/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/Problem16_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 23:35:57,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 23:35:57,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 23:35:57,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-30 23:35:57,473 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 23:35:57,501 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 23:35:57,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 23:35:57,502 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 23:35:57,502 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 23:35:57,503 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 23:35:57,503 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 23:35:57,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 23:35:57,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 23:35:57,504 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 23:35:57,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 23:35:57,505 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 23:35:57,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 23:35:57,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 23:35:57,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 23:35:57,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 23:35:57,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 23:35:57,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 23:35:57,506 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 23:35:57,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 23:35:57,506 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 23:35:57,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 23:35:57,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 23:35:57,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 23:35:57,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 23:35:57,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:35:57,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 23:35:57,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 23:35:57,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 23:35:57,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 23:35:57,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 23:35:57,508 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 23:35:57,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 23:35:57,509 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 23:35:57,509 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 23:35:57,509 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 23:35:57,509 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 23:35:57,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 23:35:57,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 23:35:57,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 23:35:57,755 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 23:35:57,756 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 23:35:57,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem16_label21.c [2023-03-30 23:35:58,913 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 23:35:59,196 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 23:35:59,197 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label21.c [2023-03-30 23:35:59,216 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e9d4d0b7/f33abc55fa53499da24c9f1795aaaaba/FLAGa373f841f [2023-03-30 23:35:59,231 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e9d4d0b7/f33abc55fa53499da24c9f1795aaaaba [2023-03-30 23:35:59,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 23:35:59,235 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 23:35:59,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 23:35:59,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 23:35:59,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 23:35:59,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:35:59" (1/1) ... [2023-03-30 23:35:59,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@311ebaa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:35:59, skipping insertion in model container [2023-03-30 23:35:59,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:35:59" (1/1) ... [2023-03-30 23:35:59,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 23:35:59,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 23:35:59,480 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/Problem16_label21.c[4121,4134] [2023-03-30 23:35:59,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:35:59,844 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 23:35:59,869 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/Problem16_label21.c[4121,4134] [2023-03-30 23:36:00,015 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:36:00,031 INFO L208 MainTranslator]: Completed translation [2023-03-30 23:36:00,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:36:00 WrapperNode [2023-03-30 23:36:00,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 23:36:00,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 23:36:00,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 23:36:00,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 23:36:00,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:36:00" (1/1) ... [2023-03-30 23:36:00,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:36:00" (1/1) ... [2023-03-30 23:36:00,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:36:00" (1/1) ... [2023-03-30 23:36:00,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:36:00" (1/1) ... [2023-03-30 23:36:00,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:36:00" (1/1) ... [2023-03-30 23:36:00,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:36:00" (1/1) ... [2023-03-30 23:36:00,205 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:36:00" (1/1) ... [2023-03-30 23:36:00,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:36:00" (1/1) ... [2023-03-30 23:36:00,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 23:36:00,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 23:36:00,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 23:36:00,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 23:36:00,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:36:00" (1/1) ... [2023-03-30 23:36:00,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:36:00,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:36:00,266 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 23:36:00,289 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 23:36:00,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 23:36:00,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 23:36:00,311 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 23:36:00,311 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-30 23:36:00,311 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-03-30 23:36:00,311 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 23:36:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-30 23:36:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-03-30 23:36:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 23:36:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 23:36:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 23:36:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 23:36:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 23:36:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-30 23:36:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 23:36:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 23:36:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 23:36:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 23:36:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 23:36:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 23:36:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 23:36:00,392 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 23:36:00,394 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 23:36:02,206 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 23:36:02,223 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 23:36:02,223 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-30 23:36:02,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:36:02 BoogieIcfgContainer [2023-03-30 23:36:02,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 23:36:02,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 23:36:02,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 23:36:02,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 23:36:02,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 11:35:59" (1/3) ... [2023-03-30 23:36:02,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0dd939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:36:02, skipping insertion in model container [2023-03-30 23:36:02,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:36:00" (2/3) ... [2023-03-30 23:36:02,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0dd939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:36:02, skipping insertion in model container [2023-03-30 23:36:02,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:36:02" (3/3) ... [2023-03-30 23:36:02,235 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label21.c [2023-03-30 23:36:02,251 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 23:36:02,251 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 23:36:02,321 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 23:36:02,328 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;@326e9acf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 23:36:02,329 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 23:36:02,334 INFO L276 IsEmpty]: Start isEmpty. Operand has 409 states, 399 states have (on average 1.8245614035087718) internal successors, (728), 400 states have internal predecessors, (728), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 23:36:02,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-03-30 23:36:02,342 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:36:02,343 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] [2023-03-30 23:36:02,344 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:36:02,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:36:02,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1035807015, now seen corresponding path program 1 times [2023-03-30 23:36:02,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:36:02,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270975173] [2023-03-30 23:36:02,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:36:02,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:36:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:02,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:36:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:02,819 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 23:36:02,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:36:02,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270975173] [2023-03-30 23:36:02,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270975173] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:36:02,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:36:02,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-30 23:36:02,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636157288] [2023-03-30 23:36:02,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:36:02,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-30 23:36:02,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:36:02,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-30 23:36:02,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-30 23:36:02,877 INFO L87 Difference]: Start difference. First operand has 409 states, 399 states have (on average 1.8245614035087718) internal successors, (728), 400 states have internal predecessors, (728), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 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 23:36:05,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:36:05,646 INFO L93 Difference]: Finished difference Result 1184 states and 2180 transitions. [2023-03-30 23:36:05,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-30 23:36:05,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 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 44 [2023-03-30 23:36:05,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:36:05,668 INFO L225 Difference]: With dead ends: 1184 [2023-03-30 23:36:05,668 INFO L226 Difference]: Without dead ends: 696 [2023-03-30 23:36:05,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:36:05,678 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 1119 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 1850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-03-30 23:36:05,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1119 Valid, 26 Invalid, 1850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 1410 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-03-30 23:36:05,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-03-30 23:36:05,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 689. [2023-03-30 23:36:05,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 674 states have (on average 1.6869436201780414) internal successors, (1137), 676 states have internal predecessors, (1137), 6 states have call successors, (6), 6 states have call predecessors, (6), 8 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-03-30 23:36:05,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1155 transitions. [2023-03-30 23:36:05,769 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1155 transitions. Word has length 44 [2023-03-30 23:36:05,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:36:05,770 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 1155 transitions. [2023-03-30 23:36:05,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 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 23:36:05,770 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1155 transitions. [2023-03-30 23:36:05,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-03-30 23:36:05,774 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:36:05,774 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:36:05,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 23:36:05,775 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:36:05,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:36:05,775 INFO L85 PathProgramCache]: Analyzing trace with hash 672531652, now seen corresponding path program 1 times [2023-03-30 23:36:05,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:36:05,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676117499] [2023-03-30 23:36:05,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:36:05,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:36:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:06,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:36:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:06,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:36:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:06,191 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:36:06,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:36:06,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676117499] [2023-03-30 23:36:06,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676117499] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:36:06,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:36:06,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-30 23:36:06,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559562925] [2023-03-30 23:36:06,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:36:06,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 23:36:06,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:36:06,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 23:36:06,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:36:06,201 INFO L87 Difference]: Start difference. First operand 689 states and 1155 transitions. Second operand has 8 states, 7 states have (on average 15.428571428571429) internal successors, (108), 5 states have internal predecessors, (108), 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 23:36:08,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:36:08,588 INFO L93 Difference]: Finished difference Result 2094 states and 3563 transitions. [2023-03-30 23:36:08,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-30 23:36:08,597 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 15.428571428571429) internal successors, (108), 5 states have internal predecessors, (108), 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 114 [2023-03-30 23:36:08,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:36:08,609 INFO L225 Difference]: With dead ends: 2094 [2023-03-30 23:36:08,609 INFO L226 Difference]: Without dead ends: 1411 [2023-03-30 23:36:08,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-03-30 23:36:08,618 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 2483 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 2166 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2483 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 2670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 2166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-03-30 23:36:08,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2483 Valid, 65 Invalid, 2670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 2166 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-03-30 23:36:08,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2023-03-30 23:36:08,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1384. [2023-03-30 23:36:08,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1352 states have (on average 1.6050295857988166) internal successors, (2170), 1360 states have internal predecessors, (2170), 10 states have call successors, (10), 10 states have call predecessors, (10), 21 states have return successors, (48), 13 states have call predecessors, (48), 9 states have call successors, (48) [2023-03-30 23:36:08,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2228 transitions. [2023-03-30 23:36:08,707 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2228 transitions. Word has length 114 [2023-03-30 23:36:08,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:36:08,709 INFO L495 AbstractCegarLoop]: Abstraction has 1384 states and 2228 transitions. [2023-03-30 23:36:08,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 15.428571428571429) internal successors, (108), 5 states have internal predecessors, (108), 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 23:36:08,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2228 transitions. [2023-03-30 23:36:08,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-03-30 23:36:08,716 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:36:08,716 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:36:08,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-30 23:36:08,717 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:36:08,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:36:08,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1664397283, now seen corresponding path program 1 times [2023-03-30 23:36:08,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:36:08,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544224425] [2023-03-30 23:36:08,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:36:08,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:36:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:08,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:36:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:08,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:36:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:09,011 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:36:09,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:36:09,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544224425] [2023-03-30 23:36:09,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544224425] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:36:09,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:36:09,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-30 23:36:09,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434091055] [2023-03-30 23:36:09,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:36:09,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-30 23:36:09,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:36:09,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-30 23:36:09,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:36:09,014 INFO L87 Difference]: Start difference. First operand 1384 states and 2228 transitions. Second operand has 7 states, 6 states have (on average 18.166666666666668) internal successors, (109), 4 states have internal predecessors, (109), 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 23:36:11,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:36:11,271 INFO L93 Difference]: Finished difference Result 3492 states and 5644 transitions. [2023-03-30 23:36:11,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-30 23:36:11,277 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 18.166666666666668) internal successors, (109), 4 states have internal predecessors, (109), 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 115 [2023-03-30 23:36:11,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:36:11,288 INFO L225 Difference]: With dead ends: 3492 [2023-03-30 23:36:11,288 INFO L226 Difference]: Without dead ends: 2114 [2023-03-30 23:36:11,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:36:11,298 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1338 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 2009 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 2486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 2009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-03-30 23:36:11,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1338 Valid, 58 Invalid, 2486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 2009 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-03-30 23:36:11,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2114 states. [2023-03-30 23:36:11,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 2092. [2023-03-30 23:36:11,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2038 states have (on average 1.3223748773307165) internal successors, (2695), 2054 states have internal predecessors, (2695), 14 states have call successors, (14), 14 states have call predecessors, (14), 39 states have return successors, (90), 23 states have call predecessors, (90), 13 states have call successors, (90) [2023-03-30 23:36:11,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 2799 transitions. [2023-03-30 23:36:11,367 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 2799 transitions. Word has length 115 [2023-03-30 23:36:11,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:36:11,369 INFO L495 AbstractCegarLoop]: Abstraction has 2092 states and 2799 transitions. [2023-03-30 23:36:11,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 18.166666666666668) internal successors, (109), 4 states have internal predecessors, (109), 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 23:36:11,369 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 2799 transitions. [2023-03-30 23:36:11,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-03-30 23:36:11,375 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:36:11,375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:36:11,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-30 23:36:11,376 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:36:11,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:36:11,376 INFO L85 PathProgramCache]: Analyzing trace with hash -986786581, now seen corresponding path program 1 times [2023-03-30 23:36:11,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:36:11,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293378785] [2023-03-30 23:36:11,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:36:11,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:36:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:11,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:36:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:11,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:36:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:11,835 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:36:11,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:36:11,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293378785] [2023-03-30 23:36:11,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293378785] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:36:11,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:36:11,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-30 23:36:11,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476866472] [2023-03-30 23:36:11,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:36:11,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 23:36:11,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:36:11,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 23:36:11,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:36:11,839 INFO L87 Difference]: Start difference. First operand 2092 states and 2799 transitions. Second operand has 8 states, 7 states have (on average 28.714285714285715) internal successors, (201), 5 states have internal predecessors, (201), 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 23:36:15,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:36:15,171 INFO L93 Difference]: Finished difference Result 8365 states and 11560 transitions. [2023-03-30 23:36:15,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-03-30 23:36:15,172 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 28.714285714285715) internal successors, (201), 5 states have internal predecessors, (201), 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 207 [2023-03-30 23:36:15,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:36:15,196 INFO L225 Difference]: With dead ends: 8365 [2023-03-30 23:36:15,196 INFO L226 Difference]: Without dead ends: 6279 [2023-03-30 23:36:15,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2023-03-30 23:36:15,206 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 2824 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 2679 mSolverCounterSat, 743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2824 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 3422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 743 IncrementalHoareTripleChecker+Valid, 2679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-03-30 23:36:15,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2824 Valid, 67 Invalid, 3422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [743 Valid, 2679 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-03-30 23:36:15,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6279 states. [2023-03-30 23:36:15,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6279 to 6265. [2023-03-30 23:36:15,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6265 states, 6105 states have (on average 1.2324324324324325) internal successors, (7524), 6166 states have internal predecessors, (7524), 38 states have call successors, (38), 38 states have call predecessors, (38), 121 states have return successors, (503), 60 states have call predecessors, (503), 37 states have call successors, (503) [2023-03-30 23:36:15,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6265 states to 6265 states and 8065 transitions. [2023-03-30 23:36:15,374 INFO L78 Accepts]: Start accepts. Automaton has 6265 states and 8065 transitions. Word has length 207 [2023-03-30 23:36:15,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:36:15,375 INFO L495 AbstractCegarLoop]: Abstraction has 6265 states and 8065 transitions. [2023-03-30 23:36:15,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 28.714285714285715) internal successors, (201), 5 states have internal predecessors, (201), 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 23:36:15,376 INFO L276 IsEmpty]: Start isEmpty. Operand 6265 states and 8065 transitions. [2023-03-30 23:36:15,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-03-30 23:36:15,380 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:36:15,380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:36:15,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-30 23:36:15,380 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:36:15,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:36:15,381 INFO L85 PathProgramCache]: Analyzing trace with hash 818477443, now seen corresponding path program 1 times [2023-03-30 23:36:15,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:36:15,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426744165] [2023-03-30 23:36:15,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:36:15,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:36:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:15,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:36:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:15,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:36:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:15,969 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-03-30 23:36:15,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:36:15,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426744165] [2023-03-30 23:36:15,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426744165] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:36:15,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748600856] [2023-03-30 23:36:15,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:36:15,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:36:15,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:36:15,981 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 23:36:16,006 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 23:36:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:16,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:36:16,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:36:16,294 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:36:16,294 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:36:16,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748600856] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:36:16,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:36:16,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2023-03-30 23:36:16,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798522550] [2023-03-30 23:36:16,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:36:16,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:36:16,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:36:16,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:36:16,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:36:16,297 INFO L87 Difference]: Start difference. First operand 6265 states and 8065 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 23:36:17,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:36:17,487 INFO L93 Difference]: Finished difference Result 8291 states and 10375 transitions. [2023-03-30 23:36:17,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:36:17,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 291 [2023-03-30 23:36:17,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:36:17,523 INFO L225 Difference]: With dead ends: 8291 [2023-03-30 23:36:17,523 INFO L226 Difference]: Without dead ends: 8289 [2023-03-30 23:36:17,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:36:17,529 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 325 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-30 23:36:17,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 182 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-30 23:36:17,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8289 states. [2023-03-30 23:36:17,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8289 to 7278. [2023-03-30 23:36:17,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7278 states, 7105 states have (on average 1.2153413089373681) internal successors, (8635), 7167 states have internal predecessors, (8635), 44 states have call successors, (44), 44 states have call predecessors, (44), 128 states have return successors, (559), 66 states have call predecessors, (559), 43 states have call successors, (559) [2023-03-30 23:36:17,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7278 states to 7278 states and 9238 transitions. [2023-03-30 23:36:17,732 INFO L78 Accepts]: Start accepts. Automaton has 7278 states and 9238 transitions. Word has length 291 [2023-03-30 23:36:17,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:36:17,733 INFO L495 AbstractCegarLoop]: Abstraction has 7278 states and 9238 transitions. [2023-03-30 23:36:17,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 23:36:17,733 INFO L276 IsEmpty]: Start isEmpty. Operand 7278 states and 9238 transitions. [2023-03-30 23:36:17,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2023-03-30 23:36:17,740 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:36:17,740 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:36:17,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-30 23:36:17,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:36:17,947 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:36:17,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:36:17,947 INFO L85 PathProgramCache]: Analyzing trace with hash 598513293, now seen corresponding path program 1 times [2023-03-30 23:36:17,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:36:17,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377697731] [2023-03-30 23:36:17,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:36:17,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:36:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:18,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:36:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:18,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:36:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:18,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-03-30 23:36:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:18,476 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-30 23:36:18,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:36:18,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377697731] [2023-03-30 23:36:18,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377697731] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:36:18,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364201750] [2023-03-30 23:36:18,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:36:18,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:36:18,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:36:18,481 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 23:36:18,484 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 23:36:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:18,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:36:18,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:36:18,866 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:36:18,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:36:19,248 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:36:19,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364201750] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:36:19,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:36:19,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2023-03-30 23:36:19,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414646470] [2023-03-30 23:36:19,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:36:19,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-30 23:36:19,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:36:19,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-30 23:36:19,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-03-30 23:36:19,251 INFO L87 Difference]: Start difference. First operand 7278 states and 9238 transitions. Second operand has 13 states, 13 states have (on average 47.69230769230769) internal successors, (620), 11 states have internal predecessors, (620), 5 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-30 23:36:25,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:36:25,116 INFO L93 Difference]: Finished difference Result 21169 states and 27910 transitions. [2023-03-30 23:36:25,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-30 23:36:25,127 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 47.69230769230769) internal successors, (620), 11 states have internal predecessors, (620), 5 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 404 [2023-03-30 23:36:25,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:36:25,208 INFO L225 Difference]: With dead ends: 21169 [2023-03-30 23:36:25,208 INFO L226 Difference]: Without dead ends: 13897 [2023-03-30 23:36:25,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 839 GetRequests, 815 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2023-03-30 23:36:25,226 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 3030 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 8873 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3034 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 9536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 8873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-03-30 23:36:25,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3034 Valid, 181 Invalid, 9536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 8873 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-03-30 23:36:25,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13897 states. [2023-03-30 23:36:25,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13897 to 12531. [2023-03-30 23:36:25,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12531 states, 12231 states have (on average 1.1326956095168015) internal successors, (13854), 12326 states have internal predecessors, (13854), 104 states have call successors, (104), 74 states have call predecessors, (104), 195 states have return successors, (1210), 130 states have call predecessors, (1210), 103 states have call successors, (1210) [2023-03-30 23:36:25,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12531 states to 12531 states and 15168 transitions. [2023-03-30 23:36:25,556 INFO L78 Accepts]: Start accepts. Automaton has 12531 states and 15168 transitions. Word has length 404 [2023-03-30 23:36:25,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:36:25,558 INFO L495 AbstractCegarLoop]: Abstraction has 12531 states and 15168 transitions. [2023-03-30 23:36:25,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 47.69230769230769) internal successors, (620), 11 states have internal predecessors, (620), 5 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-30 23:36:25,559 INFO L276 IsEmpty]: Start isEmpty. Operand 12531 states and 15168 transitions. [2023-03-30 23:36:25,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2023-03-30 23:36:25,570 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:36:25,570 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:36:25,583 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 23:36:25,784 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,SelfDestructingSolverStorable5 [2023-03-30 23:36:25,784 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:36:25,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:36:25,785 INFO L85 PathProgramCache]: Analyzing trace with hash -971662711, now seen corresponding path program 1 times [2023-03-30 23:36:25,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:36:25,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683594918] [2023-03-30 23:36:25,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:36:25,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:36:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:26,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:36:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:26,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:36:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:26,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-03-30 23:36:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:26,310 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-03-30 23:36:26,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:36:26,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683594918] [2023-03-30 23:36:26,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683594918] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:36:26,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508440209] [2023-03-30 23:36:26,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:36:26,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:36:26,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:36:26,312 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 23:36:26,337 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 23:36:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:26,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:36:26,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:36:26,542 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-03-30 23:36:26,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:36:26,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508440209] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:36:26,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:36:26,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:36:26,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039642806] [2023-03-30 23:36:26,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:36:26,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:36:26,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:36:26,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:36:26,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:36:26,545 INFO L87 Difference]: Start difference. First operand 12531 states and 15168 transitions. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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 23:36:27,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:36:27,973 INFO L93 Difference]: Finished difference Result 31890 states and 39099 transitions. [2023-03-30 23:36:27,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:36:27,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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 466 [2023-03-30 23:36:27,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:36:28,029 INFO L225 Difference]: With dead ends: 31890 [2023-03-30 23:36:28,030 INFO L226 Difference]: Without dead ends: 15871 [2023-03-30 23:36:28,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:36:28,074 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 351 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-30 23:36:28,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 573 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-30 23:36:28,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15871 states. [2023-03-30 23:36:28,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15871 to 15530. [2023-03-30 23:36:28,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15530 states, 15212 states have (on average 1.0393110702077308) internal successors, (15810), 15294 states have internal predecessors, (15810), 129 states have call successors, (129), 92 states have call predecessors, (129), 188 states have return successors, (1103), 143 states have call predecessors, (1103), 128 states have call successors, (1103) [2023-03-30 23:36:28,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15530 states to 15530 states and 17042 transitions. [2023-03-30 23:36:28,399 INFO L78 Accepts]: Start accepts. Automaton has 15530 states and 17042 transitions. Word has length 466 [2023-03-30 23:36:28,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:36:28,399 INFO L495 AbstractCegarLoop]: Abstraction has 15530 states and 17042 transitions. [2023-03-30 23:36:28,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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 23:36:28,400 INFO L276 IsEmpty]: Start isEmpty. Operand 15530 states and 17042 transitions. [2023-03-30 23:36:28,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2023-03-30 23:36:28,437 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:36:28,437 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, 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, 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, 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, 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] [2023-03-30 23:36:28,446 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 23:36:28,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:36:28,646 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:36:28,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:36:28,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1553953017, now seen corresponding path program 1 times [2023-03-30 23:36:28,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:36:28,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979792242] [2023-03-30 23:36:28,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:36:28,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:36:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:29,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:36:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:29,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:36:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:29,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-03-30 23:36:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:29,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-03-30 23:36:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:29,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2023-03-30 23:36:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:29,494 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 162 proven. 4 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2023-03-30 23:36:29,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:36:29,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979792242] [2023-03-30 23:36:29,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979792242] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:36:29,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782384243] [2023-03-30 23:36:29,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:36:29,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:36:29,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:36:29,497 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 23:36:29,505 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 23:36:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:29,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:36:29,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:36:29,828 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 667 trivial. 0 not checked. [2023-03-30 23:36:29,829 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:36:29,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782384243] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:36:29,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:36:29,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:36:29,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452774427] [2023-03-30 23:36:29,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:36:29,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:36:29,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:36:29,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:36:29,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:36:29,831 INFO L87 Difference]: Start difference. First operand 15530 states and 17042 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 23:36:30,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:36:30,703 INFO L93 Difference]: Finished difference Result 30717 states and 33735 transitions. [2023-03-30 23:36:30,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:36:30,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 734 [2023-03-30 23:36:30,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:36:30,767 INFO L225 Difference]: With dead ends: 30717 [2023-03-30 23:36:30,767 INFO L226 Difference]: Without dead ends: 15530 [2023-03-30 23:36:30,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 746 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:36:30,804 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 332 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-30 23:36:30,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 412 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-30 23:36:30,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15530 states. [2023-03-30 23:36:31,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15530 to 15530. [2023-03-30 23:36:31,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15530 states, 15212 states have (on average 1.035366815671838) internal successors, (15750), 15294 states have internal predecessors, (15750), 129 states have call successors, (129), 92 states have call predecessors, (129), 188 states have return successors, (986), 143 states have call predecessors, (986), 128 states have call successors, (986) [2023-03-30 23:36:31,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15530 states to 15530 states and 16865 transitions. [2023-03-30 23:36:31,226 INFO L78 Accepts]: Start accepts. Automaton has 15530 states and 16865 transitions. Word has length 734 [2023-03-30 23:36:31,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:36:31,227 INFO L495 AbstractCegarLoop]: Abstraction has 15530 states and 16865 transitions. [2023-03-30 23:36:31,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 23:36:31,227 INFO L276 IsEmpty]: Start isEmpty. Operand 15530 states and 16865 transitions. [2023-03-30 23:36:31,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 854 [2023-03-30 23:36:31,265 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:36:31,265 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, 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, 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, 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, 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 23:36:31,273 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 23:36:31,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:36:31,473 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:36:31,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:36:31,474 INFO L85 PathProgramCache]: Analyzing trace with hash -450845694, now seen corresponding path program 1 times [2023-03-30 23:36:31,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:36:31,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115365966] [2023-03-30 23:36:31,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:36:31,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:36:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:31,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:36:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:31,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:36:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:32,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-03-30 23:36:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:32,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2023-03-30 23:36:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:32,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2023-03-30 23:36:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:32,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1063 backedges. 425 proven. 2 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2023-03-30 23:36:32,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:36:32,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115365966] [2023-03-30 23:36:32,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115365966] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:36:32,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506490924] [2023-03-30 23:36:32,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:36:32,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:36:32,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:36:32,311 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 23:36:32,314 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 23:36:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:32,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:36:32,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:36:32,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1063 backedges. 428 proven. 2 refuted. 0 times theorem prover too weak. 633 trivial. 0 not checked. [2023-03-30 23:36:32,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:36:33,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1063 backedges. 428 proven. 2 refuted. 0 times theorem prover too weak. 633 trivial. 0 not checked. [2023-03-30 23:36:33,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506490924] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:36:33,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:36:33,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-03-30 23:36:33,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489879281] [2023-03-30 23:36:33,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:36:33,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-30 23:36:33,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:36:33,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-30 23:36:33,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:36:33,029 INFO L87 Difference]: Start difference. First operand 15530 states and 16865 transitions. Second operand has 12 states, 12 states have (on average 49.166666666666664) internal successors, (590), 10 states have internal predecessors, (590), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-30 23:36:35,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:36:35,859 INFO L93 Difference]: Finished difference Result 31084 states and 33811 transitions. [2023-03-30 23:36:35,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-30 23:36:35,860 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 49.166666666666664) internal successors, (590), 10 states have internal predecessors, (590), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 853 [2023-03-30 23:36:35,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:36:35,912 INFO L225 Difference]: With dead ends: 31084 [2023-03-30 23:36:35,912 INFO L226 Difference]: Without dead ends: 15897 [2023-03-30 23:36:35,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1748 GetRequests, 1723 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2023-03-30 23:36:35,942 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 2437 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 3727 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2437 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 4080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 3727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-03-30 23:36:35,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2437 Valid, 110 Invalid, 4080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 3727 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-03-30 23:36:35,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15897 states. [2023-03-30 23:36:36,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15897 to 15207. [2023-03-30 23:36:36,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15207 states, 14886 states have (on average 1.0290877334408168) internal successors, (15319), 14974 states have internal predecessors, (15319), 126 states have call successors, (126), 90 states have call predecessors, (126), 194 states have return successors, (854), 142 states have call predecessors, (854), 125 states have call successors, (854) [2023-03-30 23:36:36,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15207 states to 15207 states and 16299 transitions. [2023-03-30 23:36:36,360 INFO L78 Accepts]: Start accepts. Automaton has 15207 states and 16299 transitions. Word has length 853 [2023-03-30 23:36:36,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:36:36,361 INFO L495 AbstractCegarLoop]: Abstraction has 15207 states and 16299 transitions. [2023-03-30 23:36:36,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 49.166666666666664) internal successors, (590), 10 states have internal predecessors, (590), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-30 23:36:36,361 INFO L276 IsEmpty]: Start isEmpty. Operand 15207 states and 16299 transitions. [2023-03-30 23:36:36,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1119 [2023-03-30 23:36:36,408 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:36:36,409 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:36:36,416 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 23:36:36,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:36:36,617 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:36:36,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:36:36,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1916730930, now seen corresponding path program 1 times [2023-03-30 23:36:36,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:36:36,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882281200] [2023-03-30 23:36:36,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:36:36,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:36:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:38,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:36:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:38,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:36:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:38,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-03-30 23:36:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:38,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2023-03-30 23:36:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:38,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2023-03-30 23:36:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:38,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 638 [2023-03-30 23:36:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:38,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 748 [2023-03-30 23:36:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:39,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-03-30 23:36:39,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:39,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 949 proven. 20 refuted. 0 times theorem prover too weak. 1131 trivial. 0 not checked. [2023-03-30 23:36:39,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:36:39,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882281200] [2023-03-30 23:36:39,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882281200] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:36:39,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145553620] [2023-03-30 23:36:39,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:36:39,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:36:39,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:36:39,861 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 23:36:39,864 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 23:36:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:40,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 11 conjunts are in the unsatisfiable core [2023-03-30 23:36:40,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:36:40,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 772 proven. 0 refuted. 0 times theorem prover too weak. 1328 trivial. 0 not checked. [2023-03-30 23:36:40,508 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:36:40,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145553620] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:36:40,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:36:40,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2023-03-30 23:36:40,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564846386] [2023-03-30 23:36:40,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:36:40,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:36:40,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:36:40,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:36:40,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2023-03-30 23:36:40,511 INFO L87 Difference]: Start difference. First operand 15207 states and 16299 transitions. Second operand has 5 states, 5 states have (on average 117.0) internal successors, (585), 4 states have internal predecessors, (585), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-03-30 23:36:41,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:36:41,647 INFO L93 Difference]: Finished difference Result 27764 states and 29188 transitions. [2023-03-30 23:36:41,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 23:36:41,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 117.0) internal successors, (585), 4 states have internal predecessors, (585), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 1118 [2023-03-30 23:36:41,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:36:41,686 INFO L225 Difference]: With dead ends: 27764 [2023-03-30 23:36:41,686 INFO L226 Difference]: Without dead ends: 15088 [2023-03-30 23:36:41,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1149 GetRequests, 1132 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-03-30 23:36:41,705 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 524 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-30 23:36:41,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 69 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-30 23:36:41,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15088 states. [2023-03-30 23:36:41,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15088 to 14741. [2023-03-30 23:36:41,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14741 states, 14453 states have (on average 1.0295440392997994) internal successors, (14880), 14547 states have internal predecessors, (14880), 88 states have call successors, (88), 88 states have call predecessors, (88), 199 states have return successors, (522), 105 states have call predecessors, (522), 87 states have call successors, (522) [2023-03-30 23:36:41,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14741 states to 14741 states and 15490 transitions. [2023-03-30 23:36:41,951 INFO L78 Accepts]: Start accepts. Automaton has 14741 states and 15490 transitions. Word has length 1118 [2023-03-30 23:36:41,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:36:41,952 INFO L495 AbstractCegarLoop]: Abstraction has 14741 states and 15490 transitions. [2023-03-30 23:36:41,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.0) internal successors, (585), 4 states have internal predecessors, (585), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-03-30 23:36:41,952 INFO L276 IsEmpty]: Start isEmpty. Operand 14741 states and 15490 transitions. [2023-03-30 23:36:41,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1366 [2023-03-30 23:36:41,995 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:36:41,995 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:36:42,003 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 23:36:42,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:36:42,203 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:36:42,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:36:42,204 INFO L85 PathProgramCache]: Analyzing trace with hash 330786296, now seen corresponding path program 1 times [2023-03-30 23:36:42,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:36:42,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451476582] [2023-03-30 23:36:42,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:36:42,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:36:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:44,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:36:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:44,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:36:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:44,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-03-30 23:36:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:45,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2023-03-30 23:36:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:45,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2023-03-30 23:36:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:45,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 743 [2023-03-30 23:36:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:45,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 885 [2023-03-30 23:36:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:45,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 995 [2023-03-30 23:36:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:45,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-03-30 23:36:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:45,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3122 backedges. 498 proven. 752 refuted. 0 times theorem prover too weak. 1872 trivial. 0 not checked. [2023-03-30 23:36:45,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:36:45,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451476582] [2023-03-30 23:36:45,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451476582] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:36:45,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130235459] [2023-03-30 23:36:45,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:36:45,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:36:45,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:36:45,381 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 23:36:45,407 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 23:36:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:36:45,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 1779 conjuncts, 12 conjunts are in the unsatisfiable core [2023-03-30 23:36:45,767 INFO L285 TraceCheckSpWp]: Computing forward predicates...