/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/Problem06_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 21:10:31,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 21:10:31,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 21:10:31,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 21:10:31,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 21:10:31,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 21:10:31,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 21:10:31,802 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 21:10:31,815 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 21:10:31,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 21:10:31,815 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 21:10:31,815 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 21:10:31,816 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 21:10:31,816 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 21:10:31,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 21:10:31,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 21:10:31,816 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 21:10:31,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 21:10:31,817 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 21:10:31,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 21:10:31,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 21:10:31,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 21:10:31,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 21:10:31,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 21:10:31,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 21:10:31,817 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 21:10:31,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 21:10:31,818 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 21:10:31,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 21:10:31,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 21:10:31,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 21:10:31,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 21:10:31,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 21:10:31,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 21:10:31,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 21:10:31,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 21:10:31,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 21:10:31,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 21:10:31,819 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 21:10:31,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 21:10:31,819 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 21:10:31,819 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 21:10:31,819 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 21:10:31,819 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 21:10:31,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 21:10:31,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 21:10:31,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 21:10:31,983 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 21:10:31,983 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 21:10:31,984 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem06_label24.c [2023-04-01 21:10:32,996 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 21:10:33,425 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 21:10:33,426 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem06_label24.c [2023-04-01 21:10:33,461 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba06fbfb1/8671717fe54f4735919c08c1e43673da/FLAG0e966b006 [2023-04-01 21:10:33,473 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba06fbfb1/8671717fe54f4735919c08c1e43673da [2023-04-01 21:10:33,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 21:10:33,476 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 21:10:33,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 21:10:33,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 21:10:33,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 21:10:33,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 09:10:33" (1/1) ... [2023-04-01 21:10:33,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74d4f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:10:33, skipping insertion in model container [2023-04-01 21:10:33,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 09:10:33" (1/1) ... [2023-04-01 21:10:33,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 21:10:33,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 21:10:34,696 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/Problem06_label24.c[333174,333187] [2023-04-01 21:10:34,712 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 21:10:34,720 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 21:10:35,268 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/Problem06_label24.c[333174,333187] [2023-04-01 21:10:35,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 21:10:35,300 INFO L208 MainTranslator]: Completed translation [2023-04-01 21:10:35,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:10:35 WrapperNode [2023-04-01 21:10:35,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 21:10:35,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 21:10:35,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 21:10:35,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 21:10:35,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:10:35" (1/1) ... [2023-04-01 21:10:35,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:10:35" (1/1) ... [2023-04-01 21:10:35,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:10:35" (1/1) ... [2023-04-01 21:10:35,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:10:35" (1/1) ... [2023-04-01 21:10:35,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:10:35" (1/1) ... [2023-04-01 21:10:35,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:10:35" (1/1) ... [2023-04-01 21:10:35,543 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:10:35" (1/1) ... [2023-04-01 21:10:35,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:10:35" (1/1) ... [2023-04-01 21:10:35,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 21:10:35,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 21:10:35,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 21:10:35,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 21:10:35,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:10:35" (1/1) ... [2023-04-01 21:10:35,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 21:10:35,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:10:35,722 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 21:10:35,749 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 21:10:35,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 21:10:35,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 21:10:35,771 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 21:10:35,771 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 21:10:35,771 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 21:10:35,771 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 21:10:35,771 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 21:10:35,771 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-04-01 21:10:35,771 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 21:10:35,771 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 21:10:35,771 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 21:10:35,771 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 21:10:35,771 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 21:10:35,771 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-04-01 21:10:35,771 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 21:10:35,772 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 21:10:35,772 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 21:10:35,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 21:10:35,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 21:10:35,772 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 21:10:35,772 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 21:10:35,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 21:10:35,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 21:10:35,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 21:10:35,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 21:10:35,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 21:10:35,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 21:10:35,923 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 21:10:35,924 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 21:10:40,007 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 21:10:40,017 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 21:10:40,017 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 21:10:40,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 09:10:40 BoogieIcfgContainer [2023-04-01 21:10:40,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 21:10:40,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 21:10:40,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 21:10:40,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 21:10:40,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 09:10:33" (1/3) ... [2023-04-01 21:10:40,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e55e2f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 09:10:40, skipping insertion in model container [2023-04-01 21:10:40,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:10:35" (2/3) ... [2023-04-01 21:10:40,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e55e2f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 09:10:40, skipping insertion in model container [2023-04-01 21:10:40,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 09:10:40" (3/3) ... [2023-04-01 21:10:40,024 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem06_label24.c [2023-04-01 21:10:40,035 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 21:10:40,035 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 21:10:40,077 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 21:10:40,081 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;@5f661cbe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 21:10:40,081 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 21:10:40,087 INFO L276 IsEmpty]: Start isEmpty. Operand has 1315 states, 1299 states have (on average 1.8498845265588915) internal successors, (2403), 1300 states have internal predecessors, (2403), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-01 21:10:40,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 968 [2023-04-01 21:10:40,115 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:10:40,116 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:40,117 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:10:40,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:10:40,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1385884462, now seen corresponding path program 1 times [2023-04-01 21:10:40,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:10:40,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010778125] [2023-04-01 21:10:40,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:10:40,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:10:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:10:44,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:10:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:10:44,893 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 21:10:44,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:10:44,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010778125] [2023-04-01 21:10:44,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010778125] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:10:44,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 21:10:44,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 21:10:44,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220913341] [2023-04-01 21:10:44,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:10:44,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 21:10:44,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:10:44,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 21:10:44,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 21:10:44,951 INFO L87 Difference]: Start difference. First operand has 1315 states, 1299 states have (on average 1.8498845265588915) internal successors, (2403), 1300 states have internal predecessors, (2403), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 5 states, 4 states have (on average 239.75) internal successors, (959), 3 states have internal predecessors, (959), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 21:10:52,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:10:52,654 INFO L93 Difference]: Finished difference Result 3767 states and 7040 transitions. [2023-04-01 21:10:52,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 21:10:52,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 239.75) internal successors, (959), 3 states have internal predecessors, (959), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 967 [2023-04-01 21:10:52,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:10:52,682 INFO L225 Difference]: With dead ends: 3767 [2023-04-01 21:10:52,682 INFO L226 Difference]: Without dead ends: 2388 [2023-04-01 21:10:52,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-04-01 21:10:52,691 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 4058 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 4855 mSolverCounterSat, 2612 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4058 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 7467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2612 IncrementalHoareTripleChecker+Valid, 4855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-04-01 21:10:52,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4058 Valid, 226 Invalid, 7467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2612 Valid, 4855 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-04-01 21:10:52,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2023-04-01 21:10:52,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2332. [2023-04-01 21:10:52,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2332 states, 2298 states have (on average 1.8224543080939948) internal successors, (4188), 2300 states have internal predecessors, (4188), 12 states have call successors, (12), 12 states have call predecessors, (12), 21 states have return successors, (31), 19 states have call predecessors, (31), 11 states have call successors, (31) [2023-04-01 21:10:52,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 4231 transitions. [2023-04-01 21:10:52,794 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 4231 transitions. Word has length 967 [2023-04-01 21:10:52,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:10:52,796 INFO L495 AbstractCegarLoop]: Abstraction has 2332 states and 4231 transitions. [2023-04-01 21:10:52,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 239.75) internal successors, (959), 3 states have internal predecessors, (959), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 21:10:52,796 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 4231 transitions. [2023-04-01 21:10:52,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 980 [2023-04-01 21:10:52,816 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:10:52,817 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:52,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 21:10:52,817 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:10:52,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:10:52,818 INFO L85 PathProgramCache]: Analyzing trace with hash 151584533, now seen corresponding path program 1 times [2023-04-01 21:10:52,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:10:52,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226820570] [2023-04-01 21:10:52,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:10:52,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:10:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:10:54,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:10:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:10:54,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:10:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:10:54,245 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:10:54,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:10:54,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226820570] [2023-04-01 21:10:54,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226820570] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:10:54,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 21:10:54,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 21:10:54,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160692830] [2023-04-01 21:10:54,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:10:54,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 21:10:54,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:10:54,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 21:10:54,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 21:10:54,252 INFO L87 Difference]: Start difference. First operand 2332 states and 4231 transitions. Second operand has 7 states, 6 states have (on average 161.5) internal successors, (969), 4 states have internal predecessors, (969), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 21:11:01,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:11:01,162 INFO L93 Difference]: Finished difference Result 6918 states and 12648 transitions. [2023-04-01 21:11:01,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 21:11:01,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 161.5) internal successors, (969), 4 states have internal predecessors, (969), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 979 [2023-04-01 21:11:01,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:11:01,214 INFO L225 Difference]: With dead ends: 6918 [2023-04-01 21:11:01,217 INFO L226 Difference]: Without dead ends: 4592 [2023-04-01 21:11:01,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 21:11:01,233 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 7010 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 6761 mSolverCounterSat, 1927 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7010 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 8688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1927 IncrementalHoareTripleChecker+Valid, 6761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-04-01 21:11:01,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7010 Valid, 662 Invalid, 8688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1927 Valid, 6761 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-04-01 21:11:01,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4592 states. [2023-04-01 21:11:01,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4592 to 4532. [2023-04-01 21:11:01,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4532 states, 4448 states have (on average 1.6380395683453237) internal successors, (7286), 4456 states have internal predecessors, (7286), 22 states have call successors, (22), 22 states have call predecessors, (22), 61 states have return successors, (141), 53 states have call predecessors, (141), 21 states have call successors, (141) [2023-04-01 21:11:01,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4532 states to 4532 states and 7449 transitions. [2023-04-01 21:11:01,359 INFO L78 Accepts]: Start accepts. Automaton has 4532 states and 7449 transitions. Word has length 979 [2023-04-01 21:11:01,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:11:01,359 INFO L495 AbstractCegarLoop]: Abstraction has 4532 states and 7449 transitions. [2023-04-01 21:11:01,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 161.5) internal successors, (969), 4 states have internal predecessors, (969), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 21:11:01,359 INFO L276 IsEmpty]: Start isEmpty. Operand 4532 states and 7449 transitions. [2023-04-01 21:11:01,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 988 [2023-04-01 21:11:01,389 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:11:01,390 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:01,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 21:11:01,390 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:11:01,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:11:01,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1946535284, now seen corresponding path program 1 times [2023-04-01 21:11:01,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:11:01,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851972838] [2023-04-01 21:11:01,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:11:01,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:11:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:11:02,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:11:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:11:02,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:11:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:11:02,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-01 21:11:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:11:03,002 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 21:11:03,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:11:03,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851972838] [2023-04-01 21:11:03,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851972838] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:11:03,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368381815] [2023-04-01 21:11:03,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:11:03,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:11:03,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:11:03,012 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 21:11:03,013 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 21:11:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:11:03,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 2343 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 21:11:03,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:11:03,918 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-01 21:11:03,918 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 21:11:03,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368381815] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:11:03,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 21:11:03,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-04-01 21:11:03,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015915567] [2023-04-01 21:11:03,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:11:03,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 21:11:03,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:11:03,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 21:11:03,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-01 21:11:03,921 INFO L87 Difference]: Start difference. First operand 4532 states and 7449 transitions. Second operand has 5 states, 5 states have (on average 193.4) internal successors, (967), 4 states have internal predecessors, (967), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 21:11:08,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:11:08,461 INFO L93 Difference]: Finished difference Result 13606 states and 22953 transitions. [2023-04-01 21:11:08,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 21:11:08,462 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 193.4) internal successors, (967), 4 states have internal predecessors, (967), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 987 [2023-04-01 21:11:08,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:11:08,492 INFO L225 Difference]: With dead ends: 13606 [2023-04-01 21:11:08,492 INFO L226 Difference]: Without dead ends: 9080 [2023-04-01 21:11:08,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 999 GetRequests, 987 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-04-01 21:11:08,500 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 4437 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 5103 mSolverCounterSat, 2244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4437 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 7347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2244 IncrementalHoareTripleChecker+Valid, 5103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-04-01 21:11:08,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4437 Valid, 852 Invalid, 7347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2244 Valid, 5103 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-04-01 21:11:08,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9080 states. [2023-04-01 21:11:08,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9080 to 8867. [2023-04-01 21:11:08,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8867 states, 8653 states have (on average 1.5436264879232635) internal successors, (13357), 8683 states have internal predecessors, (13357), 42 states have call successors, (42), 42 states have call predecessors, (42), 171 states have return successors, (603), 141 states have call predecessors, (603), 41 states have call successors, (603) [2023-04-01 21:11:08,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8867 states to 8867 states and 14002 transitions. [2023-04-01 21:11:08,689 INFO L78 Accepts]: Start accepts. Automaton has 8867 states and 14002 transitions. Word has length 987 [2023-04-01 21:11:08,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:11:08,690 INFO L495 AbstractCegarLoop]: Abstraction has 8867 states and 14002 transitions. [2023-04-01 21:11:08,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 193.4) internal successors, (967), 4 states have internal predecessors, (967), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 21:11:08,690 INFO L276 IsEmpty]: Start isEmpty. Operand 8867 states and 14002 transitions. [2023-04-01 21:11:08,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 987 [2023-04-01 21:11:08,720 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:11:08,721 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:08,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 21:11:08,930 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 21:11:08,930 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:11:08,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:11:08,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1349611757, now seen corresponding path program 1 times [2023-04-01 21:11:08,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:11:08,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002216207] [2023-04-01 21:11:08,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:11:08,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:11:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:11:10,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:11:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:11:10,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:11:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:11:10,120 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:11:10,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:11:10,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002216207] [2023-04-01 21:11:10,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002216207] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:11:10,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 21:11:10,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 21:11:10,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154318542] [2023-04-01 21:11:10,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:11:10,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 21:11:10,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:11:10,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 21:11:10,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 21:11:10,123 INFO L87 Difference]: Start difference. First operand 8867 states and 14002 transitions. Second operand has 7 states, 6 states have (on average 162.66666666666666) internal successors, (976), 4 states have internal predecessors, (976), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 21:11:18,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:11:18,335 INFO L93 Difference]: Finished difference Result 27252 states and 45263 transitions. [2023-04-01 21:11:18,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 21:11:18,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 162.66666666666666) internal successors, (976), 4 states have internal predecessors, (976), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 986 [2023-04-01 21:11:18,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:11:18,389 INFO L225 Difference]: With dead ends: 27252 [2023-04-01 21:11:18,389 INFO L226 Difference]: Without dead ends: 18391 [2023-04-01 21:11:18,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 21:11:18,405 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 4495 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 8950 mSolverCounterSat, 1475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4495 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 10425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1475 IncrementalHoareTripleChecker+Valid, 8950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-04-01 21:11:18,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4495 Valid, 673 Invalid, 10425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1475 Valid, 8950 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-04-01 21:11:18,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18391 states. [2023-04-01 21:11:18,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18391 to 17983. [2023-04-01 21:11:18,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17983 states, 17343 states have (on average 1.4387360894885544) internal successors, (24952), 17465 states have internal predecessors, (24952), 82 states have call successors, (82), 82 states have call predecessors, (82), 557 states have return successors, (2841), 435 states have call predecessors, (2841), 81 states have call successors, (2841) [2023-04-01 21:11:18,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17983 states to 17983 states and 27875 transitions. [2023-04-01 21:11:18,795 INFO L78 Accepts]: Start accepts. Automaton has 17983 states and 27875 transitions. Word has length 986 [2023-04-01 21:11:18,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:11:18,795 INFO L495 AbstractCegarLoop]: Abstraction has 17983 states and 27875 transitions. [2023-04-01 21:11:18,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 162.66666666666666) internal successors, (976), 4 states have internal predecessors, (976), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 21:11:18,796 INFO L276 IsEmpty]: Start isEmpty. Operand 17983 states and 27875 transitions. [2023-04-01 21:11:18,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1011 [2023-04-01 21:11:18,834 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:11:18,835 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:18,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 21:11:18,838 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:11:18,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:11:18,838 INFO L85 PathProgramCache]: Analyzing trace with hash -582243561, now seen corresponding path program 1 times [2023-04-01 21:11:18,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:11:18,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295159665] [2023-04-01 21:11:18,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:11:18,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:11:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:11:20,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:11:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:11:20,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:11:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:11:20,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-01 21:11:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:11:20,359 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 37 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 21:11:20,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:11:20,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295159665] [2023-04-01 21:11:20,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295159665] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:11:20,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854432343] [2023-04-01 21:11:20,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:11:20,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:11:20,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:11:20,360 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 21:11:20,362 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 21:11:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:11:20,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 2346 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 21:11:20,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:11:20,953 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-04-01 21:11:20,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 21:11:20,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854432343] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:11:20,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 21:11:20,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2023-04-01 21:11:20,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127308988] [2023-04-01 21:11:20,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:11:20,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 21:11:20,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:11:20,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 21:11:20,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-04-01 21:11:20,956 INFO L87 Difference]: Start difference. First operand 17983 states and 27875 transitions. Second operand has 5 states, 5 states have (on average 195.8) internal successors, (979), 4 states have internal predecessors, (979), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 21:11:25,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:11:25,626 INFO L93 Difference]: Finished difference Result 55597 states and 95544 transitions. [2023-04-01 21:11:25,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 21:11:25,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 195.8) internal successors, (979), 4 states have internal predecessors, (979), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 1010 [2023-04-01 21:11:25,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:11:25,772 INFO L225 Difference]: With dead ends: 55597 [2023-04-01 21:11:25,772 INFO L226 Difference]: Without dead ends: 37620 [2023-04-01 21:11:25,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1022 GetRequests, 1011 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-04-01 21:11:25,823 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 4117 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 5795 mSolverCounterSat, 1792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4117 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 7587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1792 IncrementalHoareTripleChecker+Valid, 5795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-04-01 21:11:25,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4117 Valid, 1047 Invalid, 7587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1792 Valid, 5795 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-04-01 21:11:25,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37620 states. [2023-04-01 21:11:26,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37620 to 36752. [2023-04-01 21:11:26,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36752 states, 35025 states have (on average 1.3333333333333333) internal successors, (46700), 35438 states have internal predecessors, (46700), 162 states have call successors, (162), 162 states have call predecessors, (162), 1564 states have return successors, (10865), 1151 states have call predecessors, (10865), 161 states have call successors, (10865) [2023-04-01 21:11:26,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36752 states to 36752 states and 57727 transitions. [2023-04-01 21:11:26,866 INFO L78 Accepts]: Start accepts. Automaton has 36752 states and 57727 transitions. Word has length 1010 [2023-04-01 21:11:26,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:11:26,867 INFO L495 AbstractCegarLoop]: Abstraction has 36752 states and 57727 transitions. [2023-04-01 21:11:26,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 195.8) internal successors, (979), 4 states have internal predecessors, (979), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 21:11:26,868 INFO L276 IsEmpty]: Start isEmpty. Operand 36752 states and 57727 transitions. [2023-04-01 21:11:26,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1047 [2023-04-01 21:11:26,963 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:11:26,963 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:26,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 21:11:27,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:11:27,173 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:11:27,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:11:27,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1201554408, now seen corresponding path program 1 times [2023-04-01 21:11:27,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:11:27,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153602004] [2023-04-01 21:11:27,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:11:27,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:11:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:11:30,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:11:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:11:30,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:11:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:11:30,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-01 21:11:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:11:30,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-01 21:11:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:11:30,995 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 70 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-04-01 21:11:30,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:11:30,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153602004] [2023-04-01 21:11:30,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153602004] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:11:30,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031677126] [2023-04-01 21:11:30,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:11:30,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:11:30,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:11:31,013 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 21:11:31,087 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 21:11:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:11:31,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 2541 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-01 21:11:31,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:11:32,315 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-04-01 21:11:32,315 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 21:11:32,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031677126] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:11:32,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 21:11:32,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-04-01 21:11:32,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538411640] [2023-04-01 21:11:32,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:11:32,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 21:11:32,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:11:32,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 21:11:32,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 21:11:32,319 INFO L87 Difference]: Start difference. First operand 36752 states and 57727 transitions. Second operand has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 21:11:35,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:11:35,069 INFO L93 Difference]: Finished difference Result 90742 states and 145519 transitions. [2023-04-01 21:11:35,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 21:11:35,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 1046 [2023-04-01 21:11:35,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:11:35,375 INFO L225 Difference]: With dead ends: 90742 [2023-04-01 21:11:35,375 INFO L226 Difference]: Without dead ends: 53996 [2023-04-01 21:11:35,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1057 GetRequests, 1050 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 21:11:35,441 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 449 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 3304 mSolverCounterSat, 669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 3973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 669 IncrementalHoareTripleChecker+Valid, 3304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-01 21:11:35,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 893 Invalid, 3973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [669 Valid, 3304 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-01 21:11:35,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53996 states. [2023-04-01 21:11:36,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53996 to 53930. [2023-04-01 21:11:36,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53930 states, 51687 states have (on average 1.2876158415075358) internal successors, (66553), 52225 states have internal predecessors, (66553), 242 states have call successors, (242), 242 states have call predecessors, (242), 2000 states have return successors, (16963), 1462 states have call predecessors, (16963), 241 states have call successors, (16963) [2023-04-01 21:11:36,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53930 states to 53930 states and 83758 transitions. [2023-04-01 21:11:36,695 INFO L78 Accepts]: Start accepts. Automaton has 53930 states and 83758 transitions. Word has length 1046 [2023-04-01 21:11:36,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:11:36,696 INFO L495 AbstractCegarLoop]: Abstraction has 53930 states and 83758 transitions. [2023-04-01 21:11:36,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 21:11:36,697 INFO L276 IsEmpty]: Start isEmpty. Operand 53930 states and 83758 transitions. [2023-04-01 21:11:36,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1133 [2023-04-01 21:11:36,804 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:11:36,805 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:36,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-01 21:11:37,013 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 21:11:37,014 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:11:37,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:11:37,014 INFO L85 PathProgramCache]: Analyzing trace with hash -516489595, now seen corresponding path program 1 times [2023-04-01 21:11:37,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:11:37,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313439734] [2023-04-01 21:11:37,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:11:37,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:11:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:11:40,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:11:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:11:40,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:11:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:11:40,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-01 21:11:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:11:40,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-01 21:11:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:11:40,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-01 21:11:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:11:40,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-01 21:11:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:11:40,854 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 150 proven. 32 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-04-01 21:11:40,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:11:40,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313439734] [2023-04-01 21:11:40,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313439734] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:11:40,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806910018] [2023-04-01 21:11:40,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:11:40,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:11:40,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:11:40,871 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 21:11:40,872 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 21:11:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:11:41,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 2936 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 21:11:41,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:11:41,491 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-04-01 21:11:41,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 21:11:41,616 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 193 proven. 24 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-04-01 21:11:41,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806910018] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 21:11:41,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 21:11:41,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2023-04-01 21:11:41,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259682808] [2023-04-01 21:11:41,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 21:11:41,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 21:11:41,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:11:41,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 21:11:41,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-04-01 21:11:41,620 INFO L87 Difference]: Start difference. First operand 53930 states and 83758 transitions. Second operand has 13 states, 13 states have (on average 81.61538461538461) internal successors, (1061), 11 states have internal predecessors, (1061), 4 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 21:12:04,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:12:04,460 INFO L93 Difference]: Finished difference Result 188511 states and 323182 transitions. [2023-04-01 21:12:04,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-04-01 21:12:04,461 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 81.61538461538461) internal successors, (1061), 11 states have internal predecessors, (1061), 4 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 1132 [2023-04-01 21:12:04,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:12:04,971 INFO L225 Difference]: With dead ends: 188511 [2023-04-01 21:12:04,971 INFO L226 Difference]: Without dead ends: 134587 [2023-04-01 21:12:05,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2352 GetRequests, 2301 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=484, Invalid=2168, Unknown=0, NotChecked=0, Total=2652 [2023-04-01 21:12:05,072 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 26289 mSDsluCounter, 1995 mSDsCounter, 0 mSdLazyCounter, 30527 mSolverCounterSat, 3993 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26291 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 34520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3993 IncrementalHoareTripleChecker+Valid, 30527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2023-04-01 21:12:05,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26291 Valid, 2358 Invalid, 34520 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3993 Valid, 30527 Invalid, 0 Unknown, 0 Unchecked, 19.1s Time] [2023-04-01 21:12:05,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134587 states. [2023-04-01 21:12:08,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134587 to 124150. [2023-04-01 21:12:08,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124150 states, 119033 states have (on average 1.222988582997992) internal successors, (145576), 120323 states have internal predecessors, (145576), 593 states have call successors, (593), 557 states have call predecessors, (593), 4523 states have return successors, (43351), 3269 states have call predecessors, (43351), 592 states have call successors, (43351) [2023-04-01 21:12:09,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124150 states to 124150 states and 189520 transitions. [2023-04-01 21:12:09,592 INFO L78 Accepts]: Start accepts. Automaton has 124150 states and 189520 transitions. Word has length 1132 [2023-04-01 21:12:09,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:12:09,592 INFO L495 AbstractCegarLoop]: Abstraction has 124150 states and 189520 transitions. [2023-04-01 21:12:09,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 81.61538461538461) internal successors, (1061), 11 states have internal predecessors, (1061), 4 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 21:12:09,593 INFO L276 IsEmpty]: Start isEmpty. Operand 124150 states and 189520 transitions. [2023-04-01 21:12:10,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1153 [2023-04-01 21:12:10,151 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:12:10,151 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:10,175 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 21:12:10,352 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 21:12:10,352 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:12:10,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:12:10,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1874466311, now seen corresponding path program 1 times [2023-04-01 21:12:10,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:12:10,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105843130] [2023-04-01 21:12:10,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:12:10,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:12:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:12:13,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:12:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:12:13,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:12:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:12:13,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-04-01 21:12:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:12:13,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-01 21:12:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:12:13,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-04-01 21:12:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:12:13,823 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 182 proven. 79 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 21:12:13,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:12:13,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105843130] [2023-04-01 21:12:13,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105843130] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:12:13,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897896501] [2023-04-01 21:12:13,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:12:13,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:12:13,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:12:13,825 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 21:12:13,853 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 21:12:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:12:14,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 2800 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-01 21:12:14,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:12:15,434 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-04-01 21:12:15,435 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 21:12:15,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897896501] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:12:15,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 21:12:15,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2023-04-01 21:12:15,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976950315] [2023-04-01 21:12:15,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:12:15,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 21:12:15,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:12:15,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 21:12:15,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 21:12:15,437 INFO L87 Difference]: Start difference. First operand 124150 states and 189520 transitions. Second operand has 3 states, 3 states have (on average 349.3333333333333) internal successors, (1048), 3 states have internal predecessors, (1048), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 21:12:21,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:12:21,197 INFO L93 Difference]: Finished difference Result 359901 states and 564966 transitions. [2023-04-01 21:12:21,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 21:12:21,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 349.3333333333333) internal successors, (1048), 3 states have internal predecessors, (1048), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 1152 [2023-04-01 21:12:21,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:12:22,288 INFO L225 Difference]: With dead ends: 359901 [2023-04-01 21:12:22,288 INFO L226 Difference]: Without dead ends: 235757 [2023-04-01 21:12:22,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1167 GetRequests, 1157 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 21:12:22,431 INFO L413 NwaCegarLoop]: 2353 mSDtfsCounter, 492 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 3662 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 2624 SdHoareTripleChecker+Invalid, 4149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 3662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-01 21:12:22,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 2624 Invalid, 4149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 3662 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-01 21:12:22,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235757 states. [2023-04-01 21:12:27,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235757 to 235598. [2023-04-01 21:12:27,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235598 states, 227642 states have (on average 1.1916561970110964) internal successors, (271271), 229607 states have internal predecessors, (271271), 1141 states have call successors, (1141), 1082 states have call predecessors, (1141), 6814 states have return successors, (80645), 4908 states have call predecessors, (80645), 1140 states have call successors, (80645) [2023-04-01 21:12:28,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235598 states to 235598 states and 353057 transitions. [2023-04-01 21:12:28,770 INFO L78 Accepts]: Start accepts. Automaton has 235598 states and 353057 transitions. Word has length 1152 [2023-04-01 21:12:28,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:12:28,771 INFO L495 AbstractCegarLoop]: Abstraction has 235598 states and 353057 transitions. [2023-04-01 21:12:28,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 349.3333333333333) internal successors, (1048), 3 states have internal predecessors, (1048), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 21:12:28,772 INFO L276 IsEmpty]: Start isEmpty. Operand 235598 states and 353057 transitions. [2023-04-01 21:12:29,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1184 [2023-04-01 21:12:29,543 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:12:29,543 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:29,553 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 21:12:29,749 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 21:12:29,750 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:12:29,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:12:29,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1139013881, now seen corresponding path program 1 times [2023-04-01 21:12:29,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:12:29,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608269948] [2023-04-01 21:12:29,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:12:29,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:12:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:12:32,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:12:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:12:32,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:12:32,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:12:32,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-01 21:12:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:12:32,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-01 21:12:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:12:32,881 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 207 proven. 44 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-04-01 21:12:32,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:12:32,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608269948] [2023-04-01 21:12:32,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608269948] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:12:32,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889552362] [2023-04-01 21:12:32,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:12:32,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:12:32,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:12:32,883 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 21:12:32,904 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 21:12:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:12:33,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 2682 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-01 21:12:33,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:12:34,478 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-04-01 21:12:34,478 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 21:12:34,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889552362] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:12:34,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 21:12:34,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-04-01 21:12:34,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380220126] [2023-04-01 21:12:34,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:12:34,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 21:12:34,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:12:34,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 21:12:34,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 21:12:34,481 INFO L87 Difference]: Start difference. First operand 235598 states and 353057 transitions. Second operand has 3 states, 3 states have (on average 369.6666666666667) internal successors, (1109), 3 states have internal predecessors, (1109), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 21:12:40,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:12:40,959 INFO L93 Difference]: Finished difference Result 471195 states and 706603 transitions. [2023-04-01 21:12:40,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 21:12:40,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 369.6666666666667) internal successors, (1109), 3 states have internal predecessors, (1109), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 1183 [2023-04-01 21:12:40,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:12:41,906 INFO L225 Difference]: With dead ends: 471195 [2023-04-01 21:12:41,906 INFO L226 Difference]: Without dead ends: 235603 [2023-04-01 21:12:42,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1194 GetRequests, 1187 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 21:12:42,241 INFO L413 NwaCegarLoop]: 1941 mSDtfsCounter, 418 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 3532 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 2117 SdHoareTripleChecker+Invalid, 3872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 3532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-04-01 21:12:42,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 2117 Invalid, 3872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 3532 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-04-01 21:12:42,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235603 states. [2023-04-01 21:12:47,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235603 to 235384. [2023-04-01 21:12:47,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235384 states, 227512 states have (on average 1.159468511551039) internal successors, (263793), 229439 states have internal predecessors, (263793), 1141 states have call successors, (1141), 1082 states have call predecessors, (1141), 6730 states have return successors, (67557), 4862 states have call predecessors, (67557), 1140 states have call successors, (67557) [2023-04-01 21:12:48,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235384 states to 235384 states and 332491 transitions. [2023-04-01 21:12:48,612 INFO L78 Accepts]: Start accepts. Automaton has 235384 states and 332491 transitions. Word has length 1183 [2023-04-01 21:12:48,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:12:48,613 INFO L495 AbstractCegarLoop]: Abstraction has 235384 states and 332491 transitions. [2023-04-01 21:12:48,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 369.6666666666667) internal successors, (1109), 3 states have internal predecessors, (1109), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 21:12:48,613 INFO L276 IsEmpty]: Start isEmpty. Operand 235384 states and 332491 transitions. [2023-04-01 21:12:49,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1249 [2023-04-01 21:12:49,415 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:12:49,415 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:49,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 21:12:49,626 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 21:12:49,626 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:12:49,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:12:49,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1006326642, now seen corresponding path program 1 times [2023-04-01 21:12:49,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:12:49,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963057282] [2023-04-01 21:12:49,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:12:49,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:12:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:12:52,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:12:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:12:53,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:12:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:12:53,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-01 21:12:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:12:53,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-01 21:12:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:12:53,231 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 270 proven. 44 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-04-01 21:12:53,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:12:53,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963057282] [2023-04-01 21:12:53,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963057282] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:12:53,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310821336] [2023-04-01 21:12:53,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:12:53,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:12:53,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:12:53,233 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 21:12:53,235 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 21:12:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:12:53,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 2738 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 21:12:53,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:12:54,114 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 339 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-01 21:12:54,115 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 21:12:54,785 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 339 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-01 21:12:54,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310821336] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 21:12:54,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 21:12:54,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2023-04-01 21:12:54,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927131025] [2023-04-01 21:12:54,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 21:12:54,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 21:12:54,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:12:54,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 21:12:54,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-04-01 21:12:54,789 INFO L87 Difference]: Start difference. First operand 235384 states and 332491 transitions. Second operand has 13 states, 13 states have (on average 124.92307692307692) internal successors, (1624), 11 states have internal predecessors, (1624), 5 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 21:13:44,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:13:44,466 INFO L93 Difference]: Finished difference Result 1106071 states and 1893991 transitions. [2023-04-01 21:13:44,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-04-01 21:13:44,467 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 124.92307692307692) internal successors, (1624), 11 states have internal predecessors, (1624), 5 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 1248 [2023-04-01 21:13:44,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:13:49,949 INFO L225 Difference]: With dead ends: 1106071 [2023-04-01 21:13:49,950 INFO L226 Difference]: Without dead ends: 870693 [2023-04-01 21:13:50,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2661 GetRequests, 2569 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3046 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1316, Invalid=7240, Unknown=0, NotChecked=0, Total=8556 [2023-04-01 21:13:50,646 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 13468 mSDsluCounter, 2885 mSDsCounter, 0 mSdLazyCounter, 44295 mSolverCounterSat, 4436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13470 SdHoareTripleChecker+Valid, 3383 SdHoareTripleChecker+Invalid, 48731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4436 IncrementalHoareTripleChecker+Valid, 44295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.3s IncrementalHoareTripleChecker+Time [2023-04-01 21:13:50,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13470 Valid, 3383 Invalid, 48731 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4436 Valid, 44295 Invalid, 0 Unknown, 0 Unchecked, 30.3s Time] [2023-04-01 21:13:51,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870693 states.