:43,331 INFO L226 Difference]: Without dead ends: 3342 [2023-03-30 23:16:43,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:16:43,336 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 163 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:16:43,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 385 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-30 23:16:43,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3342 states. [2023-03-30 23:16:43,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3342 to 3342. [2023-03-30 23:16:43,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3342 states, 3261 states have (on average 1.2480834099969333) internal successors, (4070), 3304 states have internal predecessors, (4070), 19 states have call successors, (19), 19 states have call predecessors, (19), 61 states have return successors, (342), 18 states have call predecessors, (342), 18 states have call successors, (342) [2023-03-30 23:16:43,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3342 states to 3342 states and 4431 transitions. [2023-03-30 23:16:43,423 INFO L78 Accepts]: Start accepts. Automaton has 3342 states and 4431 transitions. Word has length 319 [2023-03-30 23:16:43,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:16:43,423 INFO L495 AbstractCegarLoop]: Abstraction has 3342 states and 4431 transitions. [2023-03-30 23:16:43,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:16:43,423 INFO L276 IsEmpty]: Start isEmpty. Operand 3342 states and 4431 transitions. [2023-03-30 23:16:43,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2023-03-30 23:16:43,429 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:16:43,429 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:16:43,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-30 23:16:43,635 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 [2023-03-30 23:16:43,635 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:16:43,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:16:43,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1769980761, now seen corresponding path program 1 times [2023-03-30 23:16:43,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:16:43,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127943003] [2023-03-30 23:16:43,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:43,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:16:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:43,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:16:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:43,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:16:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:43,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-03-30 23:16:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:43,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-03-30 23:16:43,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:43,936 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 276 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-03-30 23:16:43,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:16:43,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127943003] [2023-03-30 23:16:43,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127943003] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:16:43,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124839740] [2023-03-30 23:16:43,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:43,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:16:43,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:16:43,938 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) [2023-03-30 23:16:43,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-30 23:16:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:44,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 7 conjunts are in the unsatisfiable core [2023-03-30 23:16:44,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:16:44,165 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 278 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-03-30 23:16:44,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:16:44,355 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 278 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-03-30 23:16:44,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124839740] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:16:44,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:16:44,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 8 [2023-03-30 23:16:44,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289145603] [2023-03-30 23:16:44,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:16:44,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 23:16:44,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:16:44,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 23:16:44,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:16:44,357 INFO L87 Difference]: Start difference. First operand 3342 states and 4431 transitions. Second operand has 8 states, 8 states have (on average 41.625) internal successors, (333), 6 states have internal predecessors, (333), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 23:16:45,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:16:45,528 INFO L93 Difference]: Finished difference Result 8104 states and 11408 transitions. [2023-03-30 23:16:45,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-30 23:16:45,532 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 41.625) internal successors, (333), 6 states have internal predecessors, (333), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 324 [2023-03-30 23:16:45,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:16:45,567 INFO L225 Difference]: With dead ends: 8104 [2023-03-30 23:16:45,567 INFO L226 Difference]: Without dead ends: 4956 [2023-03-30 23:16:45,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 659 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-03-30 23:16:45,573 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 898 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-30 23:16:45,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 103 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-30 23:16:45,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4956 states. [2023-03-30 23:16:45,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4956 to 4513. [2023-03-30 23:16:45,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4513 states, 4396 states have (on average 1.216105550500455) internal successors, (5346), 4463 states have internal predecessors, (5346), 25 states have call successors, (25), 25 states have call predecessors, (25), 91 states have return successors, (471), 24 states have call predecessors, (471), 24 states have call successors, (471) [2023-03-30 23:16:45,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4513 states to 4513 states and 5842 transitions. [2023-03-30 23:16:45,668 INFO L78 Accepts]: Start accepts. Automaton has 4513 states and 5842 transitions. Word has length 324 [2023-03-30 23:16:45,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:16:45,669 INFO L495 AbstractCegarLoop]: Abstraction has 4513 states and 5842 transitions. [2023-03-30 23:16:45,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 41.625) internal successors, (333), 6 states have internal predecessors, (333), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 23:16:45,669 INFO L276 IsEmpty]: Start isEmpty. Operand 4513 states and 5842 transitions. [2023-03-30 23:16:45,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2023-03-30 23:16:45,675 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:16:45,675 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:16:45,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-03-30 23:16:45,880 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 [2023-03-30 23:16:45,881 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:16:45,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:16:45,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1679121764, now seen corresponding path program 1 times [2023-03-30 23:16:45,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:16:45,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981744977] [2023-03-30 23:16:45,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:45,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:16:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:46,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:16:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:46,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:16:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:46,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-03-30 23:16:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:46,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-03-30 23:16:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:46,334 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 201 proven. 85 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-03-30 23:16:46,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:16:46,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981744977] [2023-03-30 23:16:46,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981744977] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:16:46,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712861289] [2023-03-30 23:16:46,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:46,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:16:46,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:16:46,337 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) [2023-03-30 23:16:46,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-03-30 23:16:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:46,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:16:46,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:16:46,568 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 291 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-03-30 23:16:46,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:16:47,034 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 291 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-03-30 23:16:47,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712861289] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:16:47,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:16:47,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-03-30 23:16:47,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403195776] [2023-03-30 23:16:47,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:16:47,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-30 23:16:47,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:16:47,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-30 23:16:47,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:16:47,036 INFO L87 Difference]: Start difference. First operand 4513 states and 5842 transitions. Second operand has 11 states, 11 states have (on average 38.09090909090909) internal successors, (419), 9 states have internal predecessors, (419), 4 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-30 23:16:49,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:16:49,566 INFO L93 Difference]: Finished difference Result 11867 states and 15808 transitions. [2023-03-30 23:16:49,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-03-30 23:16:49,567 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 38.09090909090909) internal successors, (419), 9 states have internal predecessors, (419), 4 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 337 [2023-03-30 23:16:49,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:16:49,590 INFO L225 Difference]: With dead ends: 11867 [2023-03-30 23:16:49,590 INFO L226 Difference]: Without dead ends: 7352 [2023-03-30 23:16:49,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 703 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=349, Invalid=1543, Unknown=0, NotChecked=0, Total=1892 [2023-03-30 23:16:49,601 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 1956 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 2619 mSolverCounterSat, 622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1956 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 3241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 2619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-03-30 23:16:49,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1956 Valid, 293 Invalid, 3241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [622 Valid, 2619 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-03-30 23:16:49,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7352 states. [2023-03-30 23:16:49,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7352 to 7301. [2023-03-30 23:16:49,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7301 states, 7084 states have (on average 1.162902315076228) internal successors, (8238), 7223 states have internal predecessors, (8238), 39 states have call successors, (39), 39 states have call predecessors, (39), 177 states have return successors, (826), 38 states have call predecessors, (826), 38 states have call successors, (826) [2023-03-30 23:16:49,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7301 states to 7301 states and 9103 transitions. [2023-03-30 23:16:49,782 INFO L78 Accepts]: Start accepts. Automaton has 7301 states and 9103 transitions. Word has length 337 [2023-03-30 23:16:49,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:16:49,782 INFO L495 AbstractCegarLoop]: Abstraction has 7301 states and 9103 transitions. [2023-03-30 23:16:49,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 38.09090909090909) internal successors, (419), 9 states have internal predecessors, (419), 4 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-30 23:16:49,783 INFO L276 IsEmpty]: Start isEmpty. Operand 7301 states and 9103 transitions. [2023-03-30 23:16:49,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2023-03-30 23:16:49,793 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:16:49,793 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:16:49,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-03-30 23:16:50,000 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 [2023-03-30 23:16:50,001 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:16:50,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:16:50,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1752966097, now seen corresponding path program 1 times [2023-03-30 23:16:50,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:16:50,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483145808] [2023-03-30 23:16:50,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:50,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:16:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:50,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:16:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:50,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:16:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:50,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-03-30 23:16:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:50,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-03-30 23:16:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:50,288 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2023-03-30 23:16:50,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:16:50,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483145808] [2023-03-30 23:16:50,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483145808] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:16:50,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:16:50,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-30 23:16:50,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501631383] [2023-03-30 23:16:50,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:16:50,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:16:50,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:16:50,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:16:50,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:16:50,290 INFO L87 Difference]: Start difference. First operand 7301 states and 9103 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 3 states have internal predecessors, (171), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-30 23:16:50,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:16:50,957 INFO L93 Difference]: Finished difference Result 14403 states and 18013 transitions. [2023-03-30 23:16:50,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-30 23:16:50,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 3 states have internal predecessors, (171), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 371 [2023-03-30 23:16:50,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:16:50,975 INFO L225 Difference]: With dead ends: 14403 [2023-03-30 23:16:50,975 INFO L226 Difference]: Without dead ends: 7296 [2023-03-30 23:16:50,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:16:50,986 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 542 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:16:50,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 47 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-30 23:16:50,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7296 states. [2023-03-30 23:16:51,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7296 to 7290. [2023-03-30 23:16:51,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7290 states, 7076 states have (on average 1.1623798756359525) internal successors, (8225), 7212 states have internal predecessors, (8225), 39 states have call successors, (39), 39 states have call predecessors, (39), 174 states have return successors, (815), 38 states have call predecessors, (815), 38 states have call successors, (815) [2023-03-30 23:16:51,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7290 states to 7290 states and 9079 transitions. [2023-03-30 23:16:51,112 INFO L78 Accepts]: Start accepts. Automaton has 7290 states and 9079 transitions. Word has length 371 [2023-03-30 23:16:51,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:16:51,112 INFO L495 AbstractCegarLoop]: Abstraction has 7290 states and 9079 transitions. [2023-03-30 23:16:51,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 3 states have internal predecessors, (171), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-30 23:16:51,113 INFO L276 IsEmpty]: Start isEmpty. Operand 7290 states and 9079 transitions. [2023-03-30 23:16:51,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2023-03-30 23:16:51,124 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:16:51,124 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:16:51,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-30 23:16:51,125 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:16:51,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:16:51,125 INFO L85 PathProgramCache]: Analyzing trace with hash -687186647, now seen corresponding path program 1 times [2023-03-30 23:16:51,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:16:51,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251631206] [2023-03-30 23:16:51,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:51,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:16:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:51,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:16:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:51,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:16:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:51,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-03-30 23:16:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:51,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-03-30 23:16:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:51,930 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 318 proven. 6 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-03-30 23:16:51,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:16:51,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251631206] [2023-03-30 23:16:51,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251631206] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:16:51,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418232989] [2023-03-30 23:16:51,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:51,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:16:51,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:16:51,932 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) [2023-03-30 23:16:51,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-03-30 23:16:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:52,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-30 23:16:52,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:16:52,186 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-03-30 23:16:52,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:16:52,458 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-03-30 23:16:52,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418232989] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:16:52,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:16:52,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-03-30 23:16:52,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559453836] [2023-03-30 23:16:52,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:16:52,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-03-30 23:16:52,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:16:52,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-03-30 23:16:52,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-03-30 23:16:52,462 INFO L87 Difference]: Start difference. First operand 7290 states and 9079 transitions. Second operand has 14 states, 14 states have (on average 34.857142857142854) internal successors, (488), 12 states have internal predecessors, (488), 6 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2023-03-30 23:16:55,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:16:55,459 INFO L93 Difference]: Finished difference Result 18445 states and 23220 transitions. [2023-03-30 23:16:55,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-03-30 23:16:55,460 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 34.857142857142854) internal successors, (488), 12 states have internal predecessors, (488), 6 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 382 [2023-03-30 23:16:55,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:16:55,486 INFO L225 Difference]: With dead ends: 18445 [2023-03-30 23:16:55,486 INFO L226 Difference]: Without dead ends: 11349 [2023-03-30 23:16:55,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 780 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=706, Unknown=0, NotChecked=0, Total=930 [2023-03-30 23:16:55,500 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 1487 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 4154 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 4422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 4154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:16:55,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 298 Invalid, 4422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 4154 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-03-30 23:16:55,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11349 states. [2023-03-30 23:16:55,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11349 to 10938. [2023-03-30 23:16:55,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10938 states, 10654 states have (on average 1.1315937675990237) internal successors, (12056), 10822 states have internal predecessors, (12056), 58 states have call successors, (58), 58 states have call predecessors, (58), 225 states have return successors, (1104), 57 states have call predecessors, (1104), 57 states have call successors, (1104) [2023-03-30 23:16:55,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10938 states to 10938 states and 13218 transitions. [2023-03-30 23:16:55,748 INFO L78 Accepts]: Start accepts. Automaton has 10938 states and 13218 transitions. Word has length 382 [2023-03-30 23:16:55,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:16:55,748 INFO L495 AbstractCegarLoop]: Abstraction has 10938 states and 13218 transitions. [2023-03-30 23:16:55,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 34.857142857142854) internal successors, (488), 12 states have internal predecessors, (488), 6 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2023-03-30 23:16:55,749 INFO L276 IsEmpty]: Start isEmpty. Operand 10938 states and 13218 transitions. [2023-03-30 23:16:55,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2023-03-30 23:16:55,760 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:16:55,761 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:16:55,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-03-30 23:16:55,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:16:55,967 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:16:55,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:16:55,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1658370627, now seen corresponding path program 1 times [2023-03-30 23:16:55,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:16:55,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828324934] [2023-03-30 23:16:55,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:55,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:16:56,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:56,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:16:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:56,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:16:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:56,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-03-30 23:16:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:56,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-03-30 23:16:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:56,394 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 244 proven. 89 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-03-30 23:16:56,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:16:56,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828324934] [2023-03-30 23:16:56,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828324934] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:16:56,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599638088] [2023-03-30 23:16:56,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:56,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:16:56,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:16:56,395 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) [2023-03-30 23:16:56,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-03-30 23:16:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:56,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:16:56,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:16:56,755 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 382 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-03-30 23:16:56,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:16:57,169 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 245 proven. 90 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-03-30 23:16:57,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599638088] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:16:57,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:16:57,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-03-30 23:16:57,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123296232] [2023-03-30 23:16:57,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:16:57,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-30 23:16:57,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:16:57,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-30 23:16:57,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:16:57,172 INFO L87 Difference]: Start difference. First operand 10938 states and 13218 transitions. Second operand has 11 states, 11 states have (on average 61.09090909090909) internal successors, (672), 9 states have internal predecessors, (672), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-30 23:16:58,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:16:58,989 INFO L93 Difference]: Finished difference Result 23500 states and 28643 transitions. [2023-03-30 23:16:58,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-03-30 23:16:58,990 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 61.09090909090909) internal successors, (672), 9 states have internal predecessors, (672), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 418 [2023-03-30 23:16:58,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:16:59,015 INFO L225 Difference]: With dead ends: 23500 [2023-03-30 23:16:59,015 INFO L226 Difference]: Without dead ends: 12946 [2023-03-30 23:16:59,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 865 GetRequests, 845 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2023-03-30 23:16:59,027 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 906 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2473 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 2865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 2473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-03-30 23:16:59,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 171 Invalid, 2865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 2473 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-03-30 23:16:59,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12946 states. [2023-03-30 23:16:59,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12946 to 12912. [2023-03-30 23:16:59,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12912 states, 12571 states have (on average 1.1199586349534643) internal successors, (14079), 12776 states have internal predecessors, (14079), 68 states have call successors, (68), 68 states have call predecessors, (68), 272 states have return successors, (1251), 67 states have call predecessors, (1251), 67 states have call successors, (1251) [2023-03-30 23:16:59,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12912 states to 12912 states and 15398 transitions. [2023-03-30 23:16:59,221 INFO L78 Accepts]: Start accepts. Automaton has 12912 states and 15398 transitions. Word has length 418 [2023-03-30 23:16:59,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:16:59,222 INFO L495 AbstractCegarLoop]: Abstraction has 12912 states and 15398 transitions. [2023-03-30 23:16:59,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 61.09090909090909) internal successors, (672), 9 states have internal predecessors, (672), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-30 23:16:59,222 INFO L276 IsEmpty]: Start isEmpty. Operand 12912 states and 15398 transitions. [2023-03-30 23:16:59,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2023-03-30 23:16:59,236 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:16:59,236 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:16:59,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-03-30 23:16:59,441 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,SelfDestructingSolverStorable9 [2023-03-30 23:16:59,442 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:16:59,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:16:59,442 INFO L85 PathProgramCache]: Analyzing trace with hash -290698353, now seen corresponding path program 1 times [2023-03-30 23:16:59,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:16:59,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145929976] [2023-03-30 23:16:59,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:59,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:16:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:59,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:16:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:59,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:16:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:59,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-03-30 23:16:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:59,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-03-30 23:16:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:59,873 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-03-30 23:16:59,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:16:59,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145929976] [2023-03-30 23:16:59,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145929976] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:16:59,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232498136] [2023-03-30 23:16:59,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:59,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:16:59,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:16:59,875 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) [2023-03-30 23:16:59,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-03-30 23:17:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:00,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:17:00,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:17:00,146 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 362 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-03-30 23:17:00,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:17:00,477 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 362 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-03-30 23:17:00,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232498136] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:17:00,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:17:00,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-03-30 23:17:00,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507857887] [2023-03-30 23:17:00,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:17:00,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-30 23:17:00,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:17:00,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-30 23:17:00,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:17:00,481 INFO L87 Difference]: Start difference. First operand 12912 states and 15398 transitions. Second operand has 11 states, 11 states have (on average 52.54545454545455) internal successors, (578), 9 states have internal predecessors, (578), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-03-30 23:17:02,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:17:02,022 INFO L93 Difference]: Finished difference Result 28131 states and 34254 transitions. [2023-03-30 23:17:02,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-03-30 23:17:02,022 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 52.54545454545455) internal successors, (578), 9 states have internal predecessors, (578), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 429 [2023-03-30 23:17:02,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:17:02,054 INFO L225 Difference]: With dead ends: 28131 [2023-03-30 23:17:02,054 INFO L226 Difference]: Without dead ends: 14825 [2023-03-30 23:17:02,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 868 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-03-30 23:17:02,072 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 1421 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 1889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-30 23:17:02,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1421 Valid, 173 Invalid, 1889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 1575 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-30 23:17:02,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14825 states. [2023-03-30 23:17:02,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14825 to 14346. [2023-03-30 23:17:02,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14346 states, 13951 states have (on average 1.1159773492939575) internal successors, (15569), 14196 states have internal predecessors, (15569), 75 states have call successors, (75), 75 states have call predecessors, (75), 319 states have return successors, (1467), 74 states have call predecessors, (1467), 74 states have call successors, (1467) [2023-03-30 23:17:02,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14346 states to 14346 states and 17111 transitions. [2023-03-30 23:17:02,290 INFO L78 Accepts]: Start accepts. Automaton has 14346 states and 17111 transitions. Word has length 429 [2023-03-30 23:17:02,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:17:02,291 INFO L495 AbstractCegarLoop]: Abstraction has 14346 states and 17111 transitions. [2023-03-30 23:17:02,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 52.54545454545455) internal successors, (578), 9 states have internal predecessors, (578), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-03-30 23:17:02,291 INFO L276 IsEmpty]: Start isEmpty. Operand 14346 states and 17111 transitions. [2023-03-30 23:17:02,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2023-03-30 23:17:02,312 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:17:02,312 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:17:02,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-03-30 23:17:02,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:17:02,517 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:17:02,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:17:02,518 INFO L85 PathProgramCache]: Analyzing trace with hash 2139427340, now seen corresponding path program 1 times [2023-03-30 23:17:02,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:17:02,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016528828] [2023-03-30 23:17:02,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:17:02,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:17:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:02,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:17:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:02,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:17:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:02,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-03-30 23:17:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:03,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-03-30 23:17:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:03,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2023-03-30 23:17:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:03,081 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 264 proven. 193 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2023-03-30 23:17:03,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:17:03,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016528828] [2023-03-30 23:17:03,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016528828] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:17:03,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34057627] [2023-03-30 23:17:03,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:17:03,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:17:03,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:17:03,082 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) [2023-03-30 23:17:03,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-03-30 23:17:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:03,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 9 conjunts are in the unsatisfiable core [2023-03-30 23:17:03,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:17:03,474 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 491 proven. 106 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-03-30 23:17:03,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:17:03,772 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 265 proven. 195 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-03-30 23:17:03,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34057627] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:17:03,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:17:03,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 12 [2023-03-30 23:17:03,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565059831] [2023-03-30 23:17:03,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:17:03,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-30 23:17:03,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:17:03,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-30 23:17:03,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:17:03,774 INFO L87 Difference]: Start difference. First operand 14346 states and 17111 transitions. Second operand has 12 states, 12 states have (on average 62.833333333333336) internal successors, (754), 10 states have internal predecessors, (754), 5 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-03-30 23:17:06,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:17:06,134 INFO L93 Difference]: Finished difference Result 36266 states and 44652 transitions. [2023-03-30 23:17:06,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-03-30 23:17:06,135 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 62.833333333333336) internal successors, (754), 10 states have internal predecessors, (754), 5 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 525 [2023-03-30 23:17:06,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:17:06,191 INFO L225 Difference]: With dead ends: 36266 [2023-03-30 23:17:06,191 INFO L226 Difference]: Without dead ends: 22304 [2023-03-30 23:17:06,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1102 GetRequests, 1072 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930 [2023-03-30 23:17:06,216 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 3548 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 777 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3548 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 2562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 777 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-03-30 23:17:06,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3548 Valid, 143 Invalid, 2562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [777 Valid, 1785 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-03-30 23:17:06,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22304 states. [2023-03-30 23:17:06,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22304 to 22063. [2023-03-30 23:17:06,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22063 states, 21497 states have (on average 1.113132064939294) internal successors, (23929), 21833 states have internal predecessors, (23929), 115 states have call successors, (115), 115 states have call predecessors, (115), 450 states have return successors, (2314), 114 states have call predecessors, (2314), 114 states have call successors, (2314) [2023-03-30 23:17:06,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22063 states to 22063 states and 26358 transitions. [2023-03-30 23:17:06,648 INFO L78 Accepts]: Start accepts. Automaton has 22063 states and 26358 transitions. Word has length 525 [2023-03-30 23:17:06,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:17:06,648 INFO L495 AbstractCegarLoop]: Abstraction has 22063 states and 26358 transitions. [2023-03-30 23:17:06,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 62.833333333333336) internal successors, (754), 10 states have internal predecessors, (754), 5 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-03-30 23:17:06,649 INFO L276 IsEmpty]: Start isEmpty. Operand 22063 states and 26358 transitions. [2023-03-30 23:17:06,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-03-30 23:17:06,676 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:17:06,676 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:17:06,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-03-30 23:17:06,882 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,SelfDestructingSolverStorable11 [2023-03-30 23:17:06,882 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:17:06,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:17:06,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1431292009, now seen corresponding path program 1 times [2023-03-30 23:17:06,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:17:06,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65606103] [2023-03-30 23:17:06,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:17:06,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:17:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:07,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:17:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:07,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:17:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:07,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-03-30 23:17:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:07,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-03-30 23:17:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:07,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2023-03-30 23:17:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:07,771 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 169 proven. 338 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-03-30 23:17:07,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:17:07,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65606103] [2023-03-30 23:17:07,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65606103] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:17:07,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177572323] [2023-03-30 23:17:07,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:17:07,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:17:07,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:17:07,773 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:17:07,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-03-30 23:17:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:07,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:17:07,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:17:08,002 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2023-03-30 23:17:08,002 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:17:08,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177572323] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:17:08,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:17:08,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-03-30 23:17:08,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404374762] [2023-03-30 23:17:08,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:17:08,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:17:08,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:17:08,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:17:08,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:17:08,005 INFO L87 Difference]: Start difference. First operand 22063 states and 26358 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:17:08,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:17:08,642 INFO L93 Difference]: Finished difference Result 24363 states and 29182 transitions. [2023-03-30 23:17:08,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:17:08,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 531 [2023-03-30 23:17:08,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:17:08,684 INFO L225 Difference]: With dead ends: 24363 [2023-03-30 23:17:08,684 INFO L226 Difference]: Without dead ends: 24361 [2023-03-30 23:17:08,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:17:08,694 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 185 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-30 23:17:08,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 146 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-30 23:17:08,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24361 states. [2023-03-30 23:17:08,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24361 to 23797. [2023-03-30 23:17:09,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23797 states, 23192 states have (on average 1.1131424629182476) internal successors, (25816), 23549 states have internal predecessors, (25816), 124 states have call successors, (124), 124 states have call predecessors, (124), 480 states have return successors, (2554), 123 states have call predecessors, (2554), 123 states have call successors, (2554) [2023-03-30 23:17:09,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23797 states to 23797 states and 28494 transitions. [2023-03-30 23:17:09,037 INFO L78 Accepts]: Start accepts. Automaton has 23797 states and 28494 transitions. Word has length 531 [2023-03-30 23:17:09,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:17:09,037 INFO L495 AbstractCegarLoop]: Abstraction has 23797 states and 28494 transitions. [2023-03-30 23:17:09,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:17:09,038 INFO L276 IsEmpty]: Start isEmpty. Operand 23797 states and 28494 transitions. [2023-03-30 23:17:09,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-03-30 23:17:09,066 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:17:09,067 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:17:09,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-03-30 23:17:09,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-03-30 23:17:09,273 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:17:09,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:17:09,274 INFO L85 PathProgramCache]: Analyzing trace with hash 654246454, now seen corresponding path program 1 times [2023-03-30 23:17:09,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:17:09,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898714593] [2023-03-30 23:17:09,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:17:09,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:17:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:10,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:17:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:10,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:17:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:10,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-03-30 23:17:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:10,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-03-30 23:17:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:10,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2023-03-30 23:17:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:10,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2023-03-30 23:17:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:10,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1267 backedges. 757 proven. 79 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2023-03-30 23:17:10,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:17:10,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898714593] [2023-03-30 23:17:10,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898714593] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:17:10,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101882591] [2023-03-30 23:17:10,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:17:10,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:17:10,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:17:10,343 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:17:10,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-03-30 23:17:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:17:10,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:17:10,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:17:10,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1267 backedges. 971 proven. 2 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2023-03-30 23:17:10,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:17:11,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1267 backedges. 421 proven. 195 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2023-03-30 23:17:11,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101882591] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:17:11,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:17:11,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2023-03-30 23:17:11,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396897948] [2023-03-30 23:17:11,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:17:11,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-30 23:17:11,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:17:11,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-30 23:17:11,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:17:11,217 INFO L87 Difference]: Start difference. First operand 23797 states and 28494 transitions. Second operand has 12 states, 12 states have (on average 59.416666666666664) internal successors, (713), 10 states have internal predecessors, (713), 5 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-03-30 23:17:15,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:17:15,116 INFO L93 Difference]: Finished difference Result 57750 states and 69095 transitions. [2023-03-30 23:17:15,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-03-30 23:17:15,117 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 59.416666666666664) internal successors, (713), 10 states have internal predecessors, (713), 5 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 663 [2023-03-30 23:17:15,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:17:15,117 INFO L225 Difference]: With dead ends: 57750 [2023-03-30 23:17:15,117 INFO L226 Difference]: Without dead ends: 0 [2023-03-30 23:17:15,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1416 GetRequests, 1365 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=2022, Unknown=0, NotChecked=0, Total=2550 [2023-03-30 23:17:15,159 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 1755 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 5195 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1758 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 5768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 5195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-03-30 23:17:15,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1758 Valid, 314 Invalid, 5768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 5195 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-03-30 23:17:15,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-03-30 23:17:15,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-03-30 23:17:15,160 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) [2023-03-30 23:17:15,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-03-30 23:17:15,160 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 663 [2023-03-30 23:17:15,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:17:15,160 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-03-30 23:17:15,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 59.416666666666664) internal successors, (713), 10 states have internal predecessors, (713), 5 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-03-30 23:17:15,161 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-03-30 23:17:15,161 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-03-30 23:17:15,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-30 23:17:15,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-03-30 23:17:15,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-03-30 23:17:15,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.