/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/Problem18_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 23:39:20,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 23:39:20,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 23:39:20,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 23:39:20,101 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 [2023-04-01 23:39:20,128 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 23:39:20,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 23:39:20,129 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 23:39:20,129 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 23:39:20,131 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 23:39:20,131 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 23:39:20,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 23:39:20,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 23:39:20,131 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 23:39:20,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 23:39:20,132 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 23:39:20,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 23:39:20,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 23:39:20,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 23:39:20,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 23:39:20,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 23:39:20,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 23:39:20,133 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 23:39:20,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 23:39:20,133 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 23:39:20,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 23:39:20,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 23:39:20,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 23:39:20,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 23:39:20,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:39:20,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 23:39:20,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 23:39:20,134 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 23:39:20,134 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 23:39:20,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 23:39:20,135 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 23:39:20,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 23:39:20,135 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 23:39:20,135 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 23:39:20,135 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 23:39:20,135 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 23:39:20,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 23:39:20,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 23:39:20,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 23:39:20,404 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 23:39:20,405 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 23:39:20,406 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem18_label10.c [2023-04-01 23:39:21,561 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 23:39:21,968 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 23:39:21,968 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label10.c [2023-04-01 23:39:21,992 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d016802e/6d41ff0344f244caabd725a6a91716ef/FLAGfaeadeda9 [2023-04-01 23:39:22,006 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d016802e/6d41ff0344f244caabd725a6a91716ef [2023-04-01 23:39:22,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 23:39:22,010 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 23:39:22,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 23:39:22,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 23:39:22,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 23:39:22,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:39:22" (1/1) ... [2023-04-01 23:39:22,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10ca2f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:22, skipping insertion in model container [2023-04-01 23:39:22,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:39:22" (1/1) ... [2023-04-01 23:39:22,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 23:39:22,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 23:39:22,355 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/Problem18_label10.c[2213,2226] [2023-04-01 23:39:22,953 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:39:22,966 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 23:39:22,994 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/Problem18_label10.c[2213,2226] [2023-04-01 23:39:23,311 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:39:23,331 INFO L208 MainTranslator]: Completed translation [2023-04-01 23:39:23,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:23 WrapperNode [2023-04-01 23:39:23,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 23:39:23,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 23:39:23,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 23:39:23,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 23:39:23,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:23" (1/1) ... [2023-04-01 23:39:23,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:23" (1/1) ... [2023-04-01 23:39:23,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:23" (1/1) ... [2023-04-01 23:39:23,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:23" (1/1) ... [2023-04-01 23:39:23,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:23" (1/1) ... [2023-04-01 23:39:23,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:23" (1/1) ... [2023-04-01 23:39:23,517 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:23" (1/1) ... [2023-04-01 23:39:23,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:23" (1/1) ... [2023-04-01 23:39:23,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 23:39:23,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 23:39:23,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 23:39:23,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 23:39:23,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:23" (1/1) ... [2023-04-01 23:39:23,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:39:23,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:39:23,583 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) [2023-04-01 23:39:23,586 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 [2023-04-01 23:39:23,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 23:39:23,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 23:39:23,616 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 23:39:23,617 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 23:39:23,617 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 23:39:23,617 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 23:39:23,617 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 23:39:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 23:39:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 23:39:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 23:39:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 23:39:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 23:39:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 23:39:23,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 23:39:23,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 23:39:23,618 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 23:39:23,618 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 23:39:23,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 23:39:23,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 23:39:23,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 23:39:23,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 23:39:23,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 23:39:23,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 23:39:23,679 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 23:39:23,681 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 23:39:26,453 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 23:39:26,465 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 23:39:26,465 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 23:39:26,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:39:26 BoogieIcfgContainer [2023-04-01 23:39:26,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 23:39:26,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 23:39:26,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 23:39:26,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 23:39:26,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:39:22" (1/3) ... [2023-04-01 23:39:26,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3210187d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:39:26, skipping insertion in model container [2023-04-01 23:39:26,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:23" (2/3) ... [2023-04-01 23:39:26,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3210187d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:39:26, skipping insertion in model container [2023-04-01 23:39:26,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:39:26" (3/3) ... [2023-04-01 23:39:26,475 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label10.c [2023-04-01 23:39:26,489 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 23:39:26,490 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 23:39:26,545 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 23:39:26,551 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;@11889e71, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 23:39:26,551 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 23:39:26,558 INFO L276 IsEmpty]: Start isEmpty. Operand has 774 states, 762 states have (on average 1.9041994750656168) internal successors, (1451), 763 states have internal predecessors, (1451), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 23:39:26,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-01 23:39:26,565 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:39:26,565 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] [2023-04-01 23:39:26,566 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:39:26,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:39:26,570 INFO L85 PathProgramCache]: Analyzing trace with hash -785448541, now seen corresponding path program 1 times [2023-04-01 23:39:26,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:39:26,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519998024] [2023-04-01 23:39:26,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:26,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:39:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:26,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:39:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:27,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:39:27,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:39:27,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519998024] [2023-04-01 23:39:27,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519998024] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:39:27,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:39:27,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 23:39:27,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114385099] [2023-04-01 23:39:27,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:39:27,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 23:39:27,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:39:27,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 23:39:27,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 23:39:27,104 INFO L87 Difference]: Start difference. First operand has 774 states, 762 states have (on average 1.9041994750656168) internal successors, (1451), 763 states have internal predecessors, (1451), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 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) [2023-04-01 23:39:31,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:39:31,585 INFO L93 Difference]: Finished difference Result 2286 states and 4364 transitions. [2023-04-01 23:39:31,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 23:39:31,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 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 24 [2023-04-01 23:39:31,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:39:31,610 INFO L225 Difference]: With dead ends: 2286 [2023-04-01 23:39:31,611 INFO L226 Difference]: Without dead ends: 1432 [2023-04-01 23:39:31,623 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 [2023-04-01 23:39:31,626 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2261 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3226 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2261 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 3957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 3226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:39:31,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2261 Valid, 38 Invalid, 3957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [731 Valid, 3226 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-04-01 23:39:31,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2023-04-01 23:39:31,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1428. [2023-04-01 23:39:31,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1406 states have (on average 1.5896159317211949) internal successors, (2235), 1408 states have internal predecessors, (2235), 8 states have call successors, (8), 8 states have call predecessors, (8), 13 states have return successors, (19), 11 states have call predecessors, (19), 7 states have call successors, (19) [2023-04-01 23:39:31,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 2262 transitions. [2023-04-01 23:39:31,754 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 2262 transitions. Word has length 24 [2023-04-01 23:39:31,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:39:31,754 INFO L495 AbstractCegarLoop]: Abstraction has 1428 states and 2262 transitions. [2023-04-01 23:39:31,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 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) [2023-04-01 23:39:31,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 2262 transitions. [2023-04-01 23:39:31,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-04-01 23:39:31,757 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:39:31,757 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 23:39:31,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 23:39:31,758 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:39:31,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:39:31,759 INFO L85 PathProgramCache]: Analyzing trace with hash -686762403, now seen corresponding path program 1 times [2023-04-01 23:39:31,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:39:31,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113601526] [2023-04-01 23:39:31,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:31,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:39:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:31,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:39:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:31,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:39:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:32,007 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:39:32,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:39:32,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113601526] [2023-04-01 23:39:32,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113601526] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:39:32,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:39:32,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 23:39:32,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27728977] [2023-04-01 23:39:32,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:39:32,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 23:39:32,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:39:32,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 23:39:32,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:39:32,010 INFO L87 Difference]: Start difference. First operand 1428 states and 2262 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 5 states have internal predecessors, (87), 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) [2023-04-01 23:39:38,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:39:38,443 INFO L93 Difference]: Finished difference Result 5784 states and 9263 transitions. [2023-04-01 23:39:38,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 23:39:38,444 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 5 states have internal predecessors, (87), 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 93 [2023-04-01 23:39:38,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:39:38,462 INFO L225 Difference]: With dead ends: 5784 [2023-04-01 23:39:38,462 INFO L226 Difference]: Without dead ends: 4362 [2023-04-01 23:39:38,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:39:38,467 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 3829 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 7436 mSolverCounterSat, 1572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3829 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 9008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1572 IncrementalHoareTripleChecker+Valid, 7436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:39:38,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3829 Valid, 120 Invalid, 9008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1572 Valid, 7436 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-04-01 23:39:38,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4362 states. [2023-04-01 23:39:38,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4362 to 4345. [2023-04-01 23:39:38,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4345 states, 4258 states have (on average 1.3586190699859089) internal successors, (5785), 4274 states have internal predecessors, (5785), 20 states have call successors, (20), 20 states have call predecessors, (20), 66 states have return successors, (175), 50 states have call predecessors, (175), 19 states have call successors, (175) [2023-04-01 23:39:38,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4345 states to 4345 states and 5980 transitions. [2023-04-01 23:39:38,599 INFO L78 Accepts]: Start accepts. Automaton has 4345 states and 5980 transitions. Word has length 93 [2023-04-01 23:39:38,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:39:38,599 INFO L495 AbstractCegarLoop]: Abstraction has 4345 states and 5980 transitions. [2023-04-01 23:39:38,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 5 states have internal predecessors, (87), 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) [2023-04-01 23:39:38,600 INFO L276 IsEmpty]: Start isEmpty. Operand 4345 states and 5980 transitions. [2023-04-01 23:39:38,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-04-01 23:39:38,604 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:39:38,604 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:39:38,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 23:39:38,605 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:39:38,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:39:38,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1848730474, now seen corresponding path program 1 times [2023-04-01 23:39:38,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:39:38,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928096329] [2023-04-01 23:39:38,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:38,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:39:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:38,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:39:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:38,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:39:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:39,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:39:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:39,156 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 23:39:39,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:39:39,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928096329] [2023-04-01 23:39:39,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928096329] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:39:39,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794187] [2023-04-01 23:39:39,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:39,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:39:39,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:39:39,165 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) [2023-04-01 23:39:39,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 23:39:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:39,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:39:39,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:39:39,500 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:39:39,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:39:39,792 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:39:39,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794187] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:39:39,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:39:39,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:39:39,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088798858] [2023-04-01 23:39:39,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:39:39,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:39:39,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:39:39,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:39:39,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:39:39,799 INFO L87 Difference]: Start difference. First operand 4345 states and 5980 transitions. Second operand has 11 states, 11 states have (on average 32.09090909090909) internal successors, (353), 9 states have internal predecessors, (353), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:39:47,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:39:47,369 INFO L93 Difference]: Finished difference Result 14716 states and 20304 transitions. [2023-04-01 23:39:47,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-01 23:39:47,371 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 32.09090909090909) internal successors, (353), 9 states have internal predecessors, (353), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 219 [2023-04-01 23:39:47,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:39:47,409 INFO L225 Difference]: With dead ends: 14716 [2023-04-01 23:39:47,410 INFO L226 Difference]: Without dead ends: 9603 [2023-04-01 23:39:47,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 442 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-04-01 23:39:47,421 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 3752 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 12238 mSolverCounterSat, 1927 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3755 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 14165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1927 IncrementalHoareTripleChecker+Valid, 12238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:39:47,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3755 Valid, 214 Invalid, 14165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1927 Valid, 12238 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-04-01 23:39:47,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9603 states. [2023-04-01 23:39:47,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9603 to 9455. [2023-04-01 23:39:47,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9455 states, 9250 states have (on average 1.1363243243243244) internal successors, (10511), 9299 states have internal predecessors, (10511), 42 states have call successors, (42), 41 states have call predecessors, (42), 162 states have return successors, (428), 114 states have call predecessors, (428), 41 states have call successors, (428) [2023-04-01 23:39:47,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9455 states to 9455 states and 10981 transitions. [2023-04-01 23:39:47,648 INFO L78 Accepts]: Start accepts. Automaton has 9455 states and 10981 transitions. Word has length 219 [2023-04-01 23:39:47,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:39:47,650 INFO L495 AbstractCegarLoop]: Abstraction has 9455 states and 10981 transitions. [2023-04-01 23:39:47,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 32.09090909090909) internal successors, (353), 9 states have internal predecessors, (353), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:39:47,650 INFO L276 IsEmpty]: Start isEmpty. Operand 9455 states and 10981 transitions. [2023-04-01 23:39:47,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-04-01 23:39:47,656 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:39:47,656 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:39:47,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 23:39:47,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:39:47,868 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:39:47,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:39:47,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1193040321, now seen corresponding path program 1 times [2023-04-01 23:39:47,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:39:47,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692752299] [2023-04-01 23:39:47,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:47,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:39:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:48,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:39:48,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:48,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:39:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:48,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:39:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:48,181 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-04-01 23:39:48,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:39:48,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692752299] [2023-04-01 23:39:48,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692752299] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:39:48,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598186754] [2023-04-01 23:39:48,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:48,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:39:48,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:39:48,185 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) [2023-04-01 23:39:48,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 23:39:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:48,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:39:48,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:39:48,335 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-04-01 23:39:48,335 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:39:48,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598186754] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:39:48,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:39:48,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:39:48,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385708283] [2023-04-01 23:39:48,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:39:48,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:39:48,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:39:48,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:39:48,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:39:48,342 INFO L87 Difference]: Start difference. First operand 9455 states and 10981 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2023-04-01 23:39:50,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:39:50,360 INFO L93 Difference]: Finished difference Result 17496 states and 20441 transitions. [2023-04-01 23:39:50,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:39:50,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 252 [2023-04-01 23:39:50,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:39:50,399 INFO L225 Difference]: With dead ends: 17496 [2023-04-01 23:39:50,400 INFO L226 Difference]: Without dead ends: 9455 [2023-04-01 23:39:50,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:39:50,421 INFO L413 NwaCegarLoop]: 1026 mSDtfsCounter, 751 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 2201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:39:50,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 1052 Invalid, 2201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 1823 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-01 23:39:50,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9455 states. [2023-04-01 23:39:50,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9455 to 9447. [2023-04-01 23:39:50,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9447 states, 9245 states have (on average 1.0918334234721472) internal successors, (10094), 9293 states have internal predecessors, (10094), 42 states have call successors, (42), 41 states have call predecessors, (42), 159 states have return successors, (318), 112 states have call predecessors, (318), 41 states have call successors, (318) [2023-04-01 23:39:50,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9447 states to 9447 states and 10454 transitions. [2023-04-01 23:39:50,611 INFO L78 Accepts]: Start accepts. Automaton has 9447 states and 10454 transitions. Word has length 252 [2023-04-01 23:39:50,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:39:50,611 INFO L495 AbstractCegarLoop]: Abstraction has 9447 states and 10454 transitions. [2023-04-01 23:39:50,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2023-04-01 23:39:50,612 INFO L276 IsEmpty]: Start isEmpty. Operand 9447 states and 10454 transitions. [2023-04-01 23:39:50,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-04-01 23:39:50,614 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:39:50,615 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:39:50,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 23:39:50,820 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,SelfDestructingSolverStorable3 [2023-04-01 23:39:50,821 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:39:50,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:39:50,823 INFO L85 PathProgramCache]: Analyzing trace with hash -78503262, now seen corresponding path program 1 times [2023-04-01 23:39:50,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:39:50,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920666484] [2023-04-01 23:39:50,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:50,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:39:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:51,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:39:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:51,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:39:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:51,385 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:39:51,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:39:51,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920666484] [2023-04-01 23:39:51,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920666484] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:39:51,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:39:51,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:39:51,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024082670] [2023-04-01 23:39:51,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:39:51,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:39:51,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:39:51,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:39:51,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:39:51,390 INFO L87 Difference]: Start difference. First operand 9447 states and 10454 transitions. Second operand has 7 states, 6 states have (on average 42.0) internal successors, (252), 4 states have internal predecessors, (252), 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) [2023-04-01 23:39:54,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:39:54,472 INFO L93 Difference]: Finished difference Result 21904 states and 24766 transitions. [2023-04-01 23:39:54,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 23:39:54,474 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 42.0) internal successors, (252), 4 states have internal predecessors, (252), 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 258 [2023-04-01 23:39:54,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:39:54,523 INFO L225 Difference]: With dead ends: 21904 [2023-04-01 23:39:54,523 INFO L226 Difference]: Without dead ends: 13871 [2023-04-01 23:39:54,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:39:54,542 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 4544 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 4003 mSolverCounterSat, 508 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4544 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 4511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 4003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:39:54,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4544 Valid, 112 Invalid, 4511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [508 Valid, 4003 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-01 23:39:54,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13871 states. [2023-04-01 23:39:54,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13871 to 12391. [2023-04-01 23:39:54,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12391 states, 12111 states have (on average 1.0778630996614649) internal successors, (13054), 12184 states have internal predecessors, (13054), 53 states have call successors, (53), 53 states have call predecessors, (53), 226 states have return successors, (500), 153 states have call predecessors, (500), 52 states have call successors, (500) [2023-04-01 23:39:54,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12391 states to 12391 states and 13607 transitions. [2023-04-01 23:39:54,787 INFO L78 Accepts]: Start accepts. Automaton has 12391 states and 13607 transitions. Word has length 258 [2023-04-01 23:39:54,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:39:54,787 INFO L495 AbstractCegarLoop]: Abstraction has 12391 states and 13607 transitions. [2023-04-01 23:39:54,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 42.0) internal successors, (252), 4 states have internal predecessors, (252), 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) [2023-04-01 23:39:54,788 INFO L276 IsEmpty]: Start isEmpty. Operand 12391 states and 13607 transitions. [2023-04-01 23:39:54,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2023-04-01 23:39:54,793 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:39:54,793 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:39:54,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 23:39:54,793 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:39:54,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:39:54,794 INFO L85 PathProgramCache]: Analyzing trace with hash 553464187, now seen corresponding path program 1 times [2023-04-01 23:39:54,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:39:54,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144882008] [2023-04-01 23:39:54,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:54,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:39:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:55,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:39:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:55,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:39:55,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:55,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:39:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:55,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:39:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:55,161 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 54 proven. 3 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-04-01 23:39:55,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:39:55,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144882008] [2023-04-01 23:39:55,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144882008] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:39:55,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822232403] [2023-04-01 23:39:55,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:55,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:39:55,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:39:55,163 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) [2023-04-01 23:39:55,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 23:39:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:55,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:39:55,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:39:55,337 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-04-01 23:39:55,338 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:39:55,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822232403] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:39:55,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:39:55,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:39:55,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472237399] [2023-04-01 23:39:55,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:39:55,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:39:55,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:39:55,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:39:55,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:39:55,340 INFO L87 Difference]: Start difference. First operand 12391 states and 13607 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2023-04-01 23:39:57,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:39:57,449 INFO L93 Difference]: Finished difference Result 34732 states and 38796 transitions. [2023-04-01 23:39:57,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:39:57,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 339 [2023-04-01 23:39:57,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:39:57,506 INFO L225 Difference]: With dead ends: 34732 [2023-04-01 23:39:57,506 INFO L226 Difference]: Without dead ends: 21565 [2023-04-01 23:39:57,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:39:57,528 INFO L413 NwaCegarLoop]: 1165 mSDtfsCounter, 683 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 2362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:39:57,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 1191 Invalid, 2362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-01 23:39:57,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21565 states. [2023-04-01 23:39:57,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21565 to 21560. [2023-04-01 23:39:57,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21560 states, 21182 states have (on average 1.0443300915871967) internal successors, (22121), 21272 states have internal predecessors, (22121), 92 states have call successors, (92), 92 states have call predecessors, (92), 285 states have return successors, (891), 195 states have call predecessors, (891), 91 states have call successors, (891) [2023-04-01 23:39:57,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21560 states to 21560 states and 23104 transitions. [2023-04-01 23:39:57,883 INFO L78 Accepts]: Start accepts. Automaton has 21560 states and 23104 transitions. Word has length 339 [2023-04-01 23:39:57,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:39:57,883 INFO L495 AbstractCegarLoop]: Abstraction has 21560 states and 23104 transitions. [2023-04-01 23:39:57,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2023-04-01 23:39:57,883 INFO L276 IsEmpty]: Start isEmpty. Operand 21560 states and 23104 transitions. [2023-04-01 23:39:57,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-04-01 23:39:57,887 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:39:57,887 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:39:57,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 23:39:58,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:39:58,094 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:39:58,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:39:58,094 INFO L85 PathProgramCache]: Analyzing trace with hash 187492996, now seen corresponding path program 1 times [2023-04-01 23:39:58,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:39:58,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282977608] [2023-04-01 23:39:58,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:58,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:39:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:58,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:39:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:58,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:39:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:58,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:39:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:58,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:39:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:58,462 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 54 proven. 3 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-04-01 23:39:58,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:39:58,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282977608] [2023-04-01 23:39:58,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282977608] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:39:58,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127420179] [2023-04-01 23:39:58,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:58,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:39:58,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:39:58,464 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) [2023-04-01 23:39:58,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 23:39:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:58,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:39:58,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:39:58,648 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-04-01 23:39:58,648 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:39:58,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127420179] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:39:58,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:39:58,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:39:58,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952960160] [2023-04-01 23:39:58,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:39:58,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:39:58,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:39:58,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:39:58,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:39:58,651 INFO L87 Difference]: Start difference. First operand 21560 states and 23104 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2023-04-01 23:40:00,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:00,545 INFO L93 Difference]: Finished difference Result 50212 states and 54503 transitions. [2023-04-01 23:40:00,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:40:00,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 340 [2023-04-01 23:40:00,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:00,627 INFO L225 Difference]: With dead ends: 50212 [2023-04-01 23:40:00,627 INFO L226 Difference]: Without dead ends: 28658 [2023-04-01 23:40:00,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:40:00,674 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 714 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 2037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:00,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 196 Invalid, 2037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-01 23:40:00,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28658 states. [2023-04-01 23:40:01,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28658 to 27252. [2023-04-01 23:40:01,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27252 states, 26796 states have (on average 1.0490744887296612) internal successors, (28111), 26900 states have internal predecessors, (28111), 116 states have call successors, (116), 116 states have call predecessors, (116), 339 states have return successors, (1332), 235 states have call predecessors, (1332), 115 states have call successors, (1332) [2023-04-01 23:40:01,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27252 states to 27252 states and 29559 transitions. [2023-04-01 23:40:01,164 INFO L78 Accepts]: Start accepts. Automaton has 27252 states and 29559 transitions. Word has length 340 [2023-04-01 23:40:01,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:01,165 INFO L495 AbstractCegarLoop]: Abstraction has 27252 states and 29559 transitions. [2023-04-01 23:40:01,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2023-04-01 23:40:01,165 INFO L276 IsEmpty]: Start isEmpty. Operand 27252 states and 29559 transitions. [2023-04-01 23:40:01,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-04-01 23:40:01,170 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:01,170 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:01,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 23:40:01,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:01,380 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:01,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:01,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1905111061, now seen corresponding path program 1 times [2023-04-01 23:40:01,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:01,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886506467] [2023-04-01 23:40:01,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:01,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:01,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:01,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:01,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:40:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:01,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:40:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:01,667 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 54 proven. 3 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-04-01 23:40:01,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:01,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886506467] [2023-04-01 23:40:01,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886506467] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:01,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117341508] [2023-04-01 23:40:01,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:01,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:01,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:01,669 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) [2023-04-01 23:40:01,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 23:40:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:01,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:40:01,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:01,831 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-04-01 23:40:01,831 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:40:01,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117341508] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:40:01,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:40:01,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:40:01,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243411223] [2023-04-01 23:40:01,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:40:01,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:40:01,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:01,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:40:01,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:40:01,833 INFO L87 Difference]: Start difference. First operand 27252 states and 29559 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2023-04-01 23:40:03,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:03,733 INFO L93 Difference]: Finished difference Result 67297 states and 74045 transitions. [2023-04-01 23:40:03,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:40:03,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 347 [2023-04-01 23:40:03,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:03,852 INFO L225 Difference]: With dead ends: 67297 [2023-04-01 23:40:03,852 INFO L226 Difference]: Without dead ends: 39339 [2023-04-01 23:40:03,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:40:03,897 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 692 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 2053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:03,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 943 Invalid, 2053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 1760 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-01 23:40:03,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39339 states. [2023-04-01 23:40:04,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39339 to 37928. [2023-04-01 23:40:04,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37928 states, 37322 states have (on average 1.0487915974492257) internal successors, (39143), 37460 states have internal predecessors, (39143), 161 states have call successors, (161), 161 states have call predecessors, (161), 444 states have return successors, (2237), 306 states have call predecessors, (2237), 160 states have call successors, (2237) [2023-04-01 23:40:04,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37928 states to 37928 states and 41541 transitions. [2023-04-01 23:40:04,555 INFO L78 Accepts]: Start accepts. Automaton has 37928 states and 41541 transitions. Word has length 347 [2023-04-01 23:40:04,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:04,556 INFO L495 AbstractCegarLoop]: Abstraction has 37928 states and 41541 transitions. [2023-04-01 23:40:04,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2023-04-01 23:40:04,556 INFO L276 IsEmpty]: Start isEmpty. Operand 37928 states and 41541 transitions. [2023-04-01 23:40:04,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2023-04-01 23:40:04,570 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:04,570 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:04,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 23:40:04,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:04,775 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:04,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:04,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1290146526, now seen corresponding path program 1 times [2023-04-01 23:40:04,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:04,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274817419] [2023-04-01 23:40:04,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:04,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:04,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:05,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:05,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:40:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:05,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:40:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:05,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-04-01 23:40:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:05,114 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 73 proven. 4 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2023-04-01 23:40:05,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:05,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274817419] [2023-04-01 23:40:05,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274817419] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:05,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847057067] [2023-04-01 23:40:05,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:05,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:05,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:05,116 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) [2023-04-01 23:40:05,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 23:40:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:05,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:40:05,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:05,545 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2023-04-01 23:40:05,545 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:40:05,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847057067] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:40:05,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:40:05,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:40:05,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372561019] [2023-04-01 23:40:05,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:40:05,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:40:05,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:05,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:40:05,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:40:05,548 INFO L87 Difference]: Start difference. First operand 37928 states and 41541 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2023-04-01 23:40:07,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:07,432 INFO L93 Difference]: Finished difference Result 75850 states and 83076 transitions. [2023-04-01 23:40:07,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:40:07,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 443 [2023-04-01 23:40:07,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:07,525 INFO L225 Difference]: With dead ends: 75850 [2023-04-01 23:40:07,525 INFO L226 Difference]: Without dead ends: 37928 [2023-04-01 23:40:07,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:40:07,561 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 789 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:07,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 790 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1702 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 23:40:07,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37928 states. [2023-04-01 23:40:08,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37928 to 37928. [2023-04-01 23:40:08,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37928 states, 37322 states have (on average 1.0423878677455656) internal successors, (38904), 37460 states have internal predecessors, (38904), 161 states have call successors, (161), 161 states have call predecessors, (161), 444 states have return successors, (2006), 306 states have call predecessors, (2006), 160 states have call successors, (2006) [2023-04-01 23:40:08,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37928 states to 37928 states and 41071 transitions. [2023-04-01 23:40:08,190 INFO L78 Accepts]: Start accepts. Automaton has 37928 states and 41071 transitions. Word has length 443 [2023-04-01 23:40:08,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:08,191 INFO L495 AbstractCegarLoop]: Abstraction has 37928 states and 41071 transitions. [2023-04-01 23:40:08,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2023-04-01 23:40:08,192 INFO L276 IsEmpty]: Start isEmpty. Operand 37928 states and 41071 transitions. [2023-04-01 23:40:08,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2023-04-01 23:40:08,219 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:08,220 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:08,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 23:40:08,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:08,427 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:08,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:08,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1883163239, now seen corresponding path program 1 times [2023-04-01 23:40:08,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:08,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872091952] [2023-04-01 23:40:08,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:08,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:08,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:08,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:08,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:40:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:09,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:40:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:09,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:40:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:09,328 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 54 proven. 3 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 23:40:09,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:09,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872091952] [2023-04-01 23:40:09,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872091952] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:09,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726368244] [2023-04-01 23:40:09,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:09,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:09,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:09,333 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) [2023-04-01 23:40:09,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 23:40:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:09,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 913 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 23:40:09,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:09,599 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 23:40:09,599 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:40:09,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726368244] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:40:09,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:40:09,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:40:09,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057109427] [2023-04-01 23:40:09,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:40:09,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:40:09,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:09,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:40:09,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:40:09,603 INFO L87 Difference]: Start difference. First operand 37928 states and 41071 transitions. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:40:11,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:11,669 INFO L93 Difference]: Finished difference Result 90730 states and 99045 transitions. [2023-04-01 23:40:11,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:40:11,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 643 [2023-04-01 23:40:11,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:11,800 INFO L225 Difference]: With dead ends: 90730 [2023-04-01 23:40:11,800 INFO L226 Difference]: Without dead ends: 52808 [2023-04-01 23:40:11,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:40:11,848 INFO L413 NwaCegarLoop]: 1003 mSDtfsCounter, 693 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1776 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:11,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 1029 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1776 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-01 23:40:11,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52808 states. [2023-04-01 23:40:12,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52808 to 50699. [2023-04-01 23:40:12,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50699 states, 49929 states have (on average 1.037032586272507) internal successors, (51778), 50100 states have internal predecessors, (51778), 215 states have call successors, (215), 215 states have call predecessors, (215), 554 states have return successors, (2574), 383 states have call predecessors, (2574), 214 states have call successors, (2574) [2023-04-01 23:40:12,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50699 states to 50699 states and 54567 transitions. [2023-04-01 23:40:12,983 INFO L78 Accepts]: Start accepts. Automaton has 50699 states and 54567 transitions. Word has length 643 [2023-04-01 23:40:12,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:12,984 INFO L495 AbstractCegarLoop]: Abstraction has 50699 states and 54567 transitions. [2023-04-01 23:40:12,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:40:12,984 INFO L276 IsEmpty]: Start isEmpty. Operand 50699 states and 54567 transitions. [2023-04-01 23:40:13,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2023-04-01 23:40:13,033 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:13,034 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:13,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 23:40:13,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:13,241 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:13,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:13,241 INFO L85 PathProgramCache]: Analyzing trace with hash 268042081, now seen corresponding path program 1 times [2023-04-01 23:40:13,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:13,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218200695] [2023-04-01 23:40:13,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:13,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:13,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:13,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:13,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:40:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:13,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:40:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:14,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:40:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:14,190 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 54 proven. 3 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 23:40:14,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:14,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218200695] [2023-04-01 23:40:14,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218200695] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:14,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938341448] [2023-04-01 23:40:14,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:14,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:14,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:14,193 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:14,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 23:40:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:14,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:40:14,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:14,458 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 23:40:14,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:40:14,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938341448] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:40:14,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:40:14,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:40:14,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908100047] [2023-04-01 23:40:14,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:40:14,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:40:14,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:14,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:40:14,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:40:14,462 INFO L87 Difference]: Start difference. First operand 50699 states and 54567 transitions. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:40:16,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:16,440 INFO L93 Difference]: Finished difference Result 122591 states and 133401 transitions. [2023-04-01 23:40:16,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:40:16,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 752 [2023-04-01 23:40:16,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:16,585 INFO L225 Difference]: With dead ends: 122591 [2023-04-01 23:40:16,585 INFO L226 Difference]: Without dead ends: 71191 [2023-04-01 23:40:16,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 767 GetRequests, 763 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:40:16,655 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 695 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1769 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 1769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:16,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 256 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 1769 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-01 23:40:16,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71191 states. [2023-04-01 23:40:17,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71191 to 70489. [2023-04-01 23:40:17,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70489 states, 69495 states have (on average 1.0363767177494785) internal successors, (72023), 69700 states have internal predecessors, (72023), 299 states have call successors, (299), 299 states have call predecessors, (299), 694 states have return successors, (3895), 489 states have call predecessors, (3895), 298 states have call successors, (3895) [2023-04-01 23:40:18,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70489 states to 70489 states and 76217 transitions. [2023-04-01 23:40:18,250 INFO L78 Accepts]: Start accepts. Automaton has 70489 states and 76217 transitions. Word has length 752 [2023-04-01 23:40:18,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:18,251 INFO L495 AbstractCegarLoop]: Abstraction has 70489 states and 76217 transitions. [2023-04-01 23:40:18,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:40:18,251 INFO L276 IsEmpty]: Start isEmpty. Operand 70489 states and 76217 transitions. [2023-04-01 23:40:18,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2023-04-01 23:40:18,310 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:18,310 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:18,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-01 23:40:18,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-04-01 23:40:18,517 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:18,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:18,518 INFO L85 PathProgramCache]: Analyzing trace with hash 687838177, now seen corresponding path program 1 times [2023-04-01 23:40:18,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:18,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796589082] [2023-04-01 23:40:18,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:18,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:19,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:19,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:20,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:40:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:20,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:40:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:21,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:40:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:22,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:40:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:22,634 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 278 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-04-01 23:40:22,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:22,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796589082] [2023-04-01 23:40:22,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796589082] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:22,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034689692] [2023-04-01 23:40:22,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:22,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:22,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:22,637 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:22,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 23:40:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:22,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 23:40:22,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:23,379 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-04-01 23:40:23,379 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:40:23,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034689692] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:40:23,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:40:23,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-04-01 23:40:23,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503819397] [2023-04-01 23:40:23,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:40:23,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:40:23,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:23,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:40:23,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:40:23,382 INFO L87 Difference]: Start difference. First operand 70489 states and 76217 transitions. Second operand has 5 states, 5 states have (on average 133.4) internal successors, (667), 4 states have internal predecessors, (667), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:40:26,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:26,091 INFO L93 Difference]: Finished difference Result 147469 states and 159451 transitions. [2023-04-01 23:40:26,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 23:40:26,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 133.4) internal successors, (667), 4 states have internal predecessors, (667), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 800 [2023-04-01 23:40:26,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:26,377 INFO L225 Difference]: With dead ends: 147469 [2023-04-01 23:40:26,377 INFO L226 Difference]: Without dead ends: 76986 [2023-04-01 23:40:26,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 809 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-04-01 23:40:26,428 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 1900 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 3316 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1900 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 3529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 3316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:26,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1900 Valid, 109 Invalid, 3529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 3316 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-01 23:40:26,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76986 states. [2023-04-01 23:40:27,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76986 to 76266. [2023-04-01 23:40:27,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76266 states, 75158 states have (on average 1.0350195587961362) internal successors, (77790), 75400 states have internal predecessors, (77790), 323 states have call successors, (323), 323 states have call predecessors, (323), 784 states have return successors, (4227), 542 states have call predecessors, (4227), 322 states have call successors, (4227) [2023-04-01 23:40:27,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76266 states to 76266 states and 82340 transitions. [2023-04-01 23:40:27,595 INFO L78 Accepts]: Start accepts. Automaton has 76266 states and 82340 transitions. Word has length 800 [2023-04-01 23:40:27,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:27,596 INFO L495 AbstractCegarLoop]: Abstraction has 76266 states and 82340 transitions. [2023-04-01 23:40:27,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.4) internal successors, (667), 4 states have internal predecessors, (667), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:40:27,596 INFO L276 IsEmpty]: Start isEmpty. Operand 76266 states and 82340 transitions. [2023-04-01 23:40:27,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1108 [2023-04-01 23:40:27,643 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:27,644 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:27,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 23:40:27,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:27,849 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:27,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:27,850 INFO L85 PathProgramCache]: Analyzing trace with hash 635443213, now seen corresponding path program 1 times [2023-04-01 23:40:27,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:27,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24895167] [2023-04-01 23:40:27,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:27,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:29,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:29,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:29,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:29,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:40:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:29,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-04-01 23:40:29,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:29,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2023-04-01 23:40:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:29,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2023-04-01 23:40:29,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:30,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:40:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:32,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:40:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:32,284 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 603 proven. 2 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2023-04-01 23:40:32,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:32,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24895167] [2023-04-01 23:40:32,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24895167] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:32,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678690033] [2023-04-01 23:40:32,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:32,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:32,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:32,286 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:32,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 23:40:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:32,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:40:32,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:33,036 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 549 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2023-04-01 23:40:33,037 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:40:33,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678690033] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:40:33,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:40:33,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-04-01 23:40:33,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921513986] [2023-04-01 23:40:33,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:40:33,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:40:33,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:33,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:40:33,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-04-01 23:40:33,040 INFO L87 Difference]: Start difference. First operand 76266 states and 82340 transitions. Second operand has 5 states, 5 states have (on average 170.2) internal successors, (851), 4 states have internal predecessors, (851), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-01 23:40:35,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:35,805 INFO L93 Difference]: Finished difference Result 166767 states and 181037 transitions. [2023-04-01 23:40:35,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 23:40:35,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 170.2) internal successors, (851), 4 states have internal predecessors, (851), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 1107 [2023-04-01 23:40:35,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:35,967 INFO L225 Difference]: With dead ends: 166767 [2023-04-01 23:40:35,967 INFO L226 Difference]: Without dead ends: 90507 [2023-04-01 23:40:36,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1133 GetRequests, 1117 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-04-01 23:40:36,049 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 1545 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 3282 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 3769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 3282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:36,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1545 Valid, 115 Invalid, 3769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 3282 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-01 23:40:36,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90507 states. [2023-04-01 23:40:37,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90507 to 90494. [2023-04-01 23:40:37,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90494 states, 89188 states have (on average 1.034320760640445) internal successors, (92249), 89476 states have internal predecessors, (92249), 383 states have call successors, (383), 383 states have call predecessors, (383), 922 states have return successors, (5222), 634 states have call predecessors, (5222), 382 states have call successors, (5222) [2023-04-01 23:40:37,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90494 states to 90494 states and 97854 transitions. [2023-04-01 23:40:37,754 INFO L78 Accepts]: Start accepts. Automaton has 90494 states and 97854 transitions. Word has length 1107 [2023-04-01 23:40:37,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:37,755 INFO L495 AbstractCegarLoop]: Abstraction has 90494 states and 97854 transitions. [2023-04-01 23:40:37,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 170.2) internal successors, (851), 4 states have internal predecessors, (851), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-01 23:40:37,755 INFO L276 IsEmpty]: Start isEmpty. Operand 90494 states and 97854 transitions. [2023-04-01 23:40:37,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1635 [2023-04-01 23:40:37,821 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:37,822 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:40:37,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-01 23:40:38,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 23:40:38,029 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:38,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:38,030 INFO L85 PathProgramCache]: Analyzing trace with hash 883016083, now seen corresponding path program 1 times [2023-04-01 23:40:38,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:38,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879116304] [2023-04-01 23:40:38,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:38,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:40,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:40,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:40,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:40:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:40,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:40:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:40,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:40:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:40,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:40:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:40,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:40:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:40,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2023-04-01 23:40:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:40,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1070 [2023-04-01 23:40:40,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:41,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:40:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:42,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:40:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:42,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 1147 proven. 2 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2023-04-01 23:40:42,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:42,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879116304] [2023-04-01 23:40:42,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879116304] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:42,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154166350] [2023-04-01 23:40:42,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:42,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:42,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:42,389 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:42,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-01 23:40:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:42,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 2061 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 23:40:42,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:43,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 1571 proven. 2 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2023-04-01 23:40:43,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:40:46,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 349 proven. 229 refuted. 0 times theorem prover too weak. 1438 trivial. 0 not checked. [2023-04-01 23:40:46,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154166350] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:40:46,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:40:46,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-04-01 23:40:46,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174155838] [2023-04-01 23:40:46,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:40:46,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 23:40:46,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:46,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 23:40:46,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:40:46,276 INFO L87 Difference]: Start difference. First operand 90494 states and 97854 transitions. Second operand has 14 states, 14 states have (on average 134.92857142857142) internal successors, (1889), 12 states have internal predecessors, (1889), 7 states have call successors, (18), 6 states have call predecessors, (18), 8 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2023-04-01 23:40:57,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:57,657 INFO L93 Difference]: Finished difference Result 198901 states and 215457 transitions. [2023-04-01 23:40:57,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-04-01 23:40:57,657 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 134.92857142857142) internal successors, (1889), 12 states have internal predecessors, (1889), 7 states have call successors, (18), 6 states have call predecessors, (18), 8 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 1634 [2023-04-01 23:40:57,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:57,865 INFO L225 Difference]: With dead ends: 198901 [2023-04-01 23:40:57,865 INFO L226 Difference]: Without dead ends: 107709 [2023-04-01 23:40:57,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3421 GetRequests, 3341 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2247 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=982, Invalid=5498, Unknown=0, NotChecked=0, Total=6480 [2023-04-01 23:40:57,935 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 9446 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 11726 mSolverCounterSat, 1942 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9454 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 13668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1942 IncrementalHoareTripleChecker+Valid, 11726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:57,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9454 Valid, 444 Invalid, 13668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1942 Valid, 11726 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2023-04-01 23:40:58,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107709 states. [2023-04-01 23:40:59,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107709 to 100651. [2023-04-01 23:40:59,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100651 states, 99124 states have (on average 1.0276320568177233) internal successors, (101863), 99494 states have internal predecessors, (101863), 425 states have call successors, (425), 425 states have call predecessors, (425), 1101 states have return successors, (4945), 731 states have call predecessors, (4945), 424 states have call successors, (4945) [2023-04-01 23:40:59,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100651 states to 100651 states and 107233 transitions. [2023-04-01 23:40:59,405 INFO L78 Accepts]: Start accepts. Automaton has 100651 states and 107233 transitions. Word has length 1634 [2023-04-01 23:40:59,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:59,406 INFO L495 AbstractCegarLoop]: Abstraction has 100651 states and 107233 transitions. [2023-04-01 23:40:59,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 134.92857142857142) internal successors, (1889), 12 states have internal predecessors, (1889), 7 states have call successors, (18), 6 states have call predecessors, (18), 8 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2023-04-01 23:40:59,406 INFO L276 IsEmpty]: Start isEmpty. Operand 100651 states and 107233 transitions. [2023-04-01 23:40:59,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1843 [2023-04-01 23:40:59,781 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:59,797 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:40:59,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-01 23:41:00,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-01 23:41:00,018 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:41:00,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:41:00,018 INFO L85 PathProgramCache]: Analyzing trace with hash -173921233, now seen corresponding path program 1 times [2023-04-01 23:41:00,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:41:00,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314737012] [2023-04-01 23:41:00,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:00,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:41:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:00,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:41:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:00,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:41:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:00,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:01,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:41:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:01,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:41:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:01,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:01,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:41:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:01,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:41:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:01,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2023-04-01 23:41:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:01,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1326 [2023-04-01 23:41:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:01,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1422 [2023-04-01 23:41:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:01,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:01,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3530 backedges. 136 proven. 7 refuted. 0 times theorem prover too weak. 3387 trivial. 0 not checked. [2023-04-01 23:41:01,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:41:01,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314737012] [2023-04-01 23:41:01,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314737012] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:41:01,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327592500] [2023-04-01 23:41:01,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:01,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:41:01,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:41:01,364 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:41:01,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-01 23:41:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:01,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 2330 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:41:01,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:41:01,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3530 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 3387 trivial. 0 not checked. [2023-04-01 23:41:01,868 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:41:01,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327592500] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:41:01,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:41:01,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:41:01,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518668287] [2023-04-01 23:41:01,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:41:01,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:41:01,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:41:01,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:41:01,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:41:01,871 INFO L87 Difference]: Start difference. First operand 100651 states and 107233 transitions. Second operand has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-01 23:41:03,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:41:03,924 INFO L93 Difference]: Finished difference Result 199885 states and 212962 transitions. [2023-04-01 23:41:03,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:41:03,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 1842 [2023-04-01 23:41:03,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:41:04,321 INFO L225 Difference]: With dead ends: 199885 [2023-04-01 23:41:04,322 INFO L226 Difference]: Without dead ends: 99240 [2023-04-01 23:41:04,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1871 GetRequests, 1867 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:41:04,397 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 732 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 1920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:41:04,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 104 Invalid, 1920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1679 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 23:41:04,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99240 states. [2023-04-01 23:41:05,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99240 to 98529. [2023-04-01 23:41:05,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98529 states, 97027 states have (on average 1.0250651880404424) internal successors, (99459), 97392 states have internal predecessors, (99459), 416 states have call successors, (416), 416 states have call predecessors, (416), 1085 states have return successors, (4403), 720 states have call predecessors, (4403), 415 states have call successors, (4403) [2023-04-01 23:41:05,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98529 states to 98529 states and 104278 transitions. [2023-04-01 23:41:05,996 INFO L78 Accepts]: Start accepts. Automaton has 98529 states and 104278 transitions. Word has length 1842 [2023-04-01 23:41:05,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:41:05,997 INFO L495 AbstractCegarLoop]: Abstraction has 98529 states and 104278 transitions. [2023-04-01 23:41:05,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-01 23:41:05,997 INFO L276 IsEmpty]: Start isEmpty. Operand 98529 states and 104278 transitions. [2023-04-01 23:41:06,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1990 [2023-04-01 23:41:06,101 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:41:06,102 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:41:06,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-04-01 23:41:06,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-04-01 23:41:06,310 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:41:06,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:41:06,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1153823584, now seen corresponding path program 1 times [2023-04-01 23:41:06,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:41:06,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334072577] [2023-04-01 23:41:06,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:06,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:41:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:08,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:41:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:08,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:41:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:09,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:09,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:41:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:09,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:41:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:09,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:09,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:41:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:09,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:41:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:09,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2023-04-01 23:41:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:09,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1204 [2023-04-01 23:41:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:09,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1425 [2023-04-01 23:41:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:09,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:09,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:41:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:09,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3698 backedges. 924 proven. 260 refuted. 0 times theorem prover too weak. 2514 trivial. 0 not checked. [2023-04-01 23:41:09,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:41:09,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334072577] [2023-04-01 23:41:09,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334072577] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:41:09,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135880004] [2023-04-01 23:41:09,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:09,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:41:09,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:41:09,733 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:41:09,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-04-01 23:41:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:10,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 2493 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 23:41:10,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:41:10,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3698 backedges. 2332 proven. 2 refuted. 0 times theorem prover too weak. 1364 trivial. 0 not checked. [2023-04-01 23:41:10,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:41:14,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3698 backedges. 953 proven. 221 refuted. 0 times theorem prover too weak. 2524 trivial. 0 not checked. [2023-04-01 23:41:14,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135880004] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:41:14,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:41:14,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 17 [2023-04-01 23:41:14,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440262964] [2023-04-01 23:41:14,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:41:14,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-01 23:41:14,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:41:14,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-01 23:41:14,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-04-01 23:41:14,516 INFO L87 Difference]: Start difference. First operand 98529 states and 104278 transitions. Second operand has 17 states, 17 states have (on average 104.70588235294117) internal successors, (1780), 15 states have internal predecessors, (1780), 7 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2023-04-01 23:41:43,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:41:43,621 INFO L93 Difference]: Finished difference Result 226953 states and 241673 transitions. [2023-04-01 23:41:43,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2023-04-01 23:41:43,622 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 104.70588235294117) internal successors, (1780), 15 states have internal predecessors, (1780), 7 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) Word has length 1989 [2023-04-01 23:41:43,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:41:43,861 INFO L225 Difference]: With dead ends: 226953 [2023-04-01 23:41:43,861 INFO L226 Difference]: Without dead ends: 120646 [2023-04-01 23:41:43,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4388 GetRequests, 4183 SyntacticMatches, 1 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17651 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=4549, Invalid=37681, Unknown=0, NotChecked=0, Total=42230 [2023-04-01 23:41:43,917 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 24808 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 31150 mSolverCounterSat, 3128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24808 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 34278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3128 IncrementalHoareTripleChecker+Valid, 31150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:41:43,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24808 Valid, 1612 Invalid, 34278 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3128 Valid, 31150 Invalid, 0 Unknown, 0 Unchecked, 21.8s Time] [2023-04-01 23:41:43,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120646 states. [2023-04-01 23:41:45,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120646 to 116963. [2023-04-01 23:41:45,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116963 states, 115229 states have (on average 1.020307387897144) internal successors, (117569), 115640 states have internal predecessors, (117569), 494 states have call successors, (494), 494 states have call predecessors, (494), 1239 states have return successors, (4425), 828 states have call predecessors, (4425), 493 states have call successors, (4425) [2023-04-01 23:41:45,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116963 states to 116963 states and 122488 transitions. [2023-04-01 23:41:45,795 INFO L78 Accepts]: Start accepts. Automaton has 116963 states and 122488 transitions. Word has length 1989 [2023-04-01 23:41:45,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:41:45,796 INFO L495 AbstractCegarLoop]: Abstraction has 116963 states and 122488 transitions. [2023-04-01 23:41:45,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.70588235294117) internal successors, (1780), 15 states have internal predecessors, (1780), 7 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2023-04-01 23:41:45,796 INFO L276 IsEmpty]: Start isEmpty. Operand 116963 states and 122488 transitions. [2023-04-01 23:41:45,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2035 [2023-04-01 23:41:45,890 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:41:45,890 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:41:45,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-04-01 23:41:46,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-04-01 23:41:46,091 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:41:46,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:41:46,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1348243663, now seen corresponding path program 1 times [2023-04-01 23:41:46,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:41:46,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051984825] [2023-04-01 23:41:46,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:46,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:41:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:48,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:41:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:48,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:41:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:48,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:48,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:41:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:48,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:41:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:48,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:48,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:41:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:48,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:41:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:49,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2023-04-01 23:41:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:49,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1360 [2023-04-01 23:41:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:49,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1470 [2023-04-01 23:41:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:49,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:49,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:41:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:49,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3839 backedges. 1578 proven. 77 refuted. 0 times theorem prover too weak. 2184 trivial. 0 not checked. [2023-04-01 23:41:49,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:41:49,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051984825] [2023-04-01 23:41:49,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051984825] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:41:49,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599685188] [2023-04-01 23:41:49,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:49,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:41:49,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:41:49,681 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:41:49,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-04-01 23:41:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:50,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 2540 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:41:50,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:41:50,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3839 backedges. 1594 proven. 2 refuted. 0 times theorem prover too weak. 2243 trivial. 0 not checked. [2023-04-01 23:41:50,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:41:52,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3839 backedges. 1594 proven. 2 refuted. 0 times theorem prover too weak. 2243 trivial. 0 not checked. [2023-04-01 23:41:52,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599685188] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:41:52,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:41:52,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 16 [2023-04-01 23:41:52,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280416825] [2023-04-01 23:41:52,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:41:52,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-01 23:41:52,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:41:52,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-01 23:41:52,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:41:52,200 INFO L87 Difference]: Start difference. First operand 116963 states and 122488 transitions. Second operand has 16 states, 16 states have (on average 137.375) internal successors, (2198), 14 states have internal predecessors, (2198), 11 states have call successors, (23), 7 states have call predecessors, (23), 9 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) [2023-04-01 23:42:02,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:42:02,921 INFO L93 Difference]: Finished difference Result 233223 states and 244215 transitions. [2023-04-01 23:42:02,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-04-01 23:42:02,921 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 137.375) internal successors, (2198), 14 states have internal predecessors, (2198), 11 states have call successors, (23), 7 states have call predecessors, (23), 9 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) Word has length 2034 [2023-04-01 23:42:02,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:42:03,165 INFO L225 Difference]: With dead ends: 233223 [2023-04-01 23:42:03,165 INFO L226 Difference]: Without dead ends: 113437 [2023-04-01 23:42:03,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4161 GetRequests, 4119 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=334, Invalid=1306, Unknown=0, NotChecked=0, Total=1640 [2023-04-01 23:42:03,272 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 13543 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 18882 mSolverCounterSat, 888 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13543 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 19770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 888 IncrementalHoareTripleChecker+Valid, 18882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:42:03,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13543 Valid, 445 Invalid, 19770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [888 Valid, 18882 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-04-01 23:42:03,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113437 states. [2023-04-01 23:42:04,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113437 to 109895. [2023-04-01 23:42:04,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109895 states, 108240 states have (on average 1.0148835920177384) internal successors, (109851), 108642 states have internal predecessors, (109851), 464 states have call successors, (464), 464 states have call predecessors, (464), 1190 states have return successors, (3180), 788 states have call predecessors, (3180), 463 states have call successors, (3180) [2023-04-01 23:42:05,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109895 states to 109895 states and 113495 transitions. [2023-04-01 23:42:05,371 INFO L78 Accepts]: Start accepts. Automaton has 109895 states and 113495 transitions. Word has length 2034 [2023-04-01 23:42:05,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:42:05,372 INFO L495 AbstractCegarLoop]: Abstraction has 109895 states and 113495 transitions. [2023-04-01 23:42:05,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 137.375) internal successors, (2198), 14 states have internal predecessors, (2198), 11 states have call successors, (23), 7 states have call predecessors, (23), 9 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) [2023-04-01 23:42:05,373 INFO L276 IsEmpty]: Start isEmpty. Operand 109895 states and 113495 transitions. [2023-04-01 23:42:05,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2125 [2023-04-01 23:42:05,489 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:42:05,490 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:42:05,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-04-01 23:42:05,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:42:05,698 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:42:05,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:42:05,699 INFO L85 PathProgramCache]: Analyzing trace with hash 314553006, now seen corresponding path program 1 times [2023-04-01 23:42:05,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:42:05,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425023538] [2023-04-01 23:42:05,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:42:05,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:42:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:07,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:42:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:07,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:42:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:07,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:07,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:42:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:07,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:42:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:07,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:07,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:42:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:07,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:42:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:07,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2023-04-01 23:42:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:07,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1326 [2023-04-01 23:42:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:07,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1422 [2023-04-01 23:42:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:07,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1560 [2023-04-01 23:42:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:07,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:07,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:42:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:07,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4567 backedges. 923 proven. 155 refuted. 0 times theorem prover too weak. 3489 trivial. 0 not checked. [2023-04-01 23:42:07,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:42:07,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425023538] [2023-04-01 23:42:07,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425023538] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:42:07,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057937243] [2023-04-01 23:42:07,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:42:07,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:42:07,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:42:07,930 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:42:07,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-04-01 23:42:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:08,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 2673 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:42:08,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:42:08,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4567 backedges. 2442 proven. 2 refuted. 0 times theorem prover too weak. 2123 trivial. 0 not checked. [2023-04-01 23:42:08,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:42:09,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4567 backedges. 932 proven. 138 refuted. 0 times theorem prover too weak. 3497 trivial. 0 not checked. [2023-04-01 23:42:09,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057937243] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:42:09,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:42:09,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2023-04-01 23:42:09,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169107264] [2023-04-01 23:42:09,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:42:09,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 23:42:09,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:42:09,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 23:42:09,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:42:09,032 INFO L87 Difference]: Start difference. First operand 109895 states and 113495 transitions. Second operand has 14 states, 14 states have (on average 108.07142857142857) internal successors, (1513), 12 states have internal predecessors, (1513), 6 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-04-01 23:42:15,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:42:15,186 INFO L93 Difference]: Finished difference Result 219164 states and 226472 transitions. [2023-04-01 23:42:15,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-01 23:42:15,187 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 108.07142857142857) internal successors, (1513), 12 states have internal predecessors, (1513), 6 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 2124 [2023-04-01 23:42:15,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:42:15,417 INFO L225 Difference]: With dead ends: 219164 [2023-04-01 23:42:15,418 INFO L226 Difference]: Without dead ends: 109985 [2023-04-01 23:42:15,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4325 GetRequests, 4290 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=330, Invalid=930, Unknown=0, NotChecked=0, Total=1260 [2023-04-01 23:42:15,664 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 9452 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 7813 mSolverCounterSat, 1114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9452 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 8927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1114 IncrementalHoareTripleChecker+Valid, 7813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:42:15,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9452 Valid, 273 Invalid, 8927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1114 Valid, 7813 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-04-01 23:42:15,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109985 states. [2023-04-01 23:42:16,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109985 to 109878. [2023-04-01 23:42:16,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109878 states, 108230 states have (on average 1.0140534047861036) internal successors, (109751), 108628 states have internal predecessors, (109751), 464 states have call successors, (464), 464 states have call predecessors, (464), 1183 states have return successors, (3027), 785 states have call predecessors, (3027), 463 states have call successors, (3027) [2023-04-01 23:42:17,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109878 states to 109878 states and 113242 transitions. [2023-04-01 23:42:17,220 INFO L78 Accepts]: Start accepts. Automaton has 109878 states and 113242 transitions. Word has length 2124 [2023-04-01 23:42:17,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:42:17,221 INFO L495 AbstractCegarLoop]: Abstraction has 109878 states and 113242 transitions. [2023-04-01 23:42:17,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 108.07142857142857) internal successors, (1513), 12 states have internal predecessors, (1513), 6 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-04-01 23:42:17,221 INFO L276 IsEmpty]: Start isEmpty. Operand 109878 states and 113242 transitions. [2023-04-01 23:42:17,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2164 [2023-04-01 23:42:17,309 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:42:17,310 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:42:17,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-04-01 23:42:17,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-04-01 23:42:17,518 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:42:17,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:42:17,518 INFO L85 PathProgramCache]: Analyzing trace with hash 815962928, now seen corresponding path program 1 times [2023-04-01 23:42:17,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:42:17,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344447098] [2023-04-01 23:42:17,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:42:17,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:42:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:19,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:42:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:19,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:42:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:19,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:19,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:42:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:19,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:42:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:19,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:19,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:42:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:19,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:42:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:19,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2023-04-01 23:42:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:19,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:19,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1461 [2023-04-01 23:42:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:19,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1599 [2023-04-01 23:42:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:19,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:19,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:42:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:19,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 810 proven. 155 refuted. 0 times theorem prover too weak. 3260 trivial. 0 not checked. [2023-04-01 23:42:19,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:42:19,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344447098] [2023-04-01 23:42:19,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344447098] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:42:19,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727593186] [2023-04-01 23:42:19,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:42:19,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:42:19,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:42:19,593 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:42:19,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-04-01 23:42:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:20,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 2696 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:42:20,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:42:20,265 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 2371 proven. 2 refuted. 0 times theorem prover too weak. 1852 trivial. 0 not checked. [2023-04-01 23:42:20,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:42:20,673 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 818 proven. 141 refuted. 0 times theorem prover too weak. 3266 trivial. 0 not checked. [2023-04-01 23:42:20,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727593186] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:42:20,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:42:20,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 13 [2023-04-01 23:42:20,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345881184] [2023-04-01 23:42:20,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:42:20,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 23:42:20,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:42:20,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 23:42:20,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:42:20,680 INFO L87 Difference]: Start difference. First operand 109878 states and 113242 transitions. Second operand has 13 states, 13 states have (on average 116.07692307692308) internal successors, (1509), 11 states have internal predecessors, (1509), 5 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-04-01 23:42:28,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:42:28,785 INFO L93 Difference]: Finished difference Result 228095 states and 234782 transitions. [2023-04-01 23:42:28,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-01 23:42:28,786 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 116.07692307692308) internal successors, (1509), 11 states have internal predecessors, (1509), 5 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 2163 [2023-04-01 23:42:28,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:42:29,048 INFO L225 Difference]: With dead ends: 228095 [2023-04-01 23:42:29,049 INFO L226 Difference]: Without dead ends: 118933 [2023-04-01 23:42:29,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4400 GetRequests, 4367 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=240, Invalid=816, Unknown=0, NotChecked=0, Total=1056 [2023-04-01 23:42:29,137 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 8758 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 11454 mSolverCounterSat, 1642 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8758 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 13096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1642 IncrementalHoareTripleChecker+Valid, 11454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:42:29,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8758 Valid, 219 Invalid, 13096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1642 Valid, 11454 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-04-01 23:42:29,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118933 states. [2023-04-01 23:42:30,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118933 to 116074. [2023-04-01 23:42:30,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116074 states, 114136 states have (on average 1.0135540057475292) internal successors, (115683), 114680 states have internal predecessors, (115683), 488 states have call successors, (488), 488 states have call predecessors, (488), 1449 states have return successors, (3062), 905 states have call predecessors, (3062), 487 states have call successors, (3062) [2023-04-01 23:42:31,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116074 states to 116074 states and 119233 transitions. [2023-04-01 23:42:31,052 INFO L78 Accepts]: Start accepts. Automaton has 116074 states and 119233 transitions. Word has length 2163 [2023-04-01 23:42:31,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:42:31,053 INFO L495 AbstractCegarLoop]: Abstraction has 116074 states and 119233 transitions. [2023-04-01 23:42:31,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 116.07692307692308) internal successors, (1509), 11 states have internal predecessors, (1509), 5 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-04-01 23:42:31,053 INFO L276 IsEmpty]: Start isEmpty. Operand 116074 states and 119233 transitions. [2023-04-01 23:42:31,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2165 [2023-04-01 23:42:31,144 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:42:31,144 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:42:31,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-04-01 23:42:31,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:42:31,351 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:42:31,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:42:31,351 INFO L85 PathProgramCache]: Analyzing trace with hash -932087814, now seen corresponding path program 1 times [2023-04-01 23:42:31,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:42:31,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805236925] [2023-04-01 23:42:31,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:42:31,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:42:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:42:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:42:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:42:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:42:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:42:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:42:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1107 [2023-04-01 23:42:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1299 [2023-04-01 23:42:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1486 [2023-04-01 23:42:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1600 [2023-04-01 23:42:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:42:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4846 backedges. 851 proven. 113 refuted. 0 times theorem prover too weak. 3882 trivial. 0 not checked. [2023-04-01 23:42:32,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:42:32,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805236925] [2023-04-01 23:42:32,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805236925] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:42:32,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620123607] [2023-04-01 23:42:32,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:42:32,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:42:32,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:42:32,997 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:42:32,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-04-01 23:42:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:33,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:42:33,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:42:33,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4846 backedges. 2407 proven. 2 refuted. 0 times theorem prover too weak. 2437 trivial. 0 not checked. [2023-04-01 23:42:33,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:42:33,954 INFO L134 CoverageAnalysis]: Checked inductivity of 4846 backedges. 857 proven. 114 refuted. 0 times theorem prover too weak. 3875 trivial. 0 not checked. [2023-04-01 23:42:33,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620123607] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:42:33,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:42:33,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 9 [2023-04-01 23:42:33,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679199393] [2023-04-01 23:42:33,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:42:33,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 23:42:33,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:42:33,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 23:42:33,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-01 23:42:33,960 INFO L87 Difference]: Start difference. First operand 116074 states and 119233 transitions. Second operand has 9 states, 9 states have (on average 158.66666666666666) internal successors, (1428), 7 states have internal predecessors, (1428), 3 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-01 23:42:38,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:42:38,896 INFO L93 Difference]: Finished difference Result 237775 states and 244509 transitions. [2023-04-01 23:42:38,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 23:42:38,897 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 158.66666666666666) internal successors, (1428), 7 states have internal predecessors, (1428), 3 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 2164 [2023-04-01 23:42:38,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:42:39,316 INFO L225 Difference]: With dead ends: 237775 [2023-04-01 23:42:39,317 INFO L226 Difference]: Without dead ends: 122417 [2023-04-01 23:42:39,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4374 GetRequests, 4356 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:42:39,412 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 4198 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 6032 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4202 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 6574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 6032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:42:39,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4202 Valid, 97 Invalid, 6574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 6032 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-04-01 23:42:39,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122417 states. [2023-04-01 23:42:40,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122417 to 115261. [2023-04-01 23:42:40,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115261 states, 113375 states have (on average 1.0117486218302094) internal successors, (114707), 113892 states have internal predecessors, (114707), 485 states have call successors, (485), 485 states have call predecessors, (485), 1400 states have return successors, (2688), 883 states have call predecessors, (2688), 484 states have call successors, (2688) [2023-04-01 23:42:41,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115261 states to 115261 states and 117880 transitions. [2023-04-01 23:42:41,210 INFO L78 Accepts]: Start accepts. Automaton has 115261 states and 117880 transitions. Word has length 2164 [2023-04-01 23:42:41,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:42:41,211 INFO L495 AbstractCegarLoop]: Abstraction has 115261 states and 117880 transitions. [2023-04-01 23:42:41,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 158.66666666666666) internal successors, (1428), 7 states have internal predecessors, (1428), 3 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-01 23:42:41,212 INFO L276 IsEmpty]: Start isEmpty. Operand 115261 states and 117880 transitions. [2023-04-01 23:42:41,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2197 [2023-04-01 23:42:41,303 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:42:41,303 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 6, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:42:41,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-04-01 23:42:41,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:42:41,504 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:42:41,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:42:41,505 INFO L85 PathProgramCache]: Analyzing trace with hash 495437947, now seen corresponding path program 1 times [2023-04-01 23:42:41,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:42:41,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868715598] [2023-04-01 23:42:41,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:42:41,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:42:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat