/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/Problem18_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 23:40:07,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 23:40:07,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 23:40:07,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 23:40:07,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 23:40:07,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 23:40:07,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 23:40:07,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 23:40:07,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 23:40:07,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 23:40:07,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 23:40:07,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 23:40:07,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 23:40:07,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 23:40:07,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 23:40:07,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 23:40:07,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 23:40:07,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 23:40:07,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 23:40:07,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 23:40:07,337 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 23:40:07,356 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 23:40:07,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 23:40:07,357 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 23:40:07,357 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 23:40:07,357 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 23:40:07,358 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 23:40:07,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 23:40:07,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 23:40:07,358 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 23:40:07,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 23:40:07,358 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 23:40:07,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 23:40:07,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 23:40:07,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 23:40:07,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 23:40:07,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 23:40:07,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 23:40:07,359 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 23:40:07,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 23:40:07,359 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 23:40:07,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 23:40:07,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 23:40:07,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 23:40:07,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 23:40:07,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:40:07,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 23:40:07,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 23:40:07,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 23:40:07,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 23:40:07,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 23:40:07,361 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 23:40:07,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 23:40:07,361 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 23:40:07,361 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 23:40:07,361 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 23:40:07,361 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 23:40:07,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 23:40:07,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 23:40:07,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 23:40:07,623 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 23:40:07,624 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 23:40:07,625 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem18_label15.c [2023-04-01 23:40:08,803 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 23:40:09,210 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 23:40:09,210 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label15.c [2023-04-01 23:40:09,233 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cab60abc/55c5e1a4532749ac9fed487fbb8ab701/FLAGb07382571 [2023-04-01 23:40:09,248 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cab60abc/55c5e1a4532749ac9fed487fbb8ab701 [2023-04-01 23:40:09,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 23:40:09,252 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 23:40:09,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 23:40:09,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 23:40:09,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 23:40:09,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:40:09" (1/1) ... [2023-04-01 23:40:09,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41080351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:40:09, skipping insertion in model container [2023-04-01 23:40:09,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:40:09" (1/1) ... [2023-04-01 23:40:09,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 23:40:09,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 23:40:09,611 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/Problem18_label15.c[3868,3881] [2023-04-01 23:40:10,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:40:10,209 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 23:40:10,234 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/Problem18_label15.c[3868,3881] [2023-04-01 23:40:10,480 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:40:10,499 INFO L208 MainTranslator]: Completed translation [2023-04-01 23:40:10,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:40:10 WrapperNode [2023-04-01 23:40:10,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 23:40:10,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 23:40:10,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 23:40:10,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 23:40:10,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:40:10" (1/1) ... [2023-04-01 23:40:10,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:40:10" (1/1) ... [2023-04-01 23:40:10,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:40:10" (1/1) ... [2023-04-01 23:40:10,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:40:10" (1/1) ... [2023-04-01 23:40:10,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:40:10" (1/1) ... [2023-04-01 23:40:10,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:40:10" (1/1) ... [2023-04-01 23:40:10,695 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:40:10" (1/1) ... [2023-04-01 23:40:10,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:40:10" (1/1) ... [2023-04-01 23:40:10,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 23:40:10,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 23:40:10,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 23:40:10,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 23:40:10,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:40:10" (1/1) ... [2023-04-01 23:40:10,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:40:10,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:10,766 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 23:40:10,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 23:40:10,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 23:40:10,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 23:40:10,801 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 23:40:10,801 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 23:40:10,802 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 23:40:10,802 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 23:40:10,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 23:40:10,802 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 23:40:10,802 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 23:40:10,802 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 23:40:10,802 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 23:40:10,802 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 23:40:10,802 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 23:40:10,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 23:40:10,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 23:40:10,803 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 23:40:10,803 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 23:40:10,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 23:40:10,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 23:40:10,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 23:40:10,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 23:40:10,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 23:40:10,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 23:40:10,874 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 23:40:10,876 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 23:40:13,653 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 23:40:13,672 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 23:40:13,673 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 23:40:13,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:40:13 BoogieIcfgContainer [2023-04-01 23:40:13,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 23:40:13,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 23:40:13,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 23:40:13,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 23:40:13,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:40:09" (1/3) ... [2023-04-01 23:40:13,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd64b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:40:13, skipping insertion in model container [2023-04-01 23:40:13,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:40:10" (2/3) ... [2023-04-01 23:40:13,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd64b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:40:13, skipping insertion in model container [2023-04-01 23:40:13,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:40:13" (3/3) ... [2023-04-01 23:40:13,687 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label15.c [2023-04-01 23:40:13,704 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 23:40:13,704 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 23:40:13,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 23:40:13,767 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;@7febd3ee, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 23:40:13,767 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 23:40:13,776 INFO L276 IsEmpty]: Start isEmpty. Operand has 774 states, 762 states have (on average 1.9041994750656168) internal successors, (1451), 763 states have internal predecessors, (1451), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 23:40:13,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-04-01 23:40:13,784 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:13,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:13,786 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:13,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:13,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1059381610, now seen corresponding path program 1 times [2023-04-01 23:40:13,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:13,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350684034] [2023-04-01 23:40:13,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:13,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:14,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:14,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:40:14,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:14,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350684034] [2023-04-01 23:40:14,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350684034] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:40:14,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:40:14,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 23:40:14,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674391994] [2023-04-01 23:40:14,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:40:14,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 23:40:14,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:14,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 23:40:14,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 23:40:14,337 INFO L87 Difference]: Start difference. First operand has 774 states, 762 states have (on average 1.9041994750656168) internal successors, (1451), 763 states have internal predecessors, (1451), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:40:18,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:18,988 INFO L93 Difference]: Finished difference Result 2286 states and 4364 transitions. [2023-04-01 23:40:18,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 23:40:18,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2023-04-01 23:40:18,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:19,012 INFO L225 Difference]: With dead ends: 2286 [2023-04-01 23:40:19,013 INFO L226 Difference]: Without dead ends: 1432 [2023-04-01 23:40:19,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:40:19,023 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2244 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3226 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2244 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 3957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 3226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:19,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2244 Valid, 38 Invalid, 3957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [731 Valid, 3226 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-04-01 23:40:19,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2023-04-01 23:40:19,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1428. [2023-04-01 23:40:19,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1406 states have (on average 1.5896159317211949) internal successors, (2235), 1408 states have internal predecessors, (2235), 8 states have call successors, (8), 8 states have call predecessors, (8), 13 states have return successors, (19), 11 states have call predecessors, (19), 7 states have call successors, (19) [2023-04-01 23:40:19,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 2262 transitions. [2023-04-01 23:40:19,154 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 2262 transitions. Word has length 41 [2023-04-01 23:40:19,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:19,156 INFO L495 AbstractCegarLoop]: Abstraction has 1428 states and 2262 transitions. [2023-04-01 23:40:19,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:40:19,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 2262 transitions. [2023-04-01 23:40:19,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-04-01 23:40:19,163 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:19,163 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:19,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 23:40:19,164 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:19,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:19,165 INFO L85 PathProgramCache]: Analyzing trace with hash 348864317, now seen corresponding path program 1 times [2023-04-01 23:40:19,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:19,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952032905] [2023-04-01 23:40:19,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:19,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:19,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:19,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:19,498 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:40:19,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:19,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952032905] [2023-04-01 23:40:19,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952032905] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:40:19,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:40:19,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 23:40:19,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594793268] [2023-04-01 23:40:19,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:40:19,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 23:40:19,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:19,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 23:40:19,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:40:19,527 INFO L87 Difference]: Start difference. First operand 1428 states and 2262 transitions. Second operand has 8 states, 7 states have (on average 14.857142857142858) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:40:26,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:26,300 INFO L93 Difference]: Finished difference Result 5784 states and 9263 transitions. [2023-04-01 23:40:26,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 23:40:26,301 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.857142857142858) internal successors, (104), 5 states have internal predecessors, (104), 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 110 [2023-04-01 23:40:26,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:26,320 INFO L225 Difference]: With dead ends: 5784 [2023-04-01 23:40:26,321 INFO L226 Difference]: Without dead ends: 4362 [2023-04-01 23:40:26,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:40:26,326 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 3830 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 7436 mSolverCounterSat, 1572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3830 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 9008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1572 IncrementalHoareTripleChecker+Valid, 7436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:26,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3830 Valid, 120 Invalid, 9008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1572 Valid, 7436 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-04-01 23:40:26,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4362 states. [2023-04-01 23:40:26,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4362 to 4345. [2023-04-01 23:40:26,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4345 states, 4258 states have (on average 1.3586190699859089) internal successors, (5785), 4274 states have internal predecessors, (5785), 20 states have call successors, (20), 20 states have call predecessors, (20), 66 states have return successors, (175), 50 states have call predecessors, (175), 19 states have call successors, (175) [2023-04-01 23:40:26,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4345 states to 4345 states and 5980 transitions. [2023-04-01 23:40:26,489 INFO L78 Accepts]: Start accepts. Automaton has 4345 states and 5980 transitions. Word has length 110 [2023-04-01 23:40:26,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:26,490 INFO L495 AbstractCegarLoop]: Abstraction has 4345 states and 5980 transitions. [2023-04-01 23:40:26,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.857142857142858) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:40:26,491 INFO L276 IsEmpty]: Start isEmpty. Operand 4345 states and 5980 transitions. [2023-04-01 23:40:26,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-04-01 23:40:26,503 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:26,504 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:26,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 23:40:26,504 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:26,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:26,505 INFO L85 PathProgramCache]: Analyzing trace with hash -17184763, now seen corresponding path program 1 times [2023-04-01 23:40:26,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:26,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443191978] [2023-04-01 23:40:26,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:26,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:26,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:26,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:26,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:40:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:26,970 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 23:40:26,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:26,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443191978] [2023-04-01 23:40:26,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443191978] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:26,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323247192] [2023-04-01 23:40:26,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:26,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:26,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:26,979 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:26,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 23:40:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:27,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:40:27,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:27,294 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:40:27,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:40:27,569 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:40:27,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323247192] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:40:27,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:40:27,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:40:27,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315596804] [2023-04-01 23:40:27,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:40:27,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:40:27,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:27,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:40:27,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:40:27,573 INFO L87 Difference]: Start difference. First operand 4345 states and 5980 transitions. Second operand has 11 states, 11 states have (on average 33.63636363636363) internal successors, (370), 9 states have internal predecessors, (370), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:40:34,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:34,655 INFO L93 Difference]: Finished difference Result 14716 states and 20304 transitions. [2023-04-01 23:40:34,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-01 23:40:34,655 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 33.63636363636363) internal successors, (370), 9 states have internal predecessors, (370), 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 236 [2023-04-01 23:40:34,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:34,690 INFO L225 Difference]: With dead ends: 14716 [2023-04-01 23:40:34,691 INFO L226 Difference]: Without dead ends: 9603 [2023-04-01 23:40:34,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 476 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-04-01 23:40:34,702 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 3754 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 11933 mSolverCounterSat, 1946 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 13879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1946 IncrementalHoareTripleChecker+Valid, 11933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:34,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3757 Valid, 205 Invalid, 13879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1946 Valid, 11933 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-04-01 23:40:34,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9603 states. [2023-04-01 23:40:34,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9603 to 9455. [2023-04-01 23:40:34,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9455 states, 9250 states have (on average 1.1363243243243244) internal successors, (10511), 9299 states have internal predecessors, (10511), 42 states have call successors, (42), 41 states have call predecessors, (42), 162 states have return successors, (428), 114 states have call predecessors, (428), 41 states have call successors, (428) [2023-04-01 23:40:34,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9455 states to 9455 states and 10981 transitions. [2023-04-01 23:40:34,918 INFO L78 Accepts]: Start accepts. Automaton has 9455 states and 10981 transitions. Word has length 236 [2023-04-01 23:40:34,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:34,919 INFO L495 AbstractCegarLoop]: Abstraction has 9455 states and 10981 transitions. [2023-04-01 23:40:34,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 33.63636363636363) internal successors, (370), 9 states have internal predecessors, (370), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:40:34,920 INFO L276 IsEmpty]: Start isEmpty. Operand 9455 states and 10981 transitions. [2023-04-01 23:40:34,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-04-01 23:40:34,923 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:34,923 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:34,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 23:40:35,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:35,133 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:35,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:35,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1617915510, now seen corresponding path program 1 times [2023-04-01 23:40:35,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:35,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729150937] [2023-04-01 23:40:35,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:35,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:35,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:35,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:35,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:40:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:35,480 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-04-01 23:40:35,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:35,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729150937] [2023-04-01 23:40:35,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729150937] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:35,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950452256] [2023-04-01 23:40:35,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:35,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:35,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:35,483 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:35,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 23:40:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:35,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:40:35,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:35,659 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-04-01 23:40:35,659 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:40:35,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950452256] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:40:35,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:40:35,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:40:35,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714443870] [2023-04-01 23:40:35,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:40:35,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:40:35,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:35,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:40:35,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:40:35,665 INFO L87 Difference]: Start difference. First operand 9455 states and 10981 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:40:37,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:37,761 INFO L93 Difference]: Finished difference Result 17496 states and 20441 transitions. [2023-04-01 23:40:37,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:40:37,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 269 [2023-04-01 23:40:37,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:37,798 INFO L225 Difference]: With dead ends: 17496 [2023-04-01 23:40:37,798 INFO L226 Difference]: Without dead ends: 9455 [2023-04-01 23:40:37,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 275 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 23:40:37,817 INFO L413 NwaCegarLoop]: 1026 mSDtfsCounter, 734 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 2201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:37,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 1052 Invalid, 2201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 1823 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-01 23:40:37,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9455 states. [2023-04-01 23:40:37,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9455 to 9447. [2023-04-01 23:40:37,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9447 states, 9245 states have (on average 1.0918334234721472) internal successors, (10094), 9293 states have internal predecessors, (10094), 42 states have call successors, (42), 41 states have call predecessors, (42), 159 states have return successors, (318), 112 states have call predecessors, (318), 41 states have call successors, (318) [2023-04-01 23:40:37,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9447 states to 9447 states and 10454 transitions. [2023-04-01 23:40:37,991 INFO L78 Accepts]: Start accepts. Automaton has 9447 states and 10454 transitions. Word has length 269 [2023-04-01 23:40:37,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:37,992 INFO L495 AbstractCegarLoop]: Abstraction has 9447 states and 10454 transitions. [2023-04-01 23:40:37,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:40:37,992 INFO L276 IsEmpty]: Start isEmpty. Operand 9447 states and 10454 transitions. [2023-04-01 23:40:37,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-04-01 23:40:37,995 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:37,995 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:38,004 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 23:40:38,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-04-01 23:40:38,201 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:38,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:38,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1383296522, now seen corresponding path program 1 times [2023-04-01 23:40:38,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:38,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584876886] [2023-04-01 23:40:38,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:38,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:38,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:38,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:38,756 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:40:38,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:38,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584876886] [2023-04-01 23:40:38,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584876886] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:40:38,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:40:38,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:40:38,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449137849] [2023-04-01 23:40:38,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:40:38,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:40:38,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:38,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:40:38,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:40:38,771 INFO L87 Difference]: Start difference. First operand 9447 states and 10454 transitions. Second operand has 7 states, 6 states have (on average 44.833333333333336) internal successors, (269), 4 states have internal predecessors, (269), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:40:42,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:42,117 INFO L93 Difference]: Finished difference Result 21904 states and 24766 transitions. [2023-04-01 23:40:42,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 23:40:42,126 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 44.833333333333336) internal successors, (269), 4 states have internal predecessors, (269), 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 275 [2023-04-01 23:40:42,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:42,174 INFO L225 Difference]: With dead ends: 21904 [2023-04-01 23:40:42,174 INFO L226 Difference]: Without dead ends: 13871 [2023-04-01 23:40:42,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:40:42,192 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 3612 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4425 mSolverCounterSat, 501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3612 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 4926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 501 IncrementalHoareTripleChecker+Valid, 4425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:42,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3612 Valid, 130 Invalid, 4926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [501 Valid, 4425 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-01 23:40:42,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13871 states. [2023-04-01 23:40:42,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13871 to 12391. [2023-04-01 23:40:42,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12391 states, 12111 states have (on average 1.0778630996614649) internal successors, (13054), 12184 states have internal predecessors, (13054), 53 states have call successors, (53), 53 states have call predecessors, (53), 226 states have return successors, (500), 153 states have call predecessors, (500), 52 states have call successors, (500) [2023-04-01 23:40:42,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12391 states to 12391 states and 13607 transitions. [2023-04-01 23:40:42,463 INFO L78 Accepts]: Start accepts. Automaton has 12391 states and 13607 transitions. Word has length 275 [2023-04-01 23:40:42,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:42,464 INFO L495 AbstractCegarLoop]: Abstraction has 12391 states and 13607 transitions. [2023-04-01 23:40:42,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 44.833333333333336) internal successors, (269), 4 states have internal predecessors, (269), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:40:42,464 INFO L276 IsEmpty]: Start isEmpty. Operand 12391 states and 13607 transitions. [2023-04-01 23:40:42,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2023-04-01 23:40:42,470 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:42,470 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-01 23:40:42,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 23:40:42,470 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:42,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:42,471 INFO L85 PathProgramCache]: Analyzing trace with hash -529711199, now seen corresponding path program 1 times [2023-04-01 23:40:42,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:42,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273453659] [2023-04-01 23:40:42,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:42,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:42,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:42,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:42,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:40:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:42,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:40:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:42,783 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 105 proven. 3 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-04-01 23:40:42,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:42,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273453659] [2023-04-01 23:40:42,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273453659] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:42,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002381719] [2023-04-01 23:40:42,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:42,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:42,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:42,786 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:42,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 23:40:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:42,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:40:42,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:42,974 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-04-01 23:40:42,974 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:40:42,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002381719] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:40:42,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:40:42,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:40:42,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112029651] [2023-04-01 23:40:42,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:40:42,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:40:42,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:42,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:40:42,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:40:42,976 INFO L87 Difference]: Start difference. First operand 12391 states and 13607 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:40:45,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:45,271 INFO L93 Difference]: Finished difference Result 34732 states and 38796 transitions. [2023-04-01 23:40:45,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:40:45,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 356 [2023-04-01 23:40:45,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:45,329 INFO L225 Difference]: With dead ends: 34732 [2023-04-01 23:40:45,330 INFO L226 Difference]: Without dead ends: 21565 [2023-04-01 23:40:45,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:40:45,357 INFO L413 NwaCegarLoop]: 1165 mSDtfsCounter, 666 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 2362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:45,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 1191 Invalid, 2362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-01 23:40:45,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21565 states. [2023-04-01 23:40:45,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21565 to 21560. [2023-04-01 23:40:45,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21560 states, 21182 states have (on average 1.0443300915871967) internal successors, (22121), 21272 states have internal predecessors, (22121), 92 states have call successors, (92), 92 states have call predecessors, (92), 285 states have return successors, (891), 195 states have call predecessors, (891), 91 states have call successors, (891) [2023-04-01 23:40:45,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21560 states to 21560 states and 23104 transitions. [2023-04-01 23:40:45,707 INFO L78 Accepts]: Start accepts. Automaton has 21560 states and 23104 transitions. Word has length 356 [2023-04-01 23:40:45,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:45,708 INFO L495 AbstractCegarLoop]: Abstraction has 21560 states and 23104 transitions. [2023-04-01 23:40:45,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:40:45,708 INFO L276 IsEmpty]: Start isEmpty. Operand 21560 states and 23104 transitions. [2023-04-01 23:40:45,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2023-04-01 23:40:45,713 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:45,713 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-01 23:40:45,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 23:40:45,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:45,925 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:45,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:45,926 INFO L85 PathProgramCache]: Analyzing trace with hash -464450990, now seen corresponding path program 1 times [2023-04-01 23:40:45,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:45,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414919088] [2023-04-01 23:40:45,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:45,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:46,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:46,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:46,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:40:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:46,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:40:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:46,310 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 105 proven. 3 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-04-01 23:40:46,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:46,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414919088] [2023-04-01 23:40:46,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414919088] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:46,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403946721] [2023-04-01 23:40:46,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:46,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:46,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:46,312 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:46,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 23:40:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:46,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:40:46,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:46,504 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-04-01 23:40:46,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:40:46,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403946721] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:40:46,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:40:46,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:40:46,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428771030] [2023-04-01 23:40:46,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:40:46,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:40:46,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:46,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:40:46,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:40:46,507 INFO L87 Difference]: Start difference. First operand 21560 states and 23104 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:40:48,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:48,549 INFO L93 Difference]: Finished difference Result 50212 states and 54503 transitions. [2023-04-01 23:40:48,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:40:48,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 357 [2023-04-01 23:40:48,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:48,616 INFO L225 Difference]: With dead ends: 50212 [2023-04-01 23:40:48,617 INFO L226 Difference]: Without dead ends: 28658 [2023-04-01 23:40:48,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 365 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 23:40:48,646 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 697 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 2037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:48,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 196 Invalid, 2037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-01 23:40:48,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28658 states. [2023-04-01 23:40:48,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28658 to 27252. [2023-04-01 23:40:48,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27252 states, 26796 states have (on average 1.0490744887296612) internal successors, (28111), 26900 states have internal predecessors, (28111), 116 states have call successors, (116), 116 states have call predecessors, (116), 339 states have return successors, (1332), 235 states have call predecessors, (1332), 115 states have call successors, (1332) [2023-04-01 23:40:49,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27252 states to 27252 states and 29559 transitions. [2023-04-01 23:40:49,035 INFO L78 Accepts]: Start accepts. Automaton has 27252 states and 29559 transitions. Word has length 357 [2023-04-01 23:40:49,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:49,036 INFO L495 AbstractCegarLoop]: Abstraction has 27252 states and 29559 transitions. [2023-04-01 23:40:49,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:40:49,036 INFO L276 IsEmpty]: Start isEmpty. Operand 27252 states and 29559 transitions. [2023-04-01 23:40:49,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2023-04-01 23:40:49,041 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:49,041 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-01 23:40:49,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 23:40:49,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:49,247 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:49,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:49,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1126448177, now seen corresponding path program 1 times [2023-04-01 23:40:49,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:49,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824697898] [2023-04-01 23:40:49,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:49,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:49,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:49,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:49,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:40:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:49,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:40:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:49,656 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 105 proven. 3 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-04-01 23:40:49,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:49,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824697898] [2023-04-01 23:40:49,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824697898] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:49,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251416471] [2023-04-01 23:40:49,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:49,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:49,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:49,658 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:49,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 23:40:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:49,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:40:49,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:49,874 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-04-01 23:40:49,874 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:40:49,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251416471] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:40:49,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:40:49,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:40:49,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457464162] [2023-04-01 23:40:49,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:40:49,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:40:49,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:49,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:40:49,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:40:49,876 INFO L87 Difference]: Start difference. First operand 27252 states and 29559 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:40:51,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:51,780 INFO L93 Difference]: Finished difference Result 67297 states and 74045 transitions. [2023-04-01 23:40:51,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:40:51,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 364 [2023-04-01 23:40:51,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:51,891 INFO L225 Difference]: With dead ends: 67297 [2023-04-01 23:40:51,891 INFO L226 Difference]: Without dead ends: 39339 [2023-04-01 23:40:51,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:40:51,935 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 675 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 2053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:51,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 943 Invalid, 2053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 1760 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-01 23:40:51,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39339 states. [2023-04-01 23:40:52,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39339 to 37928. [2023-04-01 23:40:52,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37928 states, 37322 states have (on average 1.0487915974492257) internal successors, (39143), 37460 states have internal predecessors, (39143), 161 states have call successors, (161), 161 states have call predecessors, (161), 444 states have return successors, (2237), 306 states have call predecessors, (2237), 160 states have call successors, (2237) [2023-04-01 23:40:52,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37928 states to 37928 states and 41541 transitions. [2023-04-01 23:40:52,560 INFO L78 Accepts]: Start accepts. Automaton has 37928 states and 41541 transitions. Word has length 364 [2023-04-01 23:40:52,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:52,561 INFO L495 AbstractCegarLoop]: Abstraction has 37928 states and 41541 transitions. [2023-04-01 23:40:52,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:40:52,561 INFO L276 IsEmpty]: Start isEmpty. Operand 37928 states and 41541 transitions. [2023-04-01 23:40:52,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2023-04-01 23:40:52,570 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:52,570 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-01 23:40:52,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 23:40:52,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:52,778 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:52,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:52,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1534991843, now seen corresponding path program 1 times [2023-04-01 23:40:52,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:52,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877742414] [2023-04-01 23:40:52,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:52,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:53,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:53,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:53,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:40:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:53,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:40:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:53,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-04-01 23:40:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:53,318 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 141 proven. 4 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2023-04-01 23:40:53,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:53,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877742414] [2023-04-01 23:40:53,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877742414] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:53,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340566896] [2023-04-01 23:40:53,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:53,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:53,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:53,320 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:53,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 23:40:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:53,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:40:53,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:53,591 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2023-04-01 23:40:53,591 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:40:53,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340566896] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:40:53,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:40:53,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:40:53,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711228986] [2023-04-01 23:40:53,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:40:53,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:40:53,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:53,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:40:53,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:40:53,593 INFO L87 Difference]: Start difference. First operand 37928 states and 41541 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:40:55,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:55,254 INFO L93 Difference]: Finished difference Result 75850 states and 83076 transitions. [2023-04-01 23:40:55,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:40:55,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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 460 [2023-04-01 23:40:55,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:55,351 INFO L225 Difference]: With dead ends: 75850 [2023-04-01 23:40:55,351 INFO L226 Difference]: Without dead ends: 37928 [2023-04-01 23:40:55,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 470 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 23:40:55,403 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 772 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:55,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 790 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1702 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-01 23:40:55,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37928 states. [2023-04-01 23:40:55,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37928 to 37928. [2023-04-01 23:40:56,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37928 states, 37322 states have (on average 1.0423878677455656) internal successors, (38904), 37460 states have internal predecessors, (38904), 161 states have call successors, (161), 161 states have call predecessors, (161), 444 states have return successors, (2006), 306 states have call predecessors, (2006), 160 states have call successors, (2006) [2023-04-01 23:40:56,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37928 states to 37928 states and 41071 transitions. [2023-04-01 23:40:56,085 INFO L78 Accepts]: Start accepts. Automaton has 37928 states and 41071 transitions. Word has length 460 [2023-04-01 23:40:56,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:56,086 INFO L495 AbstractCegarLoop]: Abstraction has 37928 states and 41071 transitions. [2023-04-01 23:40:56,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:40:56,086 INFO L276 IsEmpty]: Start isEmpty. Operand 37928 states and 41071 transitions. [2023-04-01 23:40:56,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2023-04-01 23:40:56,110 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:56,111 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:56,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-04-01 23:40:56,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:56,318 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:56,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:56,318 INFO L85 PathProgramCache]: Analyzing trace with hash -951228093, now seen corresponding path program 1 times [2023-04-01 23:40:56,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:56,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528560325] [2023-04-01 23:40:56,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:56,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:56,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:56,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:56,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:40:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:56,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:40:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:57,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:40:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:57,132 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 105 proven. 3 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 23:40:57,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:57,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528560325] [2023-04-01 23:40:57,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528560325] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:57,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992934574] [2023-04-01 23:40:57,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:57,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:57,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:57,134 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:57,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 23:40:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:57,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 929 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:40:57,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:57,449 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 23:40:57,449 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:40:57,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992934574] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:40:57,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:40:57,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:40:57,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11347418] [2023-04-01 23:40:57,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:40:57,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:40:57,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:57,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:40:57,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:40:57,452 INFO L87 Difference]: Start difference. First operand 37928 states and 41071 transitions. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:40:59,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:59,189 INFO L93 Difference]: Finished difference Result 75850 states and 82141 transitions. [2023-04-01 23:40:59,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:40:59,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 660 [2023-04-01 23:40:59,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:59,275 INFO L225 Difference]: With dead ends: 75850 [2023-04-01 23:40:59,275 INFO L226 Difference]: Without dead ends: 37928 [2023-04-01 23:40:59,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 671 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 23:40:59,307 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 715 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 1681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:59,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 111 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 1681 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 23:40:59,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37928 states. [2023-04-01 23:40:59,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37928 to 37226. [2023-04-01 23:40:59,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37226 states, 36626 states have (on average 1.0377873641675313) internal successors, (38010), 36764 states have internal predecessors, (38010), 158 states have call successors, (158), 158 states have call predecessors, (158), 441 states have return successors, (1788), 303 states have call predecessors, (1788), 157 states have call successors, (1788) [2023-04-01 23:40:59,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37226 states to 37226 states and 39956 transitions. [2023-04-01 23:40:59,979 INFO L78 Accepts]: Start accepts. Automaton has 37226 states and 39956 transitions. Word has length 660 [2023-04-01 23:40:59,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:59,980 INFO L495 AbstractCegarLoop]: Abstraction has 37226 states and 39956 transitions. [2023-04-01 23:40:59,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:40:59,980 INFO L276 IsEmpty]: Start isEmpty. Operand 37226 states and 39956 transitions. [2023-04-01 23:41:00,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2023-04-01 23:41:00,014 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:41:00,014 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:41:00,021 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 23:41:00,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:41:00,221 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:41:00,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:41:00,222 INFO L85 PathProgramCache]: Analyzing trace with hash 41799061, now seen corresponding path program 1 times [2023-04-01 23:41:00,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:41:00,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36209857] [2023-04-01 23:41:00,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:00,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:41:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:00,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:41:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:00,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:41:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:00,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:41:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:00,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:41:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:01,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:01,132 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 105 proven. 3 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 23:41:01,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:41:01,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36209857] [2023-04-01 23:41:01,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36209857] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:41:01,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807587283] [2023-04-01 23:41:01,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:01,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:41:01,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:41:01,134 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:41:01,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 23:41:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:01,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:41:01,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:41:01,446 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 23:41:01,446 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:41:01,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807587283] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:41:01,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:41:01,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:41:01,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856291369] [2023-04-01 23:41:01,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:41:01,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:41:01,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:41:01,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:41:01,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:41:01,448 INFO L87 Difference]: Start difference. First operand 37226 states and 39956 transitions. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:41:03,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:41:03,342 INFO L93 Difference]: Finished difference Result 94945 states and 102969 transitions. [2023-04-01 23:41:03,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:41:03,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 769 [2023-04-01 23:41:03,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:41:03,493 INFO L225 Difference]: With dead ends: 94945 [2023-04-01 23:41:03,493 INFO L226 Difference]: Without dead ends: 57018 [2023-04-01 23:41:03,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 780 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 23:41:03,566 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 678 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1769 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 1769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:41:03,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 256 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 1769 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-01 23:41:03,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57018 states. [2023-04-01 23:41:04,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57018 to 57016. [2023-04-01 23:41:04,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57016 states, 56192 states have (on average 1.0353431093394077) internal successors, (58178), 56364 states have internal predecessors, (58178), 242 states have call successors, (242), 242 states have call predecessors, (242), 581 states have return successors, (2884), 409 states have call predecessors, (2884), 241 states have call successors, (2884) [2023-04-01 23:41:04,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57016 states to 57016 states and 61304 transitions. [2023-04-01 23:41:04,619 INFO L78 Accepts]: Start accepts. Automaton has 57016 states and 61304 transitions. Word has length 769 [2023-04-01 23:41:04,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:41:04,620 INFO L495 AbstractCegarLoop]: Abstraction has 57016 states and 61304 transitions. [2023-04-01 23:41:04,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:41:04,622 INFO L276 IsEmpty]: Start isEmpty. Operand 57016 states and 61304 transitions. [2023-04-01 23:41:04,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2023-04-01 23:41:04,683 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:41:04,684 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:41:04,693 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 23:41:04,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-04-01 23:41:04,891 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:41:04,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:41:04,989 INFO L85 PathProgramCache]: Analyzing trace with hash -462357739, now seen corresponding path program 1 times [2023-04-01 23:41:04,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:41:04,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34749753] [2023-04-01 23:41:04,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:04,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:41:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:05,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:41:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:05,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:41:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:05,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:41:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:06,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:41:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:06,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:06,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:41:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:06,929 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 105 proven. 3 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 23:41:06,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:41:06,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34749753] [2023-04-01 23:41:06,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34749753] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:41:06,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190861243] [2023-04-01 23:41:06,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:06,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:41:06,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:41:06,931 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:41:06,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 23:41:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:07,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 1106 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 23:41:07,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:41:07,681 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-04-01 23:41:07,682 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:41:07,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190861243] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:41:07,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:41:07,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-04-01 23:41:07,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150692585] [2023-04-01 23:41:07,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:41:07,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:41:07,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:41:07,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:41:07,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:41:07,684 INFO L87 Difference]: Start difference. First operand 57016 states and 61304 transitions. Second operand has 5 states, 5 states have (on average 133.4) internal successors, (667), 4 states have internal predecessors, (667), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:41:10,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:41:10,414 INFO L93 Difference]: Finished difference Result 119111 states and 128078 transitions. [2023-04-01 23:41:10,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 23:41:10,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 133.4) internal successors, (667), 4 states have internal predecessors, (667), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 817 [2023-04-01 23:41:10,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:41:10,534 INFO L225 Difference]: With dead ends: 119111 [2023-04-01 23:41:10,534 INFO L226 Difference]: Without dead ends: 62101 [2023-04-01 23:41:10,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 838 GetRequests, 829 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:41:10,601 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 1901 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 3212 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1901 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 3426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 3212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:41:10,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1901 Valid, 106 Invalid, 3426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 3212 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-01 23:41:10,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62101 states. [2023-04-01 23:41:11,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62101 to 61380. [2023-04-01 23:41:11,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61380 states, 60457 states have (on average 1.033825694295119) internal successors, (62502), 60666 states have internal predecessors, (62502), 260 states have call successors, (260), 260 states have call predecessors, (260), 662 states have return successors, (3145), 453 states have call predecessors, (3145), 259 states have call successors, (3145) [2023-04-01 23:41:11,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61380 states to 61380 states and 65907 transitions. [2023-04-01 23:41:11,686 INFO L78 Accepts]: Start accepts. Automaton has 61380 states and 65907 transitions. Word has length 817 [2023-04-01 23:41:11,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:41:11,687 INFO L495 AbstractCegarLoop]: Abstraction has 61380 states and 65907 transitions. [2023-04-01 23:41:11,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.4) internal successors, (667), 4 states have internal predecessors, (667), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:41:11,687 INFO L276 IsEmpty]: Start isEmpty. Operand 61380 states and 65907 transitions. [2023-04-01 23:41:11,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1125 [2023-04-01 23:41:11,783 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:41:11,784 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:41:11,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 23:41:11,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:41:11,990 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:41:11,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:41:11,991 INFO L85 PathProgramCache]: Analyzing trace with hash -176454710, now seen corresponding path program 1 times [2023-04-01 23:41:11,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:41:11,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125325762] [2023-04-01 23:41:11,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:11,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:41:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:13,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:41:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:13,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:41:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:13,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:13,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-04-01 23:41:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:13,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2023-04-01 23:41:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:13,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2023-04-01 23:41:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:14,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:14,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:41:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:14,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 144 proven. 4 refuted. 0 times theorem prover too weak. 857 trivial. 0 not checked. [2023-04-01 23:41:14,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:41:14,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125325762] [2023-04-01 23:41:14,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125325762] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:41:14,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049540285] [2023-04-01 23:41:14,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:14,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:41:14,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:41:14,323 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:41:14,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 23:41:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:14,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:41:14,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:41:15,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 566 proven. 0 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2023-04-01 23:41:15,088 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:41:15,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049540285] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:41:15,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:41:15,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-04-01 23:41:15,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454156221] [2023-04-01 23:41:15,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:41:15,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:41:15,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:41:15,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:41:15,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:41:15,092 INFO L87 Difference]: Start difference. First operand 61380 states and 65907 transitions. Second operand has 5 states, 5 states have (on average 170.2) internal successors, (851), 4 states have internal predecessors, (851), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-01 23:41:17,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:41:17,847 INFO L93 Difference]: Finished difference Result 133520 states and 144499 transitions. [2023-04-01 23:41:17,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 23:41:17,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 170.2) internal successors, (851), 4 states have internal predecessors, (851), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 1124 [2023-04-01 23:41:17,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:41:17,972 INFO L225 Difference]: With dead ends: 133520 [2023-04-01 23:41:17,972 INFO L226 Difference]: Without dead ends: 72146 [2023-04-01 23:41:18,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1149 GetRequests, 1140 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:41:18,018 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 1546 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 3308 mSolverCounterSat, 499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 3807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 3308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:41:18,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 111 Invalid, 3807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 3308 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-01 23:41:18,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72146 states. [2023-04-01 23:41:18,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72146 to 72121. [2023-04-01 23:41:18,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72121 states, 71021 states have (on average 1.034215232114445) internal successors, (73451), 71280 states have internal predecessors, (73451), 305 states have call successors, (305), 305 states have call predecessors, (305), 794 states have return successors, (4044), 535 states have call predecessors, (4044), 304 states have call successors, (4044) [2023-04-01 23:41:19,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72121 states to 72121 states and 77800 transitions. [2023-04-01 23:41:19,009 INFO L78 Accepts]: Start accepts. Automaton has 72121 states and 77800 transitions. Word has length 1124 [2023-04-01 23:41:19,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:41:19,010 INFO L495 AbstractCegarLoop]: Abstraction has 72121 states and 77800 transitions. [2023-04-01 23:41:19,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 170.2) internal successors, (851), 4 states have internal predecessors, (851), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-01 23:41:19,010 INFO L276 IsEmpty]: Start isEmpty. Operand 72121 states and 77800 transitions. [2023-04-01 23:41:19,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1652 [2023-04-01 23:41:19,078 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:41:19,079 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:41:19,086 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 23:41:19,285 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,SelfDestructingSolverStorable12 [2023-04-01 23:41:19,286 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:41:19,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:41:19,287 INFO L85 PathProgramCache]: Analyzing trace with hash 749934979, now seen corresponding path program 1 times [2023-04-01 23:41:19,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:41:19,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513400477] [2023-04-01 23:41:19,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:19,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:41:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:20,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:41:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:20,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:41:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:21,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:21,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:41:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:21,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:41:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:21,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:21,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:41:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:21,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2023-04-01 23:41:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:21,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1070 [2023-04-01 23:41:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:21,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:21,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:41:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:21,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2101 backedges. 186 proven. 5 refuted. 0 times theorem prover too weak. 1910 trivial. 0 not checked. [2023-04-01 23:41:21,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:41:21,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513400477] [2023-04-01 23:41:21,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513400477] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:41:21,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426366620] [2023-04-01 23:41:21,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:21,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:41:21,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:41:21,872 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 23:41:21,875 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 23:41:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:22,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 23:41:22,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:41:22,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2101 backedges. 1622 proven. 2 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2023-04-01 23:41:22,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:41:25,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2101 backedges. 434 proven. 229 refuted. 0 times theorem prover too weak. 1438 trivial. 0 not checked. [2023-04-01 23:41:25,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426366620] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:41:25,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:41:25,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-04-01 23:41:25,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285991069] [2023-04-01 23:41:25,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:41:25,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 23:41:25,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:41:25,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 23:41:25,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-01 23:41:25,368 INFO L87 Difference]: Start difference. First operand 72121 states and 77800 transitions. Second operand has 10 states, 10 states have (on average 138.5) internal successors, (1385), 8 states have internal predecessors, (1385), 5 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-04-01 23:41:32,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:41:32,950 INFO L93 Difference]: Finished difference Result 171845 states and 186545 transitions. [2023-04-01 23:41:32,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-04-01 23:41:32,950 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 138.5) internal successors, (1385), 8 states have internal predecessors, (1385), 5 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 1651 [2023-04-01 23:41:32,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:41:33,172 INFO L225 Difference]: With dead ends: 171845 [2023-04-01 23:41:33,172 INFO L226 Difference]: Without dead ends: 98316 [2023-04-01 23:41:33,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3378 GetRequests, 3345 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=270, Invalid=852, Unknown=0, NotChecked=0, Total=1122 [2023-04-01 23:41:33,262 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 9036 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 7343 mSolverCounterSat, 1393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9036 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 8736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1393 IncrementalHoareTripleChecker+Valid, 7343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:41:33,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9036 Valid, 191 Invalid, 8736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1393 Valid, 7343 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-04-01 23:41:33,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98316 states. [2023-04-01 23:41:34,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98316 to 92652. [2023-04-01 23:41:34,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92652 states, 91305 states have (on average 1.031104539729478) internal successors, (94145), 91610 states have internal predecessors, (94145), 392 states have call successors, (392), 392 states have call predecessors, (392), 954 states have return successors, (4888), 649 states have call predecessors, (4888), 391 states have call successors, (4888) [2023-04-01 23:41:35,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92652 states to 92652 states and 99425 transitions. [2023-04-01 23:41:35,106 INFO L78 Accepts]: Start accepts. Automaton has 92652 states and 99425 transitions. Word has length 1651 [2023-04-01 23:41:35,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:41:35,107 INFO L495 AbstractCegarLoop]: Abstraction has 92652 states and 99425 transitions. [2023-04-01 23:41:35,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 138.5) internal successors, (1385), 8 states have internal predecessors, (1385), 5 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-04-01 23:41:35,108 INFO L276 IsEmpty]: Start isEmpty. Operand 92652 states and 99425 transitions. [2023-04-01 23:41:35,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1803 [2023-04-01 23:41:35,167 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:41:35,168 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:41:35,175 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 23:41:35,375 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,SelfDestructingSolverStorable13 [2023-04-01 23:41:35,375 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:41:35,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:41:35,376 INFO L85 PathProgramCache]: Analyzing trace with hash 466051538, now seen corresponding path program 1 times [2023-04-01 23:41:35,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:41:35,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814034274] [2023-04-01 23:41:35,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:35,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:41:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:38,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:41:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:38,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:41:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:38,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:38,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:41:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:38,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:41:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:38,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:39,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:41:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:39,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:41:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:39,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1107 [2023-04-01 23:41:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:39,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1213 [2023-04-01 23:41:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:39,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:39,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:41:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:39,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2792 backedges. 643 proven. 152 refuted. 0 times theorem prover too weak. 1997 trivial. 0 not checked. [2023-04-01 23:41:39,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:41:39,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814034274] [2023-04-01 23:41:39,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814034274] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:41:39,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872839951] [2023-04-01 23:41:39,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:39,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:41:39,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:41:39,425 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 23:41:39,431 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 23:41:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:39,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 2266 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-01 23:41:39,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:41:40,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2792 backedges. 1384 proven. 37 refuted. 0 times theorem prover too weak. 1371 trivial. 0 not checked. [2023-04-01 23:41:40,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:41:42,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2792 backedges. 1384 proven. 37 refuted. 0 times theorem prover too weak. 1371 trivial. 0 not checked. [2023-04-01 23:41:42,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872839951] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:41:42,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:41:42,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 7] total 19 [2023-04-01 23:41:42,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103240780] [2023-04-01 23:41:42,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:41:42,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-01 23:41:42,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:41:42,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-01 23:41:42,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-04-01 23:41:42,599 INFO L87 Difference]: Start difference. First operand 92652 states and 99425 transitions. Second operand has 19 states, 19 states have (on average 99.42105263157895) internal successors, (1889), 17 states have internal predecessors, (1889), 11 states have call successors, (24), 10 states have call predecessors, (24), 9 states have return successors, (21), 11 states have call predecessors, (21), 9 states have call successors, (21) [2023-04-01 23:42:11,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:42:11,193 INFO L93 Difference]: Finished difference Result 208789 states and 224456 transitions. [2023-04-01 23:42:11,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2023-04-01 23:42:11,193 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 99.42105263157895) internal successors, (1889), 17 states have internal predecessors, (1889), 11 states have call successors, (24), 10 states have call predecessors, (24), 9 states have return successors, (21), 11 states have call predecessors, (21), 9 states have call successors, (21) Word has length 1802 [2023-04-01 23:42:11,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:42:11,429 INFO L225 Difference]: With dead ends: 208789 [2023-04-01 23:42:11,429 INFO L226 Difference]: Without dead ends: 115433 [2023-04-01 23:42:11,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3832 GetRequests, 3712 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5161 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1759, Invalid=12521, Unknown=0, NotChecked=0, Total=14280 [2023-04-01 23:42:11,505 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 25099 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 48444 mSolverCounterSat, 2850 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25099 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 51294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2850 IncrementalHoareTripleChecker+Valid, 48444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:42:11,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25099 Valid, 1390 Invalid, 51294 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2850 Valid, 48444 Invalid, 0 Unknown, 0 Unchecked, 24.5s Time] [2023-04-01 23:42:11,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115433 states. [2023-04-01 23:42:12,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115433 to 106293. [2023-04-01 23:42:12,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106293 states, 104707 states have (on average 1.0242772689505) internal successors, (107249), 105084 states have internal predecessors, (107249), 449 states have call successors, (449), 449 states have call predecessors, (449), 1136 states have return successors, (4825), 759 states have call predecessors, (4825), 448 states have call successors, (4825) [2023-04-01 23:42:13,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106293 states to 106293 states and 112523 transitions. [2023-04-01 23:42:13,349 INFO L78 Accepts]: Start accepts. Automaton has 106293 states and 112523 transitions. Word has length 1802 [2023-04-01 23:42:13,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:42:13,350 INFO L495 AbstractCegarLoop]: Abstraction has 106293 states and 112523 transitions. [2023-04-01 23:42:13,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 99.42105263157895) internal successors, (1889), 17 states have internal predecessors, (1889), 11 states have call successors, (24), 10 states have call predecessors, (24), 9 states have return successors, (21), 11 states have call predecessors, (21), 9 states have call successors, (21) [2023-04-01 23:42:13,350 INFO L276 IsEmpty]: Start isEmpty. Operand 106293 states and 112523 transitions. [2023-04-01 23:42:13,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2115 [2023-04-01 23:42:13,450 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:42:13,451 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:42:13,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-04-01 23:42:13,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-04-01 23:42:13,659 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:42:13,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:42:13,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1352823244, now seen corresponding path program 1 times [2023-04-01 23:42:13,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:42:13,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233922838] [2023-04-01 23:42:13,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:42:13,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:42:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:16,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:42:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:16,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:42:16,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:16,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:16,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:42:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:16,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:42:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:16,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:17,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:42:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:17,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:42:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:17,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2023-04-01 23:42:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:17,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1204 [2023-04-01 23:42:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:17,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:17,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1525 [2023-04-01 23:42:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:17,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:17,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:42:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4103 backedges. 1742 proven. 84 refuted. 0 times theorem prover too weak. 2277 trivial. 0 not checked. [2023-04-01 23:42:17,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:42:17,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233922838] [2023-04-01 23:42:17,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233922838] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:42:17,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237395781] [2023-04-01 23:42:17,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:42:17,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:42:17,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:42:17,817 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:42:17,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-04-01 23:42:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:18,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 2643 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:42:18,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:42:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4103 backedges. 1771 proven. 5 refuted. 0 times theorem prover too weak. 2327 trivial. 0 not checked. [2023-04-01 23:42:18,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:42:20,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4103 backedges. 1771 proven. 5 refuted. 0 times theorem prover too weak. 2327 trivial. 0 not checked. [2023-04-01 23:42:20,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237395781] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:42:20,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:42:20,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 14 [2023-04-01 23:42:20,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075172186] [2023-04-01 23:42:20,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:42:20,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 23:42:20,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:42:20,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 23:42:20,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:42:20,350 INFO L87 Difference]: Start difference. First operand 106293 states and 112523 transitions. Second operand has 14 states, 14 states have (on average 159.5) internal successors, (2233), 12 states have internal predecessors, (2233), 10 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2023-04-01 23:42:28,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:42:28,238 INFO L93 Difference]: Finished difference Result 212550 states and 224913 transitions. [2023-04-01 23:42:28,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-01 23:42:28,239 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 159.5) internal successors, (2233), 12 states have internal predecessors, (2233), 10 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) Word has length 2114 [2023-04-01 23:42:28,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:42:28,437 INFO L225 Difference]: With dead ends: 212550 [2023-04-01 23:42:28,437 INFO L226 Difference]: Without dead ends: 97766 [2023-04-01 23:42:28,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4304 GetRequests, 4272 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=205, Invalid=665, Unknown=0, NotChecked=0, Total=870 [2023-04-01 23:42:28,540 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 10830 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 12419 mSolverCounterSat, 1118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10830 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 13537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1118 IncrementalHoareTripleChecker+Valid, 12419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:42:28,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10830 Valid, 295 Invalid, 13537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1118 Valid, 12419 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-04-01 23:42:28,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97766 states. [2023-04-01 23:42:30,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97766 to 96345. [2023-04-01 23:42:30,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96345 states, 94892 states have (on average 1.01912700754542) internal successors, (96707), 95242 states have internal predecessors, (96707), 407 states have call successors, (407), 407 states have call predecessors, (407), 1045 states have return successors, (3538), 695 states have call predecessors, (3538), 406 states have call successors, (3538) [2023-04-01 23:42:30,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96345 states to 96345 states and 100652 transitions. [2023-04-01 23:42:30,183 INFO L78 Accepts]: Start accepts. Automaton has 96345 states and 100652 transitions. Word has length 2114 [2023-04-01 23:42:30,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:42:30,184 INFO L495 AbstractCegarLoop]: Abstraction has 96345 states and 100652 transitions. [2023-04-01 23:42:30,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 159.5) internal successors, (2233), 12 states have internal predecessors, (2233), 10 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2023-04-01 23:42:30,185 INFO L276 IsEmpty]: Start isEmpty. Operand 96345 states and 100652 transitions. [2023-04-01 23:42:30,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2203 [2023-04-01 23:42:30,499 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:42:30,501 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:42:30,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-04-01 23:42:30,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-04-01 23:42:30,709 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:42:30,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:42:30,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1334483783, now seen corresponding path program 1 times [2023-04-01 23:42:30,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:42:30,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337379912] [2023-04-01 23:42:30,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:42:30,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:42:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:42:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:42:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:42:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:42:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:42:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:42:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2023-04-01 23:42:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1167 [2023-04-01 23:42:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1263 [2023-04-01 23:42:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1613 [2023-04-01 23:42:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:42:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:32,847 INFO L134 CoverageAnalysis]: Checked inductivity of 4620 backedges. 769 proven. 200 refuted. 0 times theorem prover too weak. 3651 trivial. 0 not checked. [2023-04-01 23:42:32,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:42:32,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337379912] [2023-04-01 23:42:32,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337379912] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:42:32,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533909705] [2023-04-01 23:42:32,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:42:32,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:42:32,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:42:32,849 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:42:32,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-04-01 23:42:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:33,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 2773 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:42:33,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:42:33,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4620 backedges. 3000 proven. 2 refuted. 0 times theorem prover too weak. 1618 trivial. 0 not checked. [2023-04-01 23:42:33,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:42:33,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4620 backedges. 777 proven. 190 refuted. 0 times theorem prover too weak. 3653 trivial. 0 not checked. [2023-04-01 23:42:33,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533909705] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:42:33,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:42:33,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 11 [2023-04-01 23:42:33,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619648651] [2023-04-01 23:42:33,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:42:33,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:42:33,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:42:33,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:42:33,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:42:33,799 INFO L87 Difference]: Start difference. First operand 96345 states and 100652 transitions. Second operand has 11 states, 11 states have (on average 127.0) internal successors, (1397), 9 states have internal predecessors, (1397), 4 states have call successors, (18), 7 states have call predecessors, (18), 5 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-01 23:42:37,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:42:37,135 INFO L93 Difference]: Finished difference Result 192023 states and 200656 transitions. [2023-04-01 23:42:37,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 23:42:37,136 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 127.0) internal successors, (1397), 9 states have internal predecessors, (1397), 4 states have call successors, (18), 7 states have call predecessors, (18), 5 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 2202 [2023-04-01 23:42:37,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:42:37,316 INFO L225 Difference]: With dead ends: 192023 [2023-04-01 23:42:37,316 INFO L226 Difference]: Without dead ends: 96394 [2023-04-01 23:42:37,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4452 GetRequests, 4435 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-04-01 23:42:37,600 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2912 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 3446 mSolverCounterSat, 1029 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2912 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 4475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1029 IncrementalHoareTripleChecker+Valid, 3446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:42:37,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2912 Valid, 87 Invalid, 4475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1029 Valid, 3446 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-04-01 23:42:37,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96394 states. [2023-04-01 23:42:38,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96394 to 96373. [2023-04-01 23:42:39,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96373 states, 94909 states have (on average 1.0185756882908892) internal successors, (96672), 95264 states have internal predecessors, (96672), 407 states have call successors, (407), 407 states have call predecessors, (407), 1056 states have return successors, (3457), 701 states have call predecessors, (3457), 406 states have call successors, (3457) [2023-04-01 23:42:39,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96373 states to 96373 states and 100536 transitions. [2023-04-01 23:42:39,193 INFO L78 Accepts]: Start accepts. Automaton has 96373 states and 100536 transitions. Word has length 2202 [2023-04-01 23:42:39,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:42:39,194 INFO L495 AbstractCegarLoop]: Abstraction has 96373 states and 100536 transitions. [2023-04-01 23:42:39,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 127.0) internal successors, (1397), 9 states have internal predecessors, (1397), 4 states have call successors, (18), 7 states have call predecessors, (18), 5 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-01 23:42:39,194 INFO L276 IsEmpty]: Start isEmpty. Operand 96373 states and 100536 transitions. [2023-04-01 23:42:39,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2264 [2023-04-01 23:42:39,549 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:42:39,550 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:42:39,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-04-01 23:42:39,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:42:39,759 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:42:39,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:42:39,761 INFO L85 PathProgramCache]: Analyzing trace with hash 417914578, now seen corresponding path program 1 times [2023-04-01 23:42:39,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:42:39,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099153211] [2023-04-01 23:42:39,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:42:39,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:42:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:42,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:42:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:42,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:42:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:43,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:43,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:42:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:43,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:42:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:43,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:43,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:42:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:43,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:42:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:43,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2023-04-01 23:42:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:43,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1324 [2023-04-01 23:42:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:43,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:44,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1674 [2023-04-01 23:42:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:44,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:44,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:42:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:44,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4679 backedges. 1390 proven. 416 refuted. 0 times theorem prover too weak. 2873 trivial. 0 not checked. [2023-04-01 23:42:44,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:42:44,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099153211] [2023-04-01 23:42:44,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099153211] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:42:44,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850510333] [2023-04-01 23:42:44,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:42:44,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:42:44,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:42:44,326 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:42:44,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-04-01 23:42:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:44,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 2795 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 23:42:44,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:42:45,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4679 backedges. 3018 proven. 2 refuted. 0 times theorem prover too weak. 1659 trivial. 0 not checked. [2023-04-01 23:42:45,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:42:46,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4679 backedges. 1407 proven. 350 refuted. 0 times theorem prover too weak. 2922 trivial. 0 not checked. [2023-04-01 23:42:46,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850510333] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:42:46,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:42:46,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 17 [2023-04-01 23:42:46,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226211890] [2023-04-01 23:42:46,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:42:46,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-01 23:42:46,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:42:46,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-01 23:42:46,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-04-01 23:42:46,263 INFO L87 Difference]: Start difference. First operand 96373 states and 100536 transitions. Second operand has 17 states, 17 states have (on average 127.58823529411765) internal successors, (2169), 15 states have internal predecessors, (2169), 10 states have call successors, (24), 7 states have call predecessors, (24), 10 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) [2023-04-01 23:43:02,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:43:02,808 INFO L93 Difference]: Finished difference Result 205589 states and 214715 transitions. [2023-04-01 23:43:02,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-04-01 23:43:02,809 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 127.58823529411765) internal successors, (2169), 15 states have internal predecessors, (2169), 10 states have call successors, (24), 7 states have call predecessors, (24), 10 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) Word has length 2263 [2023-04-01 23:43:02,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:43:03,027 INFO L225 Difference]: With dead ends: 205589 [2023-04-01 23:43:03,027 INFO L226 Difference]: Without dead ends: 109932 [2023-04-01 23:43:03,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4722 GetRequests, 4619 SyntacticMatches, 3 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3760 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1430, Invalid=8872, Unknown=0, NotChecked=0, Total=10302 [2023-04-01 23:43:03,109 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 10418 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 27884 mSolverCounterSat, 1161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10418 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 29045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1161 IncrementalHoareTripleChecker+Valid, 27884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:43:03,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10418 Valid, 796 Invalid, 29045 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1161 Valid, 27884 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time] [2023-04-01 23:43:03,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109932 states. [2023-04-01 23:43:04,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109932 to 107070. [2023-04-01 23:43:04,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107070 states, 105446 states have (on average 1.014386510631034) internal successors, (106963), 105844 states have internal predecessors, (106963), 452 states have call successors, (452), 452 states have call predecessors, (452), 1171 states have return successors, (3107), 773 states have call predecessors, (3107), 451 states have call successors, (3107) [2023-04-01 23:43:04,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107070 states to 107070 states and 110522 transitions. [2023-04-01 23:43:04,877 INFO L78 Accepts]: Start accepts. Automaton has 107070 states and 110522 transitions. Word has length 2263 [2023-04-01 23:43:04,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:43:04,878 INFO L495 AbstractCegarLoop]: Abstraction has 107070 states and 110522 transitions. [2023-04-01 23:43:04,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 127.58823529411765) internal successors, (2169), 15 states have internal predecessors, (2169), 10 states have call successors, (24), 7 states have call predecessors, (24), 10 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) [2023-04-01 23:43:04,878 INFO L276 IsEmpty]: Start isEmpty. Operand 107070 states and 110522 transitions. [2023-04-01 23:43:04,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2362 [2023-04-01 23:43:04,991 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:43:04,991 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:43:05,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-04-01 23:43:05,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-04-01 23:43:05,200 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:43:05,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:43:05,201 INFO L85 PathProgramCache]: Analyzing trace with hash -690035678, now seen corresponding path program 1 times [2023-04-01 23:43:05,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:43:05,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852784361] [2023-04-01 23:43:05,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:43:05,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:43:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:07,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:43:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:07,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:43:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:07,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:43:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:07,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:43:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:07,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:43:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:07,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:43:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:07,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:43:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:07,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:43:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:07,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2023-04-01 23:43:07,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:07,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1326 [2023-04-01 23:43:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:07,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1422 [2023-04-01 23:43:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:07,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:43:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:07,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1772 [2023-04-01 23:43:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:07,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:43:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:07,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:43:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:07,826 INFO L134 CoverageAnalysis]: Checked inductivity of 5393 backedges. 1535 proven. 366 refuted. 0 times theorem prover too weak. 3492 trivial. 0 not checked. [2023-04-01 23:43:07,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:43:07,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852784361] [2023-04-01 23:43:07,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852784361] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:43:07,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698609347] [2023-04-01 23:43:07,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:43:07,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:43:07,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:43:07,828 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:43:07,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-04-01 23:43:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:08,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 2930 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 23:43:08,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:43:08,722 INFO L134 CoverageAnalysis]: Checked inductivity of 5393 backedges. 3251 proven. 2 refuted. 0 times theorem prover too weak. 2140 trivial. 0 not checked. [2023-04-01 23:43:08,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:43:09,592 INFO L134 CoverageAnalysis]: Checked inductivity of 5393 backedges. 1546 proven. 350 refuted. 0 times theorem prover too weak. 3497 trivial. 0 not checked. [2023-04-01 23:43:09,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698609347] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:43:09,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:43:09,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2023-04-01 23:43:09,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112898313] [2023-04-01 23:43:09,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:43:09,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 23:43:09,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:43:09,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 23:43:09,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:43:09,598 INFO L87 Difference]: Start difference. First operand 107070 states and 110522 transitions. Second operand has 14 states, 14 states have (on average 154.07142857142858) internal successors, (2157), 12 states have internal predecessors, (2157), 9 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) [2023-04-01 23:43:15,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:43:15,157 INFO L93 Difference]: Finished difference Result 213527 states and 220550 transitions. [2023-04-01 23:43:15,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-01 23:43:15,158 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 154.07142857142858) internal successors, (2157), 12 states have internal predecessors, (2157), 9 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) Word has length 2361 [2023-04-01 23:43:15,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:43:15,364 INFO L225 Difference]: With dead ends: 213527 [2023-04-01 23:43:15,364 INFO L226 Difference]: Without dead ends: 107173 [2023-04-01 23:43:15,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4802 GetRequests, 4766 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=330, Invalid=930, Unknown=0, NotChecked=0, Total=1260 [2023-04-01 23:43:15,442 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 9489 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 6289 mSolverCounterSat, 988 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9489 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 7277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 988 IncrementalHoareTripleChecker+Valid, 6289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:43:15,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9489 Valid, 225 Invalid, 7277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [988 Valid, 6289 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-04-01 23:43:15,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107173 states. [2023-04-01 23:43:16,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107173 to 107083. [2023-04-01 23:43:16,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107083 states, 105453 states have (on average 1.01385451338511) internal successors, (106914), 105856 states have internal predecessors, (106914), 452 states have call successors, (452), 452 states have call predecessors, (452), 1177 states have return successors, (3007), 774 states have call predecessors, (3007), 451 states have call successors, (3007) [2023-04-01 23:43:17,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107083 states to 107083 states and 110373 transitions. [2023-04-01 23:43:17,035 INFO L78 Accepts]: Start accepts. Automaton has 107083 states and 110373 transitions. Word has length 2361 [2023-04-01 23:43:17,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:43:17,036 INFO L495 AbstractCegarLoop]: Abstraction has 107083 states and 110373 transitions. [2023-04-01 23:43:17,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 154.07142857142858) internal successors, (2157), 12 states have internal predecessors, (2157), 9 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) [2023-04-01 23:43:17,037 INFO L276 IsEmpty]: Start isEmpty. Operand 107083 states and 110373 transitions. [2023-04-01 23:43:17,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2401 [2023-04-01 23:43:17,158 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:43:17,159 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:43:17,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-04-01 23:43:17,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:43:17,360 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:43:17,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:43:17,360 INFO L85 PathProgramCache]: Analyzing trace with hash -945067645, now seen corresponding path program 1 times [2023-04-01 23:43:17,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:43:17,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232879077] [2023-04-01 23:43:17,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:43:17,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:43:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:21,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:43:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:21,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:43:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:21,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:43:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:21,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:43:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:21,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:43:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:21,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:43:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:21,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:43:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:21,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:43:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:22,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2023-04-01 23:43:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:22,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:43:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:22,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1461 [2023-04-01 23:43:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:22,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:43:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:22,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1811 [2023-04-01 23:43:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:23,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:43:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:23,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:43:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:23,722 INFO L134 CoverageAnalysis]: Checked inductivity of 5154 backedges. 3021 proven. 174 refuted. 0 times theorem prover too weak. 1959 trivial. 0 not checked. [2023-04-01 23:43:23,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:43:23,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232879077] [2023-04-01 23:43:23,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232879077] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:43:23,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361073370] [2023-04-01 23:43:23,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:43:23,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:43:23,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:43:23,724 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:43:23,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-04-01 23:43:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:24,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 2953 conjuncts, 38 conjunts are in the unsatisfiable core [2023-04-01 23:43:24,274 INFO L285 TraceCheckSpWp]: Computing forward predicates...