/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/Problem12_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:33:15,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:33:15,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:33:15,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:33:15,527 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 22:33:15,554 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:33:15,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:33:15,555 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:33:15,555 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:33:15,556 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:33:15,557 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:33:15,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:33:15,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:33:15,557 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:33:15,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:33:15,558 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:33:15,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:33:15,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:33:15,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:33:15,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:33:15,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:33:15,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:33:15,559 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:33:15,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:33:15,560 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:33:15,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:33:15,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:33:15,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:33:15,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:33:15,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:33:15,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:33:15,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:33:15,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:33:15,561 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:33:15,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:33:15,562 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:33:15,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:33:15,562 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:33:15,562 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:33:15,562 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:33:15,562 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:33:15,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:33:15,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:33:15,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:33:15,837 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:33:15,838 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:33:15,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label52.c [2023-04-01 22:33:16,973 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:33:17,392 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:33:17,393 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label52.c [2023-04-01 22:33:17,426 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b1446dc7/79606750bf224f23835aff61296e98c7/FLAG832ddfb7e [2023-04-01 22:33:17,443 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b1446dc7/79606750bf224f23835aff61296e98c7 [2023-04-01 22:33:17,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:33:17,447 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:33:17,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:33:17,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:33:17,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:33:17,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:33:17" (1/1) ... [2023-04-01 22:33:17,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4deed25f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:33:17, skipping insertion in model container [2023-04-01 22:33:17,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:33:17" (1/1) ... [2023-04-01 22:33:17,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:33:17,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:33:17,831 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/Problem12_label52.c[3994,4007] [2023-04-01 22:33:18,561 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:33:18,577 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:33:18,606 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/Problem12_label52.c[3994,4007] [2023-04-01 22:33:18,940 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:33:18,960 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:33:18,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:33:18 WrapperNode [2023-04-01 22:33:18,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:33:18,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:33:18,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:33:18,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:33:18,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:33:18" (1/1) ... [2023-04-01 22:33:18,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:33:18" (1/1) ... [2023-04-01 22:33:19,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:33:18" (1/1) ... [2023-04-01 22:33:19,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:33:18" (1/1) ... [2023-04-01 22:33:19,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:33:18" (1/1) ... [2023-04-01 22:33:19,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:33:18" (1/1) ... [2023-04-01 22:33:19,237 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:33:18" (1/1) ... [2023-04-01 22:33:19,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:33:18" (1/1) ... [2023-04-01 22:33:19,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:33:19,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:33:19,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:33:19,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:33:19,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:33:18" (1/1) ... [2023-04-01 22:33:19,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:33:19,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:33:19,318 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 22:33:19,325 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 22:33:19,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:33:19,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:33:19,358 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:33:19,358 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:33:19,358 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 22:33:19,358 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 22:33:19,358 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 22:33:19,358 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:33:19,358 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:33:19,358 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 22:33:19,358 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 22:33:19,358 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 22:33:19,412 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:33:19,412 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:33:19,412 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:33:19,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:33:19,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:33:19,412 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:33:19,412 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:33:19,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:33:19,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:33:19,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:33:19,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:33:19,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:33:19,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:33:19,507 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:33:19,509 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:33:23,438 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:33:23,452 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:33:23,452 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:33:23,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:33:23 BoogieIcfgContainer [2023-04-01 22:33:23,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:33:23,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:33:23,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:33:23,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:33:23,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:33:17" (1/3) ... [2023-04-01 22:33:23,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c639937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:33:23, skipping insertion in model container [2023-04-01 22:33:23,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:33:18" (2/3) ... [2023-04-01 22:33:23,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c639937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:33:23, skipping insertion in model container [2023-04-01 22:33:23,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:33:23" (3/3) ... [2023-04-01 22:33:23,462 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label52.c [2023-04-01 22:33:23,477 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:33:23,477 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:33:23,548 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:33:23,554 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;@8f34693, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:33:23,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:33:23,562 INFO L276 IsEmpty]: Start isEmpty. Operand has 839 states, 825 states have (on average 1.907878787878788) internal successors, (1574), 826 states have internal predecessors, (1574), 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 22:33:23,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-04-01 22:33:23,570 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:33:23,571 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] [2023-04-01 22:33:23,571 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:33:23,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:33:23,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1579728995, now seen corresponding path program 1 times [2023-04-01 22:33:23,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:33:23,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118057757] [2023-04-01 22:33:23,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:33:23,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:33:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:24,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:33:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:24,139 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 22:33:24,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:33:24,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118057757] [2023-04-01 22:33:24,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118057757] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:33:24,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:33:24,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 22:33:24,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746492374] [2023-04-01 22:33:24,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:33:24,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:33:24,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:33:24,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:33:24,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:33:24,183 INFO L87 Difference]: Start difference. First operand has 839 states, 825 states have (on average 1.907878787878788) internal successors, (1574), 826 states have internal predecessors, (1574), 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 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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 22:33:29,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:33:29,603 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2023-04-01 22:33:29,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 22:33:29,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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 36 [2023-04-01 22:33:29,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:33:29,627 INFO L225 Difference]: With dead ends: 2471 [2023-04-01 22:33:29,628 INFO L226 Difference]: Without dead ends: 1568 [2023-04-01 22:33:29,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:33:29,640 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 3366 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3161 mSolverCounterSat, 2077 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3366 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 5238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2077 IncrementalHoareTripleChecker+Valid, 3161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:33:29,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3366 Valid, 33 Invalid, 5238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2077 Valid, 3161 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-04-01 22:33:29,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2023-04-01 22:33:29,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2023-04-01 22:33:29,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1553 states, 1529 states have (on average 1.856115107913669) internal successors, (2838), 1530 states have internal predecessors, (2838), 10 states have call successors, (10), 10 states have call predecessors, (10), 13 states have return successors, (21), 12 states have call predecessors, (21), 9 states have call successors, (21) [2023-04-01 22:33:29,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2869 transitions. [2023-04-01 22:33:29,763 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2869 transitions. Word has length 36 [2023-04-01 22:33:29,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:33:29,763 INFO L495 AbstractCegarLoop]: Abstraction has 1553 states and 2869 transitions. [2023-04-01 22:33:29,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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 22:33:29,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2869 transitions. [2023-04-01 22:33:29,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-01 22:33:29,769 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:33:29,770 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:29,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:33:29,770 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:33:29,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:33:29,771 INFO L85 PathProgramCache]: Analyzing trace with hash 2062968115, now seen corresponding path program 1 times [2023-04-01 22:33:29,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:33:29,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366964808] [2023-04-01 22:33:29,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:33:29,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:33:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:30,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:33:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:30,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:33:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:30,211 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:33:30,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:33:30,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366964808] [2023-04-01 22:33:30,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366964808] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:33:30,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:33:30,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:33:30,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267949705] [2023-04-01 22:33:30,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:33:30,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:33:30,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:33:30,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:33:30,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:33:30,214 INFO L87 Difference]: Start difference. First operand 1553 states and 2869 transitions. Second operand has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 4 states have internal predecessors, (107), 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 22:33:35,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:33:35,719 INFO L93 Difference]: Finished difference Result 4763 states and 8802 transitions. [2023-04-01 22:33:35,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 22:33:35,721 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 4 states have internal predecessors, (107), 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 113 [2023-04-01 22:33:35,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:33:35,735 INFO L225 Difference]: With dead ends: 4763 [2023-04-01 22:33:35,735 INFO L226 Difference]: Without dead ends: 3216 [2023-04-01 22:33:35,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:33:35,740 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 3154 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 5262 mSolverCounterSat, 936 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3154 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 6198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 936 IncrementalHoareTripleChecker+Valid, 5262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:33:35,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3154 Valid, 115 Invalid, 6198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [936 Valid, 5262 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-04-01 22:33:35,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3216 states. [2023-04-01 22:33:35,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3216 to 3139. [2023-04-01 22:33:35,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3139 states, 3080 states have (on average 1.6376623376623376) internal successors, (5044), 3086 states have internal predecessors, (5044), 18 states have call successors, (18), 18 states have call predecessors, (18), 40 states have return successors, (85), 34 states have call predecessors, (85), 17 states have call successors, (85) [2023-04-01 22:33:35,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 5147 transitions. [2023-04-01 22:33:35,864 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 5147 transitions. Word has length 113 [2023-04-01 22:33:35,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:33:35,867 INFO L495 AbstractCegarLoop]: Abstraction has 3139 states and 5147 transitions. [2023-04-01 22:33:35,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 4 states have internal predecessors, (107), 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 22:33:35,867 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 5147 transitions. [2023-04-01 22:33:35,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-04-01 22:33:35,875 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:33:35,875 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:35,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 22:33:35,876 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:33:35,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:33:35,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1523630328, now seen corresponding path program 1 times [2023-04-01 22:33:35,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:33:35,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406710462] [2023-04-01 22:33:35,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:33:35,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:33:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:36,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:33:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:36,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:33:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:36,200 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:33:36,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:33:36,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406710462] [2023-04-01 22:33:36,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406710462] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:33:36,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:33:36,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:33:36,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808945954] [2023-04-01 22:33:36,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:33:36,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:33:36,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:33:36,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:33:36,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:33:36,206 INFO L87 Difference]: Start difference. First operand 3139 states and 5147 transitions. Second operand has 7 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 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 22:33:41,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:33:41,164 INFO L93 Difference]: Finished difference Result 9827 states and 16306 transitions. [2023-04-01 22:33:41,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 22:33:41,165 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 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 126 [2023-04-01 22:33:41,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:33:41,194 INFO L225 Difference]: With dead ends: 9827 [2023-04-01 22:33:41,195 INFO L226 Difference]: Without dead ends: 6694 [2023-04-01 22:33:41,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:33:41,205 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 5425 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 4564 mSolverCounterSat, 1185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5425 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 5749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1185 IncrementalHoareTripleChecker+Valid, 4564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:33:41,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5425 Valid, 139 Invalid, 5749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1185 Valid, 4564 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-04-01 22:33:41,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6694 states. [2023-04-01 22:33:41,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6694 to 6473. [2023-04-01 22:33:41,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6473 states, 6282 states have (on average 1.4186564788283986) internal successors, (8912), 6322 states have internal predecessors, (8912), 34 states have call successors, (34), 34 states have call predecessors, (34), 156 states have return successors, (437), 116 states have call predecessors, (437), 33 states have call successors, (437) [2023-04-01 22:33:41,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6473 states to 6473 states and 9383 transitions. [2023-04-01 22:33:41,415 INFO L78 Accepts]: Start accepts. Automaton has 6473 states and 9383 transitions. Word has length 126 [2023-04-01 22:33:41,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:33:41,415 INFO L495 AbstractCegarLoop]: Abstraction has 6473 states and 9383 transitions. [2023-04-01 22:33:41,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 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 22:33:41,416 INFO L276 IsEmpty]: Start isEmpty. Operand 6473 states and 9383 transitions. [2023-04-01 22:33:41,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-04-01 22:33:41,422 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:33:41,422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:41,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 22:33:41,422 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:33:41,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:33:41,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1430514908, now seen corresponding path program 1 times [2023-04-01 22:33:41,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:33:41,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072719822] [2023-04-01 22:33:41,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:33:41,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:33:41,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:41,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:33:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:41,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:33:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:41,826 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:33:41,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:33:41,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072719822] [2023-04-01 22:33:41,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072719822] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:33:41,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:33:41,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:33:41,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923657836] [2023-04-01 22:33:41,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:33:41,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:33:41,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:33:41,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:33:41,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:33:41,830 INFO L87 Difference]: Start difference. First operand 6473 states and 9383 transitions. Second operand has 8 states, 7 states have (on average 22.0) internal successors, (154), 5 states have internal predecessors, (154), 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 22:33:48,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:33:48,305 INFO L93 Difference]: Finished difference Result 26175 states and 40156 transitions. [2023-04-01 22:33:48,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 22:33:48,305 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 22.0) internal successors, (154), 5 states have internal predecessors, (154), 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 160 [2023-04-01 22:33:48,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:33:48,394 INFO L225 Difference]: With dead ends: 26175 [2023-04-01 22:33:48,394 INFO L226 Difference]: Without dead ends: 19708 [2023-04-01 22:33:48,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:33:48,421 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 9413 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 2469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9413 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 7823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2469 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:33:48,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9413 Valid, 134 Invalid, 7823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2469 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-04-01 22:33:48,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19708 states. [2023-04-01 22:33:48,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19708 to 18774. [2023-04-01 22:33:48,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18774 states, 18159 states have (on average 1.2937386419957047) internal successors, (23493), 18315 states have internal predecessors, (23493), 94 states have call successors, (94), 94 states have call predecessors, (94), 520 states have return successors, (2642), 364 states have call predecessors, (2642), 93 states have call successors, (2642) [2023-04-01 22:33:48,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18774 states to 18774 states and 26229 transitions. [2023-04-01 22:33:48,923 INFO L78 Accepts]: Start accepts. Automaton has 18774 states and 26229 transitions. Word has length 160 [2023-04-01 22:33:48,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:33:48,924 INFO L495 AbstractCegarLoop]: Abstraction has 18774 states and 26229 transitions. [2023-04-01 22:33:48,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 22.0) internal successors, (154), 5 states have internal predecessors, (154), 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 22:33:48,925 INFO L276 IsEmpty]: Start isEmpty. Operand 18774 states and 26229 transitions. [2023-04-01 22:33:48,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-04-01 22:33:48,926 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:33:48,927 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:48,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 22:33:48,927 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:33:48,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:33:48,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1222066965, now seen corresponding path program 1 times [2023-04-01 22:33:48,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:33:48,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933379814] [2023-04-01 22:33:48,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:33:48,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:33:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:49,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:33:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:49,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:33:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:49,428 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 22:33:49,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:33:49,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933379814] [2023-04-01 22:33:49,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933379814] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:33:49,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995715866] [2023-04-01 22:33:49,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:33:49,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:33:49,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:33:49,445 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 22:33:49,467 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 22:33:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:49,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:33:49,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:33:49,681 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:33:49,681 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:33:49,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995715866] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:33:49,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:33:49,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2023-04-01 22:33:49,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952670447] [2023-04-01 22:33:49,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:33:49,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:33:49,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:33:49,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:33:49,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:33:49,684 INFO L87 Difference]: Start difference. First operand 18774 states and 26229 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:33:53,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:33:53,298 INFO L93 Difference]: Finished difference Result 55544 states and 80629 transitions. [2023-04-01 22:33:53,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:33:53,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 181 [2023-04-01 22:33:53,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:33:53,429 INFO L225 Difference]: With dead ends: 55544 [2023-04-01 22:33:53,430 INFO L226 Difference]: Without dead ends: 36776 [2023-04-01 22:33:53,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:33:53,473 INFO L413 NwaCegarLoop]: 639 mSDtfsCounter, 762 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 2417 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 3002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 2417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:33:53,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 663 Invalid, 3002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 2417 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-01 22:33:53,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36776 states. [2023-04-01 22:33:54,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36776 to 33671. [2023-04-01 22:33:54,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33671 states, 32777 states have (on average 1.2328462031302438) internal successors, (40409), 32990 states have internal predecessors, (40409), 170 states have call successors, (170), 170 states have call predecessors, (170), 723 states have return successors, (5574), 510 states have call predecessors, (5574), 169 states have call successors, (5574) [2023-04-01 22:33:54,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33671 states to 33671 states and 46153 transitions. [2023-04-01 22:33:54,448 INFO L78 Accepts]: Start accepts. Automaton has 33671 states and 46153 transitions. Word has length 181 [2023-04-01 22:33:54,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:33:54,449 INFO L495 AbstractCegarLoop]: Abstraction has 33671 states and 46153 transitions. [2023-04-01 22:33:54,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:33:54,449 INFO L276 IsEmpty]: Start isEmpty. Operand 33671 states and 46153 transitions. [2023-04-01 22:33:54,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-04-01 22:33:54,453 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:33:54,453 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:33:54,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 22:33:54,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:33:54,660 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:33:54,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:33:54,661 INFO L85 PathProgramCache]: Analyzing trace with hash -453237034, now seen corresponding path program 1 times [2023-04-01 22:33:54,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:33:54,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506781242] [2023-04-01 22:33:54,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:33:54,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:33:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:54,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:33:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:54,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:33:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:55,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:33:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:55,166 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:33:55,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:33:55,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506781242] [2023-04-01 22:33:55,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506781242] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:33:55,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056411764] [2023-04-01 22:33:55,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:33:55,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:33:55,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:33:55,169 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 22:33:55,196 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 22:33:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:33:55,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:33:55,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:33:55,459 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:33:55,459 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:33:55,757 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:33:55,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056411764] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:33:55,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:33:55,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 22:33:55,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163391195] [2023-04-01 22:33:55,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:33:55,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 22:33:55,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:33:55,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 22:33:55,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:33:55,762 INFO L87 Difference]: Start difference. First operand 33671 states and 46153 transitions. Second operand has 12 states, 12 states have (on average 37.0) internal successors, (444), 10 states have internal predecessors, (444), 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 22:34:05,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:34:05,484 INFO L93 Difference]: Finished difference Result 88049 states and 124843 transitions. [2023-04-01 22:34:05,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 22:34:05,485 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 37.0) internal successors, (444), 10 states have internal predecessors, (444), 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 271 [2023-04-01 22:34:05,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:34:05,708 INFO L225 Difference]: With dead ends: 88049 [2023-04-01 22:34:05,708 INFO L226 Difference]: Without dead ends: 54384 [2023-04-01 22:34:05,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 544 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2023-04-01 22:34:05,766 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 3263 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 13396 mSolverCounterSat, 1712 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3263 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 15108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1712 IncrementalHoareTripleChecker+Valid, 13396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-04-01 22:34:05,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3263 Valid, 252 Invalid, 15108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1712 Valid, 13396 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-04-01 22:34:05,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54384 states. [2023-04-01 22:34:06,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54384 to 52721. [2023-04-01 22:34:06,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52721 states, 51095 states have (on average 1.189881593110872) internal successors, (60797), 51543 states have internal predecessors, (60797), 262 states have call successors, (262), 262 states have call predecessors, (262), 1363 states have return successors, (10481), 915 states have call predecessors, (10481), 261 states have call successors, (10481) [2023-04-01 22:34:07,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52721 states to 52721 states and 71540 transitions. [2023-04-01 22:34:07,482 INFO L78 Accepts]: Start accepts. Automaton has 52721 states and 71540 transitions. Word has length 271 [2023-04-01 22:34:07,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:34:07,483 INFO L495 AbstractCegarLoop]: Abstraction has 52721 states and 71540 transitions. [2023-04-01 22:34:07,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 37.0) internal successors, (444), 10 states have internal predecessors, (444), 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 22:34:07,483 INFO L276 IsEmpty]: Start isEmpty. Operand 52721 states and 71540 transitions. [2023-04-01 22:34:07,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-04-01 22:34:07,487 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:34:07,487 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:34:07,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 22:34:07,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-01 22:34:07,695 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:34:07,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:34:07,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1958167822, now seen corresponding path program 1 times [2023-04-01 22:34:07,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:34:07,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947464487] [2023-04-01 22:34:07,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:34:07,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:34:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:07,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:34:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:07,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:34:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:08,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:34:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:08,048 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-04-01 22:34:08,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:34:08,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947464487] [2023-04-01 22:34:08,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947464487] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:34:08,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960034705] [2023-04-01 22:34:08,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:34:08,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:34:08,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:34:08,055 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 22:34:08,058 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 22:34:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:08,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:34:08,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:34:08,238 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-04-01 22:34:08,238 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:34:08,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960034705] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:34:08,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:34:08,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:34:08,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995974501] [2023-04-01 22:34:08,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:34:08,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:34:08,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:34:08,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:34:08,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:34:08,241 INFO L87 Difference]: Start difference. First operand 52721 states and 71540 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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 22:34:11,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:34:11,681 INFO L93 Difference]: Finished difference Result 128021 states and 179731 transitions. [2023-04-01 22:34:11,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:34:11,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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 275 [2023-04-01 22:34:11,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:34:12,038 INFO L225 Difference]: With dead ends: 128021 [2023-04-01 22:34:12,038 INFO L226 Difference]: Without dead ends: 75306 [2023-04-01 22:34:12,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:34:12,108 INFO L413 NwaCegarLoop]: 1333 mSDtfsCounter, 803 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2159 mSolverCounterSat, 774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 2933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 774 IncrementalHoareTripleChecker+Valid, 2159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:34:12,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 1365 Invalid, 2933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [774 Valid, 2159 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-04-01 22:34:12,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75306 states. [2023-04-01 22:34:13,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75306 to 74539. [2023-04-01 22:34:13,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74539 states, 72552 states have (on average 1.1632484287131988) internal successors, (84396), 73069 states have internal predecessors, (84396), 374 states have call successors, (374), 374 states have call predecessors, (374), 1612 states have return successors, (14602), 1095 states have call predecessors, (14602), 373 states have call successors, (14602) [2023-04-01 22:34:13,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74539 states to 74539 states and 99372 transitions. [2023-04-01 22:34:13,572 INFO L78 Accepts]: Start accepts. Automaton has 74539 states and 99372 transitions. Word has length 275 [2023-04-01 22:34:13,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:34:13,573 INFO L495 AbstractCegarLoop]: Abstraction has 74539 states and 99372 transitions. [2023-04-01 22:34:13,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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 22:34:13,573 INFO L276 IsEmpty]: Start isEmpty. Operand 74539 states and 99372 transitions. [2023-04-01 22:34:13,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2023-04-01 22:34:13,578 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:34:13,579 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:34:13,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 22:34:13,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:34:13,785 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:34:13,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:34:13,786 INFO L85 PathProgramCache]: Analyzing trace with hash 289758721, now seen corresponding path program 1 times [2023-04-01 22:34:13,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:34:13,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764171015] [2023-04-01 22:34:13,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:34:13,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:34:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:14,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:34:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:14,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:34:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:14,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:34:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:14,745 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 56 proven. 8 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-04-01 22:34:14,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:34:14,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764171015] [2023-04-01 22:34:14,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764171015] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:34:14,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905839752] [2023-04-01 22:34:14,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:34:14,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:34:14,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:34:14,748 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 22:34:14,772 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 22:34:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:14,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:34:14,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:34:14,939 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-04-01 22:34:14,940 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:34:14,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905839752] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:34:14,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:34:14,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2023-04-01 22:34:14,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254210491] [2023-04-01 22:34:14,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:34:14,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:34:14,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:34:14,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:34:14,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:34:14,943 INFO L87 Difference]: Start difference. First operand 74539 states and 99372 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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 22:34:18,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:34:18,088 INFO L93 Difference]: Finished difference Result 149072 states and 199361 transitions. [2023-04-01 22:34:18,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:34:18,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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 300 [2023-04-01 22:34:18,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:34:18,321 INFO L225 Difference]: With dead ends: 149072 [2023-04-01 22:34:18,322 INFO L226 Difference]: Without dead ends: 74539 [2023-04-01 22:34:18,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:34:18,426 INFO L413 NwaCegarLoop]: 1056 mSDtfsCounter, 810 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2375 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 2793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 2375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:34:18,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 1088 Invalid, 2793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 2375 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-01 22:34:18,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74539 states. [2023-04-01 22:34:19,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74539 to 74539. [2023-04-01 22:34:19,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74539 states, 72552 states have (on average 1.1220090417907156) internal successors, (81404), 73069 states have internal predecessors, (81404), 374 states have call successors, (374), 374 states have call predecessors, (374), 1612 states have return successors, (11764), 1095 states have call predecessors, (11764), 373 states have call successors, (11764) [2023-04-01 22:34:19,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74539 states to 74539 states and 93542 transitions. [2023-04-01 22:34:19,852 INFO L78 Accepts]: Start accepts. Automaton has 74539 states and 93542 transitions. Word has length 300 [2023-04-01 22:34:19,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:34:19,853 INFO L495 AbstractCegarLoop]: Abstraction has 74539 states and 93542 transitions. [2023-04-01 22:34:19,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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 22:34:19,853 INFO L276 IsEmpty]: Start isEmpty. Operand 74539 states and 93542 transitions. [2023-04-01 22:34:19,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2023-04-01 22:34:19,865 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:34:19,865 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:34:19,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 22:34:20,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:34:20,072 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:34:20,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:34:20,073 INFO L85 PathProgramCache]: Analyzing trace with hash -610801096, now seen corresponding path program 1 times [2023-04-01 22:34:20,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:34:20,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781800199] [2023-04-01 22:34:20,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:34:20,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:34:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:20,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:34:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:20,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:34:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:20,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:34:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:20,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-04-01 22:34:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:20,773 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 278 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-01 22:34:20,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:34:20,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781800199] [2023-04-01 22:34:20,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781800199] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:34:20,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846440407] [2023-04-01 22:34:20,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:34:20,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:34:20,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:34:20,777 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 22:34:20,780 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 22:34:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:21,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:34:21,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:34:21,216 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:34:21,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:34:21,581 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:34:21,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846440407] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:34:21,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:34:21,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:34:21,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536645713] [2023-04-01 22:34:21,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:34:21,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:34:21,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:34:21,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:34:21,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:34:21,585 INFO L87 Difference]: Start difference. First operand 74539 states and 93542 transitions. Second operand has 11 states, 11 states have (on average 48.36363636363637) internal successors, (532), 9 states have internal predecessors, (532), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 22:34:33,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:34:33,740 INFO L93 Difference]: Finished difference Result 180988 states and 229090 transitions. [2023-04-01 22:34:33,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-04-01 22:34:33,740 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 48.36363636363637) internal successors, (532), 9 states have internal predecessors, (532), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 376 [2023-04-01 22:34:33,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:34:33,988 INFO L225 Difference]: With dead ends: 180988 [2023-04-01 22:34:33,988 INFO L226 Difference]: Without dead ends: 99807 [2023-04-01 22:34:34,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 831 GetRequests, 786 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=372, Invalid=1608, Unknown=0, NotChecked=0, Total=1980 [2023-04-01 22:34:34,174 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 6239 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 17852 mSolverCounterSat, 1905 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6244 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 19757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1905 IncrementalHoareTripleChecker+Valid, 17852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:34:34,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6244 Valid, 477 Invalid, 19757 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1905 Valid, 17852 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2023-04-01 22:34:34,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99807 states. [2023-04-01 22:34:35,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99807 to 94268. [2023-04-01 22:34:35,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94268 states, 91848 states have (on average 1.0779766570856197) internal successors, (99010), 92510 states have internal predecessors, (99010), 474 states have call successors, (474), 474 states have call predecessors, (474), 1945 states have return successors, (11979), 1283 states have call predecessors, (11979), 473 states have call successors, (11979) [2023-04-01 22:34:35,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94268 states to 94268 states and 111463 transitions. [2023-04-01 22:34:35,836 INFO L78 Accepts]: Start accepts. Automaton has 94268 states and 111463 transitions. Word has length 376 [2023-04-01 22:34:35,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:34:35,837 INFO L495 AbstractCegarLoop]: Abstraction has 94268 states and 111463 transitions. [2023-04-01 22:34:35,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 48.36363636363637) internal successors, (532), 9 states have internal predecessors, (532), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 22:34:35,837 INFO L276 IsEmpty]: Start isEmpty. Operand 94268 states and 111463 transitions. [2023-04-01 22:34:35,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2023-04-01 22:34:35,848 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:34:35,848 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 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 22:34:35,854 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 22:34:36,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:34:36,054 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:34:36,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:34:36,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1903428017, now seen corresponding path program 1 times [2023-04-01 22:34:36,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:34:36,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032027588] [2023-04-01 22:34:36,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:34:36,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:34:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:36,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:34:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:36,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:34:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:36,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:34:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:36,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2023-04-01 22:34:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:36,894 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 90 proven. 3 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2023-04-01 22:34:36,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:34:36,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032027588] [2023-04-01 22:34:36,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032027588] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:34:36,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709047614] [2023-04-01 22:34:36,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:34:36,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:34:36,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:34:36,896 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 22:34:36,898 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 22:34:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:37,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:34:37,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:34:37,119 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2023-04-01 22:34:37,120 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:34:37,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709047614] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:34:37,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:34:37,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 22:34:37,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465678431] [2023-04-01 22:34:37,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:34:37,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:34:37,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:34:37,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:34:37,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:34:37,124 INFO L87 Difference]: Start difference. First operand 94268 states and 111463 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 22:34:40,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:34:40,766 INFO L93 Difference]: Finished difference Result 207740 states and 248144 transitions. [2023-04-01 22:34:40,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:34:40,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 427 [2023-04-01 22:34:40,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:34:41,228 INFO L225 Difference]: With dead ends: 207740 [2023-04-01 22:34:41,228 INFO L226 Difference]: Without dead ends: 113478 [2023-04-01 22:34:41,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 435 SyntacticMatches, 2 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 22:34:41,308 INFO L413 NwaCegarLoop]: 1158 mSDtfsCounter, 853 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2118 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 2690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 2118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:34:41,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 1190 Invalid, 2690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 2118 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-01 22:34:41,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113478 states. [2023-04-01 22:34:42,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113478 to 110408. [2023-04-01 22:34:42,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110408 states, 107807 states have (on average 1.068928733755693) internal successors, (115238), 108475 states have internal predecessors, (115238), 558 states have call successors, (558), 558 states have call predecessors, (558), 2042 states have return successors, (12690), 1374 states have call predecessors, (12690), 557 states have call successors, (12690) [2023-04-01 22:34:43,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110408 states to 110408 states and 128486 transitions. [2023-04-01 22:34:43,401 INFO L78 Accepts]: Start accepts. Automaton has 110408 states and 128486 transitions. Word has length 427 [2023-04-01 22:34:43,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:34:43,402 INFO L495 AbstractCegarLoop]: Abstraction has 110408 states and 128486 transitions. [2023-04-01 22:34:43,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 22:34:43,402 INFO L276 IsEmpty]: Start isEmpty. Operand 110408 states and 128486 transitions. [2023-04-01 22:34:43,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 952 [2023-04-01 22:34:43,532 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:34:43,532 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:34:43,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-04-01 22:34:43,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:34:43,733 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:34:43,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:34:43,734 INFO L85 PathProgramCache]: Analyzing trace with hash 911342050, now seen corresponding path program 1 times [2023-04-01 22:34:43,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:34:43,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390998280] [2023-04-01 22:34:43,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:34:43,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:34:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:45,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:34:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:45,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:34:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:45,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:34:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:45,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-04-01 22:34:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:46,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:34:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:47,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:34:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:47,392 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 306 proven. 6 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-04-01 22:34:47,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:34:47,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390998280] [2023-04-01 22:34:47,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390998280] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:34:47,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029754182] [2023-04-01 22:34:47,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:34:47,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:34:47,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:34:47,395 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 22:34:47,419 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 22:34:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:47,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 1287 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 22:34:47,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:34:48,276 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-04-01 22:34:48,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:34:48,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029754182] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:34:48,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:34:48,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-04-01 22:34:48,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177850433] [2023-04-01 22:34:48,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:34:48,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:34:48,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:34:48,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:34:48,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:34:48,279 INFO L87 Difference]: Start difference. First operand 110408 states and 128486 transitions. Second operand has 5 states, 5 states have (on average 167.8) internal successors, (839), 4 states have internal predecessors, (839), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:34:52,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:34:52,852 INFO L93 Difference]: Finished difference Result 227199 states and 264480 transitions. [2023-04-01 22:34:52,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 22:34:52,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 167.8) internal successors, (839), 4 states have internal predecessors, (839), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 951 [2023-04-01 22:34:52,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:34:53,305 INFO L225 Difference]: With dead ends: 227199 [2023-04-01 22:34:53,305 INFO L226 Difference]: Without dead ends: 116797 [2023-04-01 22:34:53,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 975 GetRequests, 961 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:34:53,383 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 2069 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4380 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2069 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 4852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 4380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:34:53,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2069 Valid, 154 Invalid, 4852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 4380 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-01 22:34:53,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116797 states. [2023-04-01 22:34:54,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116797 to 115924. [2023-04-01 22:34:55,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115924 states, 113207 states have (on average 1.0660206524331535) internal successors, (120681), 113908 states have internal predecessors, (120681), 586 states have call successors, (586), 586 states have call predecessors, (586), 2130 states have return successors, (13089), 1429 states have call predecessors, (13089), 585 states have call successors, (13089) [2023-04-01 22:34:55,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115924 states to 115924 states and 134356 transitions. [2023-04-01 22:34:55,235 INFO L78 Accepts]: Start accepts. Automaton has 115924 states and 134356 transitions. Word has length 951 [2023-04-01 22:34:55,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:34:55,236 INFO L495 AbstractCegarLoop]: Abstraction has 115924 states and 134356 transitions. [2023-04-01 22:34:55,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 167.8) internal successors, (839), 4 states have internal predecessors, (839), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:34:55,236 INFO L276 IsEmpty]: Start isEmpty. Operand 115924 states and 134356 transitions. [2023-04-01 22:34:55,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1042 [2023-04-01 22:34:55,565 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:34:55,566 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:34:55,574 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 22:34:55,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:34:55,767 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:34:55,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:34:55,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1964143071, now seen corresponding path program 1 times [2023-04-01 22:34:55,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:34:55,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627876402] [2023-04-01 22:34:55,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:34:55,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:34:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:56,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:34:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:56,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:34:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:56,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:34:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:56,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-04-01 22:34:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:56,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2023-04-01 22:34:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:56,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:34:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:57,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:34:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:57,076 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 269 proven. 72 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-04-01 22:34:57,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:34:57,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627876402] [2023-04-01 22:34:57,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627876402] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:34:57,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326687819] [2023-04-01 22:34:57,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:34:57,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:34:57,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:34:57,081 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 22:34:57,084 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 22:34:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:34:57,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 1421 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:34:57,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:34:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 544 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-04-01 22:34:57,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:34:57,800 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 271 proven. 73 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-04-01 22:34:57,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326687819] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:34:57,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:34:57,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:34:57,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508597121] [2023-04-01 22:34:57,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:34:57,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:34:57,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:34:57,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:34:57,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:34:57,806 INFO L87 Difference]: Start difference. First operand 115924 states and 134356 transitions. Second operand has 11 states, 11 states have (on average 145.36363636363637) internal successors, (1599), 9 states have internal predecessors, (1599), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-04-01 22:35:04,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:35:04,860 INFO L93 Difference]: Finished difference Result 231255 states and 268334 transitions. [2023-04-01 22:35:04,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 22:35:04,861 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 145.36363636363637) internal successors, (1599), 9 states have internal predecessors, (1599), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 1041 [2023-04-01 22:35:04,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:35:05,327 INFO L225 Difference]: With dead ends: 231255 [2023-04-01 22:35:05,327 INFO L226 Difference]: Without dead ends: 116104 [2023-04-01 22:35:05,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2126 GetRequests, 2102 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2023-04-01 22:35:05,421 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 7842 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 9190 mSolverCounterSat, 1197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7842 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 10387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1197 IncrementalHoareTripleChecker+Valid, 9190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:35:05,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7842 Valid, 266 Invalid, 10387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1197 Valid, 9190 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-04-01 22:35:05,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116104 states. [2023-04-01 22:35:06,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116104 to 116034. [2023-04-01 22:35:06,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116034 states, 113276 states have (on average 1.0506462092588016) internal successors, (119013), 113990 states have internal predecessors, (119013), 586 states have call successors, (586), 586 states have call predecessors, (586), 2171 states have return successors, (10293), 1457 states have call predecessors, (10293), 585 states have call successors, (10293) [2023-04-01 22:35:07,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116034 states to 116034 states and 129892 transitions. [2023-04-01 22:35:07,356 INFO L78 Accepts]: Start accepts. Automaton has 116034 states and 129892 transitions. Word has length 1041 [2023-04-01 22:35:07,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:35:07,357 INFO L495 AbstractCegarLoop]: Abstraction has 116034 states and 129892 transitions. [2023-04-01 22:35:07,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 145.36363636363637) internal successors, (1599), 9 states have internal predecessors, (1599), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-04-01 22:35:07,357 INFO L276 IsEmpty]: Start isEmpty. Operand 116034 states and 129892 transitions. [2023-04-01 22:35:07,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1062 [2023-04-01 22:35:07,443 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:35:07,443 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 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 22:35:07,456 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 22:35:07,650 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,SelfDestructingSolverStorable11 [2023-04-01 22:35:07,651 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:35:07,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:35:07,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1039370528, now seen corresponding path program 1 times [2023-04-01 22:35:07,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:35:07,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682369089] [2023-04-01 22:35:07,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:35:07,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:35:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:10,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:35:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:10,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:35:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:10,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:35:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:10,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 22:35:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:10,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2023-04-01 22:35:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:12,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:35:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:13,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:35:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:13,940 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 514 proven. 31 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2023-04-01 22:35:13,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:35:13,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682369089] [2023-04-01 22:35:13,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682369089] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:35:13,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776500563] [2023-04-01 22:35:13,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:35:13,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:35:13,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:35:13,942 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 22:35:13,945 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 22:35:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:14,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 1441 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 22:35:14,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:35:15,101 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 546 proven. 2 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-04-01 22:35:15,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:35:17,037 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 546 proven. 2 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-04-01 22:35:17,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776500563] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:35:17,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:35:17,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 6] total 19 [2023-04-01 22:35:17,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831745685] [2023-04-01 22:35:17,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:35:17,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-01 22:35:17,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:35:17,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-01 22:35:17,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2023-04-01 22:35:17,044 INFO L87 Difference]: Start difference. First operand 116034 states and 129892 transitions. Second operand has 19 states, 19 states have (on average 107.15789473684211) internal successors, (2036), 17 states have internal predecessors, (2036), 9 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2023-04-01 22:35:38,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:35:38,304 INFO L93 Difference]: Finished difference Result 268350 states and 303683 transitions. [2023-04-01 22:35:38,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-04-01 22:35:38,305 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 107.15789473684211) internal successors, (2036), 17 states have internal predecessors, (2036), 9 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) Word has length 1061 [2023-04-01 22:35:38,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:35:38,667 INFO L225 Difference]: With dead ends: 268350 [2023-04-01 22:35:38,668 INFO L226 Difference]: Without dead ends: 150744 [2023-04-01 22:35:38,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2271 GetRequests, 2169 SyntacticMatches, 4 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3356 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1514, Invalid=8386, Unknown=0, NotChecked=0, Total=9900 [2023-04-01 22:35:38,780 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 10425 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 27193 mSolverCounterSat, 4003 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10438 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 31196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4003 IncrementalHoareTripleChecker+Valid, 27193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:35:38,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10438 Valid, 689 Invalid, 31196 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4003 Valid, 27193 Invalid, 0 Unknown, 0 Unchecked, 17.2s Time] [2023-04-01 22:35:38,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150744 states. [2023-04-01 22:35:40,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150744 to 142138. [2023-04-01 22:35:40,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142138 states, 138806 states have (on average 1.0471017103007074) internal successors, (145344), 139657 states have internal predecessors, (145344), 718 states have call successors, (718), 718 states have call predecessors, (718), 2613 states have return successors, (12608), 1762 states have call predecessors, (12608), 717 states have call successors, (12608) [2023-04-01 22:35:41,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142138 states to 142138 states and 158670 transitions. [2023-04-01 22:35:41,397 INFO L78 Accepts]: Start accepts. Automaton has 142138 states and 158670 transitions. Word has length 1061 [2023-04-01 22:35:41,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:35:41,397 INFO L495 AbstractCegarLoop]: Abstraction has 142138 states and 158670 transitions. [2023-04-01 22:35:41,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.15789473684211) internal successors, (2036), 17 states have internal predecessors, (2036), 9 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2023-04-01 22:35:41,398 INFO L276 IsEmpty]: Start isEmpty. Operand 142138 states and 158670 transitions. [2023-04-01 22:35:41,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1074 [2023-04-01 22:35:41,488 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:35:41,488 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:35:41,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 22:35:41,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 22:35:41,691 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:35:41,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:35:41,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1403231329, now seen corresponding path program 1 times [2023-04-01 22:35:41,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:35:41,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282735287] [2023-04-01 22:35:41,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:35:41,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:35:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:44,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:35:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:44,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:35:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:44,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:35:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:44,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-04-01 22:35:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:44,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2023-04-01 22:35:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:45,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:35:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:45,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:35:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:45,989 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 363 proven. 357 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 22:35:45,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:35:45,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282735287] [2023-04-01 22:35:45,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282735287] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:35:45,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193614705] [2023-04-01 22:35:45,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:35:45,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:35:45,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:35:45,990 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 22:35:45,992 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 22:35:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:35:46,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-01 22:35:46,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:35:47,414 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 531 proven. 77 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-04-01 22:35:47,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:35:49,495 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 463 proven. 2 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-04-01 22:35:49,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193614705] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:35:49,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:35:49,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8, 5] total 25 [2023-04-01 22:35:49,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160509468] [2023-04-01 22:35:49,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:35:49,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-04-01 22:35:49,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:35:49,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-04-01 22:35:49,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2023-04-01 22:35:49,503 INFO L87 Difference]: Start difference. First operand 142138 states and 158670 transitions. Second operand has 25 states, 25 states have (on average 101.52) internal successors, (2538), 23 states have internal predecessors, (2538), 12 states have call successors, (19), 8 states have call predecessors, (19), 10 states have return successors, (17), 12 states have call predecessors, (17), 10 states have call successors, (17)