/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/Problem13_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:43:37,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:43:37,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:43:37,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:43:38,041 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 22:43:38,062 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:43:38,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:43:38,063 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:43:38,063 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:43:38,065 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:43:38,065 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:43:38,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:43:38,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:43:38,065 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:43:38,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:43:38,066 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:43:38,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:43:38,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:43:38,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:43:38,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:43:38,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:43:38,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:43:38,067 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:43:38,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:43:38,068 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:43:38,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:43:38,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:43:38,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:43:38,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:43:38,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:43:38,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:43:38,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:43:38,072 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:43:38,073 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:43:38,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:43:38,073 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:43:38,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:43:38,073 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:43:38,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:43:38,073 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:43:38,073 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:43:38,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:43:38,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:43:38,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:43:38,281 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:43:38,281 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:43:38,282 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label31.c [2023-04-01 22:43:39,416 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:43:39,751 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:43:39,751 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label31.c [2023-04-01 22:43:39,786 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da2145e78/c9c0ae039b4741e78742def46524c382/FLAG431f7effb [2023-04-01 22:43:39,799 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da2145e78/c9c0ae039b4741e78742def46524c382 [2023-04-01 22:43:39,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:43:39,802 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:43:39,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:43:39,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:43:39,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:43:39,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:43:39" (1/1) ... [2023-04-01 22:43:39,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@164737a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:43:39, skipping insertion in model container [2023-04-01 22:43:39,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:43:39" (1/1) ... [2023-04-01 22:43:39,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:43:39,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:43:40,104 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/Problem13_label31.c[5792,5805] [2023-04-01 22:43:40,696 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:43:40,704 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:43:40,724 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/Problem13_label31.c[5792,5805] [2023-04-01 22:43:41,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:43:41,072 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:43:41,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:43:41 WrapperNode [2023-04-01 22:43:41,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:43:41,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:43:41,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:43:41,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:43:41,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:43:41" (1/1) ... [2023-04-01 22:43:41,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:43:41" (1/1) ... [2023-04-01 22:43:41,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:43:41" (1/1) ... [2023-04-01 22:43:41,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:43:41" (1/1) ... [2023-04-01 22:43:41,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:43:41" (1/1) ... [2023-04-01 22:43:41,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:43:41" (1/1) ... [2023-04-01 22:43:41,391 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:43:41" (1/1) ... [2023-04-01 22:43:41,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:43:41" (1/1) ... [2023-04-01 22:43:41,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:43:41,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:43:41,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:43:41,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:43:41,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:43:41" (1/1) ... [2023-04-01 22:43:41,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:43:41,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:43:41,471 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 22:43:41,488 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 22:43:41,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:43:41,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:43:41,506 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:43:41,506 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:43:41,507 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 22:43:41,507 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 22:43:41,507 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 22:43:41,507 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:43:41,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:43:41,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 22:43:41,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 22:43:41,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 22:43:41,507 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:43:41,507 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:43:41,507 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:43:41,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:43:41,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:43:41,507 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:43:41,508 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:43:41,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:43:41,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:43:41,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:43:41,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:43:41,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:43:41,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:43:41,568 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:43:41,569 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:43:45,237 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:43:45,250 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:43:45,250 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:43:45,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:43:45 BoogieIcfgContainer [2023-04-01 22:43:45,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:43:45,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:43:45,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:43:45,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:43:45,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:43:39" (1/3) ... [2023-04-01 22:43:45,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfdfe17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:43:45, skipping insertion in model container [2023-04-01 22:43:45,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:43:41" (2/3) ... [2023-04-01 22:43:45,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfdfe17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:43:45, skipping insertion in model container [2023-04-01 22:43:45,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:43:45" (3/3) ... [2023-04-01 22:43:45,259 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label31.c [2023-04-01 22:43:45,270 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:43:45,271 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:43:45,311 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:43:45,315 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;@1e09fe76, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:43:45,315 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:43:45,320 INFO L276 IsEmpty]: Start isEmpty. Operand has 1119 states, 1105 states have (on average 1.820814479638009) internal successors, (2012), 1106 states have internal predecessors, (2012), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 22:43:45,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-04-01 22:43:45,326 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:43:45,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:43:45,326 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:43:45,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:43:45,329 INFO L85 PathProgramCache]: Analyzing trace with hash 531734929, now seen corresponding path program 1 times [2023-04-01 22:43:45,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:43:45,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535277336] [2023-04-01 22:43:45,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:43:45,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:43:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:45,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:43:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:45,677 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 22:43:45,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:43:45,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535277336] [2023-04-01 22:43:45,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535277336] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:43:45,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:43:45,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 22:43:45,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257992273] [2023-04-01 22:43:45,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:43:45,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:43:45,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:43:45,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:43:45,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:43:45,714 INFO L87 Difference]: Start difference. First operand has 1119 states, 1105 states have (on average 1.820814479638009) internal successors, (2012), 1106 states have internal predecessors, (2012), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 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 22:43:53,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:43:53,137 INFO L93 Difference]: Finished difference Result 3977 states and 7430 transitions. [2023-04-01 22:43:53,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:43:53,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 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 46 [2023-04-01 22:43:53,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:43:53,162 INFO L225 Difference]: With dead ends: 3977 [2023-04-01 22:43:53,162 INFO L226 Difference]: Without dead ends: 2790 [2023-04-01 22:43:53,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:43:53,174 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 5692 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 5269 mSolverCounterSat, 2506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5692 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 7775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2506 IncrementalHoareTripleChecker+Valid, 5269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:43:53,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5692 Valid, 355 Invalid, 7775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2506 Valid, 5269 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-04-01 22:43:53,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2023-04-01 22:43:53,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 2758. [2023-04-01 22:43:53,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2758 states, 2718 states have (on average 1.5997056659308315) internal successors, (4348), 2721 states have internal predecessors, (4348), 14 states have call successors, (14), 14 states have call predecessors, (14), 25 states have return successors, (53), 22 states have call predecessors, (53), 13 states have call successors, (53) [2023-04-01 22:43:53,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2758 states to 2758 states and 4415 transitions. [2023-04-01 22:43:53,374 INFO L78 Accepts]: Start accepts. Automaton has 2758 states and 4415 transitions. Word has length 46 [2023-04-01 22:43:53,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:43:53,374 INFO L495 AbstractCegarLoop]: Abstraction has 2758 states and 4415 transitions. [2023-04-01 22:43:53,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 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 22:43:53,375 INFO L276 IsEmpty]: Start isEmpty. Operand 2758 states and 4415 transitions. [2023-04-01 22:43:53,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-04-01 22:43:53,378 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:43:53,379 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:43:53,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:43:53,379 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:43:53,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:43:53,380 INFO L85 PathProgramCache]: Analyzing trace with hash 153397089, now seen corresponding path program 1 times [2023-04-01 22:43:53,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:43:53,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326148505] [2023-04-01 22:43:53,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:43:53,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:43:53,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:53,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:43:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:53,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:43:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:53,706 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:43:53,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:43:53,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326148505] [2023-04-01 22:43:53,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326148505] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:43:53,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:43:53,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:43:53,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969710868] [2023-04-01 22:43:53,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:43:53,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:43:53,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:43:53,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:43:53,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:43:53,709 INFO L87 Difference]: Start difference. First operand 2758 states and 4415 transitions. Second operand has 8 states, 7 states have (on average 21.285714285714285) internal successors, (149), 5 states have internal predecessors, (149), 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 22:44:01,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:44:01,769 INFO L93 Difference]: Finished difference Result 10523 states and 17316 transitions. [2023-04-01 22:44:01,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:44:01,770 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 21.285714285714285) internal successors, (149), 5 states have internal predecessors, (149), 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 155 [2023-04-01 22:44:01,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:44:01,825 INFO L225 Difference]: With dead ends: 10523 [2023-04-01 22:44:01,825 INFO L226 Difference]: Without dead ends: 7771 [2023-04-01 22:44:01,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:44:01,838 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 4142 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 9974 mSolverCounterSat, 1776 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4142 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 11750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1776 IncrementalHoareTripleChecker+Valid, 9974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:44:01,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4142 Valid, 802 Invalid, 11750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1776 Valid, 9974 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-04-01 22:44:01,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7771 states. [2023-04-01 22:44:02,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7771 to 7754. [2023-04-01 22:44:02,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7754 states, 7602 states have (on average 1.3727966324651408) internal successors, (10436), 7623 states have internal predecessors, (10436), 38 states have call successors, (38), 38 states have call predecessors, (38), 113 states have return successors, (444), 92 states have call predecessors, (444), 37 states have call successors, (444) [2023-04-01 22:44:02,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7754 states to 7754 states and 10918 transitions. [2023-04-01 22:44:02,123 INFO L78 Accepts]: Start accepts. Automaton has 7754 states and 10918 transitions. Word has length 155 [2023-04-01 22:44:02,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:44:02,125 INFO L495 AbstractCegarLoop]: Abstraction has 7754 states and 10918 transitions. [2023-04-01 22:44:02,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 21.285714285714285) internal successors, (149), 5 states have internal predecessors, (149), 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 22:44:02,125 INFO L276 IsEmpty]: Start isEmpty. Operand 7754 states and 10918 transitions. [2023-04-01 22:44:02,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-04-01 22:44:02,135 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:44:02,143 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 22:44:02,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 22:44:02,143 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:44:02,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:44:02,144 INFO L85 PathProgramCache]: Analyzing trace with hash -172640424, now seen corresponding path program 1 times [2023-04-01 22:44:02,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:44:02,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528586628] [2023-04-01 22:44:02,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:02,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:44:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:02,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:44:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:02,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:44:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:02,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-04-01 22:44:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:02,620 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 78 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 22:44:02,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:44:02,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528586628] [2023-04-01 22:44:02,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528586628] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:44:02,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959991253] [2023-04-01 22:44:02,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:02,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:02,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:44:02,635 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 22:44:02,635 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 22:44:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:02,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 22:44:02,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:44:02,873 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-04-01 22:44:02,873 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:44:02,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959991253] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:44:02,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:44:02,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2023-04-01 22:44:02,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127135523] [2023-04-01 22:44:02,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:44:02,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:44:02,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:44:02,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:44:02,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:44:02,875 INFO L87 Difference]: Start difference. First operand 7754 states and 10918 transitions. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 4 states have internal predecessors, (172), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:44:07,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:44:07,335 INFO L93 Difference]: Finished difference Result 22466 states and 32893 transitions. [2023-04-01 22:44:07,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 22:44:07,336 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 4 states have internal predecessors, (172), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 218 [2023-04-01 22:44:07,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:44:07,386 INFO L225 Difference]: With dead ends: 22466 [2023-04-01 22:44:07,386 INFO L226 Difference]: Without dead ends: 14718 [2023-04-01 22:44:07,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:44:07,406 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 3131 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 4923 mSolverCounterSat, 1448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3131 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 6371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1448 IncrementalHoareTripleChecker+Valid, 4923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:44:07,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3131 Valid, 638 Invalid, 6371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1448 Valid, 4923 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-04-01 22:44:07,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14718 states. [2023-04-01 22:44:07,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14718 to 14577. [2023-04-01 22:44:07,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14577 states, 14222 states have (on average 1.269863591618619) internal successors, (18060), 14289 states have internal predecessors, (18060), 70 states have call successors, (70), 70 states have call predecessors, (70), 284 states have return successors, (1535), 217 states have call predecessors, (1535), 69 states have call successors, (1535) [2023-04-01 22:44:07,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14577 states to 14577 states and 19665 transitions. [2023-04-01 22:44:07,699 INFO L78 Accepts]: Start accepts. Automaton has 14577 states and 19665 transitions. Word has length 218 [2023-04-01 22:44:07,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:44:07,701 INFO L495 AbstractCegarLoop]: Abstraction has 14577 states and 19665 transitions. [2023-04-01 22:44:07,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 4 states have internal predecessors, (172), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:44:07,701 INFO L276 IsEmpty]: Start isEmpty. Operand 14577 states and 19665 transitions. [2023-04-01 22:44:07,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-04-01 22:44:07,704 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:44:07,704 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:07,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 22:44:07,909 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 22:44:07,910 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:44:07,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:44:07,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1150543617, now seen corresponding path program 1 times [2023-04-01 22:44:07,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:44:07,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628565606] [2023-04-01 22:44:07,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:07,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:44:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:08,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:44:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:08,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:44:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:08,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-01 22:44:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:08,663 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 79 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:44:08,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:44:08,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628565606] [2023-04-01 22:44:08,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628565606] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:44:08,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152289043] [2023-04-01 22:44:08,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:08,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:08,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:44:08,677 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 22:44:08,689 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 22:44:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:08,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:44:08,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:44:08,852 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-04-01 22:44:08,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:44:08,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152289043] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:44:08,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:44:08,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2023-04-01 22:44:08,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630495675] [2023-04-01 22:44:08,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:44:08,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:44:08,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:44:08,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:44:08,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:44:08,860 INFO L87 Difference]: Start difference. First operand 14577 states and 19665 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 22:44:11,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:44:11,450 INFO L93 Difference]: Finished difference Result 29149 states and 39437 transitions. [2023-04-01 22:44:11,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:44:11,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 255 [2023-04-01 22:44:11,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:44:11,492 INFO L225 Difference]: With dead ends: 29149 [2023-04-01 22:44:11,492 INFO L226 Difference]: Without dead ends: 14578 [2023-04-01 22:44:11,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:44:11,513 INFO L413 NwaCegarLoop]: 1414 mSDtfsCounter, 1188 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 2460 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 2908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 2460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:44:11,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 1520 Invalid, 2908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 2460 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-01 22:44:11,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14578 states. [2023-04-01 22:44:11,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14578 to 12971. [2023-04-01 22:44:11,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12971 states, 12632 states have (on average 1.2022640911969602) internal successors, (15187), 12699 states have internal predecessors, (15187), 62 states have call successors, (62), 62 states have call predecessors, (62), 276 states have return successors, (1055), 209 states have call predecessors, (1055), 61 states have call successors, (1055) [2023-04-01 22:44:11,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12971 states to 12971 states and 16304 transitions. [2023-04-01 22:44:11,725 INFO L78 Accepts]: Start accepts. Automaton has 12971 states and 16304 transitions. Word has length 255 [2023-04-01 22:44:11,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:44:11,726 INFO L495 AbstractCegarLoop]: Abstraction has 12971 states and 16304 transitions. [2023-04-01 22:44:11,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 22:44:11,727 INFO L276 IsEmpty]: Start isEmpty. Operand 12971 states and 16304 transitions. [2023-04-01 22:44:11,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2023-04-01 22:44:11,732 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:44:11,732 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:11,748 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 22:44:11,937 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 22:44:11,937 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:44:11,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:44:11,938 INFO L85 PathProgramCache]: Analyzing trace with hash -462033300, now seen corresponding path program 1 times [2023-04-01 22:44:11,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:44:11,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187439579] [2023-04-01 22:44:11,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:11,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:44:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:12,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:44:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:12,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:44:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:12,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 22:44:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:12,314 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:44:12,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:44:12,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187439579] [2023-04-01 22:44:12,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187439579] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:44:12,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564916369] [2023-04-01 22:44:12,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:12,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:12,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:44:12,315 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 22:44:12,356 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 22:44:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:12,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:44:12,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:44:12,642 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:44:12,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:44:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:44:13,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564916369] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:44:13,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:44:13,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 22:44:13,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130566204] [2023-04-01 22:44:13,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:44:13,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 22:44:13,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:44:13,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 22:44:13,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:44:13,121 INFO L87 Difference]: Start difference. First operand 12971 states and 16304 transitions. Second operand has 12 states, 12 states have (on average 56.0) internal successors, (672), 10 states have internal predecessors, (672), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 22:44:22,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:44:22,399 INFO L93 Difference]: Finished difference Result 34442 states and 45629 transitions. [2023-04-01 22:44:22,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 22:44:22,400 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 56.0) internal successors, (672), 10 states have internal predecessors, (672), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 319 [2023-04-01 22:44:22,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:44:22,462 INFO L225 Difference]: With dead ends: 34442 [2023-04-01 22:44:22,462 INFO L226 Difference]: Without dead ends: 21477 [2023-04-01 22:44:22,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 642 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2023-04-01 22:44:22,485 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 9435 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 13705 mSolverCounterSat, 2948 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9435 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 16653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2948 IncrementalHoareTripleChecker+Valid, 13705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:44:22,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9435 Valid, 1255 Invalid, 16653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2948 Valid, 13705 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2023-04-01 22:44:22,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21477 states. [2023-04-01 22:44:22,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21477 to 21330. [2023-04-01 22:44:22,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21330 states, 20501 states have (on average 1.1634554411979903) internal successors, (23852), 20728 states have internal predecessors, (23852), 98 states have call successors, (98), 98 states have call predecessors, (98), 730 states have return successors, (3250), 503 states have call predecessors, (3250), 97 states have call successors, (3250) [2023-04-01 22:44:22,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21330 states to 21330 states and 27200 transitions. [2023-04-01 22:44:22,886 INFO L78 Accepts]: Start accepts. Automaton has 21330 states and 27200 transitions. Word has length 319 [2023-04-01 22:44:22,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:44:22,886 INFO L495 AbstractCegarLoop]: Abstraction has 21330 states and 27200 transitions. [2023-04-01 22:44:22,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 56.0) internal successors, (672), 10 states have internal predecessors, (672), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 22:44:22,887 INFO L276 IsEmpty]: Start isEmpty. Operand 21330 states and 27200 transitions. [2023-04-01 22:44:22,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-04-01 22:44:22,893 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:44:22,893 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:22,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-01 22:44:23,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:23,099 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:44:23,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:44:23,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1523429240, now seen corresponding path program 1 times [2023-04-01 22:44:23,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:44:23,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145425995] [2023-04-01 22:44:23,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:23,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:44:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:23,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:44:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:23,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:44:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:23,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-01 22:44:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:23,374 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-04-01 22:44:23,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:44:23,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145425995] [2023-04-01 22:44:23,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145425995] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:44:23,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38677370] [2023-04-01 22:44:23,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:23,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:23,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:44:23,387 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 22:44:23,387 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 22:44:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:23,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 22:44:23,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:44:23,512 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-04-01 22:44:23,512 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:44:23,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38677370] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:44:23,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:44:23,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 22:44:23,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096508459] [2023-04-01 22:44:23,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:44:23,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:44:23,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:44:23,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:44:23,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:44:23,514 INFO L87 Difference]: Start difference. First operand 21330 states and 27200 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 22:44:26,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:44:26,849 INFO L93 Difference]: Finished difference Result 61381 states and 80445 transitions. [2023-04-01 22:44:26,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:44:26,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 323 [2023-04-01 22:44:26,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:44:26,948 INFO L225 Difference]: With dead ends: 61381 [2023-04-01 22:44:26,948 INFO L226 Difference]: Without dead ends: 39188 [2023-04-01 22:44:26,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 328 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:44:26,983 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1002 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 2642 mSolverCounterSat, 760 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 3402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 760 IncrementalHoareTripleChecker+Valid, 2642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:44:26,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 1755 Invalid, 3402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [760 Valid, 2642 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-01 22:44:27,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39188 states. [2023-04-01 22:44:27,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39188 to 35120. [2023-04-01 22:44:27,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35120 states, 34095 states have (on average 1.1423375861563279) internal successors, (38948), 34349 states have internal predecessors, (38948), 166 states have call successors, (166), 166 states have call predecessors, (166), 858 states have return successors, (5469), 604 states have call predecessors, (5469), 165 states have call successors, (5469) [2023-04-01 22:44:27,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35120 states to 35120 states and 44583 transitions. [2023-04-01 22:44:27,681 INFO L78 Accepts]: Start accepts. Automaton has 35120 states and 44583 transitions. Word has length 323 [2023-04-01 22:44:27,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:44:27,681 INFO L495 AbstractCegarLoop]: Abstraction has 35120 states and 44583 transitions. [2023-04-01 22:44:27,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 22:44:27,682 INFO L276 IsEmpty]: Start isEmpty. Operand 35120 states and 44583 transitions. [2023-04-01 22:44:27,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-04-01 22:44:27,688 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:44:27,688 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:27,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-04-01 22:44:27,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:27,893 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:44:27,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:44:27,893 INFO L85 PathProgramCache]: Analyzing trace with hash 651018678, now seen corresponding path program 1 times [2023-04-01 22:44:27,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:44:27,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654302241] [2023-04-01 22:44:27,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:27,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:44:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:28,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:44:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:28,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:44:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:28,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-01 22:44:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:28,272 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:44:28,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:44:28,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654302241] [2023-04-01 22:44:28,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654302241] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:44:28,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684207221] [2023-04-01 22:44:28,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:28,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:28,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:44:28,273 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 22:44:28,295 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 22:44:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:28,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:44:28,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:44:28,576 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:44:28,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:44:28,944 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:44:28,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684207221] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:44:28,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:44:28,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:44:28,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551194527] [2023-04-01 22:44:28,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:44:28,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:44:28,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:44:28,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:44:28,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:44:28,947 INFO L87 Difference]: Start difference. First operand 35120 states and 44583 transitions. Second operand has 11 states, 11 states have (on average 56.90909090909091) internal successors, (626), 9 states have internal predecessors, (626), 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 22:44:38,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:44:38,914 INFO L93 Difference]: Finished difference Result 78676 states and 105003 transitions. [2023-04-01 22:44:38,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-04-01 22:44:38,915 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 56.90909090909091) internal successors, (626), 9 states have internal predecessors, (626), 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 323 [2023-04-01 22:44:38,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:44:39,000 INFO L225 Difference]: With dead ends: 78676 [2023-04-01 22:44:39,000 INFO L226 Difference]: Without dead ends: 42661 [2023-04-01 22:44:39,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 661 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=390, Invalid=1590, Unknown=0, NotChecked=0, Total=1980 [2023-04-01 22:44:39,037 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 10639 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 16547 mSolverCounterSat, 1794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10644 SdHoareTripleChecker+Valid, 1432 SdHoareTripleChecker+Invalid, 18341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1794 IncrementalHoareTripleChecker+Valid, 16547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:44:39,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10644 Valid, 1432 Invalid, 18341 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1794 Valid, 16547 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2023-04-01 22:44:39,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42661 states. [2023-04-01 22:44:39,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42661 to 42287. [2023-04-01 22:44:39,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42287 states, 40940 states have (on average 1.0888617489008305) internal successors, (44578), 41293 states have internal predecessors, (44578), 240 states have call successors, (240), 198 states have call predecessors, (240), 1106 states have return successors, (6166), 795 states have call predecessors, (6166), 239 states have call successors, (6166) [2023-04-01 22:44:39,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42287 states to 42287 states and 50984 transitions. [2023-04-01 22:44:39,630 INFO L78 Accepts]: Start accepts. Automaton has 42287 states and 50984 transitions. Word has length 323 [2023-04-01 22:44:39,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:44:39,630 INFO L495 AbstractCegarLoop]: Abstraction has 42287 states and 50984 transitions. [2023-04-01 22:44:39,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 56.90909090909091) internal successors, (626), 9 states have internal predecessors, (626), 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 22:44:39,631 INFO L276 IsEmpty]: Start isEmpty. Operand 42287 states and 50984 transitions. [2023-04-01 22:44:39,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-04-01 22:44:39,639 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:44:39,639 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:39,659 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 22:44:39,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:39,845 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:44:39,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:44:39,845 INFO L85 PathProgramCache]: Analyzing trace with hash -2096491483, now seen corresponding path program 1 times [2023-04-01 22:44:39,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:44:39,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118132621] [2023-04-01 22:44:39,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:39,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:44:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:39,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:44:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:40,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:44:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:40,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 22:44:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:40,227 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-04-01 22:44:40,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:44:40,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118132621] [2023-04-01 22:44:40,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118132621] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:44:40,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715676034] [2023-04-01 22:44:40,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:40,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:40,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:44:40,229 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 22:44:40,253 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 22:44:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:40,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 22:44:40,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:44:40,394 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-04-01 22:44:40,394 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:44:40,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715676034] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:44:40,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:44:40,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 22:44:40,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655503915] [2023-04-01 22:44:40,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:44:40,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:44:40,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:44:40,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:44:40,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:44:40,395 INFO L87 Difference]: Start difference. First operand 42287 states and 50984 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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 22:44:43,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:44:43,366 INFO L93 Difference]: Finished difference Result 113124 states and 140652 transitions. [2023-04-01 22:44:43,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:44:43,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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 351 [2023-04-01 22:44:43,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:44:43,694 INFO L225 Difference]: With dead ends: 113124 [2023-04-01 22:44:43,694 INFO L226 Difference]: Without dead ends: 70035 [2023-04-01 22:44:43,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:44:43,744 INFO L413 NwaCegarLoop]: 1619 mSDtfsCounter, 976 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 763 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 1757 SdHoareTripleChecker+Invalid, 3104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 763 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:44:43,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 1757 Invalid, 3104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [763 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-01 22:44:43,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70035 states. [2023-04-01 22:44:44,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70035 to 65165. [2023-04-01 22:44:44,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65165 states, 63432 states have (on average 1.0718091814856854) internal successors, (67987), 63852 states have internal predecessors, (67987), 377 states have call successors, (377), 310 states have call predecessors, (377), 1355 states have return successors, (9615), 1002 states have call predecessors, (9615), 376 states have call successors, (9615) [2023-04-01 22:44:44,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65165 states to 65165 states and 77979 transitions. [2023-04-01 22:44:44,982 INFO L78 Accepts]: Start accepts. Automaton has 65165 states and 77979 transitions. Word has length 351 [2023-04-01 22:44:44,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:44:44,984 INFO L495 AbstractCegarLoop]: Abstraction has 65165 states and 77979 transitions. [2023-04-01 22:44:44,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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 22:44:44,984 INFO L276 IsEmpty]: Start isEmpty. Operand 65165 states and 77979 transitions. [2023-04-01 22:44:45,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-04-01 22:44:45,012 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:44:45,012 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:44:45,027 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 22:44:45,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:45,218 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:44:45,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:44:45,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1933157755, now seen corresponding path program 1 times [2023-04-01 22:44:45,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:44:45,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268692609] [2023-04-01 22:44:45,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:45,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:44:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:45,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:44:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:45,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:44:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:46,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-04-01 22:44:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:46,317 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 79 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:44:46,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:44:46,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268692609] [2023-04-01 22:44:46,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268692609] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:44:46,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753902790] [2023-04-01 22:44:46,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:46,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:46,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:44:46,318 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 22:44:46,360 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 22:44:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:46,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 22:44:46,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:44:46,658 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-04-01 22:44:46,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:44:46,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753902790] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:44:46,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:44:46,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-04-01 22:44:46,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104905043] [2023-04-01 22:44:46,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:44:46,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:44:46,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:44:46,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:44:46,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-04-01 22:44:46,660 INFO L87 Difference]: Start difference. First operand 65165 states and 77979 transitions. Second operand has 5 states, 5 states have (on average 70.0) internal successors, (350), 4 states have internal predecessors, (350), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:44:50,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:44:50,130 INFO L93 Difference]: Finished difference Result 122270 states and 145261 transitions. [2023-04-01 22:44:50,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:44:50,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 70.0) internal successors, (350), 4 states have internal predecessors, (350), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 396 [2023-04-01 22:44:50,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:44:50,368 INFO L225 Difference]: With dead ends: 122270 [2023-04-01 22:44:50,368 INFO L226 Difference]: Without dead ends: 65630 [2023-04-01 22:44:50,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:44:50,415 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 2265 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 5475 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2265 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 5633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 5475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:44:50,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2265 Valid, 591 Invalid, 5633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 5475 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-04-01 22:44:50,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65630 states. [2023-04-01 22:44:51,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65630 to 65541. [2023-04-01 22:44:51,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65541 states, 63657 states have (on average 1.0714768210880186) internal successors, (68207), 64153 states have internal predecessors, (68207), 377 states have call successors, (377), 310 states have call predecessors, (377), 1506 states have return successors, (10286), 1077 states have call predecessors, (10286), 376 states have call successors, (10286) [2023-04-01 22:44:51,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65541 states to 65541 states and 78870 transitions. [2023-04-01 22:44:51,492 INFO L78 Accepts]: Start accepts. Automaton has 65541 states and 78870 transitions. Word has length 396 [2023-04-01 22:44:51,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:44:51,492 INFO L495 AbstractCegarLoop]: Abstraction has 65541 states and 78870 transitions. [2023-04-01 22:44:51,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.0) internal successors, (350), 4 states have internal predecessors, (350), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:44:51,492 INFO L276 IsEmpty]: Start isEmpty. Operand 65541 states and 78870 transitions. [2023-04-01 22:44:51,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2023-04-01 22:44:51,503 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:44:51,503 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:51,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-04-01 22:44:51,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:51,709 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:44:51,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:44:51,709 INFO L85 PathProgramCache]: Analyzing trace with hash 26968718, now seen corresponding path program 1 times [2023-04-01 22:44:51,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:44:51,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477107862] [2023-04-01 22:44:51,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:51,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:44:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:52,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:44:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:52,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:44:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:52,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 22:44:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:52,408 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-04-01 22:44:52,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:44:52,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477107862] [2023-04-01 22:44:52,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477107862] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:44:52,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317545311] [2023-04-01 22:44:52,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:52,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:52,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:44:52,410 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 22:44:52,412 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 22:44:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:52,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-01 22:44:52,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:44:52,791 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-04-01 22:44:52,791 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:44:52,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317545311] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:44:52,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:44:52,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-04-01 22:44:52,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283301024] [2023-04-01 22:44:52,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:44:52,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:44:52,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:44:52,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:44:52,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:44:52,793 INFO L87 Difference]: Start difference. First operand 65541 states and 78870 transitions. Second operand has 5 states, 5 states have (on average 71.6) internal successors, (358), 4 states have internal predecessors, (358), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:44:56,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:44:56,797 INFO L93 Difference]: Finished difference Result 130476 states and 154924 transitions. [2023-04-01 22:44:56,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:44:56,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 71.6) internal successors, (358), 4 states have internal predecessors, (358), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 404 [2023-04-01 22:44:56,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:44:56,938 INFO L225 Difference]: With dead ends: 130476 [2023-04-01 22:44:56,938 INFO L226 Difference]: Without dead ends: 65744 [2023-04-01 22:44:56,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:44:56,999 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 2444 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 5297 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2444 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 5624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 5297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:44:57,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2444 Valid, 551 Invalid, 5624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 5297 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-01 22:44:57,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65744 states. [2023-04-01 22:44:57,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65744 to 65618. [2023-04-01 22:44:57,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65618 states, 63663 states have (on average 1.0713601306881548) internal successors, (68206), 64226 states have internal predecessors, (68206), 310 states have call successors, (310), 310 states have call predecessors, (310), 1644 states have return successors, (8055), 1081 states have call predecessors, (8055), 309 states have call successors, (8055) [2023-04-01 22:44:57,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65618 states to 65618 states and 76571 transitions. [2023-04-01 22:44:57,954 INFO L78 Accepts]: Start accepts. Automaton has 65618 states and 76571 transitions. Word has length 404 [2023-04-01 22:44:57,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:44:57,954 INFO L495 AbstractCegarLoop]: Abstraction has 65618 states and 76571 transitions. [2023-04-01 22:44:57,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.6) internal successors, (358), 4 states have internal predecessors, (358), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:44:57,955 INFO L276 IsEmpty]: Start isEmpty. Operand 65618 states and 76571 transitions. [2023-04-01 22:44:57,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2023-04-01 22:44:57,965 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:44:57,965 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-04-01 22:44:57,970 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 22:44:58,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-04-01 22:44:58,171 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:44:58,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:44:58,172 INFO L85 PathProgramCache]: Analyzing trace with hash -677493334, now seen corresponding path program 1 times [2023-04-01 22:44:58,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:44:58,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595052007] [2023-04-01 22:44:58,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:58,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:44:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:58,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:44:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:58,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:44:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:59,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-01 22:44:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:59,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2023-04-01 22:44:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:59,252 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 120 proven. 3 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-04-01 22:44:59,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:44:59,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595052007] [2023-04-01 22:44:59,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595052007] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:44:59,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12941627] [2023-04-01 22:44:59,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:59,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:59,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:44:59,269 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 22:44:59,276 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 22:44:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:59,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-01 22:44:59,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:44:59,836 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 361 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-04-01 22:44:59,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:45:01,226 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 122 proven. 277 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 22:45:01,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12941627] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:45:01,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:45:01,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 17 [2023-04-01 22:45:01,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226742584] [2023-04-01 22:45:01,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:45:01,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-01 22:45:01,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:45:01,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-01 22:45:01,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-04-01 22:45:01,229 INFO L87 Difference]: Start difference. First operand 65618 states and 76571 transitions. Second operand has 17 states, 17 states have (on average 56.35294117647059) internal successors, (958), 15 states have internal predecessors, (958), 7 states have call successors, (13), 11 states have call predecessors, (13), 8 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-01 22:45:28,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:45:28,781 INFO L93 Difference]: Finished difference Result 291777 states and 356870 transitions. [2023-04-01 22:45:28,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-04-01 22:45:28,782 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 56.35294117647059) internal successors, (958), 15 states have internal predecessors, (958), 7 states have call successors, (13), 11 states have call predecessors, (13), 8 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) Word has length 504 [2023-04-01 22:45:28,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:45:29,624 INFO L225 Difference]: With dead ends: 291777 [2023-04-01 22:45:29,625 INFO L226 Difference]: Without dead ends: 226967 [2023-04-01 22:45:29,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1174 GetRequests, 1080 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3362 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1909, Invalid=7021, Unknown=0, NotChecked=0, Total=8930 [2023-04-01 22:45:29,703 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 16440 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 23724 mSolverCounterSat, 10079 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16445 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 33803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10079 IncrementalHoareTripleChecker+Valid, 23724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:45:29,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16445 Valid, 1273 Invalid, 33803 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10079 Valid, 23724 Invalid, 0 Unknown, 0 Unchecked, 23.3s Time] [2023-04-01 22:45:29,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226967 states. [2023-04-01 22:45:32,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226967 to 188039. [2023-04-01 22:45:32,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188039 states, 184130 states have (on average 1.0657035789931026) internal successors, (196228), 185078 states have internal predecessors, (196228), 910 states have call successors, (910), 910 states have call predecessors, (910), 2998 states have return successors, (25859), 2050 states have call predecessors, (25859), 909 states have call successors, (25859) [2023-04-01 22:45:33,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188039 states to 188039 states and 222997 transitions. [2023-04-01 22:45:33,036 INFO L78 Accepts]: Start accepts. Automaton has 188039 states and 222997 transitions. Word has length 504 [2023-04-01 22:45:33,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:45:33,037 INFO L495 AbstractCegarLoop]: Abstraction has 188039 states and 222997 transitions. [2023-04-01 22:45:33,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 56.35294117647059) internal successors, (958), 15 states have internal predecessors, (958), 7 states have call successors, (13), 11 states have call predecessors, (13), 8 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-01 22:45:33,037 INFO L276 IsEmpty]: Start isEmpty. Operand 188039 states and 222997 transitions. [2023-04-01 22:45:33,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2023-04-01 22:45:33,242 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:45:33,242 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:45:33,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-04-01 22:45:33,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:45:33,448 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:45:33,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:45:33,448 INFO L85 PathProgramCache]: Analyzing trace with hash -2099947474, now seen corresponding path program 1 times [2023-04-01 22:45:33,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:45:33,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464249207] [2023-04-01 22:45:33,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:33,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:45:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:33,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:45:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:33,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:45:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:33,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-04-01 22:45:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:33,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2023-04-01 22:45:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:33,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2023-04-01 22:45:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:34,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:45:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:34,131 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 361 proven. 98 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked. [2023-04-01 22:45:34,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:45:34,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464249207] [2023-04-01 22:45:34,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464249207] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:45:34,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289970797] [2023-04-01 22:45:34,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:34,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:45:34,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:45:34,146 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 22:45:34,149 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 22:45:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:34,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:45:34,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:45:34,523 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 713 proven. 2 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-04-01 22:45:34,523 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:45:34,870 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 363 proven. 99 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2023-04-01 22:45:34,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289970797] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:45:34,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:45:34,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 22:45:34,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793025751] [2023-04-01 22:45:34,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:45:34,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 22:45:34,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:45:34,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 22:45:34,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:45:34,873 INFO L87 Difference]: Start difference. First operand 188039 states and 222997 transitions. Second operand has 12 states, 12 states have (on average 82.58333333333333) internal successors, (991), 10 states have internal predecessors, (991), 5 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-01 22:45:44,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:45:44,381 INFO L93 Difference]: Finished difference Result 377281 states and 448240 transitions. [2023-04-01 22:45:44,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-01 22:45:44,381 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 82.58333333333333) internal successors, (991), 10 states have internal predecessors, (991), 5 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 791 [2023-04-01 22:45:44,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:45:44,927 INFO L225 Difference]: With dead ends: 377281 [2023-04-01 22:45:44,927 INFO L226 Difference]: Without dead ends: 190872 [2023-04-01 22:45:45,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1628 GetRequests, 1602 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=185, Invalid=517, Unknown=0, NotChecked=0, Total=702 [2023-04-01 22:45:45,189 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 5832 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 14906 mSolverCounterSat, 1996 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5838 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 16902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1996 IncrementalHoareTripleChecker+Valid, 14906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:45:45,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5838 Valid, 1061 Invalid, 16902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1996 Valid, 14906 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-04-01 22:45:45,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190872 states. [2023-04-01 22:45:47,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190872 to 185054. [2023-04-01 22:45:47,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185054 states, 181086 states have (on average 1.0514838253647438) internal successors, (190409), 182087 states have internal predecessors, (190409), 894 states have call successors, (894), 894 states have call predecessors, (894), 3073 states have return successors, (20184), 2072 states have call predecessors, (20184), 893 states have call successors, (20184) [2023-04-01 22:45:48,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185054 states to 185054 states and 211487 transitions. [2023-04-01 22:45:48,394 INFO L78 Accepts]: Start accepts. Automaton has 185054 states and 211487 transitions. Word has length 791 [2023-04-01 22:45:48,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:45:48,394 INFO L495 AbstractCegarLoop]: Abstraction has 185054 states and 211487 transitions. [2023-04-01 22:45:48,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 82.58333333333333) internal successors, (991), 10 states have internal predecessors, (991), 5 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-01 22:45:48,395 INFO L276 IsEmpty]: Start isEmpty. Operand 185054 states and 211487 transitions. [2023-04-01 22:45:48,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2023-04-01 22:45:48,462 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:45:48,462 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:45:48,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-04-01 22:45:48,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-01 22:45:48,669 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:45:48,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:45:48,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1372613512, now seen corresponding path program 1 times [2023-04-01 22:45:48,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:45:48,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593661456] [2023-04-01 22:45:48,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:48,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:45:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:50,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:45:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:50,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:45:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:50,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-04-01 22:45:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:50,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2023-04-01 22:45:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:50,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2023-04-01 22:45:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:50,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:45:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:50,467 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 290 proven. 453 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-04-01 22:45:50,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:45:50,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593661456] [2023-04-01 22:45:50,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593661456] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:45:50,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353444391] [2023-04-01 22:45:50,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:50,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:45:50,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:45:50,468 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 22:45:50,470 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 22:45:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:50,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 22:45:50,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:45:50,776 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 665 trivial. 0 not checked. [2023-04-01 22:45:50,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:45:50,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353444391] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:45:50,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:45:50,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2023-04-01 22:45:50,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843034836] [2023-04-01 22:45:50,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:45:50,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:45:50,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:45:50,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:45:50,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:45:50,778 INFO L87 Difference]: Start difference. First operand 185054 states and 211487 transitions. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 22:45:54,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:45:54,674 INFO L93 Difference]: Finished difference Result 375784 states and 429272 transitions. [2023-04-01 22:45:54,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:45:54,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 792 [2023-04-01 22:45:54,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:45:55,234 INFO L225 Difference]: With dead ends: 375784 [2023-04-01 22:45:55,234 INFO L226 Difference]: Without dead ends: 193181 [2023-04-01 22:45:55,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 809 GetRequests, 799 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:45:55,361 INFO L413 NwaCegarLoop]: 1778 mSDtfsCounter, 789 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 2620 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 2687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:45:55,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 1948 Invalid, 2687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2620 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-01 22:45:55,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193181 states. [2023-04-01 22:45:57,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193181 to 193152. [2023-04-01 22:45:57,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193152 states, 189079 states have (on average 1.0501959498410718) internal successors, (198570), 190090 states have internal predecessors, (198570), 934 states have call successors, (934), 934 states have call predecessors, (934), 3138 states have return successors, (20566), 2127 states have call predecessors, (20566), 933 states have call successors, (20566) [2023-04-01 22:45:58,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193152 states to 193152 states and 220070 transitions. [2023-04-01 22:45:58,449 INFO L78 Accepts]: Start accepts. Automaton has 193152 states and 220070 transitions. Word has length 792 [2023-04-01 22:45:58,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:45:58,449 INFO L495 AbstractCegarLoop]: Abstraction has 193152 states and 220070 transitions. [2023-04-01 22:45:58,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 22:45:58,449 INFO L276 IsEmpty]: Start isEmpty. Operand 193152 states and 220070 transitions. [2023-04-01 22:45:58,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 935 [2023-04-01 22:45:58,530 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:45:58,531 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:45:58,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-04-01 22:45:58,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 22:45:58,736 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:45:58,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:45:58,737 INFO L85 PathProgramCache]: Analyzing trace with hash 58581099, now seen corresponding path program 1 times [2023-04-01 22:45:58,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:45:58,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177196226] [2023-04-01 22:45:58,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:45:58,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:45:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:59,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:45:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:59,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:45:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:59,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-04-01 22:45:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:59,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2023-04-01 22:45:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:59,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2023-04-01 22:45:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:45:59,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:45:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:00,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 290 proven. 580 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2023-04-01 22:46:00,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:46:00,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177196226] [2023-04-01 22:46:00,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177196226] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:46:00,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783791290] [2023-04-01 22:46:00,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:46:00,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:46:00,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:46:00,014 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 22:46:00,016 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 22:46:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:00,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 1285 conjuncts, 9 conjunts are in the unsatisfiable core [2023-04-01 22:46:00,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:46:00,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 609 proven. 38 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2023-04-01 22:46:00,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:46:01,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 645 proven. 2 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2023-04-01 22:46:01,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783791290] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:46:01,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:46:01,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2023-04-01 22:46:01,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831390132] [2023-04-01 22:46:01,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:46:01,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 22:46:01,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:46:01,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 22:46:01,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:46:01,581 INFO L87 Difference]: Start difference. First operand 193152 states and 220070 transitions. Second operand has 15 states, 15 states have (on average 107.0) internal successors, (1605), 13 states have internal predecessors, (1605), 8 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-04-01 22:46:24,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:46:24,856 INFO L93 Difference]: Finished difference Result 520471 states and 613977 transitions. [2023-04-01 22:46:24,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2023-04-01 22:46:24,857 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 107.0) internal successors, (1605), 13 states have internal predecessors, (1605), 8 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 934 [2023-04-01 22:46:24,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:46:25,601 INFO L225 Difference]: With dead ends: 520471 [2023-04-01 22:46:25,601 INFO L226 Difference]: Without dead ends: 320568 [2023-04-01 22:46:25,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2069 GetRequests, 1961 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4578 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1784, Invalid=10206, Unknown=0, NotChecked=0, Total=11990 [2023-04-01 22:46:25,864 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 24107 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 30186 mSolverCounterSat, 4727 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24111 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 34913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4727 IncrementalHoareTripleChecker+Valid, 30186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:46:25,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24111 Valid, 1565 Invalid, 34913 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4727 Valid, 30186 Invalid, 0 Unknown, 0 Unchecked, 17.9s Time] [2023-04-01 22:46:26,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320568 states. [2023-04-01 22:46:30,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320568 to 272912. [2023-04-01 22:46:30,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272912 states, 267940 states have (on average 1.0473128312308726) internal successors, (280617), 269003 states have internal predecessors, (280617), 1330 states have call successors, (1330), 1330 states have call predecessors, (1330), 3641 states have return successors, (28818), 2578 states have call predecessors, (28818), 1329 states have call successors, (28818) [2023-04-01 22:46:30,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272912 states to 272912 states and 310765 transitions. [2023-04-01 22:46:30,889 INFO L78 Accepts]: Start accepts. Automaton has 272912 states and 310765 transitions. Word has length 934 [2023-04-01 22:46:30,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:46:30,890 INFO L495 AbstractCegarLoop]: Abstraction has 272912 states and 310765 transitions. [2023-04-01 22:46:30,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 107.0) internal successors, (1605), 13 states have internal predecessors, (1605), 8 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-04-01 22:46:30,890 INFO L276 IsEmpty]: Start isEmpty. Operand 272912 states and 310765 transitions. [2023-04-01 22:46:30,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1257 [2023-04-01 22:46:30,972 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:46:30,973 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:46:30,985 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 22:46:31,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-01 22:46:31,179 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:46:31,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:46:31,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1649774226, now seen corresponding path program 1 times [2023-04-01 22:46:31,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:46:31,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320387050] [2023-04-01 22:46:31,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:46:31,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:46:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:32,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:46:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:32,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:46:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:32,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-01 22:46:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:32,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:46:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:32,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2023-04-01 22:46:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:32,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2023-04-01 22:46:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:32,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:46:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:32,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:46:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:32,893 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 366 proven. 105 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2023-04-01 22:46:32,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:46:32,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320387050] [2023-04-01 22:46:32,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320387050] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:46:32,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324310823] [2023-04-01 22:46:32,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:46:32,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:46:32,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:46:32,901 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 22:46:32,903 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 22:46:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:33,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 1672 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 22:46:33,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:46:33,488 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 839 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-04-01 22:46:33,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:46:33,951 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 368 proven. 106 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2023-04-01 22:46:33,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324310823] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:46:33,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:46:33,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 10 [2023-04-01 22:46:33,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135394204] [2023-04-01 22:46:33,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:46:33,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 22:46:33,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:46:33,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 22:46:33,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-04-01 22:46:33,956 INFO L87 Difference]: Start difference. First operand 272912 states and 310765 transitions. Second operand has 10 states, 10 states have (on average 168.6) internal successors, (1686), 8 states have internal predecessors, (1686), 4 states have call successors, (17), 6 states have call predecessors, (17), 5 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-01 22:46:43,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:46:43,719 INFO L93 Difference]: Finished difference Result 590993 states and 676733 transitions. [2023-04-01 22:46:43,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 22:46:43,720 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 168.6) internal successors, (1686), 8 states have internal predecessors, (1686), 4 states have call successors, (17), 6 states have call predecessors, (17), 5 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 1256 [2023-04-01 22:46:43,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:46:44,934 INFO L225 Difference]: With dead ends: 590993 [2023-04-01 22:46:44,934 INFO L226 Difference]: Without dead ends: 326938 [2023-04-01 22:46:45,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2553 GetRequests, 2534 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2023-04-01 22:46:45,124 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 12520 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 6261 mSolverCounterSat, 2839 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12520 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 9100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2839 IncrementalHoareTripleChecker+Valid, 6261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:46:45,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12520 Valid, 606 Invalid, 9100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2839 Valid, 6261 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-04-01 22:46:45,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326938 states. [2023-04-01 22:46:49,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326938 to 313061. [2023-04-01 22:46:49,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313061 states, 307681 states have (on average 1.0391671893942103) internal successors, (319732), 308749 states have internal predecessors, (319732), 1530 states have call successors, (1530), 1530 states have call predecessors, (1530), 3849 states have return successors, (26953), 2781 states have call predecessors, (26953), 1529 states have call successors, (26953) [2023-04-01 22:46:50,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313061 states to 313061 states and 348215 transitions. [2023-04-01 22:46:50,258 INFO L78 Accepts]: Start accepts. Automaton has 313061 states and 348215 transitions. Word has length 1256 [2023-04-01 22:46:50,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:46:50,258 INFO L495 AbstractCegarLoop]: Abstraction has 313061 states and 348215 transitions. [2023-04-01 22:46:50,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 168.6) internal successors, (1686), 8 states have internal predecessors, (1686), 4 states have call successors, (17), 6 states have call predecessors, (17), 5 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-01 22:46:50,259 INFO L276 IsEmpty]: Start isEmpty. Operand 313061 states and 348215 transitions. [2023-04-01 22:46:50,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1898 [2023-04-01 22:46:50,789 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:46:50,790 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:46:50,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-04-01 22:46:50,995 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,SelfDestructingSolverStorable14 [2023-04-01 22:46:50,996 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:46:50,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:46:50,996 INFO L85 PathProgramCache]: Analyzing trace with hash -289723395, now seen corresponding path program 1 times [2023-04-01 22:46:50,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:46:50,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402839581] [2023-04-01 22:46:50,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:46:50,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:46:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:53,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:46:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:53,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:46:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:53,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:46:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:53,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:46:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:53,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:46:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:53,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 797 [2023-04-01 22:46:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:53,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 890 [2023-04-01 22:46:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:53,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1036 [2023-04-01 22:46:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:53,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1168 [2023-04-01 22:46:53,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:53,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:46:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:54,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:46:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:54,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1944 backedges. 1253 proven. 14 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2023-04-01 22:46:54,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:46:54,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402839581] [2023-04-01 22:46:54,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402839581] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:46:54,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542603213] [2023-04-01 22:46:54,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:46:54,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:46:54,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:46:54,340 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 22:46:54,341 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 22:46:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:46:54,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 2408 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 22:46:54,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:46:55,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1944 backedges. 1262 proven. 2 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2023-04-01 22:46:55,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:46:56,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1944 backedges. 1262 proven. 2 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2023-04-01 22:46:56,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542603213] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:46:56,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:46:56,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 12 [2023-04-01 22:46:56,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916937936] [2023-04-01 22:46:56,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:46:56,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 22:46:56,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:46:56,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 22:46:56,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:46:56,906 INFO L87 Difference]: Start difference. First operand 313061 states and 348215 transitions. Second operand has 12 states, 12 states have (on average 240.16666666666666) internal successors, (2882), 10 states have internal predecessors, (2882), 8 states have call successors, (23), 7 states have call predecessors, (23), 5 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2023-04-01 22:47:03,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:47:03,604 INFO L93 Difference]: Finished difference Result 581616 states and 653423 transitions. [2023-04-01 22:47:03,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 22:47:03,605 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 240.16666666666666) internal successors, (2882), 10 states have internal predecessors, (2882), 8 states have call successors, (23), 7 states have call predecessors, (23), 5 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) Word has length 1897 [2023-04-01 22:47:03,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:47:03,609 INFO L225 Difference]: With dead ends: 581616 [2023-04-01 22:47:03,610 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 22:47:04,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3834 GetRequests, 3815 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2023-04-01 22:47:04,001 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 6309 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 6448 mSolverCounterSat, 1350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6309 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 7798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1350 IncrementalHoareTripleChecker+Valid, 6448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:47:04,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6309 Valid, 685 Invalid, 7798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1350 Valid, 6448 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-04-01 22:47:04,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 22:47:04,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 22:47:04,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 22:47:04,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 22:47:04,004 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1897 [2023-04-01 22:47:04,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:47:04,004 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 22:47:04,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 240.16666666666666) internal successors, (2882), 10 states have internal predecessors, (2882), 8 states have call successors, (23), 7 states have call predecessors, (23), 5 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2023-04-01 22:47:04,005 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 22:47:04,005 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 22:47:04,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 22:47:04,014 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 22:47:04,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:47:04,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.