/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/Problem17_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 23:28:10,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 23:28:10,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 23:28:10,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 23:28:10,550 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 23:28:10,578 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 23:28:10,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 23:28:10,579 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 23:28:10,579 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 23:28:10,580 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 23:28:10,580 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 23:28:10,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 23:28:10,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 23:28:10,581 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 23:28:10,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 23:28:10,582 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 23:28:10,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 23:28:10,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 23:28:10,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 23:28:10,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 23:28:10,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 23:28:10,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 23:28:10,583 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 23:28:10,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 23:28:10,584 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 23:28:10,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 23:28:10,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 23:28:10,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 23:28:10,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 23:28:10,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:28:10,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 23:28:10,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 23:28:10,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 23:28:10,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 23:28:10,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 23:28:10,586 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 23:28:10,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 23:28:10,586 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 23:28:10,586 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 23:28:10,587 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 23:28:10,587 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 23:28:10,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 23:28:10,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 23:28:10,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 23:28:10,854 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 23:28:10,854 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 23:28:10,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label35.c [2023-04-01 23:28:12,073 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 23:28:12,429 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 23:28:12,430 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label35.c [2023-04-01 23:28:12,451 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/169347d3f/f8c49db4e1dd4b258d972059aa71e410/FLAG1513e6b63 [2023-04-01 23:28:12,465 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/169347d3f/f8c49db4e1dd4b258d972059aa71e410 [2023-04-01 23:28:12,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 23:28:12,469 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 23:28:12,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 23:28:12,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 23:28:12,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 23:28:12,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:28:12" (1/1) ... [2023-04-01 23:28:12,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c870ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:28:12, skipping insertion in model container [2023-04-01 23:28:12,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:28:12" (1/1) ... [2023-04-01 23:28:12,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 23:28:12,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 23:28:12,756 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/Problem17_label35.c[1267,1280] [2023-04-01 23:28:13,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:28:13,357 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 23:28:13,370 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/Problem17_label35.c[1267,1280] [2023-04-01 23:28:13,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:28:13,633 INFO L208 MainTranslator]: Completed translation [2023-04-01 23:28:13,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:28:13 WrapperNode [2023-04-01 23:28:13,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 23:28:13,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 23:28:13,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 23:28:13,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 23:28:13,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:28:13" (1/1) ... [2023-04-01 23:28:13,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:28:13" (1/1) ... [2023-04-01 23:28:13,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:28:13" (1/1) ... [2023-04-01 23:28:13,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:28:13" (1/1) ... [2023-04-01 23:28:13,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:28:13" (1/1) ... [2023-04-01 23:28:13,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:28:13" (1/1) ... [2023-04-01 23:28:13,798 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:28:13" (1/1) ... [2023-04-01 23:28:13,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:28:13" (1/1) ... [2023-04-01 23:28:13,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 23:28:13,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 23:28:13,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 23:28:13,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 23:28:13,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:28:13" (1/1) ... [2023-04-01 23:28:13,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:28:13,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:28:13,870 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 23:28:13,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 23:28:13,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 23:28:13,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 23:28:13,908 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 23:28:13,908 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 23:28:13,908 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 23:28:13,908 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 23:28:13,908 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 23:28:13,908 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 23:28:13,909 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 23:28:13,909 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 23:28:13,909 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 23:28:13,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 23:28:13,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 23:28:13,909 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 23:28:13,909 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 23:28:13,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 23:28:13,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 23:28:13,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 23:28:13,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 23:28:13,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 23:28:13,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 23:28:13,990 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 23:28:13,992 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 23:28:17,209 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 23:28:17,225 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 23:28:17,225 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 23:28:17,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:28:17 BoogieIcfgContainer [2023-04-01 23:28:17,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 23:28:17,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 23:28:17,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 23:28:17,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 23:28:17,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:28:12" (1/3) ... [2023-04-01 23:28:17,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e39b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:28:17, skipping insertion in model container [2023-04-01 23:28:17,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:28:13" (2/3) ... [2023-04-01 23:28:17,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e39b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:28:17, skipping insertion in model container [2023-04-01 23:28:17,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:28:17" (3/3) ... [2023-04-01 23:28:17,237 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label35.c [2023-04-01 23:28:17,253 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 23:28:17,253 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 23:28:17,323 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 23:28:17,330 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;@25e68dfb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 23:28:17,330 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 23:28:17,338 INFO L276 IsEmpty]: Start isEmpty. Operand has 603 states, 593 states have (on average 1.7993254637436762) internal successors, (1067), 594 states have internal predecessors, (1067), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 23:28:17,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-04-01 23:28:17,344 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:28:17,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:28:17,346 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:28:17,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:28:17,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1553323350, now seen corresponding path program 1 times [2023-04-01 23:28:17,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:28:17,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428199418] [2023-04-01 23:28:17,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:28:17,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:28:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:17,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:28:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:17,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:28:17,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:28:17,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428199418] [2023-04-01 23:28:17,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428199418] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:28:17,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:28:17,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 23:28:17,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46195672] [2023-04-01 23:28:17,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:28:17,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 23:28:17,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:28:17,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 23:28:17,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 23:28:17,783 INFO L87 Difference]: Start difference. First operand has 603 states, 593 states have (on average 1.7993254637436762) internal successors, (1067), 594 states have internal predecessors, (1067), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:28:21,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:28:21,787 INFO L93 Difference]: Finished difference Result 1729 states and 3137 transitions. [2023-04-01 23:28:21,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 23:28:21,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 13 [2023-04-01 23:28:21,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:28:21,822 INFO L225 Difference]: With dead ends: 1729 [2023-04-01 23:28:21,822 INFO L226 Difference]: Without dead ends: 1047 [2023-04-01 23:28:21,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:28:21,834 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 1641 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 2223 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1641 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 2590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 2223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:28:21,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1641 Valid, 137 Invalid, 2590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 2223 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-04-01 23:28:21,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2023-04-01 23:28:21,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1028. [2023-04-01 23:28:21,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1012 states have (on average 1.7233201581027668) internal successors, (1744), 1014 states have internal predecessors, (1744), 6 states have call successors, (6), 6 states have call predecessors, (6), 9 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2023-04-01 23:28:21,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1763 transitions. [2023-04-01 23:28:21,948 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1763 transitions. Word has length 13 [2023-04-01 23:28:21,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:28:21,949 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1763 transitions. [2023-04-01 23:28:21,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:28:21,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1763 transitions. [2023-04-01 23:28:21,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-01 23:28:21,953 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:28:21,953 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 23:28:21,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 23:28:21,954 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:28:21,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:28:21,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1152251691, now seen corresponding path program 1 times [2023-04-01 23:28:21,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:28:21,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921678312] [2023-04-01 23:28:21,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:28:21,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:28:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:22,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:28:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:22,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:28:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:22,466 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:28:22,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:28:22,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921678312] [2023-04-01 23:28:22,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921678312] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:28:22,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:28:22,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:28:22,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074757153] [2023-04-01 23:28:22,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:28:22,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:28:22,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:28:22,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:28:22,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:28:22,472 INFO L87 Difference]: Start difference. First operand 1028 states and 1763 transitions. Second operand has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:28:26,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:28:26,408 INFO L93 Difference]: Finished difference Result 3033 states and 5275 transitions. [2023-04-01 23:28:26,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:28:26,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 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 82 [2023-04-01 23:28:26,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:28:26,424 INFO L225 Difference]: With dead ends: 3033 [2023-04-01 23:28:26,424 INFO L226 Difference]: Without dead ends: 2011 [2023-04-01 23:28:26,432 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 23:28:26,434 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 3330 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 3028 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3330 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 3437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 3028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:28:26,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3330 Valid, 322 Invalid, 3437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 3028 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-04-01 23:28:26,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2023-04-01 23:28:26,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 1961. [2023-04-01 23:28:26,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1961 states, 1921 states have (on average 1.5033836543466945) internal successors, (2888), 1931 states have internal predecessors, (2888), 10 states have call successors, (10), 10 states have call predecessors, (10), 29 states have return successors, (64), 19 states have call predecessors, (64), 9 states have call successors, (64) [2023-04-01 23:28:26,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2962 transitions. [2023-04-01 23:28:26,518 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2962 transitions. Word has length 82 [2023-04-01 23:28:26,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:28:26,519 INFO L495 AbstractCegarLoop]: Abstraction has 1961 states and 2962 transitions. [2023-04-01 23:28:26,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:28:26,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2962 transitions. [2023-04-01 23:28:26,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-01 23:28:26,522 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:28:26,523 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 23:28:26,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 23:28:26,523 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:28:26,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:28:26,524 INFO L85 PathProgramCache]: Analyzing trace with hash -2095253649, now seen corresponding path program 1 times [2023-04-01 23:28:26,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:28:26,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239264784] [2023-04-01 23:28:26,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:28:26,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:28:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:26,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:28:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:26,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:28:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:26,819 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:28:26,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:28:26,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239264784] [2023-04-01 23:28:26,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239264784] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:28:26,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:28:26,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:28:26,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631107120] [2023-04-01 23:28:26,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:28:26,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:28:26,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:28:26,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:28:26,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:28:26,822 INFO L87 Difference]: Start difference. First operand 1961 states and 2962 transitions. Second operand has 7 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:28:30,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:28:30,283 INFO L93 Difference]: Finished difference Result 5847 states and 8972 transitions. [2023-04-01 23:28:30,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:28:30,283 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 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 84 [2023-04-01 23:28:30,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:28:30,299 INFO L225 Difference]: With dead ends: 5847 [2023-04-01 23:28:30,299 INFO L226 Difference]: Without dead ends: 3892 [2023-04-01 23:28:30,303 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 23:28:30,304 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 3299 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 2700 mSolverCounterSat, 777 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3299 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 3477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 777 IncrementalHoareTripleChecker+Valid, 2700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:28:30,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3299 Valid, 292 Invalid, 3477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [777 Valid, 2700 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-01 23:28:30,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3892 states. [2023-04-01 23:28:30,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3892 to 2890. [2023-04-01 23:28:30,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2890 states, 2818 states have (on average 1.3474095102909864) internal successors, (3797), 2844 states have internal predecessors, (3797), 14 states have call successors, (14), 14 states have call predecessors, (14), 57 states have return successors, (143), 31 states have call predecessors, (143), 13 states have call successors, (143) [2023-04-01 23:28:30,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2890 states to 2890 states and 3954 transitions. [2023-04-01 23:28:30,381 INFO L78 Accepts]: Start accepts. Automaton has 2890 states and 3954 transitions. Word has length 84 [2023-04-01 23:28:30,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:28:30,382 INFO L495 AbstractCegarLoop]: Abstraction has 2890 states and 3954 transitions. [2023-04-01 23:28:30,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:28:30,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2890 states and 3954 transitions. [2023-04-01 23:28:30,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-01 23:28:30,383 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:28:30,383 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 23:28:30,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 23:28:30,384 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:28:30,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:28:30,384 INFO L85 PathProgramCache]: Analyzing trace with hash -2101979811, now seen corresponding path program 1 times [2023-04-01 23:28:30,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:28:30,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356166458] [2023-04-01 23:28:30,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:28:30,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:28:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:30,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:28:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:30,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:28:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:30,627 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:28:30,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:28:30,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356166458] [2023-04-01 23:28:30,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356166458] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:28:30,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065308508] [2023-04-01 23:28:30,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:28:30,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:28:30,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:28:30,633 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:28:30,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 23:28:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:30,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 9 conjunts are in the unsatisfiable core [2023-04-01 23:28:30,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:28:31,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:28:31,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:28:31,166 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:28:31,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065308508] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 23:28:31,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 23:28:31,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 6] total 9 [2023-04-01 23:28:31,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038429251] [2023-04-01 23:28:31,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:28:31,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:28:31,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:28:31,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:28:31,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-04-01 23:28:31,168 INFO L87 Difference]: Start difference. First operand 2890 states and 3954 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 23:28:33,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:28:33,396 INFO L93 Difference]: Finished difference Result 7571 states and 10593 transitions. [2023-04-01 23:28:33,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:28:33,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 87 [2023-04-01 23:28:33,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:28:33,411 INFO L225 Difference]: With dead ends: 7571 [2023-04-01 23:28:33,412 INFO L226 Difference]: Without dead ends: 3793 [2023-04-01 23:28:33,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-04-01 23:28:33,420 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 504 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 1676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:28:33,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 905 Invalid, 1676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 1256 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-01 23:28:33,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3793 states. [2023-04-01 23:28:33,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3793 to 3781. [2023-04-01 23:28:33,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3781 states, 3692 states have (on average 1.2472914409534128) internal successors, (4605), 3723 states have internal predecessors, (4605), 18 states have call successors, (18), 18 states have call predecessors, (18), 70 states have return successors, (239), 39 states have call predecessors, (239), 17 states have call successors, (239) [2023-04-01 23:28:33,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3781 states to 3781 states and 4862 transitions. [2023-04-01 23:28:33,502 INFO L78 Accepts]: Start accepts. Automaton has 3781 states and 4862 transitions. Word has length 87 [2023-04-01 23:28:33,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:28:33,502 INFO L495 AbstractCegarLoop]: Abstraction has 3781 states and 4862 transitions. [2023-04-01 23:28:33,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 23:28:33,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3781 states and 4862 transitions. [2023-04-01 23:28:33,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-04-01 23:28:33,504 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:28:33,505 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:28:33,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 23:28:33,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:28:33,716 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:28:33,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:28:33,717 INFO L85 PathProgramCache]: Analyzing trace with hash -915071250, now seen corresponding path program 1 times [2023-04-01 23:28:33,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:28:33,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650221290] [2023-04-01 23:28:33,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:28:33,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:28:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:33,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:28:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:33,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:28:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:33,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:28:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:34,068 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 23:28:34,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:28:34,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650221290] [2023-04-01 23:28:34,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650221290] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:28:34,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57436057] [2023-04-01 23:28:34,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:28:34,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:28:34,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:28:34,070 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:28:34,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 23:28:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:34,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:28:34,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:28:34,319 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:28:34,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:28:34,569 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:28:34,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57436057] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:28:34,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:28:34,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:28:34,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414685048] [2023-04-01 23:28:34,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:28:34,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:28:34,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:28:34,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:28:34,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:28:34,573 INFO L87 Difference]: Start difference. First operand 3781 states and 4862 transitions. Second operand has 11 states, 11 states have (on average 27.90909090909091) internal successors, (307), 9 states have internal predecessors, (307), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:28:38,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:28:38,715 INFO L93 Difference]: Finished difference Result 10307 states and 13865 transitions. [2023-04-01 23:28:38,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 23:28:38,716 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 27.90909090909091) internal successors, (307), 9 states have internal predecessors, (307), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 173 [2023-04-01 23:28:38,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:28:38,743 INFO L225 Difference]: With dead ends: 10307 [2023-04-01 23:28:38,743 INFO L226 Difference]: Without dead ends: 6532 [2023-04-01 23:28:38,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 348 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 23:28:38,752 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 2678 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 4267 mSolverCounterSat, 931 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2678 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 5198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 931 IncrementalHoareTripleChecker+Valid, 4267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:28:38,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2678 Valid, 368 Invalid, 5198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [931 Valid, 4267 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-04-01 23:28:38,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6532 states. [2023-04-01 23:28:38,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6532 to 6513. [2023-04-01 23:28:38,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6513 states, 6344 states have (on average 1.2094892812105926) internal successors, (7673), 6406 states have internal predecessors, (7673), 30 states have call successors, (30), 30 states have call predecessors, (30), 138 states have return successors, (645), 76 states have call predecessors, (645), 29 states have call successors, (645) [2023-04-01 23:28:38,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6513 states to 6513 states and 8348 transitions. [2023-04-01 23:28:38,909 INFO L78 Accepts]: Start accepts. Automaton has 6513 states and 8348 transitions. Word has length 173 [2023-04-01 23:28:38,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:28:38,910 INFO L495 AbstractCegarLoop]: Abstraction has 6513 states and 8348 transitions. [2023-04-01 23:28:38,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 27.90909090909091) internal successors, (307), 9 states have internal predecessors, (307), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:28:38,910 INFO L276 IsEmpty]: Start isEmpty. Operand 6513 states and 8348 transitions. [2023-04-01 23:28:38,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-04-01 23:28:38,913 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:28:38,914 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-01 23:28:38,925 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 23:28:39,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:28:39,122 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:28:39,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:28:39,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1386855127, now seen corresponding path program 1 times [2023-04-01 23:28:39,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:28:39,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072700319] [2023-04-01 23:28:39,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:28:39,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:28:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:39,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:28:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:39,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:28:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:39,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:28:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:39,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-04-01 23:28:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:39,594 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-04-01 23:28:39,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:28:39,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072700319] [2023-04-01 23:28:39,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072700319] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:28:39,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557381541] [2023-04-01 23:28:39,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:28:39,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:28:39,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:28:39,597 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:28:39,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 23:28:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:39,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:28:39,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:28:39,759 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-04-01 23:28:39,759 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:28:39,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557381541] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:28:39,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:28:39,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 23:28:39,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356159330] [2023-04-01 23:28:39,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:28:39,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:28:39,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:28:39,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:28:39,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:28:39,763 INFO L87 Difference]: Start difference. First operand 6513 states and 8348 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:28:41,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:28:41,545 INFO L93 Difference]: Finished difference Result 18751 states and 24563 transitions. [2023-04-01 23:28:41,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:28:41,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 254 [2023-04-01 23:28:41,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:28:41,588 INFO L225 Difference]: With dead ends: 18751 [2023-04-01 23:28:41,588 INFO L226 Difference]: Without dead ends: 11345 [2023-04-01 23:28:41,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:28:41,652 INFO L413 NwaCegarLoop]: 820 mSDtfsCounter, 443 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:28:41,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 901 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-01 23:28:41,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11345 states. [2023-04-01 23:28:41,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11345 to 11345. [2023-04-01 23:28:41,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11345 states, 11102 states have (on average 1.1386236714105566) internal successors, (12641), 11185 states have internal predecessors, (12641), 52 states have call successors, (52), 52 states have call predecessors, (52), 190 states have return successors, (1086), 107 states have call predecessors, (1086), 51 states have call successors, (1086) [2023-04-01 23:28:41,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11345 states to 11345 states and 13779 transitions. [2023-04-01 23:28:41,896 INFO L78 Accepts]: Start accepts. Automaton has 11345 states and 13779 transitions. Word has length 254 [2023-04-01 23:28:41,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:28:41,898 INFO L495 AbstractCegarLoop]: Abstraction has 11345 states and 13779 transitions. [2023-04-01 23:28:41,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:28:41,899 INFO L276 IsEmpty]: Start isEmpty. Operand 11345 states and 13779 transitions. [2023-04-01 23:28:41,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-04-01 23:28:41,903 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:28:41,903 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:28:41,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 23:28:42,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:28:42,110 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:28:42,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:28:42,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1272388968, now seen corresponding path program 1 times [2023-04-01 23:28:42,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:28:42,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627545148] [2023-04-01 23:28:42,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:28:42,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:28:42,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:42,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:28:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:42,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:28:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:42,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:28:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:42,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-04-01 23:28:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:42,448 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-04-01 23:28:42,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:28:42,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627545148] [2023-04-01 23:28:42,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627545148] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:28:42,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987652554] [2023-04-01 23:28:42,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:28:42,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:28:42,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:28:42,450 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:28:42,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 23:28:42,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:42,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:28:42,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:28:42,655 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-04-01 23:28:42,655 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:28:42,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987652554] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:28:42,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:28:42,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 23:28:42,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854606941] [2023-04-01 23:28:42,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:28:42,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:28:42,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:28:42,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:28:42,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:28:42,657 INFO L87 Difference]: Start difference. First operand 11345 states and 13779 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:28:44,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:28:44,312 INFO L93 Difference]: Finished difference Result 28419 states and 35404 transitions. [2023-04-01 23:28:44,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:28:44,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 271 [2023-04-01 23:28:44,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:28:44,370 INFO L225 Difference]: With dead ends: 28419 [2023-04-01 23:28:44,371 INFO L226 Difference]: Without dead ends: 17080 [2023-04-01 23:28:44,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 278 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 23:28:44,398 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 494 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:28:44,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 402 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-01 23:28:44,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17080 states. [2023-04-01 23:28:44,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17080 to 16199. [2023-04-01 23:28:44,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16199 states, 15872 states have (on average 1.1358996975806452) internal successors, (18029), 15980 states have internal predecessors, (18029), 74 states have call successors, (74), 74 states have call predecessors, (74), 252 states have return successors, (1847), 144 states have call predecessors, (1847), 73 states have call successors, (1847) [2023-04-01 23:28:44,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16199 states to 16199 states and 19950 transitions. [2023-04-01 23:28:44,847 INFO L78 Accepts]: Start accepts. Automaton has 16199 states and 19950 transitions. Word has length 271 [2023-04-01 23:28:44,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:28:44,848 INFO L495 AbstractCegarLoop]: Abstraction has 16199 states and 19950 transitions. [2023-04-01 23:28:44,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:28:44,848 INFO L276 IsEmpty]: Start isEmpty. Operand 16199 states and 19950 transitions. [2023-04-01 23:28:44,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-04-01 23:28:44,855 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:28:44,856 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 23:28:44,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 23:28:45,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:28:45,062 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:28:45,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:28:45,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1875016110, now seen corresponding path program 1 times [2023-04-01 23:28:45,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:28:45,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923365922] [2023-04-01 23:28:45,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:28:45,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:28:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:45,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:28:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:45,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:28:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:46,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:28:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:46,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:28:46,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:28:46,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923365922] [2023-04-01 23:28:46,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923365922] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:28:46,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755823600] [2023-04-01 23:28:46,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:28:46,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:28:46,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:28:46,749 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:28:46,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 23:28:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:46,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 23:28:46,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:28:47,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:28:47,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:28:48,505 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:28:48,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755823600] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 23:28:48,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 23:28:48,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 16 [2023-04-01 23:28:48,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284029593] [2023-04-01 23:28:48,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:28:48,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 23:28:48,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:28:48,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 23:28:48,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:28:48,508 INFO L87 Difference]: Start difference. First operand 16199 states and 19950 transitions. Second operand has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 5 states have internal predecessors, (352), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 23:28:51,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:28:51,686 INFO L93 Difference]: Finished difference Result 45271 states and 58117 transitions. [2023-04-01 23:28:51,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 23:28:51,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 5 states have internal predecessors, (352), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 360 [2023-04-01 23:28:51,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:28:51,785 INFO L225 Difference]: With dead ends: 45271 [2023-04-01 23:28:51,785 INFO L226 Difference]: Without dead ends: 28157 [2023-04-01 23:28:51,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 717 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:28:51,832 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 1239 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 3053 mSolverCounterSat, 834 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 3887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 834 IncrementalHoareTripleChecker+Valid, 3053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:28:51,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 275 Invalid, 3887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [834 Valid, 3053 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-01 23:28:51,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28157 states. [2023-04-01 23:28:52,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28157 to 28137. [2023-04-01 23:28:52,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28137 states, 27608 states have (on average 1.134453781512605) internal successors, (31320), 27778 states have internal predecessors, (31320), 128 states have call successors, (128), 128 states have call predecessors, (128), 400 states have return successors, (3758), 230 states have call predecessors, (3758), 127 states have call successors, (3758) [2023-04-01 23:28:52,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28137 states to 28137 states and 35206 transitions. [2023-04-01 23:28:52,450 INFO L78 Accepts]: Start accepts. Automaton has 28137 states and 35206 transitions. Word has length 360 [2023-04-01 23:28:52,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:28:52,451 INFO L495 AbstractCegarLoop]: Abstraction has 28137 states and 35206 transitions. [2023-04-01 23:28:52,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 5 states have internal predecessors, (352), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 23:28:52,451 INFO L276 IsEmpty]: Start isEmpty. Operand 28137 states and 35206 transitions. [2023-04-01 23:28:52,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-04-01 23:28:52,465 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:28:52,465 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:28:52,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 23:28:52,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:28:52,676 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:28:52,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:28:52,677 INFO L85 PathProgramCache]: Analyzing trace with hash -308713860, now seen corresponding path program 1 times [2023-04-01 23:28:52,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:28:52,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535824671] [2023-04-01 23:28:52,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:28:52,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:28:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:53,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:28:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:53,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:28:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:53,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:28:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:53,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-04-01 23:28:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:53,851 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 26 proven. 162 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-04-01 23:28:53,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:28:53,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535824671] [2023-04-01 23:28:53,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535824671] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:28:53,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815733181] [2023-04-01 23:28:53,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:28:53,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:28:53,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:28:53,853 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:28:53,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 23:28:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:28:54,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 23:28:54,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:28:54,290 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-04-01 23:28:54,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:28:54,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815733181] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:28:54,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 23:28:54,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 11 [2023-04-01 23:28:54,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689971471] [2023-04-01 23:28:54,591 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 23:28:54,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:28:54,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:28:54,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:28:54,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:28:54,594 INFO L87 Difference]: Start difference. First operand 28137 states and 35206 transitions. Second operand has 11 states, 11 states have (on average 62.63636363636363) internal successors, (689), 9 states have internal predecessors, (689), 4 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-01 23:29:00,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:29:00,153 INFO L93 Difference]: Finished difference Result 84755 states and 108101 transitions. [2023-04-01 23:29:00,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-01 23:29:00,154 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 62.63636363636363) internal successors, (689), 9 states have internal predecessors, (689), 4 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 442 [2023-04-01 23:29:00,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:29:00,339 INFO L225 Difference]: With dead ends: 84755 [2023-04-01 23:29:00,340 INFO L226 Difference]: Without dead ends: 54846 [2023-04-01 23:29:00,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 835 GetRequests, 806 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=211, Invalid=601, Unknown=0, NotChecked=0, Total=812 [2023-04-01 23:29:00,371 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 4098 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 5269 mSolverCounterSat, 1049 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4105 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 6318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1049 IncrementalHoareTripleChecker+Valid, 5269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:29:00,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4105 Valid, 423 Invalid, 6318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1049 Valid, 5269 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-04-01 23:29:00,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54846 states. [2023-04-01 23:29:01,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54846 to 44731. [2023-04-01 23:29:01,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44731 states, 43833 states have (on average 1.1277119978098693) internal successors, (49431), 44164 states have internal predecessors, (49431), 202 states have call successors, (202), 202 states have call predecessors, (202), 695 states have return successors, (7147), 364 states have call predecessors, (7147), 201 states have call successors, (7147) [2023-04-01 23:29:01,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44731 states to 44731 states and 56780 transitions. [2023-04-01 23:29:01,468 INFO L78 Accepts]: Start accepts. Automaton has 44731 states and 56780 transitions. Word has length 442 [2023-04-01 23:29:01,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:29:01,469 INFO L495 AbstractCegarLoop]: Abstraction has 44731 states and 56780 transitions. [2023-04-01 23:29:01,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 62.63636363636363) internal successors, (689), 9 states have internal predecessors, (689), 4 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-01 23:29:01,469 INFO L276 IsEmpty]: Start isEmpty. Operand 44731 states and 56780 transitions. [2023-04-01 23:29:01,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2023-04-01 23:29:01,490 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:29:01,490 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-01 23:29:01,496 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 23:29:01,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:29:01,697 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:29:01,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:29:01,697 INFO L85 PathProgramCache]: Analyzing trace with hash 172458913, now seen corresponding path program 1 times [2023-04-01 23:29:01,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:29:01,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315677098] [2023-04-01 23:29:01,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:29:01,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:29:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:02,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:29:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:02,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:29:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:02,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:29:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:02,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-04-01 23:29:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:03,127 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 190 proven. 6 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-04-01 23:29:03,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:29:03,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315677098] [2023-04-01 23:29:03,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315677098] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:29:03,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760074237] [2023-04-01 23:29:03,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:29:03,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:29:03,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:29:03,130 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:29:03,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 23:29:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:29:03,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-01 23:29:03,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:29:03,940 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 23:29:03,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:29:05,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760074237] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:29:05,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 23:29:05,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2023-04-01 23:29:05,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780629449] [2023-04-01 23:29:05,627 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 23:29:05,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 23:29:05,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:29:05,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 23:29:05,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-04-01 23:29:05,630 INFO L87 Difference]: Start difference. First operand 44731 states and 56780 transitions. Second operand has 15 states, 15 states have (on average 53.46666666666667) internal successors, (802), 13 states have internal predecessors, (802), 6 states have call successors, (10), 7 states have call predecessors, (10), 8 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-04-01 23:29:10,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:29:14,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:29:17,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:29:19,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:29:23,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:29:25,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:29:28,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:29:31,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:29:34,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:29:36,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:29:38,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:29:43,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:29:46,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:29:49,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:29:51,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:29:54,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:29:57,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:29:59,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:03,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:05,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:07,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:10,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:12,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:14,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:18,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:21,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:23,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:25,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:27,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:29,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:32,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:34,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:37,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:40,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:45,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:30:45,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:30:45,404 INFO L93 Difference]: Finished difference Result 153801 states and 198438 transitions. [2023-04-01 23:30:45,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2023-04-01 23:30:45,406 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 53.46666666666667) internal successors, (802), 13 states have internal predecessors, (802), 6 states have call successors, (10), 7 states have call predecessors, (10), 8 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 468 [2023-04-01 23:30:45,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:30:45,908 INFO L225 Difference]: With dead ends: 153801 [2023-04-01 23:30:45,908 INFO L226 Difference]: Without dead ends: 107313 [2023-04-01 23:30:45,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 987 GetRequests, 862 SyntacticMatches, 1 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5926 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=2217, Invalid=13532, Unknown=1, NotChecked=0, Total=15750 [2023-04-01 23:30:45,964 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 7092 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 17211 mSolverCounterSat, 2479 mSolverCounterUnsat, 31 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7092 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 19721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2479 IncrementalHoareTripleChecker+Valid, 17211 IncrementalHoareTripleChecker+Invalid, 31 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 91.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:30:45,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7092 Valid, 1209 Invalid, 19721 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2479 Valid, 17211 Invalid, 31 Unknown, 0 Unchecked, 91.5s Time] [2023-04-01 23:30:46,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107313 states. [2023-04-01 23:30:48,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107313 to 91621. [2023-04-01 23:30:48,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91621 states, 89959 states have (on average 1.123578519103147) internal successors, (101076), 90541 states have internal predecessors, (101076), 414 states have call successors, (414), 414 states have call predecessors, (414), 1247 states have return successors, (14823), 665 states have call predecessors, (14823), 413 states have call successors, (14823) [2023-04-01 23:30:48,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91621 states to 91621 states and 116313 transitions. [2023-04-01 23:30:48,712 INFO L78 Accepts]: Start accepts. Automaton has 91621 states and 116313 transitions. Word has length 468 [2023-04-01 23:30:48,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:30:48,713 INFO L495 AbstractCegarLoop]: Abstraction has 91621 states and 116313 transitions. [2023-04-01 23:30:48,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 53.46666666666667) internal successors, (802), 13 states have internal predecessors, (802), 6 states have call successors, (10), 7 states have call predecessors, (10), 8 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-04-01 23:30:48,713 INFO L276 IsEmpty]: Start isEmpty. Operand 91621 states and 116313 transitions. [2023-04-01 23:30:48,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2023-04-01 23:30:48,753 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:30:48,753 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:30:48,762 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 23:30:48,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:30:48,960 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:30:48,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:30:48,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1081439452, now seen corresponding path program 1 times [2023-04-01 23:30:49,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:30:49,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649701646] [2023-04-01 23:30:49,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:30:49,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:30:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:30:49,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:30:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:30:49,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:30:49,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:30:49,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:30:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:30:49,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-04-01 23:30:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:30:49,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-04-01 23:30:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:30:50,087 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 204 proven. 101 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-04-01 23:30:50,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:30:50,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649701646] [2023-04-01 23:30:50,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649701646] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:30:50,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042779206] [2023-04-01 23:30:50,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:30:50,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:30:50,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:30:50,089 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:30:50,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 23:30:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:30:50,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:30:50,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:30:50,897 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 303 proven. 2 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-04-01 23:30:50,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:30:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 303 proven. 2 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-04-01 23:30:52,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042779206] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:30:52,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:30:52,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2023-04-01 23:30:52,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697729799] [2023-04-01 23:30:52,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:30:52,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 23:30:52,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:30:52,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 23:30:52,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:30:52,977 INFO L87 Difference]: Start difference. First operand 91621 states and 116313 transitions. Second operand has 13 states, 13 states have (on average 68.53846153846153) internal successors, (891), 11 states have internal predecessors, (891), 5 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 23:30:59,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:31:01,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:31:08,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:31:11,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:31:16,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:31:19,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:31:22,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:31:25,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:31:30,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:31:33,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:31:37,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:31:40,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:31:42,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:31:43,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:31:43,794 INFO L93 Difference]: Finished difference Result 246862 states and 317738 transitions. [2023-04-01 23:31:43,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-04-01 23:31:43,795 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 68.53846153846153) internal successors, (891), 11 states have internal predecessors, (891), 5 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 547 [2023-04-01 23:31:43,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:31:44,369 INFO L225 Difference]: With dead ends: 246862 [2023-04-01 23:31:44,369 INFO L226 Difference]: Without dead ends: 148142 [2023-04-01 23:31:44,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1192 GetRequests, 1137 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=483, Invalid=2709, Unknown=0, NotChecked=0, Total=3192 [2023-04-01 23:31:44,445 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 4618 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 14073 mSolverCounterSat, 1326 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4620 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 15413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1326 IncrementalHoareTripleChecker+Valid, 14073 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:31:44,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4620 Valid, 800 Invalid, 15413 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1326 Valid, 14073 Invalid, 14 Unknown, 0 Unchecked, 48.0s Time] [2023-04-01 23:31:44,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148142 states. [2023-04-01 23:31:46,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148142 to 131621. [2023-04-01 23:31:46,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131621 states, 129528 states have (on average 1.1091038231116053) internal successors, (143660), 130163 states have internal predecessors, (143660), 598 states have call successors, (598), 598 states have call predecessors, (598), 1494 states have return successors, (19835), 859 states have call predecessors, (19835), 597 states have call successors, (19835) [2023-04-01 23:31:47,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131621 states to 131621 states and 164093 transitions. [2023-04-01 23:31:47,540 INFO L78 Accepts]: Start accepts. Automaton has 131621 states and 164093 transitions. Word has length 547 [2023-04-01 23:31:47,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:31:47,540 INFO L495 AbstractCegarLoop]: Abstraction has 131621 states and 164093 transitions. [2023-04-01 23:31:47,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 68.53846153846153) internal successors, (891), 11 states have internal predecessors, (891), 5 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 23:31:47,541 INFO L276 IsEmpty]: Start isEmpty. Operand 131621 states and 164093 transitions. [2023-04-01 23:31:47,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2023-04-01 23:31:47,594 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:31:47,595 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:31:47,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-04-01 23:31:47,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-04-01 23:31:47,802 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:31:47,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:31:47,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1170573239, now seen corresponding path program 1 times [2023-04-01 23:31:47,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:31:47,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987083046] [2023-04-01 23:31:47,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:31:47,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:31:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:48,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:31:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:48,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:31:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:48,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:31:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:48,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2023-04-01 23:31:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:48,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2023-04-01 23:31:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:48,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:31:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:48,849 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2023-04-01 23:31:48,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:31:48,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987083046] [2023-04-01 23:31:48,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987083046] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:31:48,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352606826] [2023-04-01 23:31:48,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:31:48,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:31:48,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:31:48,852 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:31:48,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 23:31:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:49,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:31:49,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:31:49,141 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2023-04-01 23:31:49,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:31:49,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352606826] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:31:49,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:31:49,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:31:49,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721650709] [2023-04-01 23:31:49,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:31:49,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:31:49,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:31:49,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:31:49,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:31:49,145 INFO L87 Difference]: Start difference. First operand 131621 states and 164093 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:31:52,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:31:52,738 INFO L93 Difference]: Finished difference Result 262796 states and 327655 transitions. [2023-04-01 23:31:52,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:31:52,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 625 [2023-04-01 23:31:52,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:31:53,316 INFO L225 Difference]: With dead ends: 262796 [2023-04-01 23:31:53,316 INFO L226 Difference]: Without dead ends: 131181 [2023-04-01 23:31:53,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 638 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:31:53,398 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 497 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:31:53,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 745 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-01 23:31:53,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131181 states. [2023-04-01 23:31:55,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131181 to 129445. [2023-04-01 23:31:55,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129445 states, 127377 states have (on average 1.091869018739647) internal successors, (139079), 128008 states have internal predecessors, (139079), 588 states have call successors, (588), 588 states have call predecessors, (588), 1479 states have return successors, (16385), 848 states have call predecessors, (16385), 587 states have call successors, (16385) [2023-04-01 23:31:56,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129445 states to 129445 states and 156052 transitions. [2023-04-01 23:31:56,104 INFO L78 Accepts]: Start accepts. Automaton has 129445 states and 156052 transitions. Word has length 625 [2023-04-01 23:31:56,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:31:56,105 INFO L495 AbstractCegarLoop]: Abstraction has 129445 states and 156052 transitions. [2023-04-01 23:31:56,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:31:56,105 INFO L276 IsEmpty]: Start isEmpty. Operand 129445 states and 156052 transitions. [2023-04-01 23:31:56,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2023-04-01 23:31:56,142 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:31:56,142 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:31:56,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 23:31:56,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:31:56,491 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:31:56,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:31:56,492 INFO L85 PathProgramCache]: Analyzing trace with hash 2084996169, now seen corresponding path program 1 times [2023-04-01 23:31:56,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:31:56,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973864475] [2023-04-01 23:31:56,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:31:56,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:31:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:57,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:31:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:57,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:31:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:57,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:31:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:57,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:31:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:57,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2023-04-01 23:31:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:57,813 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 494 proven. 6 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2023-04-01 23:31:57,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:31:57,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973864475] [2023-04-01 23:31:57,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973864475] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:31:57,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049568338] [2023-04-01 23:31:57,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:31:57,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:31:57,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:31:57,817 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:31:57,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 23:31:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:31:58,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 23:31:58,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:31:58,380 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 412 proven. 2 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2023-04-01 23:31:58,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:31:59,140 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 412 proven. 2 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2023-04-01 23:31:59,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049568338] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:31:59,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:31:59,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 16 [2023-04-01 23:31:59,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6669756] [2023-04-01 23:31:59,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:31:59,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-01 23:31:59,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:31:59,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-01 23:31:59,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:31:59,145 INFO L87 Difference]: Start difference. First operand 129445 states and 156052 transitions. Second operand has 16 states, 16 states have (on average 59.375) internal successors, (950), 14 states have internal predecessors, (950), 6 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9)