/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/Problem14_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:55:44,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:55:44,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:55:44,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:55:44,115 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 22:55:44,138 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:55:44,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:55:44,138 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:55:44,139 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:55:44,139 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:55:44,140 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:55:44,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:55:44,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:55:44,140 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:55:44,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:55:44,141 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:55:44,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:55:44,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:55:44,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:55:44,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:55:44,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:55:44,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:55:44,142 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:55:44,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:55:44,142 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:55:44,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:55:44,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:55:44,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:55:44,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:55:44,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:55:44,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:55:44,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:55:44,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:55:44,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:55:44,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:55:44,143 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:55:44,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:55:44,143 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:55:44,143 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:55:44,143 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:55:44,143 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:55:44,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:55:44,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:55:44,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:55:44,338 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:55:44,338 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:55:44,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem14_label51.c [2023-04-01 22:55:45,245 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:55:45,472 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:55:45,472 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label51.c [2023-04-01 22:55:45,481 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e72dee38c/c6e447ac0aa24de88e93965c220f6c60/FLAGb11871814 [2023-04-01 22:55:45,509 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e72dee38c/c6e447ac0aa24de88e93965c220f6c60 [2023-04-01 22:55:45,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:55:45,511 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:55:45,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:55:45,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:55:45,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:55:45,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:55:45" (1/1) ... [2023-04-01 22:55:45,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26fcfb0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:55:45, skipping insertion in model container [2023-04-01 22:55:45,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:55:45" (1/1) ... [2023-04-01 22:55:45,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:55:45,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:55:45,678 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/Problem14_label51.c[3722,3735] [2023-04-01 22:55:45,813 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:55:45,824 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:55:45,837 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/Problem14_label51.c[3722,3735] [2023-04-01 22:55:45,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:55:45,916 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:55:45,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:55:45 WrapperNode [2023-04-01 22:55:45,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:55:45,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:55:45,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:55:45,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:55:45,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:55:45" (1/1) ... [2023-04-01 22:55:45,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:55:45" (1/1) ... [2023-04-01 22:55:45,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:55:45" (1/1) ... [2023-04-01 22:55:45,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:55:45" (1/1) ... [2023-04-01 22:55:45,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:55:45" (1/1) ... [2023-04-01 22:55:45,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:55:45" (1/1) ... [2023-04-01 22:55:45,998 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:55:45" (1/1) ... [2023-04-01 22:55:46,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:55:45" (1/1) ... [2023-04-01 22:55:46,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:55:46,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:55:46,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:55:46,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:55:46,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:55:45" (1/1) ... [2023-04-01 22:55:46,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:55:46,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:55:46,029 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 22:55:46,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 22:55:46,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:55:46,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:55:46,061 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:55:46,061 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:55:46,061 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:55:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:55:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:55:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:55:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:55:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:55:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:55:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:55:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:55:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:55:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:55:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:55:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:55:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:55:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:55:46,152 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:55:46,153 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:55:46,842 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:55:46,857 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:55:46,857 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:55:46,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:55:46 BoogieIcfgContainer [2023-04-01 22:55:46,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:55:46,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:55:46,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:55:46,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:55:46,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:55:45" (1/3) ... [2023-04-01 22:55:46,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c395e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:55:46, skipping insertion in model container [2023-04-01 22:55:46,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:55:45" (2/3) ... [2023-04-01 22:55:46,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c395e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:55:46, skipping insertion in model container [2023-04-01 22:55:46,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:55:46" (3/3) ... [2023-04-01 22:55:46,867 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label51.c [2023-04-01 22:55:46,879 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:55:46,880 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:55:46,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:55:46,930 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;@4b419289, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:55:46,930 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:55:46,934 INFO L276 IsEmpty]: Start isEmpty. Operand has 254 states, 246 states have (on average 1.7276422764227641) internal successors, (425), 247 states have internal predecessors, (425), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:55:46,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-04-01 22:55:46,939 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:55:46,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:55:46,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:55:46,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:55:46,943 INFO L85 PathProgramCache]: Analyzing trace with hash -955943406, now seen corresponding path program 1 times [2023-04-01 22:55:46,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:55:46,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606464482] [2023-04-01 22:55:46,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:55:46,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:55:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:47,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:55:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:47,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:55:47,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:55:47,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606464482] [2023-04-01 22:55:47,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606464482] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:55:47,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:55:47,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 22:55:47,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623636300] [2023-04-01 22:55:47,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:55:47,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:55:47,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:55:47,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:55:47,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:55:47,320 INFO L87 Difference]: Start difference. First operand has 254 states, 246 states have (on average 1.7276422764227641) internal successors, (425), 247 states have internal predecessors, (425), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 22:55:48,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:55:48,827 INFO L93 Difference]: Finished difference Result 886 states and 1613 transitions. [2023-04-01 22:55:48,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:55:48,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 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 41 [2023-04-01 22:55:48,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:55:48,839 INFO L225 Difference]: With dead ends: 886 [2023-04-01 22:55:48,839 INFO L226 Difference]: Without dead ends: 564 [2023-04-01 22:55:48,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:55:48,846 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 1249 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:55:48,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 31 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-01 22:55:48,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-04-01 22:55:48,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 558. [2023-04-01 22:55:48,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 546 states have (on average 1.6282051282051282) internal successors, (889), 548 states have internal predecessors, (889), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-04-01 22:55:48,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 906 transitions. [2023-04-01 22:55:48,898 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 906 transitions. Word has length 41 [2023-04-01 22:55:48,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:55:48,899 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 906 transitions. [2023-04-01 22:55:48,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 22:55:48,899 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 906 transitions. [2023-04-01 22:55:48,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-04-01 22:55:48,902 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:55:48,902 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:55:48,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:55:48,903 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:55:48,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:55:48,903 INFO L85 PathProgramCache]: Analyzing trace with hash 2026531722, now seen corresponding path program 1 times [2023-04-01 22:55:48,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:55:48,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177268316] [2023-04-01 22:55:48,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:55:48,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:55:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:49,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:55:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:49,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:55:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:49,183 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:55:49,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:55:49,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177268316] [2023-04-01 22:55:49,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177268316] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:55:49,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:55:49,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:55:49,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795520456] [2023-04-01 22:55:49,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:55:49,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:55:49,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:55:49,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:55:49,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:55:49,185 INFO L87 Difference]: Start difference. First operand 558 states and 906 transitions. Second operand has 7 states, 6 states have (on average 20.166666666666668) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:55:50,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:55:50,101 INFO L93 Difference]: Finished difference Result 1698 states and 2816 transitions. [2023-04-01 22:55:50,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 22:55:50,102 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.166666666666668) internal successors, (121), 4 states have internal predecessors, (121), 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 127 [2023-04-01 22:55:50,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:55:50,107 INFO L225 Difference]: With dead ends: 1698 [2023-04-01 22:55:50,107 INFO L226 Difference]: Without dead ends: 1146 [2023-04-01 22:55:50,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:55:50,109 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 816 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 22:55:50,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 38 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 22:55:50,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2023-04-01 22:55:50,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 566. [2023-04-01 22:55:50,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 550 states have (on average 1.481818181818182) internal successors, (815), 556 states have internal predecessors, (815), 5 states have call successors, (5), 5 states have call predecessors, (5), 10 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2023-04-01 22:55:50,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 839 transitions. [2023-04-01 22:55:50,143 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 839 transitions. Word has length 127 [2023-04-01 22:55:50,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:55:50,143 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 839 transitions. [2023-04-01 22:55:50,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.166666666666668) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:55:50,144 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 839 transitions. [2023-04-01 22:55:50,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-01 22:55:50,145 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:55:50,145 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:55:50,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 22:55:50,146 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:55:50,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:55:50,146 INFO L85 PathProgramCache]: Analyzing trace with hash 604128319, now seen corresponding path program 1 times [2023-04-01 22:55:50,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:55:50,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398138120] [2023-04-01 22:55:50,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:55:50,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:55:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:50,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:55:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:50,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:55:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:50,325 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:55:50,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:55:50,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398138120] [2023-04-01 22:55:50,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398138120] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:55:50,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397281300] [2023-04-01 22:55:50,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:55:50,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:55:50,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:55:50,328 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:55:50,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 22:55:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:50,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:55:50,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:55:50,491 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:55:50,491 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:55:50,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397281300] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:55:50,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:55:50,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:55:50,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521441831] [2023-04-01 22:55:50,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:55:50,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:55:50,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:55:50,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:55:50,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:55:50,493 INFO L87 Difference]: Start difference. First operand 566 states and 839 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:55:51,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:55:51,025 INFO L93 Difference]: Finished difference Result 1682 states and 2536 transitions. [2023-04-01 22:55:51,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:55:51,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 136 [2023-04-01 22:55:51,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:55:51,030 INFO L225 Difference]: With dead ends: 1682 [2023-04-01 22:55:51,030 INFO L226 Difference]: Without dead ends: 1122 [2023-04-01 22:55:51,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:55:51,032 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 146 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:55:51,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 323 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 22:55:51,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2023-04-01 22:55:51,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 936. [2023-04-01 22:55:51,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 913 states have (on average 1.362541073384447) internal successors, (1244), 922 states have internal predecessors, (1244), 7 states have call successors, (7), 7 states have call predecessors, (7), 15 states have return successors, (41), 6 states have call predecessors, (41), 6 states have call successors, (41) [2023-04-01 22:55:51,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1292 transitions. [2023-04-01 22:55:51,054 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1292 transitions. Word has length 136 [2023-04-01 22:55:51,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:55:51,054 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1292 transitions. [2023-04-01 22:55:51,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:55:51,055 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1292 transitions. [2023-04-01 22:55:51,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-04-01 22:55:51,057 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:55:51,057 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:55:51,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 22:55:51,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:55:51,263 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:55:51,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:55:51,263 INFO L85 PathProgramCache]: Analyzing trace with hash -432587105, now seen corresponding path program 1 times [2023-04-01 22:55:51,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:55:51,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677617092] [2023-04-01 22:55:51,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:55:51,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:55:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:51,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:55:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:51,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:55:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:51,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-04-01 22:55:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:51,631 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:55:51,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:55:51,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677617092] [2023-04-01 22:55:51,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677617092] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:55:51,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482517535] [2023-04-01 22:55:51,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:55:51,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:55:51,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:55:51,635 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:55:51,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 22:55:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:51,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:55:51,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:55:51,856 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:55:51,856 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:55:52,088 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:55:52,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482517535] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:55:52,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:55:52,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 22:55:52,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378888827] [2023-04-01 22:55:52,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:55:52,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 22:55:52,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:55:52,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 22:55:52,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:55:52,090 INFO L87 Difference]: Start difference. First operand 936 states and 1292 transitions. Second operand has 12 states, 12 states have (on average 31.25) internal successors, (375), 10 states have internal predecessors, (375), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 22:55:53,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:55:53,889 INFO L93 Difference]: Finished difference Result 3212 states and 4627 transitions. [2023-04-01 22:55:53,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 22:55:53,892 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 31.25) internal successors, (375), 10 states have internal predecessors, (375), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 210 [2023-04-01 22:55:53,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:55:53,901 INFO L225 Difference]: With dead ends: 3212 [2023-04-01 22:55:53,901 INFO L226 Difference]: Without dead ends: 2098 [2023-04-01 22:55:53,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 425 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2023-04-01 22:55:53,904 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 947 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 2295 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 2903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 2295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:55:53,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 104 Invalid, 2903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [608 Valid, 2295 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-01 22:55:53,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2023-04-01 22:55:53,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 1502. [2023-04-01 22:55:53,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1463 states have (on average 1.2453861927546137) internal successors, (1822), 1482 states have internal predecessors, (1822), 10 states have call successors, (10), 10 states have call predecessors, (10), 28 states have return successors, (79), 9 states have call predecessors, (79), 9 states have call successors, (79) [2023-04-01 22:55:53,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 1911 transitions. [2023-04-01 22:55:53,945 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 1911 transitions. Word has length 210 [2023-04-01 22:55:53,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:55:53,946 INFO L495 AbstractCegarLoop]: Abstraction has 1502 states and 1911 transitions. [2023-04-01 22:55:53,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 31.25) internal successors, (375), 10 states have internal predecessors, (375), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 22:55:53,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 1911 transitions. [2023-04-01 22:55:53,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-04-01 22:55:53,956 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:55:53,956 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:55:53,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 22:55:54,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-04-01 22:55:54,162 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:55:54,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:55:54,162 INFO L85 PathProgramCache]: Analyzing trace with hash -257432234, now seen corresponding path program 1 times [2023-04-01 22:55:54,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:55:54,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996416630] [2023-04-01 22:55:54,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:55:54,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:55:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:54,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:55:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:54,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:55:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:54,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-04-01 22:55:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:54,370 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-04-01 22:55:54,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:55:54,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996416630] [2023-04-01 22:55:54,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996416630] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:55:54,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235176380] [2023-04-01 22:55:54,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:55:54,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:55:54,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:55:54,371 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:55:54,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 22:55:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:54,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:55:54,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:55:54,494 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-04-01 22:55:54,494 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:55:54,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235176380] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:55:54,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:55:54,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:55:54,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184122528] [2023-04-01 22:55:54,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:55:54,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:55:54,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:55:54,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:55:54,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:55:54,495 INFO L87 Difference]: Start difference. First operand 1502 states and 1911 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:55:54,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:55:54,967 INFO L93 Difference]: Finished difference Result 3916 states and 5081 transitions. [2023-04-01 22:55:54,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:55:54,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 239 [2023-04-01 22:55:54,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:55:54,976 INFO L225 Difference]: With dead ends: 3916 [2023-04-01 22:55:54,976 INFO L226 Difference]: Without dead ends: 2420 [2023-04-01 22:55:54,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:55:54,979 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 146 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:55:54,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 325 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 22:55:54,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2023-04-01 22:55:55,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 2054. [2023-04-01 22:55:55,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 2006 states have (on average 1.2253240279162512) internal successors, (2458), 2028 states have internal predecessors, (2458), 13 states have call successors, (13), 13 states have call predecessors, (13), 34 states have return successors, (120), 12 states have call predecessors, (120), 12 states have call successors, (120) [2023-04-01 22:55:55,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 2591 transitions. [2023-04-01 22:55:55,046 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 2591 transitions. Word has length 239 [2023-04-01 22:55:55,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:55:55,046 INFO L495 AbstractCegarLoop]: Abstraction has 2054 states and 2591 transitions. [2023-04-01 22:55:55,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:55:55,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 2591 transitions. [2023-04-01 22:55:55,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-04-01 22:55:55,049 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:55:55,049 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:55:55,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 22:55:55,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:55:55,255 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:55:55,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:55:55,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1435103079, now seen corresponding path program 1 times [2023-04-01 22:55:55,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:55:55,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391749716] [2023-04-01 22:55:55,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:55:55,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:55:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:55,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:55:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:55,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:55:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:55,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-04-01 22:55:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:55,850 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 138 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:55:55,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:55:55,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391749716] [2023-04-01 22:55:55,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391749716] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:55:55,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55052165] [2023-04-01 22:55:55,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:55:55,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:55:55,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:55:55,852 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:55:55,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 22:55:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:55,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 22:55:55,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:55:56,280 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-04-01 22:55:56,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:55:56,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55052165] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:55:56,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:55:56,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-04-01 22:55:56,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916934997] [2023-04-01 22:55:56,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:55:56,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:55:56,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:55:56,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:55:56,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:55:56,282 INFO L87 Difference]: Start difference. First operand 2054 states and 2591 transitions. Second operand has 5 states, 5 states have (on average 43.4) internal successors, (217), 4 states have internal predecessors, (217), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:55:56,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:55:56,932 INFO L93 Difference]: Finished difference Result 3748 states and 4774 transitions. [2023-04-01 22:55:56,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:55:56,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.4) internal successors, (217), 4 states have internal predecessors, (217), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 258 [2023-04-01 22:55:56,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:55:56,938 INFO L225 Difference]: With dead ends: 3748 [2023-04-01 22:55:56,938 INFO L226 Difference]: Without dead ends: 2066 [2023-04-01 22:55:56,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-04-01 22:55:56,942 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 340 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:55:56,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 54 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 22:55:56,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2023-04-01 22:55:56,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 2060. [2023-04-01 22:55:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 2009 states have (on average 1.2200099552015928) internal successors, (2451), 2034 states have internal predecessors, (2451), 13 states have call successors, (13), 13 states have call predecessors, (13), 37 states have return successors, (119), 12 states have call predecessors, (119), 12 states have call successors, (119) [2023-04-01 22:55:56,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 2583 transitions. [2023-04-01 22:55:56,983 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 2583 transitions. Word has length 258 [2023-04-01 22:55:56,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:55:56,984 INFO L495 AbstractCegarLoop]: Abstraction has 2060 states and 2583 transitions. [2023-04-01 22:55:56,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.4) internal successors, (217), 4 states have internal predecessors, (217), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:55:56,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 2583 transitions. [2023-04-01 22:55:56,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2023-04-01 22:55:56,990 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:55:56,990 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:55:56,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 22:55:57,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:55:57,197 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:55:57,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:55:57,198 INFO L85 PathProgramCache]: Analyzing trace with hash 233035302, now seen corresponding path program 1 times [2023-04-01 22:55:57,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:55:57,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723635879] [2023-04-01 22:55:57,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:55:57,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:55:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:57,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:55:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:57,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:55:57,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:57,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-01 22:55:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:57,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-04-01 22:55:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:57,873 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 176 proven. 104 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-04-01 22:55:57,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:55:57,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723635879] [2023-04-01 22:55:57,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723635879] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:55:57,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262695018] [2023-04-01 22:55:57,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:55:57,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:55:57,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:55:57,874 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:55:57,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 22:55:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:57,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 22:55:57,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:55:58,229 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-04-01 22:55:58,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:55:58,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262695018] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:55:58,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:55:58,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-04-01 22:55:58,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072190652] [2023-04-01 22:55:58,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:55:58,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:55:58,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:55:58,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:55:58,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-04-01 22:55:58,233 INFO L87 Difference]: Start difference. First operand 2060 states and 2583 transitions. Second operand has 5 states, 5 states have (on average 37.2) internal successors, (186), 4 states have internal predecessors, (186), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:55:58,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:55:58,874 INFO L93 Difference]: Finished difference Result 3954 states and 4992 transitions. [2023-04-01 22:55:58,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 22:55:58,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 4 states have internal predecessors, (186), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 331 [2023-04-01 22:55:58,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:55:58,882 INFO L225 Difference]: With dead ends: 3954 [2023-04-01 22:55:58,882 INFO L226 Difference]: Without dead ends: 2266 [2023-04-01 22:55:58,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-04-01 22:55:58,885 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 423 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:55:58,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 54 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 22:55:58,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2266 states. [2023-04-01 22:55:58,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2266 to 1878. [2023-04-01 22:55:58,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1829 states have (on average 1.2290869327501366) internal successors, (2248), 1854 states have internal predecessors, (2248), 12 states have call successors, (12), 12 states have call predecessors, (12), 36 states have return successors, (105), 11 states have call predecessors, (105), 11 states have call successors, (105) [2023-04-01 22:55:58,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2365 transitions. [2023-04-01 22:55:58,926 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2365 transitions. Word has length 331 [2023-04-01 22:55:58,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:55:58,926 INFO L495 AbstractCegarLoop]: Abstraction has 1878 states and 2365 transitions. [2023-04-01 22:55:58,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 4 states have internal predecessors, (186), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:55:58,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2365 transitions. [2023-04-01 22:55:58,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2023-04-01 22:55:58,929 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:55:58,930 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:55:58,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 22:55:59,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:55:59,136 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:55:59,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:55:59,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1358375443, now seen corresponding path program 1 times [2023-04-01 22:55:59,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:55:59,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730263257] [2023-04-01 22:55:59,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:55:59,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:55:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:59,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:55:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:59,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:55:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:59,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-01 22:55:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:59,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-04-01 22:55:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:59,844 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 136 proven. 232 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 22:55:59,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:55:59,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730263257] [2023-04-01 22:55:59,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730263257] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:55:59,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312130110] [2023-04-01 22:55:59,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:55:59,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:55:59,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:55:59,846 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:55:59,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 22:55:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:55:59,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 15 conjunts are in the unsatisfiable core [2023-04-01 22:55:59,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:56:00,886 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 338 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-04-01 22:56:00,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:56:03,121 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 107 proven. 264 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 22:56:03,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312130110] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:56:03,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:56:03,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2023-04-01 22:56:03,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70473271] [2023-04-01 22:56:03,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:56:03,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-01 22:56:03,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:56:03,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-01 22:56:03,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2023-04-01 22:56:03,124 INFO L87 Difference]: Start difference. First operand 1878 states and 2365 transitions. Second operand has 22 states, 22 states have (on average 35.68181818181818) internal successors, (785), 21 states have internal predecessors, (785), 7 states have call successors, (14), 11 states have call predecessors, (14), 10 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) [2023-04-01 22:56:06,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:56:06,659 INFO L93 Difference]: Finished difference Result 5541 states and 7302 transitions. [2023-04-01 22:56:06,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-04-01 22:56:06,660 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 35.68181818181818) internal successors, (785), 21 states have internal predecessors, (785), 7 states have call successors, (14), 11 states have call predecessors, (14), 10 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) Word has length 342 [2023-04-01 22:56:06,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:56:06,671 INFO L225 Difference]: With dead ends: 5541 [2023-04-01 22:56:06,671 INFO L226 Difference]: Without dead ends: 3598 [2023-04-01 22:56:06,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 707 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=779, Invalid=2527, Unknown=0, NotChecked=0, Total=3306 [2023-04-01 22:56:06,677 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 3558 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3413 mSolverCounterSat, 988 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3564 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 4401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 988 IncrementalHoareTripleChecker+Valid, 3413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:56:06,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3564 Valid, 153 Invalid, 4401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [988 Valid, 3413 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-01 22:56:06,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3598 states. [2023-04-01 22:56:06,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3598 to 3344. [2023-04-01 22:56:06,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3344 states, 3274 states have (on average 1.0705558949297496) internal successors, (3505), 3304 states have internal predecessors, (3505), 20 states have call successors, (20), 20 states have call predecessors, (20), 49 states have return successors, (167), 19 states have call predecessors, (167), 19 states have call successors, (167) [2023-04-01 22:56:06,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3344 states to 3344 states and 3692 transitions. [2023-04-01 22:56:06,745 INFO L78 Accepts]: Start accepts. Automaton has 3344 states and 3692 transitions. Word has length 342 [2023-04-01 22:56:06,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:56:06,745 INFO L495 AbstractCegarLoop]: Abstraction has 3344 states and 3692 transitions. [2023-04-01 22:56:06,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 35.68181818181818) internal successors, (785), 21 states have internal predecessors, (785), 7 states have call successors, (14), 11 states have call predecessors, (14), 10 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) [2023-04-01 22:56:06,745 INFO L276 IsEmpty]: Start isEmpty. Operand 3344 states and 3692 transitions. [2023-04-01 22:56:06,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2023-04-01 22:56:06,751 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:56:06,751 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:56:06,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-04-01 22:56:06,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:56:06,957 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:56:06,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:56:06,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1517091802, now seen corresponding path program 1 times [2023-04-01 22:56:06,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:56:06,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511045274] [2023-04-01 22:56:06,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:56:06,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:56:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:07,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:56:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:07,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:56:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:07,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-01 22:56:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:07,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-04-01 22:56:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:07,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-04-01 22:56:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:07,265 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 217 proven. 148 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-04-01 22:56:07,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:56:07,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511045274] [2023-04-01 22:56:07,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511045274] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:56:07,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36791309] [2023-04-01 22:56:07,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:56:07,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:56:07,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:56:07,266 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:56:07,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 22:56:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:07,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:56:07,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:56:07,473 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 506 proven. 2 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-04-01 22:56:07,473 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:56:07,675 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 218 proven. 150 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2023-04-01 22:56:07,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36791309] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:56:07,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:56:07,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 22:56:07,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522580015] [2023-04-01 22:56:07,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:56:07,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 22:56:07,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:56:07,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 22:56:07,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:56:07,679 INFO L87 Difference]: Start difference. First operand 3344 states and 3692 transitions. Second operand has 12 states, 12 states have (on average 37.916666666666664) internal successors, (455), 10 states have internal predecessors, (455), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 22:56:08,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:56:08,946 INFO L93 Difference]: Finished difference Result 7620 states and 8618 transitions. [2023-04-01 22:56:08,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-01 22:56:08,948 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 37.916666666666664) internal successors, (455), 10 states have internal predecessors, (455), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 443 [2023-04-01 22:56:08,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:56:08,959 INFO L225 Difference]: With dead ends: 7620 [2023-04-01 22:56:08,960 INFO L226 Difference]: Without dead ends: 4648 [2023-04-01 22:56:08,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 928 GetRequests, 903 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2023-04-01 22:56:08,966 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 1486 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1571 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:56:08,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 82 Invalid, 1734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1571 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 22:56:08,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4648 states. [2023-04-01 22:56:09,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4648 to 4464. [2023-04-01 22:56:09,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4464 states, 4368 states have (on average 1.0682234432234432) internal successors, (4666), 4412 states have internal predecessors, (4666), 26 states have call successors, (26), 26 states have call predecessors, (26), 69 states have return successors, (270), 25 states have call predecessors, (270), 25 states have call successors, (270) [2023-04-01 22:56:09,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4464 states to 4464 states and 4962 transitions. [2023-04-01 22:56:09,044 INFO L78 Accepts]: Start accepts. Automaton has 4464 states and 4962 transitions. Word has length 443 [2023-04-01 22:56:09,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:56:09,044 INFO L495 AbstractCegarLoop]: Abstraction has 4464 states and 4962 transitions. [2023-04-01 22:56:09,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 37.916666666666664) internal successors, (455), 10 states have internal predecessors, (455), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 22:56:09,044 INFO L276 IsEmpty]: Start isEmpty. Operand 4464 states and 4962 transitions. [2023-04-01 22:56:09,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2023-04-01 22:56:09,054 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:56:09,055 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:56:09,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 22:56:09,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:56:09,263 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:56:09,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:56:09,263 INFO L85 PathProgramCache]: Analyzing trace with hash 601936054, now seen corresponding path program 1 times [2023-04-01 22:56:09,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:56:09,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704852627] [2023-04-01 22:56:09,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:56:09,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:56:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:09,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:56:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:09,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:56:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:09,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-01 22:56:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:10,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-04-01 22:56:10,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:10,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2023-04-01 22:56:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:10,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2023-04-01 22:56:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:10,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1249 backedges. 329 proven. 535 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-04-01 22:56:10,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:56:10,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704852627] [2023-04-01 22:56:10,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704852627] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:56:10,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318256089] [2023-04-01 22:56:10,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:56:10,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:56:10,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:56:10,334 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:56:10,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 22:56:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:10,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 22:56:10,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:56:10,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1249 backedges. 890 proven. 2 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2023-04-01 22:56:10,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:56:11,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1249 backedges. 517 proven. 105 refuted. 0 times theorem prover too weak. 627 trivial. 0 not checked. [2023-04-01 22:56:11,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318256089] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:56:11,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:56:11,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 12 [2023-04-01 22:56:11,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039942718] [2023-04-01 22:56:11,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:56:11,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 22:56:11,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:56:11,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 22:56:11,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:56:11,225 INFO L87 Difference]: Start difference. First operand 4464 states and 4962 transitions. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 10 states have internal predecessors, (609), 5 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 22:56:12,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:56:12,668 INFO L93 Difference]: Finished difference Result 9686 states and 10820 transitions. [2023-04-01 22:56:12,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 22:56:12,669 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 10 states have internal predecessors, (609), 5 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 639 [2023-04-01 22:56:12,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:56:12,683 INFO L225 Difference]: With dead ends: 9686 [2023-04-01 22:56:12,683 INFO L226 Difference]: Without dead ends: 5226 [2023-04-01 22:56:12,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1327 GetRequests, 1301 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=217, Invalid=539, Unknown=0, NotChecked=0, Total=756 [2023-04-01 22:56:12,691 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 2575 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2575 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:56:12,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2575 Valid, 49 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 22:56:12,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5226 states. [2023-04-01 22:56:12,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5226 to 4650. [2023-04-01 22:56:12,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4650 states, 4550 states have (on average 1.06) internal successors, (4823), 4596 states have internal predecessors, (4823), 27 states have call successors, (27), 27 states have call predecessors, (27), 72 states have return successors, (255), 26 states have call predecessors, (255), 26 states have call successors, (255) [2023-04-01 22:56:12,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4650 states to 4650 states and 5105 transitions. [2023-04-01 22:56:12,780 INFO L78 Accepts]: Start accepts. Automaton has 4650 states and 5105 transitions. Word has length 639 [2023-04-01 22:56:12,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:56:12,780 INFO L495 AbstractCegarLoop]: Abstraction has 4650 states and 5105 transitions. [2023-04-01 22:56:12,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 10 states have internal predecessors, (609), 5 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 22:56:12,781 INFO L276 IsEmpty]: Start isEmpty. Operand 4650 states and 5105 transitions. [2023-04-01 22:56:12,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 713 [2023-04-01 22:56:12,787 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:56:12,787 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:56:12,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-01 22:56:12,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-04-01 22:56:12,993 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:56:12,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:56:12,994 INFO L85 PathProgramCache]: Analyzing trace with hash 606008759, now seen corresponding path program 1 times [2023-04-01 22:56:12,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:56:12,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189962932] [2023-04-01 22:56:12,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:56:12,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:56:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:13,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:56:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:13,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:56:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:13,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-01 22:56:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:13,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-04-01 22:56:13,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:13,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2023-04-01 22:56:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:13,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2023-04-01 22:56:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:14,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2023-04-01 22:56:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:14,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1648 backedges. 621 proven. 116 refuted. 0 times theorem prover too weak. 911 trivial. 0 not checked. [2023-04-01 22:56:14,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:56:14,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189962932] [2023-04-01 22:56:14,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189962932] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:56:14,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858421962] [2023-04-01 22:56:14,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:56:14,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:56:14,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:56:14,034 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:56:14,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 22:56:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:14,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 22:56:14,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:56:14,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1648 backedges. 1073 proven. 2 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2023-04-01 22:56:14,556 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:56:15,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1648 backedges. 631 proven. 105 refuted. 0 times theorem prover too weak. 912 trivial. 0 not checked. [2023-04-01 22:56:15,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858421962] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:56:15,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:56:15,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 16 [2023-04-01 22:56:15,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294110018] [2023-04-01 22:56:15,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:56:15,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-01 22:56:15,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:56:15,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-01 22:56:15,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:56:15,976 INFO L87 Difference]: Start difference. First operand 4650 states and 5105 transitions. Second operand has 16 states, 16 states have (on average 38.5625) internal successors, (617), 14 states have internal predecessors, (617), 6 states have call successors, (12), 7 states have call predecessors, (12), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-04-01 22:56:19,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:56:19,011 INFO L93 Difference]: Finished difference Result 8883 states and 9846 transitions. [2023-04-01 22:56:19,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-04-01 22:56:19,011 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 38.5625) internal successors, (617), 14 states have internal predecessors, (617), 6 states have call successors, (12), 7 states have call predecessors, (12), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 712 [2023-04-01 22:56:19,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:56:19,021 INFO L225 Difference]: With dead ends: 8883 [2023-04-01 22:56:19,021 INFO L226 Difference]: Without dead ends: 4357 [2023-04-01 22:56:19,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1507 GetRequests, 1453 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=685, Invalid=2285, Unknown=0, NotChecked=0, Total=2970 [2023-04-01 22:56:19,027 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 2725 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2729 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 2639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:56:19,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2729 Valid, 133 Invalid, 2639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 22:56:19,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4357 states. [2023-04-01 22:56:19,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4357 to 3910. [2023-04-01 22:56:19,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3910 states, 3824 states have (on average 1.0525627615062763) internal successors, (4025), 3864 states have internal predecessors, (4025), 23 states have call successors, (23), 23 states have call predecessors, (23), 62 states have return successors, (211), 22 states have call predecessors, (211), 22 states have call successors, (211) [2023-04-01 22:56:19,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3910 states to 3910 states and 4259 transitions. [2023-04-01 22:56:19,104 INFO L78 Accepts]: Start accepts. Automaton has 3910 states and 4259 transitions. Word has length 712 [2023-04-01 22:56:19,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:56:19,105 INFO L495 AbstractCegarLoop]: Abstraction has 3910 states and 4259 transitions. [2023-04-01 22:56:19,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 38.5625) internal successors, (617), 14 states have internal predecessors, (617), 6 states have call successors, (12), 7 states have call predecessors, (12), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-04-01 22:56:19,106 INFO L276 IsEmpty]: Start isEmpty. Operand 3910 states and 4259 transitions. [2023-04-01 22:56:19,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2023-04-01 22:56:19,112 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:56:19,112 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:56:19,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 22:56:19,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:56:19,319 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:56:19,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:56:19,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1586606429, now seen corresponding path program 1 times [2023-04-01 22:56:19,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:56:19,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073035698] [2023-04-01 22:56:19,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:56:19,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:56:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:20,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:56:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:20,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:56:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:20,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-01 22:56:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:20,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-04-01 22:56:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:20,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2023-04-01 22:56:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:20,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2023-04-01 22:56:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:20,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2023-04-01 22:56:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:20,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1718 backedges. 752 proven. 17 refuted. 0 times theorem prover too weak. 949 trivial. 0 not checked. [2023-04-01 22:56:20,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:56:20,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073035698] [2023-04-01 22:56:20,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073035698] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:56:20,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571123766] [2023-04-01 22:56:20,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:56:20,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:56:20,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:56:20,335 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:56:20,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 22:56:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:20,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:56:20,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:56:20,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1718 backedges. 1190 proven. 2 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2023-04-01 22:56:20,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:56:20,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1718 backedges. 460 proven. 150 refuted. 0 times theorem prover too weak. 1108 trivial. 0 not checked. [2023-04-01 22:56:20,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571123766] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:56:20,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:56:20,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2023-04-01 22:56:20,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721383211] [2023-04-01 22:56:20,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:56:20,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 22:56:20,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:56:20,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 22:56:20,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-04-01 22:56:20,854 INFO L87 Difference]: Start difference. First operand 3910 states and 4259 transitions. Second operand has 14 states, 14 states have (on average 46.5) internal successors, (651), 12 states have internal predecessors, (651), 5 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 22:56:23,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:56:23,655 INFO L93 Difference]: Finished difference Result 7994 states and 8758 transitions. [2023-04-01 22:56:23,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-04-01 22:56:23,656 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 46.5) internal successors, (651), 12 states have internal predecessors, (651), 5 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 766 [2023-04-01 22:56:23,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:56:23,671 INFO L225 Difference]: With dead ends: 7994 [2023-04-01 22:56:23,671 INFO L226 Difference]: Without dead ends: 4456 [2023-04-01 22:56:23,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1634 GetRequests, 1573 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1116 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=618, Invalid=3042, Unknown=0, NotChecked=0, Total=3660 [2023-04-01 22:56:23,676 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 6389 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 3303 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6389 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 3643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 3303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:56:23,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6389 Valid, 219 Invalid, 3643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 3303 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-01 22:56:23,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4456 states. [2023-04-01 22:56:23,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4456 to 4450. [2023-04-01 22:56:23,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4450 states, 4361 states have (on average 1.0408163265306123) internal successors, (4539), 4398 states have internal predecessors, (4539), 26 states have call successors, (26), 26 states have call predecessors, (26), 62 states have return successors, (187), 25 states have call predecessors, (187), 25 states have call successors, (187) [2023-04-01 22:56:23,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4450 states to 4450 states and 4752 transitions. [2023-04-01 22:56:23,752 INFO L78 Accepts]: Start accepts. Automaton has 4450 states and 4752 transitions. Word has length 766 [2023-04-01 22:56:23,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:56:23,753 INFO L495 AbstractCegarLoop]: Abstraction has 4450 states and 4752 transitions. [2023-04-01 22:56:23,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 46.5) internal successors, (651), 12 states have internal predecessors, (651), 5 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 22:56:23,753 INFO L276 IsEmpty]: Start isEmpty. Operand 4450 states and 4752 transitions. [2023-04-01 22:56:23,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 978 [2023-04-01 22:56:23,763 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:56:23,763 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:56:23,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-01 22:56:23,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-01 22:56:23,970 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:56:23,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:56:23,970 INFO L85 PathProgramCache]: Analyzing trace with hash -385350634, now seen corresponding path program 1 times [2023-04-01 22:56:23,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:56:23,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11699590] [2023-04-01 22:56:23,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:56:23,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:56:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:24,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:56:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:24,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:56:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:24,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-01 22:56:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:24,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-04-01 22:56:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:24,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-04-01 22:56:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:24,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2023-04-01 22:56:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:24,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2023-04-01 22:56:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:24,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 769 [2023-04-01 22:56:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:24,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2536 backedges. 246 proven. 28 refuted. 0 times theorem prover too weak. 2262 trivial. 0 not checked. [2023-04-01 22:56:24,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:56:24,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11699590] [2023-04-01 22:56:24,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11699590] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:56:24,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43220434] [2023-04-01 22:56:24,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:56:24,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:56:24,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:56:24,750 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:56:24,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-01 22:56:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:24,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 1366 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:56:24,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:56:25,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2536 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 2280 trivial. 0 not checked. [2023-04-01 22:56:25,038 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:56:25,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43220434] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:56:25,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:56:25,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2023-04-01 22:56:25,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109408039] [2023-04-01 22:56:25,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:56:25,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:56:25,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:56:25,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:56:25,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:56:25,040 INFO L87 Difference]: Start difference. First operand 4450 states and 4752 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:56:25,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:56:25,354 INFO L93 Difference]: Finished difference Result 8528 states and 9130 transitions. [2023-04-01 22:56:25,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:56:25,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 977 [2023-04-01 22:56:25,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:56:25,363 INFO L225 Difference]: With dead ends: 8528 [2023-04-01 22:56:25,363 INFO L226 Difference]: Without dead ends: 4450 [2023-04-01 22:56:25,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 999 GetRequests, 994 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:56:25,368 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 148 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:56:25,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 222 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 22:56:25,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4450 states. [2023-04-01 22:56:25,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4450 to 4268. [2023-04-01 22:56:25,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4268 states, 4181 states have (on average 1.0353982300884956) internal successors, (4329), 4218 states have internal predecessors, (4329), 25 states have call successors, (25), 25 states have call predecessors, (25), 61 states have return successors, (160), 24 states have call predecessors, (160), 24 states have call successors, (160) [2023-04-01 22:56:25,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4268 states to 4268 states and 4514 transitions. [2023-04-01 22:56:25,436 INFO L78 Accepts]: Start accepts. Automaton has 4268 states and 4514 transitions. Word has length 977 [2023-04-01 22:56:25,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:56:25,437 INFO L495 AbstractCegarLoop]: Abstraction has 4268 states and 4514 transitions. [2023-04-01 22:56:25,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:56:25,437 INFO L276 IsEmpty]: Start isEmpty. Operand 4268 states and 4514 transitions. [2023-04-01 22:56:25,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 987 [2023-04-01 22:56:25,445 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:56:25,446 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:56:25,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-01 22:56:25,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 22:56:25,652 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:56:25,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:56:25,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1610815983, now seen corresponding path program 1 times [2023-04-01 22:56:25,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:56:25,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271870039] [2023-04-01 22:56:25,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:56:25,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:56:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:26,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:56:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:26,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:56:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:26,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-01 22:56:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:26,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-04-01 22:56:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:26,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-04-01 22:56:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:26,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2023-04-01 22:56:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:26,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2023-04-01 22:56:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:26,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 769 [2023-04-01 22:56:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:26,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 848 [2023-04-01 22:56:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:26,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2966 backedges. 530 proven. 467 refuted. 0 times theorem prover too weak. 1969 trivial. 0 not checked. [2023-04-01 22:56:26,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:56:26,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271870039] [2023-04-01 22:56:26,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271870039] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:56:26,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562309433] [2023-04-01 22:56:26,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:56:26,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:56:26,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:56:26,376 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:56:26,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-01 22:56:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:26,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 1411 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:56:26,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:56:26,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2966 backedges. 2011 proven. 2 refuted. 0 times theorem prover too weak. 953 trivial. 0 not checked. [2023-04-01 22:56:26,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:56:28,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2966 backedges. 653 proven. 431 refuted. 0 times theorem prover too weak. 1882 trivial. 0 not checked. [2023-04-01 22:56:28,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562309433] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:56:28,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:56:28,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:56:28,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110516318] [2023-04-01 22:56:28,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:56:28,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:56:28,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:56:28,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:56:28,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:56:28,027 INFO L87 Difference]: Start difference. First operand 4268 states and 4514 transitions. Second operand has 11 states, 11 states have (on average 75.27272727272727) internal successors, (828), 9 states have internal predecessors, (828), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 22:56:28,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:56:28,938 INFO L93 Difference]: Finished difference Result 9682 states and 10342 transitions. [2023-04-01 22:56:28,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 22:56:28,939 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 75.27272727272727) internal successors, (828), 9 states have internal predecessors, (828), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 986 [2023-04-01 22:56:28,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:56:28,948 INFO L225 Difference]: With dead ends: 9682 [2023-04-01 22:56:28,949 INFO L226 Difference]: Without dead ends: 5786 [2023-04-01 22:56:28,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2017 GetRequests, 1994 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2023-04-01 22:56:28,955 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 2089 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2096 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:56:28,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2096 Valid, 90 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 22:56:28,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5786 states. [2023-04-01 22:56:29,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5786 to 5562. [2023-04-01 22:56:29,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5562 states, 5451 states have (on average 1.0302696752889378) internal successors, (5616), 5498 states have internal predecessors, (5616), 32 states have call successors, (32), 32 states have call predecessors, (32), 78 states have return successors, (188), 31 states have call predecessors, (188), 31 states have call successors, (188) [2023-04-01 22:56:29,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5562 states to 5562 states and 5836 transitions. [2023-04-01 22:56:29,047 INFO L78 Accepts]: Start accepts. Automaton has 5562 states and 5836 transitions. Word has length 986 [2023-04-01 22:56:29,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:56:29,047 INFO L495 AbstractCegarLoop]: Abstraction has 5562 states and 5836 transitions. [2023-04-01 22:56:29,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 75.27272727272727) internal successors, (828), 9 states have internal predecessors, (828), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 22:56:29,047 INFO L276 IsEmpty]: Start isEmpty. Operand 5562 states and 5836 transitions. [2023-04-01 22:56:29,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 994 [2023-04-01 22:56:29,077 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:56:29,077 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:56:29,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-04-01 22:56:29,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-01 22:56:29,283 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:56:29,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:56:29,284 INFO L85 PathProgramCache]: Analyzing trace with hash 264675742, now seen corresponding path program 1 times [2023-04-01 22:56:29,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:56:29,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902284534] [2023-04-01 22:56:29,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:56:29,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:56:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:30,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:56:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:30,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:56:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:30,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-01 22:56:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:30,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-04-01 22:56:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:30,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2023-04-01 22:56:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:30,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2023-04-01 22:56:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:30,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2023-04-01 22:56:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:31,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 776 [2023-04-01 22:56:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:31,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2023-04-01 22:56:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:31,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2980 backedges. 1016 proven. 541 refuted. 0 times theorem prover too weak. 1423 trivial. 0 not checked. [2023-04-01 22:56:31,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:56:31,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902284534] [2023-04-01 22:56:31,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902284534] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:56:31,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749632649] [2023-04-01 22:56:31,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:56:31,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:56:31,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:56:31,085 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:56:31,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-04-01 22:56:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:31,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 1418 conjuncts, 9 conjunts are in the unsatisfiable core [2023-04-01 22:56:31,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:56:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2980 backedges. 1910 proven. 6 refuted. 0 times theorem prover too weak. 1064 trivial. 0 not checked. [2023-04-01 22:56:31,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:56:32,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2980 backedges. 1289 proven. 257 refuted. 0 times theorem prover too weak. 1434 trivial. 0 not checked. [2023-04-01 22:56:32,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749632649] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:56:32,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:56:32,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7, 8] total 26 [2023-04-01 22:56:32,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269852965] [2023-04-01 22:56:32,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:56:32,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-04-01 22:56:32,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:56:32,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-04-01 22:56:32,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-04-01 22:56:32,295 INFO L87 Difference]: Start difference. First operand 5562 states and 5836 transitions. Second operand has 26 states, 26 states have (on average 38.34615384615385) internal successors, (997), 24 states have internal predecessors, (997), 10 states have call successors, (16), 8 states have call predecessors, (16), 13 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2023-04-01 22:56:37,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:56:37,694 INFO L93 Difference]: Finished difference Result 11898 states and 12530 transitions. [2023-04-01 22:56:37,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-04-01 22:56:37,694 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 38.34615384615385) internal successors, (997), 24 states have internal predecessors, (997), 10 states have call successors, (16), 8 states have call predecessors, (16), 13 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) Word has length 993 [2023-04-01 22:56:37,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:56:37,706 INFO L225 Difference]: With dead ends: 11898 [2023-04-01 22:56:37,706 INFO L226 Difference]: Without dead ends: 6526 [2023-04-01 22:56:37,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2139 GetRequests, 2036 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3578 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1603, Invalid=9317, Unknown=0, NotChecked=0, Total=10920 [2023-04-01 22:56:37,714 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 5602 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 6775 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5602 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 7225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 6775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:56:37,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5602 Valid, 357 Invalid, 7225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 6775 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-04-01 22:56:37,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6526 states. [2023-04-01 22:56:37,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6526 to 6302. [2023-04-01 22:56:37,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6302 states, 6177 states have (on average 1.0273595596567913) internal successors, (6346), 6230 states have internal predecessors, (6346), 36 states have call successors, (36), 36 states have call predecessors, (36), 88 states have return successors, (196), 35 states have call predecessors, (196), 35 states have call successors, (196) [2023-04-01 22:56:37,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6302 states to 6302 states and 6578 transitions. [2023-04-01 22:56:37,826 INFO L78 Accepts]: Start accepts. Automaton has 6302 states and 6578 transitions. Word has length 993 [2023-04-01 22:56:37,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:56:37,826 INFO L495 AbstractCegarLoop]: Abstraction has 6302 states and 6578 transitions. [2023-04-01 22:56:37,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 38.34615384615385) internal successors, (997), 24 states have internal predecessors, (997), 10 states have call successors, (16), 8 states have call predecessors, (16), 13 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2023-04-01 22:56:37,827 INFO L276 IsEmpty]: Start isEmpty. Operand 6302 states and 6578 transitions. [2023-04-01 22:56:37,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1705 [2023-04-01 22:56:37,846 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:56:37,847 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:56:37,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-04-01 22:56:38,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-04-01 22:56:38,053 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:56:38,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:56:38,054 INFO L85 PathProgramCache]: Analyzing trace with hash -2004564589, now seen corresponding path program 1 times [2023-04-01 22:56:38,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:56:38,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354832380] [2023-04-01 22:56:38,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:56:38,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:56:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:41,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:56:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:41,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:56:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:41,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-01 22:56:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:41,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-04-01 22:56:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:41,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2023-04-01 22:56:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:41,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2023-04-01 22:56:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:41,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2023-04-01 22:56:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:41,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2023-04-01 22:56:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:41,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2023-04-01 22:56:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:41,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2023-04-01 22:56:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:41,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2023-04-01 22:56:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:41,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2023-04-01 22:56:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:41,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1410 [2023-04-01 22:56:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:41,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1537 [2023-04-01 22:56:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:41,773 INFO L134 CoverageAnalysis]: Checked inductivity of 8880 backedges. 4436 proven. 79 refuted. 0 times theorem prover too weak. 4365 trivial. 0 not checked. [2023-04-01 22:56:41,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:56:41,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354832380] [2023-04-01 22:56:41,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354832380] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:56:41,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234575368] [2023-04-01 22:56:41,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:56:41,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:56:41,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:56:41,775 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:56:41,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-04-01 22:56:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:56:42,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 2308 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 22:56:42,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:57:01,091 WARN L223 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 43 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 22:57:03,123 WARN L861 $PredicateComparison]: unable to prove that (or (exists ((v_z_2 Int) (v_y_2 Int)) (let ((.cse0 (+ (* v_y_2 10) (* 9 v_z_2)))) (and (< .cse0 0) (<= (+ 17689 (* 9 v_y_2) (div (* 81 v_z_2) 10)) c_~a12~0) (<= 0 v_z_2) (<= |c_old(~a12~0)| .cse0) (< v_z_2 10)))) (exists ((v_~a12~0_638 Int)) (and (<= 0 v_~a12~0_638) (<= (+ 17688 (div (* 9 v_~a12~0_638) 10)) c_~a12~0) (<= |c_old(~a12~0)| v_~a12~0_638))) (<= (+ (* (div (+ (- 1) |c_old(~a12~0)|) 10) 9) 17697) c_~a12~0)) is different from true [2023-04-01 22:57:05,302 INFO L134 CoverageAnalysis]: Checked inductivity of 8880 backedges. 2902 proven. 66 refuted. 0 times theorem prover too weak. 5910 trivial. 2 not checked. [2023-04-01 22:57:05,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:57:07,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234575368] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:57:07,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 22:57:07,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2023-04-01 22:57:07,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096109375] [2023-04-01 22:57:07,924 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 22:57:07,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-01 22:57:07,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:57:07,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-01 22:57:07,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=367, Unknown=7, NotChecked=40, Total=506 [2023-04-01 22:57:07,926 INFO L87 Difference]: Start difference. First operand 6302 states and 6578 transitions. Second operand has 21 states, 20 states have (on average 30.5) internal successors, (610), 19 states have internal predecessors, (610), 9 states have call successors, (13), 7 states have call predecessors, (13), 10 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2023-04-01 22:57:12,142 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 22:57:14,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:57:16,195 WARN L539 Checker$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 22:57:18,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:57:20,253 WARN L539 Checker$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 22:57:22,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:57:24,300 WARN L539 Checker$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 22:57:26,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:57:28,347 WARN L539 Checker$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 22:57:30,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:57:32,372 WARN L539 Checker$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 22:57:34,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:57:36,412 WARN L539 Checker$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 22:57:38,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:57:40,456 WARN L539 Checker$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 22:57:42,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:57:44,515 WARN L539 Checker$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 22:57:46,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:57:48,557 WARN L539 Checker$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 22:57:50,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:57:52,594 WARN L539 Checker$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 22:57:54,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:57:56,659 WARN L539 Checker$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 22:57:58,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:58:00,689 WARN L539 Checker$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 22:58:02,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:58:04,738 WARN L539 Checker$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 22:58:06,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:58:08,810 WARN L539 Checker$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 22:58:10,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:58:12,847 WARN L539 Checker$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 22:58:14,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:58:16,955 WARN L539 Checker$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 22:58:18,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:58:20,990 WARN L539 Checker$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 22:58:23,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:58:25,017 WARN L539 Checker$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 22:58:27,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:58:29,041 WARN L539 Checker$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 22:58:31,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:58:33,090 WARN L539 Checker$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 22:58:35,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:58:37,130 WARN L539 Checker$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 22:58:39,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:58:41,164 WARN L539 Checker$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 22:58:43,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:58:45,213 WARN L539 Checker$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 22:58:47,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:58:49,262 WARN L539 Checker$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 22:58:51,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:58:53,312 WARN L539 Checker$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 22:58:55,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:58:57,353 WARN L539 Checker$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 22:58:59,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:59:01,520 WARN L539 Checker$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 22:59:03,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:59:05,563 WARN L539 Checker$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 22:59:07,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:59:09,645 WARN L539 Checker$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 22:59:11,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:59:13,673 WARN L539 Checker$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 22:59:15,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:59:17,730 WARN L539 Checker$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 22:59:19,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:59:21,854 WARN L539 Checker$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 22:59:23,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:59:25,879 WARN L539 Checker$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 22:59:27,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:59:30,036 WARN L539 Checker$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 22:59:32,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:59:34,102 WARN L539 Checker$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 22:59:36,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:59:38,308 WARN L539 Checker$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 22:59:40,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:59:42,329 WARN L539 Checker$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 22:59:44,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:59:46,406 WARN L539 Checker$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 22:59:48,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:59:50,479 WARN L539 Checker$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 22:59:52,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:59:54,527 WARN L539 Checker$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 22:59:56,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:59:58,557 WARN L539 Checker$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 23:00:00,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:00:02,581 WARN L539 Checker$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 23:00:04,603 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]