/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem13_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:40:17,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:40:17,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:40:17,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:40:17,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 22:40:17,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 22:40:17,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 22:40:17,933 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 22:40:17,972 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:40:17,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:40:17,973 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:40:17,973 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:40:17,974 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:40:17,974 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:40:17,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:40:17,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:40:17,975 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:40:17,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:40:17,976 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:40:17,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:40:17,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:40:17,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:40:17,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:40:17,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:40:17,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:40:17,977 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:40:17,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:40:17,977 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:40:17,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:40:17,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:40:17,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:40:17,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:40:17,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:40:17,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:40:17,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:40:17,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:40:17,978 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:40:17,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:40:17,979 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:40:17,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:40:17,979 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:40:17,979 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:40:17,979 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:40:17,979 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:40:18,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:40:18,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:40:18,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:40:18,264 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:40:18,265 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:40:18,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label19.c [2023-04-01 22:40:19,490 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:40:19,936 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:40:19,937 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label19.c [2023-04-01 22:40:19,968 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbcc3b283/37946db693fe46bd87248837a6887312/FLAG4ccf15a06 [2023-04-01 22:40:19,985 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbcc3b283/37946db693fe46bd87248837a6887312 [2023-04-01 22:40:19,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:40:19,990 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:40:19,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:40:19,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:40:19,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:40:19,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:40:19" (1/1) ... [2023-04-01 22:40:19,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ce2a321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:40:19, skipping insertion in model container [2023-04-01 22:40:19,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:40:19" (1/1) ... [2023-04-01 22:40:20,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:40:20,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:40:20,396 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label19.c[2731,2744] [2023-04-01 22:40:21,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:40:21,181 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:40:21,206 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label19.c[2731,2744] [2023-04-01 22:40:21,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:40:21,735 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:40:21,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:40:21 WrapperNode [2023-04-01 22:40:21,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:40:21,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:40:21,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:40:21,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:40:21,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:40:21" (1/1) ... [2023-04-01 22:40:21,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:40:21" (1/1) ... [2023-04-01 22:40:21,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:40:21" (1/1) ... [2023-04-01 22:40:21,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:40:21" (1/1) ... [2023-04-01 22:40:21,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:40:21" (1/1) ... [2023-04-01 22:40:21,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:40:21" (1/1) ... [2023-04-01 22:40:22,031 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:40:21" (1/1) ... [2023-04-01 22:40:22,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:40:21" (1/1) ... [2023-04-01 22:40:22,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:40:22,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:40:22,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:40:22,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:40:22,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:40:21" (1/1) ... [2023-04-01 22:40:22,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:40:22,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:40:22,114 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 22:40:22,229 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 22:40:22,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:40:22,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:40:22,240 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:40:22,241 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:40:22,241 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 22:40:22,241 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 22:40:22,241 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 22:40:22,241 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:40:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:40:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 22:40:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 22:40:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 22:40:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:40:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:40:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:40:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:40:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:40:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:40:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:40:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:40:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:40:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:40:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:40:22,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:40:22,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:40:22,335 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:40:22,337 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:40:27,366 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:40:27,384 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:40:27,384 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:40:27,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:40:27 BoogieIcfgContainer [2023-04-01 22:40:27,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:40:27,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:40:27,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:40:27,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:40:27,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:40:19" (1/3) ... [2023-04-01 22:40:27,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@115729fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:40:27, skipping insertion in model container [2023-04-01 22:40:27,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:40:21" (2/3) ... [2023-04-01 22:40:27,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@115729fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:40:27, skipping insertion in model container [2023-04-01 22:40:27,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:40:27" (3/3) ... [2023-04-01 22:40:27,400 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label19.c [2023-04-01 22:40:27,417 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:40:27,417 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:40:27,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:40:27,492 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;@30563cda, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:40:27,493 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:40:27,501 INFO L276 IsEmpty]: Start isEmpty. Operand has 1119 states, 1105 states have (on average 1.820814479638009) internal successors, (2012), 1106 states have internal predecessors, (2012), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 22:40:27,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-04-01 22:40:27,508 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:40:27,509 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] [2023-04-01 22:40:27,510 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:40:27,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:40:27,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1431573532, now seen corresponding path program 1 times [2023-04-01 22:40:27,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:40:27,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817034253] [2023-04-01 22:40:27,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:40:27,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:40:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:40:27,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:40:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:40:27,959 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 22:40:27,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:40:27,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817034253] [2023-04-01 22:40:27,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817034253] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:40:27,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:40:27,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 22:40:27,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668293907] [2023-04-01 22:40:27,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:40:27,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 22:40:27,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:40:27,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 22:40:27,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 22:40:27,993 INFO L87 Difference]: Start difference. First operand has 1119 states, 1105 states have (on average 1.820814479638009) internal successors, (2012), 1106 states have internal predecessors, (2012), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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 22:40:34,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:40:34,731 INFO L93 Difference]: Finished difference Result 3243 states and 5948 transitions. [2023-04-01 22:40:34,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 22:40:34,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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 23 [2023-04-01 22:40:34,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:40:34,754 INFO L225 Difference]: With dead ends: 3243 [2023-04-01 22:40:34,754 INFO L226 Difference]: Without dead ends: 2045 [2023-04-01 22:40:34,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:40:34,766 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 3047 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 4184 mSolverCounterSat, 994 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3047 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 5178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 994 IncrementalHoareTripleChecker+Valid, 4184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:40:34,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3047 Valid, 270 Invalid, 5178 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [994 Valid, 4184 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-04-01 22:40:34,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2023-04-01 22:40:34,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1988. [2023-04-01 22:40:34,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1988 states, 1960 states have (on average 1.7846938775510204) internal successors, (3498), 1962 states have internal predecessors, (3498), 10 states have call successors, (10), 10 states have call predecessors, (10), 17 states have return successors, (25), 15 states have call predecessors, (25), 9 states have call successors, (25) [2023-04-01 22:40:34,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 3533 transitions. [2023-04-01 22:40:34,896 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 3533 transitions. Word has length 23 [2023-04-01 22:40:34,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:40:34,898 INFO L495 AbstractCegarLoop]: Abstraction has 1988 states and 3533 transitions. [2023-04-01 22:40:34,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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 22:40:34,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 3533 transitions. [2023-04-01 22:40:34,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-04-01 22:40:34,905 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:40:34,905 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 22:40:34,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:40:34,906 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:40:34,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:40:34,907 INFO L85 PathProgramCache]: Analyzing trace with hash 657110405, now seen corresponding path program 1 times [2023-04-01 22:40:34,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:40:34,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921898909] [2023-04-01 22:40:34,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:40:34,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:40:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:40:35,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:40:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:40:35,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:40:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:40:35,362 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:40:35,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:40:35,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921898909] [2023-04-01 22:40:35,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921898909] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:40:35,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:40:35,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:40:35,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108087383] [2023-04-01 22:40:35,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:40:35,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:40:35,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:40:35,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:40:35,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:40:35,368 INFO L87 Difference]: Start difference. First operand 1988 states and 3533 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 5 states have internal predecessors, (86), 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 22:40:43,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:40:43,945 INFO L93 Difference]: Finished difference Result 7338 states and 13417 transitions. [2023-04-01 22:40:43,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:40:43,947 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 5 states have internal predecessors, (86), 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 92 [2023-04-01 22:40:43,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:40:43,976 INFO L225 Difference]: With dead ends: 7338 [2023-04-01 22:40:43,977 INFO L226 Difference]: Without dead ends: 5356 [2023-04-01 22:40:43,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:40:43,993 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 5285 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 7921 mSolverCounterSat, 2185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5285 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 10106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2185 IncrementalHoareTripleChecker+Valid, 7921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:40:43,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5285 Valid, 709 Invalid, 10106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2185 Valid, 7921 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2023-04-01 22:40:44,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5356 states. [2023-04-01 22:40:44,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5356 to 5331. [2023-04-01 22:40:44,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5331 states, 5228 states have (on average 1.5003825554705432) internal successors, (7844), 5242 states have internal predecessors, (7844), 26 states have call successors, (26), 26 states have call predecessors, (26), 76 states have return successors, (225), 62 states have call predecessors, (225), 25 states have call successors, (225) [2023-04-01 22:40:44,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5331 states to 5331 states and 8095 transitions. [2023-04-01 22:40:44,157 INFO L78 Accepts]: Start accepts. Automaton has 5331 states and 8095 transitions. Word has length 92 [2023-04-01 22:40:44,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:40:44,158 INFO L495 AbstractCegarLoop]: Abstraction has 5331 states and 8095 transitions. [2023-04-01 22:40:44,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 5 states have internal predecessors, (86), 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 22:40:44,158 INFO L276 IsEmpty]: Start isEmpty. Operand 5331 states and 8095 transitions. [2023-04-01 22:40:44,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-01 22:40:44,165 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:40:44,165 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 22:40:44,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 22:40:44,166 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:40:44,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:40:44,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1969489199, now seen corresponding path program 1 times [2023-04-01 22:40:44,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:40:44,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707231878] [2023-04-01 22:40:44,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:40:44,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:40:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:40:44,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:40:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:40:44,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:40:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:40:44,573 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:40:44,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:40:44,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707231878] [2023-04-01 22:40:44,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707231878] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:40:44,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:40:44,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:40:44,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274692576] [2023-04-01 22:40:44,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:40:44,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:40:44,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:40:44,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:40:44,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:40:44,577 INFO L87 Difference]: Start difference. First operand 5331 states and 8095 transitions. Second operand has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 4 states have internal predecessors, (92), 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 22:40:51,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:40:51,989 INFO L93 Difference]: Finished difference Result 16024 states and 25154 transitions. [2023-04-01 22:40:51,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 22:40:51,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 4 states have internal predecessors, (92), 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 98 [2023-04-01 22:40:51,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:40:52,039 INFO L225 Difference]: With dead ends: 16024 [2023-04-01 22:40:52,039 INFO L226 Difference]: Without dead ends: 10699 [2023-04-01 22:40:52,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:40:52,058 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 3156 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 8253 mSolverCounterSat, 1161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3156 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 9414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1161 IncrementalHoareTripleChecker+Valid, 8253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:40:52,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3156 Valid, 786 Invalid, 9414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1161 Valid, 8253 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-04-01 22:40:52,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10699 states. [2023-04-01 22:40:52,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10699 to 10504. [2023-04-01 22:40:52,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10504 states, 10232 states have (on average 1.3575058639562159) internal successors, (13890), 10286 states have internal predecessors, (13890), 50 states have call successors, (50), 50 states have call predecessors, (50), 221 states have return successors, (917), 167 states have call predecessors, (917), 49 states have call successors, (917) [2023-04-01 22:40:52,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10504 states to 10504 states and 14857 transitions. [2023-04-01 22:40:52,353 INFO L78 Accepts]: Start accepts. Automaton has 10504 states and 14857 transitions. Word has length 98 [2023-04-01 22:40:52,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:40:52,354 INFO L495 AbstractCegarLoop]: Abstraction has 10504 states and 14857 transitions. [2023-04-01 22:40:52,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 4 states have internal predecessors, (92), 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 22:40:52,354 INFO L276 IsEmpty]: Start isEmpty. Operand 10504 states and 14857 transitions. [2023-04-01 22:40:52,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-04-01 22:40:52,357 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:40:52,357 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:40:52,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 22:40:52,357 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:40:52,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:40:52,358 INFO L85 PathProgramCache]: Analyzing trace with hash -250644147, now seen corresponding path program 1 times [2023-04-01 22:40:52,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:40:52,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761471546] [2023-04-01 22:40:52,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:40:52,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:40:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:40:52,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:40:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:40:52,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:40:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:40:52,705 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:40:52,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:40:52,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761471546] [2023-04-01 22:40:52,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761471546] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:40:52,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:40:52,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:40:52,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507401438] [2023-04-01 22:40:52,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:40:52,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:40:52,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:40:52,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:40:52,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:40:52,708 INFO L87 Difference]: Start difference. First operand 10504 states and 14857 transitions. Second operand has 8 states, 7 states have (on average 17.428571428571427) internal successors, (122), 5 states have internal predecessors, (122), 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 22:41:01,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:41:01,534 INFO L93 Difference]: Finished difference Result 40087 states and 62005 transitions. [2023-04-01 22:41:01,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:41:01,535 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.428571428571427) internal successors, (122), 5 states have internal predecessors, (122), 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 128 [2023-04-01 22:41:01,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:41:01,678 INFO L225 Difference]: With dead ends: 40087 [2023-04-01 22:41:01,679 INFO L226 Difference]: Without dead ends: 29589 [2023-04-01 22:41:01,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:41:01,722 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 5710 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 9431 mSolverCounterSat, 2207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5710 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 11638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2207 IncrementalHoareTripleChecker+Valid, 9431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:41:01,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5710 Valid, 886 Invalid, 11638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2207 Valid, 9431 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2023-04-01 22:41:01,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29589 states. [2023-04-01 22:41:02,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29589 to 29507. [2023-04-01 22:41:02,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29507 states, 28552 states have (on average 1.261452787895769) internal successors, (36017), 28803 states have internal predecessors, (36017), 138 states have call successors, (138), 138 states have call predecessors, (138), 816 states have return successors, (6615), 565 states have call predecessors, (6615), 137 states have call successors, (6615) [2023-04-01 22:41:02,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29507 states to 29507 states and 42770 transitions. [2023-04-01 22:41:02,592 INFO L78 Accepts]: Start accepts. Automaton has 29507 states and 42770 transitions. Word has length 128 [2023-04-01 22:41:02,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:41:02,594 INFO L495 AbstractCegarLoop]: Abstraction has 29507 states and 42770 transitions. [2023-04-01 22:41:02,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.428571428571427) internal successors, (122), 5 states have internal predecessors, (122), 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 22:41:02,595 INFO L276 IsEmpty]: Start isEmpty. Operand 29507 states and 42770 transitions. [2023-04-01 22:41:02,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-04-01 22:41:02,598 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:41:02,598 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:41:02,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 22:41:02,598 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:41:02,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:41:02,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1367205885, now seen corresponding path program 1 times [2023-04-01 22:41:02,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:41:02,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222788208] [2023-04-01 22:41:02,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:41:02,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:41:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:02,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:41:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:02,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:41:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:02,848 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:41:02,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:41:02,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222788208] [2023-04-01 22:41:02,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222788208] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:41:02,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617016673] [2023-04-01 22:41:02,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:41:02,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:41:02,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:41:02,861 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 22:41:02,892 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 22:41:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:02,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 22:41:02,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:41:03,052 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:41:03,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:41:03,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617016673] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:41:03,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:41:03,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:41:03,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177785854] [2023-04-01 22:41:03,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:41:03,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:41:03,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:41:03,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:41:03,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:41:03,055 INFO L87 Difference]: Start difference. First operand 29507 states and 42770 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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 22:41:07,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:41:07,391 INFO L93 Difference]: Finished difference Result 80240 states and 119848 transitions. [2023-04-01 22:41:07,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:41:07,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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 143 [2023-04-01 22:41:07,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:41:07,628 INFO L225 Difference]: With dead ends: 80240 [2023-04-01 22:41:07,628 INFO L226 Difference]: Without dead ends: 50739 [2023-04-01 22:41:07,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:41:07,724 INFO L413 NwaCegarLoop]: 1608 mSDtfsCounter, 1009 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 2635 mSolverCounterSat, 760 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 760 IncrementalHoareTripleChecker+Valid, 2635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-04-01 22:41:07,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1009 Valid, 1748 Invalid, 3395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [760 Valid, 2635 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-04-01 22:41:07,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50739 states. [2023-04-01 22:41:08,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50739 to 47449. [2023-04-01 22:41:08,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47449 states, 46206 states have (on average 1.220231138813141) internal successors, (56382), 46511 states have internal predecessors, (56382), 226 states have call successors, (226), 226 states have call predecessors, (226), 1016 states have return successors, (10227), 711 states have call predecessors, (10227), 225 states have call successors, (10227) [2023-04-01 22:41:08,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47449 states to 47449 states and 66835 transitions. [2023-04-01 22:41:08,937 INFO L78 Accepts]: Start accepts. Automaton has 47449 states and 66835 transitions. Word has length 143 [2023-04-01 22:41:08,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:41:08,938 INFO L495 AbstractCegarLoop]: Abstraction has 47449 states and 66835 transitions. [2023-04-01 22:41:08,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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 22:41:08,938 INFO L276 IsEmpty]: Start isEmpty. Operand 47449 states and 66835 transitions. [2023-04-01 22:41:08,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-04-01 22:41:08,939 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:41:08,940 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:41:08,952 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 22:41:09,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:41:09,146 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:41:09,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:41:09,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1586060603, now seen corresponding path program 1 times [2023-04-01 22:41:09,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:41:09,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216429445] [2023-04-01 22:41:09,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:41:09,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:41:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:09,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:41:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:09,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:41:09,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:09,371 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:41:09,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:41:09,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216429445] [2023-04-01 22:41:09,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216429445] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:41:09,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242009025] [2023-04-01 22:41:09,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:41:09,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:41:09,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:41:09,373 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 22:41:09,376 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 22:41:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:09,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:41:09,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:41:09,722 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:41:09,723 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:41:09,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242009025] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:41:09,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:41:09,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:41:09,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846776085] [2023-04-01 22:41:09,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:41:09,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:41:09,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:41:09,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:41:09,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:41:09,725 INFO L87 Difference]: Start difference. First operand 47449 states and 66835 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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 22:41:12,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:41:12,893 INFO L93 Difference]: Finished difference Result 94893 states and 133795 transitions. [2023-04-01 22:41:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:41:12,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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 143 [2023-04-01 22:41:12,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:41:13,188 INFO L225 Difference]: With dead ends: 94893 [2023-04-01 22:41:13,188 INFO L226 Difference]: Without dead ends: 47450 [2023-04-01 22:41:13,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:41:13,245 INFO L413 NwaCegarLoop]: 1408 mSDtfsCounter, 1207 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 2457 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 2901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:41:13,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 1514 Invalid, 2901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2457 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-04-01 22:41:13,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47450 states. [2023-04-01 22:41:14,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47450 to 41818. [2023-04-01 22:41:14,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41818 states, 40635 states have (on average 1.1735449735449734) internal successors, (47687), 40938 states have internal predecessors, (47687), 198 states have call successors, (198), 198 states have call predecessors, (198), 984 states have return successors, (7258), 681 states have call predecessors, (7258), 197 states have call successors, (7258) [2023-04-01 22:41:14,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41818 states to 41818 states and 55143 transitions. [2023-04-01 22:41:14,168 INFO L78 Accepts]: Start accepts. Automaton has 41818 states and 55143 transitions. Word has length 143 [2023-04-01 22:41:14,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:41:14,169 INFO L495 AbstractCegarLoop]: Abstraction has 41818 states and 55143 transitions. [2023-04-01 22:41:14,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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 22:41:14,169 INFO L276 IsEmpty]: Start isEmpty. Operand 41818 states and 55143 transitions. [2023-04-01 22:41:14,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-04-01 22:41:14,171 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:41:14,171 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:41:14,179 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 22:41:14,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-01 22:41:14,377 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:41:14,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:41:14,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1148880700, now seen corresponding path program 1 times [2023-04-01 22:41:14,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:41:14,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975384917] [2023-04-01 22:41:14,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:41:14,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:41:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:14,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:41:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:14,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:41:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:14,571 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:41:14,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:41:14,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975384917] [2023-04-01 22:41:14,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975384917] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:41:14,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178353187] [2023-04-01 22:41:14,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:41:14,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:41:14,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:41:14,573 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 22:41:14,576 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 22:41:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:14,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 22:41:14,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:41:14,716 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:41:14,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:41:14,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178353187] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:41:14,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:41:14,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 22:41:14,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900542488] [2023-04-01 22:41:14,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:41:14,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:41:14,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:41:14,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:41:14,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:41:14,718 INFO L87 Difference]: Start difference. First operand 41818 states and 55143 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 22:41:18,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:41:18,942 INFO L93 Difference]: Finished difference Result 113779 states and 155117 transitions. [2023-04-01 22:41:18,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:41:18,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 152 [2023-04-01 22:41:18,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:41:19,157 INFO L225 Difference]: With dead ends: 113779 [2023-04-01 22:41:19,157 INFO L226 Difference]: Without dead ends: 71967 [2023-04-01 22:41:19,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:41:19,239 INFO L413 NwaCegarLoop]: 1856 mSDtfsCounter, 925 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2474 mSolverCounterSat, 800 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 2008 SdHoareTripleChecker+Invalid, 3274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 800 IncrementalHoareTripleChecker+Valid, 2474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:41:19,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 2008 Invalid, 3274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [800 Valid, 2474 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-04-01 22:41:19,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71967 states. [2023-04-01 22:41:20,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71967 to 67922. [2023-04-01 22:41:20,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67922 states, 66317 states have (on average 1.1444124432649245) internal successors, (75894), 66694 states have internal predecessors, (75894), 326 states have call successors, (326), 326 states have call predecessors, (326), 1278 states have return successors, (12307), 901 states have call predecessors, (12307), 325 states have call successors, (12307) [2023-04-01 22:41:21,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67922 states to 67922 states and 88527 transitions. [2023-04-01 22:41:21,137 INFO L78 Accepts]: Start accepts. Automaton has 67922 states and 88527 transitions. Word has length 152 [2023-04-01 22:41:21,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:41:21,137 INFO L495 AbstractCegarLoop]: Abstraction has 67922 states and 88527 transitions. [2023-04-01 22:41:21,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 22:41:21,137 INFO L276 IsEmpty]: Start isEmpty. Operand 67922 states and 88527 transitions. [2023-04-01 22:41:21,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-04-01 22:41:21,143 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:41:21,143 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:41:21,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-01 22:41:21,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:41:21,349 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:41:21,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:41:21,349 INFO L85 PathProgramCache]: Analyzing trace with hash -712390339, now seen corresponding path program 1 times [2023-04-01 22:41:21,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:41:21,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272087406] [2023-04-01 22:41:21,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:41:21,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:41:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:21,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:41:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:21,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:41:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:21,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-01 22:41:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:21,911 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:41:21,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:41:21,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272087406] [2023-04-01 22:41:21,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272087406] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:41:21,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710329205] [2023-04-01 22:41:21,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:41:21,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:41:21,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:41:21,913 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 22:41:21,916 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 22:41:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:22,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:41:22,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:41:22,272 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:41:22,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:41:22,662 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:41:22,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710329205] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:41:22,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:41:22,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:41:22,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911167565] [2023-04-01 22:41:22,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:41:22,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:41:22,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:41:22,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:41:22,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:41:22,665 INFO L87 Difference]: Start difference. First operand 67922 states and 88527 transitions. Second operand has 11 states, 11 states have (on average 45.0) internal successors, (495), 9 states have internal predecessors, (495), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:41:31,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:41:31,880 INFO L93 Difference]: Finished difference Result 136968 states and 185586 transitions. [2023-04-01 22:41:31,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-04-01 22:41:31,881 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 45.0) internal successors, (495), 9 states have internal predecessors, (495), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 264 [2023-04-01 22:41:31,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:41:32,142 INFO L225 Difference]: With dead ends: 136968 [2023-04-01 22:41:32,143 INFO L226 Difference]: Without dead ends: 69855 [2023-04-01 22:41:32,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 536 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=933, Unknown=0, NotChecked=0, Total=1190 [2023-04-01 22:41:32,367 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 13294 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 8660 mSolverCounterSat, 2101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13294 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 10761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2101 IncrementalHoareTripleChecker+Valid, 8660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:41:32,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13294 Valid, 910 Invalid, 10761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2101 Valid, 8660 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-04-01 22:41:32,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69855 states. [2023-04-01 22:41:33,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69855 to 69422. [2023-04-01 22:41:33,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69422 states, 67528 states have (on average 1.0817734865537258) internal successors, (73050), 68039 states have internal predecessors, (73050), 330 states have call successors, (330), 330 states have call predecessors, (330), 1563 states have return successors, (8020), 1052 states have call predecessors, (8020), 329 states have call successors, (8020) [2023-04-01 22:41:33,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69422 states to 69422 states and 81400 transitions. [2023-04-01 22:41:33,743 INFO L78 Accepts]: Start accepts. Automaton has 69422 states and 81400 transitions. Word has length 264 [2023-04-01 22:41:33,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:41:33,743 INFO L495 AbstractCegarLoop]: Abstraction has 69422 states and 81400 transitions. [2023-04-01 22:41:33,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 45.0) internal successors, (495), 9 states have internal predecessors, (495), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:41:33,744 INFO L276 IsEmpty]: Start isEmpty. Operand 69422 states and 81400 transitions. [2023-04-01 22:41:33,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-04-01 22:41:33,751 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:41:33,751 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:33,761 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 22:41:33,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:41:33,957 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:41:33,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:41:33,957 INFO L85 PathProgramCache]: Analyzing trace with hash 2016906697, now seen corresponding path program 1 times [2023-04-01 22:41:33,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:41:33,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746918086] [2023-04-01 22:41:33,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:41:33,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:41:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:34,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:41:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:34,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:41:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:34,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 22:41:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:34,596 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:41:34,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:41:34,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746918086] [2023-04-01 22:41:34,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746918086] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:41:34,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450175491] [2023-04-01 22:41:34,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:41:34,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:41:34,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:41:34,598 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 22:41:34,600 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 22:41:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:34,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:41:34,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:41:35,045 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:41:35,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:41:35,600 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:41:35,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450175491] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:41:35,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:41:35,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 22:41:35,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226139664] [2023-04-01 22:41:35,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:41:35,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 22:41:35,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:41:35,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 22:41:35,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:41:35,604 INFO L87 Difference]: Start difference. First operand 69422 states and 81400 transitions. Second operand has 12 states, 12 states have (on average 54.083333333333336) internal successors, (649), 10 states have internal predecessors, (649), 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 22:41:47,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:41:47,432 INFO L93 Difference]: Finished difference Result 182477 states and 218403 transitions. [2023-04-01 22:41:47,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 22:41:47,433 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 54.083333333333336) internal successors, (649), 10 states have internal predecessors, (649), 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 296 [2023-04-01 22:41:47,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:41:47,725 INFO L225 Difference]: With dead ends: 182477 [2023-04-01 22:41:47,725 INFO L226 Difference]: Without dead ends: 110546 [2023-04-01 22:41:47,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 596 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2023-04-01 22:41:47,796 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 8002 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 13814 mSolverCounterSat, 3233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8002 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 17047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3233 IncrementalHoareTripleChecker+Valid, 13814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:41:47,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8002 Valid, 1097 Invalid, 17047 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3233 Valid, 13814 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2023-04-01 22:41:47,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110546 states. [2023-04-01 22:41:49,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110546 to 103208. [2023-04-01 22:41:49,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103208 states, 100638 states have (on average 1.06470716826646) internal successors, (107150), 101321 states have internal predecessors, (107150), 494 states have call successors, (494), 494 states have call predecessors, (494), 2075 states have return successors, (11946), 1392 states have call predecessors, (11946), 493 states have call successors, (11946) [2023-04-01 22:41:49,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103208 states to 103208 states and 119590 transitions. [2023-04-01 22:41:49,812 INFO L78 Accepts]: Start accepts. Automaton has 103208 states and 119590 transitions. Word has length 296 [2023-04-01 22:41:49,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:41:49,812 INFO L495 AbstractCegarLoop]: Abstraction has 103208 states and 119590 transitions. [2023-04-01 22:41:49,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 54.083333333333336) internal successors, (649), 10 states have internal predecessors, (649), 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 22:41:49,813 INFO L276 IsEmpty]: Start isEmpty. Operand 103208 states and 119590 transitions. [2023-04-01 22:41:49,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2023-04-01 22:41:49,824 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:41:49,825 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 22:41:49,833 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 22:41:50,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:41:50,032 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:41:50,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:41:50,032 INFO L85 PathProgramCache]: Analyzing trace with hash 334710117, now seen corresponding path program 1 times [2023-04-01 22:41:50,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:41:50,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806071214] [2023-04-01 22:41:50,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:41:50,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:41:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:50,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:41:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:50,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:41:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:50,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 22:41:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:50,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 22:41:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:50,900 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 142 proven. 116 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-04-01 22:41:50,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:41:50,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806071214] [2023-04-01 22:41:50,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806071214] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:41:50,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597650266] [2023-04-01 22:41:50,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:41:50,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:41:50,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:41:50,902 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 22:41:50,905 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 22:41:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:51,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 22:41:51,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:41:51,474 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-04-01 22:41:51,475 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:41:51,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597650266] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:41:51,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:41:51,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-04-01 22:41:51,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760857678] [2023-04-01 22:41:51,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:41:51,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:41:51,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:41:51,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:41:51,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-04-01 22:41:51,479 INFO L87 Difference]: Start difference. First operand 103208 states and 119590 transitions. Second operand has 5 states, 5 states have (on average 46.2) internal successors, (231), 4 states have internal predecessors, (231), 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 22:41:57,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:41:57,076 INFO L93 Difference]: Finished difference Result 214051 states and 248309 transitions. [2023-04-01 22:41:57,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 22:41:57,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.2) internal successors, (231), 4 states have internal predecessors, (231), 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 370 [2023-04-01 22:41:57,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:41:57,333 INFO L225 Difference]: With dead ends: 214051 [2023-04-01 22:41:57,333 INFO L226 Difference]: Without dead ends: 111652 [2023-04-01 22:41:57,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-04-01 22:41:57,477 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 2623 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 5130 mSolverCounterSat, 849 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2623 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 5979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 849 IncrementalHoareTripleChecker+Valid, 5130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:41:57,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2623 Valid, 541 Invalid, 5979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [849 Valid, 5130 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-04-01 22:41:57,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111652 states. [2023-04-01 22:41:58,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111652 to 109906. [2023-04-01 22:41:58,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109906 states, 107162 states have (on average 1.0623635243836436) internal successors, (113845), 107906 states have internal predecessors, (113845), 526 states have call successors, (526), 526 states have call predecessors, (526), 2217 states have return successors, (12966), 1473 states have call predecessors, (12966), 525 states have call successors, (12966) [2023-04-01 22:41:59,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109906 states to 109906 states and 127337 transitions. [2023-04-01 22:41:59,282 INFO L78 Accepts]: Start accepts. Automaton has 109906 states and 127337 transitions. Word has length 370 [2023-04-01 22:41:59,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:41:59,282 INFO L495 AbstractCegarLoop]: Abstraction has 109906 states and 127337 transitions. [2023-04-01 22:41:59,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.2) internal successors, (231), 4 states have internal predecessors, (231), 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 22:41:59,282 INFO L276 IsEmpty]: Start isEmpty. Operand 109906 states and 127337 transitions. [2023-04-01 22:41:59,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2023-04-01 22:41:59,295 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:41:59,295 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:41:59,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 22:41:59,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:41:59,500 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:41:59,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:41:59,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1216951560, now seen corresponding path program 1 times [2023-04-01 22:41:59,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:41:59,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348778174] [2023-04-01 22:41:59,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:41:59,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:41:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:59,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:41:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:59,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:42:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:00,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-04-01 22:42:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:00,137 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2023-04-01 22:42:00,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:42:00,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348778174] [2023-04-01 22:42:00,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348778174] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:42:00,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435932929] [2023-04-01 22:42:00,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:00,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:42:00,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:42:00,139 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 22:42:00,166 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 22:42:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:00,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:42:00,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:42:00,367 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2023-04-01 22:42:00,368 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:42:00,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435932929] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:42:00,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:42:00,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:42:00,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812771969] [2023-04-01 22:42:00,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:42:00,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:42:00,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:42:00,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:42:00,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:42:00,370 INFO L87 Difference]: Start difference. First operand 109906 states and 127337 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 22:42:04,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:42:04,277 INFO L93 Difference]: Finished difference Result 222180 states and 257533 transitions. [2023-04-01 22:42:04,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:42:04,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 373 [2023-04-01 22:42:04,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:42:04,636 INFO L225 Difference]: With dead ends: 222180 [2023-04-01 22:42:04,636 INFO L226 Difference]: Without dead ends: 113082 [2023-04-01 22:42:04,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 379 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 22:42:04,857 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 929 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 530 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 530 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:42:04,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 1671 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [530 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-04-01 22:42:04,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113082 states. [2023-04-01 22:42:06,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113082 to 110645. [2023-04-01 22:42:06,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110645 states, 107915 states have (on average 1.045359773896122) internal successors, (112810), 108650 states have internal predecessors, (112810), 530 states have call successors, (530), 530 states have call predecessors, (530), 2199 states have return successors, (9843), 1464 states have call predecessors, (9843), 529 states have call successors, (9843) [2023-04-01 22:42:06,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110645 states to 110645 states and 123183 transitions. [2023-04-01 22:42:06,614 INFO L78 Accepts]: Start accepts. Automaton has 110645 states and 123183 transitions. Word has length 373 [2023-04-01 22:42:06,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:42:06,614 INFO L495 AbstractCegarLoop]: Abstraction has 110645 states and 123183 transitions. [2023-04-01 22:42:06,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 22:42:06,614 INFO L276 IsEmpty]: Start isEmpty. Operand 110645 states and 123183 transitions. [2023-04-01 22:42:06,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2023-04-01 22:42:06,623 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:42:06,623 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-01 22:42:06,628 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 22:42:06,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:42:06,824 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:42:06,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:42:06,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1640262729, now seen corresponding path program 1 times [2023-04-01 22:42:06,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:42:06,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204183256] [2023-04-01 22:42:06,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:06,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:42:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:07,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:42:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:07,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:42:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:07,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-01 22:42:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:07,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-04-01 22:42:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:07,485 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 149 proven. 116 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-04-01 22:42:07,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:42:07,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204183256] [2023-04-01 22:42:07,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204183256] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:42:07,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518615897] [2023-04-01 22:42:07,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:07,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:42:07,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:42:07,487 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 22:42:07,490 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 22:42:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:07,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:42:07,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:42:07,869 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 346 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-04-01 22:42:07,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:42:08,279 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 150 proven. 117 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-04-01 22:42:08,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518615897] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:42:08,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:42:08,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:42:08,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821043687] [2023-04-01 22:42:08,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:42:08,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:42:08,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:42:08,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:42:08,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:42:08,282 INFO L87 Difference]: Start difference. First operand 110645 states and 123183 transitions. Second operand has 11 states, 11 states have (on average 57.90909090909091) internal successors, (637), 9 states have internal predecessors, (637), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 22:42:16,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:42:16,406 INFO L93 Difference]: Finished difference Result 225707 states and 250926 transitions. [2023-04-01 22:42:16,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-01 22:42:16,407 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 57.90909090909091) internal successors, (637), 9 states have internal predecessors, (637), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 377 [2023-04-01 22:42:16,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:42:16,687 INFO L225 Difference]: With dead ends: 225707 [2023-04-01 22:42:16,687 INFO L226 Difference]: Without dead ends: 112557 [2023-04-01 22:42:16,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 770 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=475, Unknown=0, NotChecked=0, Total=650 [2023-04-01 22:42:16,791 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 7193 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 9023 mSolverCounterSat, 1587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7193 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 10610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1587 IncrementalHoareTripleChecker+Valid, 9023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:42:16,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7193 Valid, 977 Invalid, 10610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1587 Valid, 9023 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-04-01 22:42:16,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112557 states. [2023-04-01 22:42:18,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112557 to 110006. [2023-04-01 22:42:18,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110006 states, 107215 states have (on average 1.0361516578836916) internal successors, (111091), 107992 states have internal predecessors, (111091), 526 states have call successors, (526), 526 states have call predecessors, (526), 2264 states have return successors, (7998), 1487 states have call predecessors, (7998), 525 states have call successors, (7998) [2023-04-01 22:42:18,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110006 states to 110006 states and 119615 transitions. [2023-04-01 22:42:18,594 INFO L78 Accepts]: Start accepts. Automaton has 110006 states and 119615 transitions. Word has length 377 [2023-04-01 22:42:18,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:42:18,595 INFO L495 AbstractCegarLoop]: Abstraction has 110006 states and 119615 transitions. [2023-04-01 22:42:18,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 57.90909090909091) internal successors, (637), 9 states have internal predecessors, (637), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 22:42:18,595 INFO L276 IsEmpty]: Start isEmpty. Operand 110006 states and 119615 transitions. [2023-04-01 22:42:18,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-04-01 22:42:18,605 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:42:18,605 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:18,615 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 22:42:18,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-01 22:42:18,811 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:42:18,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:42:18,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1405479349, now seen corresponding path program 1 times [2023-04-01 22:42:18,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:42:18,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581702774] [2023-04-01 22:42:18,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:18,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:42:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:19,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:42:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:19,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:42:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:19,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-04-01 22:42:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:19,548 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:42:19,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:42:19,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581702774] [2023-04-01 22:42:19,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581702774] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:42:19,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933690290] [2023-04-01 22:42:19,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:19,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:42:19,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:42:19,550 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 22:42:19,553 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 22:42:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:19,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:42:19,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:42:19,950 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:42:19,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:42:20,294 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:42:20,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933690290] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:42:20,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:42:20,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:42:20,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225225525] [2023-04-01 22:42:20,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:42:20,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:42:20,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:42:20,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:42:20,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:42:20,298 INFO L87 Difference]: Start difference. First operand 110006 states and 119615 transitions. Second operand has 11 states, 11 states have (on average 57.45454545454545) internal successors, (632), 9 states have internal predecessors, (632), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:42:29,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:42:29,826 INFO L93 Difference]: Finished difference Result 223558 states and 248267 transitions. [2023-04-01 22:42:29,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 22:42:29,827 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 57.45454545454545) internal successors, (632), 9 states have internal predecessors, (632), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 408 [2023-04-01 22:42:29,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:42:30,219 INFO L225 Difference]: With dead ends: 223558 [2023-04-01 22:42:30,219 INFO L226 Difference]: Without dead ends: 114377 [2023-04-01 22:42:30,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 842 GetRequests, 821 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 22:42:30,304 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 4122 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 14495 mSolverCounterSat, 1115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4124 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 15610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1115 IncrementalHoareTripleChecker+Valid, 14495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-04-01 22:42:30,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4124 Valid, 1039 Invalid, 15610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1115 Valid, 14495 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-04-01 22:42:30,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114377 states. [2023-04-01 22:42:32,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114377 to 113426. [2023-04-01 22:42:32,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113426 states, 110520 states have (on average 1.0316775244299674) internal successors, (114021), 111344 states have internal predecessors, (114021), 542 states have call successors, (542), 542 states have call predecessors, (542), 2363 states have return successors, (7192), 1539 states have call predecessors, (7192), 541 states have call successors, (7192) [2023-04-01 22:42:32,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113426 states to 113426 states and 121755 transitions. [2023-04-01 22:42:32,581 INFO L78 Accepts]: Start accepts. Automaton has 113426 states and 121755 transitions. Word has length 408 [2023-04-01 22:42:32,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:42:32,582 INFO L495 AbstractCegarLoop]: Abstraction has 113426 states and 121755 transitions. [2023-04-01 22:42:32,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 57.45454545454545) internal successors, (632), 9 states have internal predecessors, (632), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:42:32,583 INFO L276 IsEmpty]: Start isEmpty. Operand 113426 states and 121755 transitions. [2023-04-01 22:42:32,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2023-04-01 22:42:32,596 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:42:32,596 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:42:32,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-04-01 22:42:32,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 22:42:32,804 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:42:32,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:42:32,805 INFO L85 PathProgramCache]: Analyzing trace with hash 400752414, now seen corresponding path program 1 times [2023-04-01 22:42:32,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:42:32,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297614806] [2023-04-01 22:42:32,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:32,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:42:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:33,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:42:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:33,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:42:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:34,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-01 22:42:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:34,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-04-01 22:42:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:34,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-04-01 22:42:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:34,709 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 73 proven. 456 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-04-01 22:42:34,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:42:34,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297614806] [2023-04-01 22:42:34,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297614806] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:42:34,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882729119] [2023-04-01 22:42:34,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:34,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:42:34,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:42:34,711 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 22:42:34,714 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 22:42:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:34,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 22:42:34,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:42:35,085 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 313 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2023-04-01 22:42:35,085 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:42:35,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882729119] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:42:35,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:42:35,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-04-01 22:42:35,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127061468] [2023-04-01 22:42:35,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:42:35,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:42:35,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:42:35,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:42:35,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-04-01 22:42:35,088 INFO L87 Difference]: Start difference. First operand 113426 states and 121755 transitions. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 4 states have internal predecessors, (241), 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 22:42:40,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:42:40,320 INFO L93 Difference]: Finished difference Result 239118 states and 256874 transitions. [2023-04-01 22:42:40,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:42:40,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 4 states have internal predecessors, (241), 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 445 [2023-04-01 22:42:40,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:42:40,598 INFO L225 Difference]: With dead ends: 239118 [2023-04-01 22:42:40,598 INFO L226 Difference]: Without dead ends: 127338 [2023-04-01 22:42:40,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:42:40,679 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 2752 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 5109 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2752 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 5735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 5109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:42:40,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2752 Valid, 522 Invalid, 5735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 5109 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-04-01 22:42:40,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127338 states. [2023-04-01 22:42:42,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127338 to 124854. [2023-04-01 22:42:42,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124854 states, 121764 states have (on average 1.0302798856804967) internal successors, (125451), 122625 states have internal predecessors, (125451), 598 states have call successors, (598), 598 states have call predecessors, (598), 2491 states have return successors, (7696), 1630 states have call predecessors, (7696), 597 states have call successors, (7696) [2023-04-01 22:42:42,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124854 states to 124854 states and 133745 transitions. [2023-04-01 22:42:42,586 INFO L78 Accepts]: Start accepts. Automaton has 124854 states and 133745 transitions. Word has length 445 [2023-04-01 22:42:42,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:42:42,586 INFO L495 AbstractCegarLoop]: Abstraction has 124854 states and 133745 transitions. [2023-04-01 22:42:42,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 4 states have internal predecessors, (241), 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 22:42:42,587 INFO L276 IsEmpty]: Start isEmpty. Operand 124854 states and 133745 transitions. [2023-04-01 22:42:42,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2023-04-01 22:42:42,596 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:42:42,597 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-04-01 22:42:42,602 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 22:42:42,802 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,SelfDestructingSolverStorable13 [2023-04-01 22:42:42,803 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:42:42,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:42:42,803 INFO L85 PathProgramCache]: Analyzing trace with hash 852486370, now seen corresponding path program 1 times [2023-04-01 22:42:42,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:42:42,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867276651] [2023-04-01 22:42:42,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:42,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:42:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:43,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:42:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:43,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:42:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:43,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-01 22:42:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:43,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2023-04-01 22:42:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:43,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-04-01 22:42:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:43,619 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 375 proven. 2 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2023-04-01 22:42:43,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:42:43,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867276651] [2023-04-01 22:42:43,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867276651] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:42:43,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492068312] [2023-04-01 22:42:43,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:43,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:42:43,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:42:43,621 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 22:42:43,646 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 22:42:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:43,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-01 22:42:43,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:42:44,346 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 507 proven. 2 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-04-01 22:42:44,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:42:45,984 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 73 proven. 462 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-04-01 22:42:45,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492068312] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:42:45,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:42:45,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-04-01 22:42:45,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391894802] [2023-04-01 22:42:45,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:42:45,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-01 22:42:45,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:42:45,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-01 22:42:45,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2023-04-01 22:42:45,987 INFO L87 Difference]: Start difference. First operand 124854 states and 133745 transitions. Second operand has 19 states, 19 states have (on average 41.10526315789474) internal successors, (781), 17 states have internal predecessors, (781), 7 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-04-01 22:43:28,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:43:28,018 INFO L93 Difference]: Finished difference Result 407879 states and 443404 transitions. [2023-04-01 22:43:28,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2023-04-01 22:43:28,018 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 41.10526315789474) internal successors, (781), 17 states have internal predecessors, (781), 7 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 470 [2023-04-01 22:43:28,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:43:28,853 INFO L225 Difference]: With dead ends: 407879 [2023-04-01 22:43:28,853 INFO L226 Difference]: Without dead ends: 280533 [2023-04-01 22:43:28,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1245 GetRequests, 1078 SyntacticMatches, 1 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11441 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3732, Invalid=24324, Unknown=0, NotChecked=0, Total=28056 [2023-04-01 22:43:28,966 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 18004 mSDsluCounter, 3146 mSDsCounter, 0 mSdLazyCounter, 47968 mSolverCounterSat, 9966 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18010 SdHoareTripleChecker+Valid, 3543 SdHoareTripleChecker+Invalid, 57934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 9966 IncrementalHoareTripleChecker+Valid, 47968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:43:28,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18010 Valid, 3543 Invalid, 57934 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [9966 Valid, 47968 Invalid, 0 Unknown, 0 Unchecked, 35.0s Time] [2023-04-01 22:43:29,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280533 states. [2023-04-01 22:43:32,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280533 to 252570. [2023-04-01 22:43:32,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252570 states, 246766 states have (on average 1.0290963909128485) internal successors, (253946), 248325 states have internal predecessors, (253946), 1214 states have call successors, (1214), 1214 states have call predecessors, (1214), 4589 states have return successors, (15874), 3030 states have call predecessors, (15874), 1213 states have call successors, (15874) [2023-04-01 22:43:33,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252570 states to 252570 states and 271034 transitions. [2023-04-01 22:43:33,516 INFO L78 Accepts]: Start accepts. Automaton has 252570 states and 271034 transitions. Word has length 470 [2023-04-01 22:43:33,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:43:33,517 INFO L495 AbstractCegarLoop]: Abstraction has 252570 states and 271034 transitions. [2023-04-01 22:43:33,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 41.10526315789474) internal successors, (781), 17 states have internal predecessors, (781), 7 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-04-01 22:43:33,517 INFO L276 IsEmpty]: Start isEmpty. Operand 252570 states and 271034 transitions. [2023-04-01 22:43:33,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2023-04-01 22:43:33,531 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:43:33,531 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2023-04-01 22:43:33,537 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 22:43:33,733 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,SelfDestructingSolverStorable14 [2023-04-01 22:43:33,734 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:43:33,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:43:33,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1149363198, now seen corresponding path program 1 times [2023-04-01 22:43:33,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:43:33,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240031119] [2023-04-01 22:43:33,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:43:33,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:43:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:34,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:43:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:34,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:43:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:34,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-04-01 22:43:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:34,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-04-01 22:43:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:35,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2023-04-01 22:43:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:35,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2023-04-01 22:43:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:35,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1070 backedges. 207 proven. 572 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-04-01 22:43:35,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:43:35,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240031119] [2023-04-01 22:43:35,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240031119] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:43:35,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158224498] [2023-04-01 22:43:35,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:43:35,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:43:35,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:43:35,084 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 22:43:35,085 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 22:43:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:35,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 953 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-01 22:43:35,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:43:37,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1070 backedges. 745 proven. 2 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2023-04-01 22:43:37,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:43:39,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1070 backedges. 93 proven. 693 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-04-01 22:43:39,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158224498] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:43:39,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:43:39,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2023-04-01 22:43:39,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772984945] [2023-04-01 22:43:39,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:43:39,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-04-01 22:43:39,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:43:39,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-04-01 22:43:39,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2023-04-01 22:43:39,921 INFO L87 Difference]: Start difference. First operand 252570 states and 271034 transitions. Second operand has 25 states, 25 states have (on average 39.16) internal successors, (979), 23 states have internal predecessors, (979), 8 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11)