/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/Problem16_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 23:35:13,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 23:35:13,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 23:35:13,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-30 23:35:13,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-30 23:35:13,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-30 23:35:13,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-30 23:35:13,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-30 23:35:13,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-30 23:35:13,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-30 23:35:13,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-30 23:35:13,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-30 23:35:13,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-30 23:35:13,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-30 23:35:13,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-30 23:35:13,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-30 23:35:13,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-30 23:35:13,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-30 23:35:13,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-30 23:35:13,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-30 23:35:13,824 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 [2023-03-30 23:35:13,848 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 23:35:13,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 23:35:13,849 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 23:35:13,849 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 23:35:13,850 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 23:35:13,850 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 23:35:13,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 23:35:13,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 23:35:13,850 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 23:35:13,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 23:35:13,851 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 23:35:13,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 23:35:13,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 23:35:13,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 23:35:13,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 23:35:13,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 23:35:13,851 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 23:35:13,852 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 23:35:13,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 23:35:13,852 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 23:35:13,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 23:35:13,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 23:35:13,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 23:35:13,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 23:35:13,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:35:13,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 23:35:13,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 23:35:13,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 23:35:13,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 23:35:13,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 23:35:13,853 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 23:35:13,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 23:35:13,853 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 23:35:13,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 23:35:13,853 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 23:35:13,853 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 23:35:14,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 23:35:14,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 23:35:14,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 23:35:14,060 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 23:35:14,060 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 23:35:14,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem16_label09.c [2023-03-30 23:35:15,092 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 23:35:15,299 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 23:35:15,299 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label09.c [2023-03-30 23:35:15,312 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69ed99509/57d6cdb5f46d4111b336b775aa594133/FLAGada6e85e5 [2023-03-30 23:35:15,322 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69ed99509/57d6cdb5f46d4111b336b775aa594133 [2023-03-30 23:35:15,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 23:35:15,325 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 23:35:15,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 23:35:15,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 23:35:15,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 23:35:15,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:35:15" (1/1) ... [2023-03-30 23:35:15,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@635fe020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:35:15, skipping insertion in model container [2023-03-30 23:35:15,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:35:15" (1/1) ... [2023-03-30 23:35:15,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 23:35:15,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 23:35:15,541 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/Problem16_label09.c[5013,5026] [2023-03-30 23:35:15,752 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:35:15,760 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 23:35:15,774 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/Problem16_label09.c[5013,5026] [2023-03-30 23:35:15,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:35:15,958 INFO L208 MainTranslator]: Completed translation [2023-03-30 23:35:15,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:35:15 WrapperNode [2023-03-30 23:35:15,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 23:35:15,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 23:35:15,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 23:35:15,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 23:35:15,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:35:15" (1/1) ... [2023-03-30 23:35:15,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:35:15" (1/1) ... [2023-03-30 23:35:16,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:35:15" (1/1) ... [2023-03-30 23:35:16,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:35:15" (1/1) ... [2023-03-30 23:35:16,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:35:15" (1/1) ... [2023-03-30 23:35:16,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:35:15" (1/1) ... [2023-03-30 23:35:16,103 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:35:15" (1/1) ... [2023-03-30 23:35:16,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:35:15" (1/1) ... [2023-03-30 23:35:16,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 23:35:16,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 23:35:16,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 23:35:16,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 23:35:16,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:35:15" (1/1) ... [2023-03-30 23:35:16,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:35:16,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:35:16,174 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) [2023-03-30 23:35:16,192 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 [2023-03-30 23:35:16,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 23:35:16,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 23:35:16,205 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 23:35:16,205 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-30 23:35:16,205 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-03-30 23:35:16,205 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 23:35:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-30 23:35:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-03-30 23:35:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 23:35:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 23:35:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 23:35:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 23:35:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 23:35:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-30 23:35:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 23:35:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 23:35:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 23:35:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 23:35:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 23:35:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 23:35:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 23:35:16,255 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 23:35:16,256 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 23:35:17,637 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 23:35:17,650 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 23:35:17,651 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-30 23:35:17,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:35:17 BoogieIcfgContainer [2023-03-30 23:35:17,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 23:35:17,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 23:35:17,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 23:35:17,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 23:35:17,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 11:35:15" (1/3) ... [2023-03-30 23:35:17,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5d1940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:35:17, skipping insertion in model container [2023-03-30 23:35:17,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:35:15" (2/3) ... [2023-03-30 23:35:17,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5d1940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:35:17, skipping insertion in model container [2023-03-30 23:35:17,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:35:17" (3/3) ... [2023-03-30 23:35:17,660 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label09.c [2023-03-30 23:35:17,672 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 23:35:17,672 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 23:35:17,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 23:35:17,727 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;@2cea1e1e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 23:35:17,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 23:35:17,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 409 states, 399 states have (on average 1.8245614035087718) internal successors, (728), 400 states have internal predecessors, (728), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 23:35:17,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-03-30 23:35:17,740 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:35:17,740 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] [2023-03-30 23:35:17,741 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:35:17,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:35:17,745 INFO L85 PathProgramCache]: Analyzing trace with hash 752719996, now seen corresponding path program 1 times [2023-03-30 23:35:17,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:35:17,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438565722] [2023-03-30 23:35:17,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:17,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:35:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:18,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:35:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:18,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:35:18,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:35:18,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438565722] [2023-03-30 23:35:18,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438565722] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:35:18,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:35:18,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-30 23:35:18,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969054544] [2023-03-30 23:35:18,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:35:18,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:35:18,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:35:18,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:35:18,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:35:18,251 INFO L87 Difference]: Start difference. First operand has 409 states, 399 states have (on average 1.8245614035087718) internal successors, (728), 400 states have internal predecessors, (728), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:35:21,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:35:21,032 INFO L93 Difference]: Finished difference Result 1515 states and 2850 transitions. [2023-03-30 23:35:21,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 23:35:21,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2023-03-30 23:35:21,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:35:21,060 INFO L225 Difference]: With dead ends: 1515 [2023-03-30 23:35:21,061 INFO L226 Difference]: Without dead ends: 1038 [2023-03-30 23:35:21,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:35:21,068 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 2264 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 1750 mSolverCounterSat, 1189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2264 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 2939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1189 IncrementalHoareTripleChecker+Valid, 1750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:35:21,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2264 Valid, 41 Invalid, 2939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1189 Valid, 1750 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-03-30 23:35:21,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2023-03-30 23:35:21,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1031. [2023-03-30 23:35:21,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 1010 states have (on average 1.5712871287128714) internal successors, (1587), 1013 states have internal predecessors, (1587), 8 states have call successors, (8), 8 states have call predecessors, (8), 12 states have return successors, (24), 9 states have call predecessors, (24), 7 states have call successors, (24) [2023-03-30 23:35:21,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1619 transitions. [2023-03-30 23:35:21,165 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1619 transitions. Word has length 53 [2023-03-30 23:35:21,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:35:21,166 INFO L495 AbstractCegarLoop]: Abstraction has 1031 states and 1619 transitions. [2023-03-30 23:35:21,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:35:21,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1619 transitions. [2023-03-30 23:35:21,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-03-30 23:35:21,174 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:35:21,175 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-03-30 23:35:21,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 23:35:21,175 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:35:21,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:35:21,176 INFO L85 PathProgramCache]: Analyzing trace with hash 90371051, now seen corresponding path program 1 times [2023-03-30 23:35:21,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:35:21,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105616885] [2023-03-30 23:35:21,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:21,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:35:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:21,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:35:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:21,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:35:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:21,584 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:35:21,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:35:21,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105616885] [2023-03-30 23:35:21,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105616885] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:35:21,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:35:21,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-30 23:35:21,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586155029] [2023-03-30 23:35:21,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:35:21,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 23:35:21,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:35:21,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 23:35:21,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:35:21,590 INFO L87 Difference]: Start difference. First operand 1031 states and 1619 transitions. Second operand has 8 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:35:24,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:35:24,259 INFO L93 Difference]: Finished difference Result 4166 states and 6714 transitions. [2023-03-30 23:35:24,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-30 23:35:24,260 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 136 [2023-03-30 23:35:24,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:35:24,273 INFO L225 Difference]: With dead ends: 4166 [2023-03-30 23:35:24,273 INFO L226 Difference]: Without dead ends: 3141 [2023-03-30 23:35:24,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-03-30 23:35:24,278 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2590 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 2699 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2590 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 3174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 2699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-03-30 23:35:24,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2590 Valid, 96 Invalid, 3174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 2699 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-03-30 23:35:24,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3141 states. [2023-03-30 23:35:24,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3141 to 3114. [2023-03-30 23:35:24,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3114 states, 3043 states have (on average 1.422280644101216) internal successors, (4328), 3063 states have internal predecessors, (4328), 20 states have call successors, (20), 20 states have call predecessors, (20), 50 states have return successors, (180), 30 states have call predecessors, (180), 19 states have call successors, (180) [2023-03-30 23:35:24,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3114 states to 3114 states and 4528 transitions. [2023-03-30 23:35:24,381 INFO L78 Accepts]: Start accepts. Automaton has 3114 states and 4528 transitions. Word has length 136 [2023-03-30 23:35:24,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:35:24,382 INFO L495 AbstractCegarLoop]: Abstraction has 3114 states and 4528 transitions. [2023-03-30 23:35:24,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:35:24,383 INFO L276 IsEmpty]: Start isEmpty. Operand 3114 states and 4528 transitions. [2023-03-30 23:35:24,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-03-30 23:35:24,390 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:35:24,390 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:35:24,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-30 23:35:24,390 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:35:24,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:35:24,391 INFO L85 PathProgramCache]: Analyzing trace with hash 889195916, now seen corresponding path program 1 times [2023-03-30 23:35:24,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:35:24,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867413193] [2023-03-30 23:35:24,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:24,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:35:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:24,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:35:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:24,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:35:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:24,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-03-30 23:35:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:24,815 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-30 23:35:24,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:35:24,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867413193] [2023-03-30 23:35:24,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867413193] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:35:24,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882509678] [2023-03-30 23:35:24,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:24,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:35:24,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:35:24,857 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) [2023-03-30 23:35:24,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-30 23:35:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:24,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:35:24,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:35:25,204 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:35:25,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:35:25,462 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:35:25,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882509678] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:35:25,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:35:25,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-03-30 23:35:25,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293451745] [2023-03-30 23:35:25,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:35:25,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-30 23:35:25,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:35:25,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-30 23:35:25,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:35:25,469 INFO L87 Difference]: Start difference. First operand 3114 states and 4528 transitions. Second operand has 12 states, 12 states have (on average 32.0) internal successors, (384), 10 states have internal predecessors, (384), 4 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-03-30 23:35:28,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:35:28,263 INFO L93 Difference]: Finished difference Result 8299 states and 12428 transitions. [2023-03-30 23:35:28,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-30 23:35:28,264 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 32.0) internal successors, (384), 10 states have internal predecessors, (384), 4 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 227 [2023-03-30 23:35:28,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:35:28,282 INFO L225 Difference]: With dead ends: 8299 [2023-03-30 23:35:28,282 INFO L226 Difference]: Without dead ends: 5191 [2023-03-30 23:35:28,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 456 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2023-03-30 23:35:28,288 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1699 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 3513 mSolverCounterSat, 688 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 4201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 688 IncrementalHoareTripleChecker+Valid, 3513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-03-30 23:35:28,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1699 Valid, 80 Invalid, 4201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [688 Valid, 3513 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-03-30 23:35:28,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5191 states. [2023-03-30 23:35:28,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5191 to 3804. [2023-03-30 23:35:28,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3804 states, 3717 states have (on average 1.4057035243475922) internal successors, (5225), 3745 states have internal predecessors, (5225), 24 states have call successors, (24), 24 states have call predecessors, (24), 62 states have return successors, (238), 34 states have call predecessors, (238), 23 states have call successors, (238) [2023-03-30 23:35:28,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3804 states to 3804 states and 5487 transitions. [2023-03-30 23:35:28,402 INFO L78 Accepts]: Start accepts. Automaton has 3804 states and 5487 transitions. Word has length 227 [2023-03-30 23:35:28,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:35:28,403 INFO L495 AbstractCegarLoop]: Abstraction has 3804 states and 5487 transitions. [2023-03-30 23:35:28,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 32.0) internal successors, (384), 10 states have internal predecessors, (384), 4 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-03-30 23:35:28,404 INFO L276 IsEmpty]: Start isEmpty. Operand 3804 states and 5487 transitions. [2023-03-30 23:35:28,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-03-30 23:35:28,406 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:35:28,406 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:35:28,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-03-30 23:35:28,611 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 [2023-03-30 23:35:28,611 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:35:28,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:35:28,612 INFO L85 PathProgramCache]: Analyzing trace with hash 355683675, now seen corresponding path program 1 times [2023-03-30 23:35:28,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:35:28,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30264705] [2023-03-30 23:35:28,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:28,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:35:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:28,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:35:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:28,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:35:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:28,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-03-30 23:35:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:28,954 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-30 23:35:28,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:35:28,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30264705] [2023-03-30 23:35:28,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30264705] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:35:28,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867440004] [2023-03-30 23:35:28,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:28,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:35:28,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:35:28,957 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) [2023-03-30 23:35:28,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-30 23:35:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:29,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:35:29,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:35:29,271 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:35:29,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:35:29,576 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:35:29,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867440004] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:35:29,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:35:29,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 12 [2023-03-30 23:35:29,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545671407] [2023-03-30 23:35:29,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:35:29,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-30 23:35:29,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:35:29,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-30 23:35:29,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:35:29,579 INFO L87 Difference]: Start difference. First operand 3804 states and 5487 transitions. Second operand has 12 states, 12 states have (on average 40.666666666666664) internal successors, (488), 10 states have internal predecessors, (488), 4 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-03-30 23:35:32,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:35:32,384 INFO L93 Difference]: Finished difference Result 9366 states and 13390 transitions. [2023-03-30 23:35:32,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-03-30 23:35:32,385 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 40.666666666666664) internal successors, (488), 10 states have internal predecessors, (488), 4 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 268 [2023-03-30 23:35:32,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:35:32,403 INFO L225 Difference]: With dead ends: 9366 [2023-03-30 23:35:32,403 INFO L226 Difference]: Without dead ends: 5568 [2023-03-30 23:35:32,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 540 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-03-30 23:35:32,411 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 3548 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 3300 mSolverCounterSat, 881 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3548 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 4181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 881 IncrementalHoareTripleChecker+Valid, 3300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:35:32,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3548 Valid, 102 Invalid, 4181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [881 Valid, 3300 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-03-30 23:35:32,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5568 states. [2023-03-30 23:35:32,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5568 to 4510. [2023-03-30 23:35:32,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4510 states, 4401 states have (on average 1.2717564189956827) internal successors, (5597), 4439 states have internal predecessors, (5597), 28 states have call successors, (28), 28 states have call predecessors, (28), 80 states have return successors, (293), 42 states have call predecessors, (293), 27 states have call successors, (293) [2023-03-30 23:35:32,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 5918 transitions. [2023-03-30 23:35:32,510 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 5918 transitions. Word has length 268 [2023-03-30 23:35:32,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:35:32,511 INFO L495 AbstractCegarLoop]: Abstraction has 4510 states and 5918 transitions. [2023-03-30 23:35:32,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 40.666666666666664) internal successors, (488), 10 states have internal predecessors, (488), 4 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-03-30 23:35:32,512 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 5918 transitions. [2023-03-30 23:35:32,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2023-03-30 23:35:32,516 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:35:32,516 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:35:32,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-30 23:35:32,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-03-30 23:35:32,722 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:35:32,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:35:32,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1958130832, now seen corresponding path program 1 times [2023-03-30 23:35:32,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:35:32,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084711689] [2023-03-30 23:35:32,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:32,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:35:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:33,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:35:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:33,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:35:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:33,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-03-30 23:35:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:33,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-03-30 23:35:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:33,748 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 239 proven. 114 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-03-30 23:35:33,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:35:33,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084711689] [2023-03-30 23:35:33,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084711689] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:35:33,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103530703] [2023-03-30 23:35:33,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:33,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:35:33,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:35:33,765 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) [2023-03-30 23:35:33,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-30 23:35:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:33,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:35:33,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:35:34,072 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 354 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-03-30 23:35:34,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:35:34,386 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 354 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-03-30 23:35:34,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103530703] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:35:34,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:35:34,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-03-30 23:35:34,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288639513] [2023-03-30 23:35:34,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:35:34,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-03-30 23:35:34,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:35:34,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-03-30 23:35:34,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-03-30 23:35:34,389 INFO L87 Difference]: Start difference. First operand 4510 states and 5918 transitions. Second operand has 14 states, 14 states have (on average 38.714285714285715) internal successors, (542), 12 states have internal predecessors, (542), 6 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-03-30 23:35:40,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:35:40,356 INFO L93 Difference]: Finished difference Result 12504 states and 16895 transitions. [2023-03-30 23:35:40,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-03-30 23:35:40,356 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 38.714285714285715) internal successors, (542), 12 states have internal predecessors, (542), 6 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 397 [2023-03-30 23:35:40,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:35:40,380 INFO L225 Difference]: With dead ends: 12504 [2023-03-30 23:35:40,380 INFO L226 Difference]: Without dead ends: 8000 [2023-03-30 23:35:40,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 885 GetRequests, 833 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=623, Invalid=2133, Unknown=0, NotChecked=0, Total=2756 [2023-03-30 23:35:40,389 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 8559 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 5393 mSolverCounterSat, 3611 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8576 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 9004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3611 IncrementalHoareTripleChecker+Valid, 5393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-03-30 23:35:40,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8576 Valid, 122 Invalid, 9004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3611 Valid, 5393 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-03-30 23:35:40,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8000 states. [2023-03-30 23:35:40,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8000 to 7630. [2023-03-30 23:35:40,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7630 states, 7445 states have (on average 1.2380120886501007) internal successors, (9217), 7516 states have internal predecessors, (9217), 46 states have call successors, (46), 46 states have call predecessors, (46), 138 states have return successors, (729), 67 states have call predecessors, (729), 45 states have call successors, (729) [2023-03-30 23:35:40,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7630 states to 7630 states and 9992 transitions. [2023-03-30 23:35:40,599 INFO L78 Accepts]: Start accepts. Automaton has 7630 states and 9992 transitions. Word has length 397 [2023-03-30 23:35:40,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:35:40,599 INFO L495 AbstractCegarLoop]: Abstraction has 7630 states and 9992 transitions. [2023-03-30 23:35:40,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 38.714285714285715) internal successors, (542), 12 states have internal predecessors, (542), 6 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-03-30 23:35:40,600 INFO L276 IsEmpty]: Start isEmpty. Operand 7630 states and 9992 transitions. [2023-03-30 23:35:40,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2023-03-30 23:35:40,606 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:35:40,606 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-03-30 23:35:40,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-30 23:35:40,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:35:40,813 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:35:40,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:35:40,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1764039164, now seen corresponding path program 1 times [2023-03-30 23:35:40,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:35:40,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148723985] [2023-03-30 23:35:40,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:40,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:35:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:41,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:35:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:41,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:35:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:41,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-03-30 23:35:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:41,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-03-30 23:35:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:41,198 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-03-30 23:35:41,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:35:41,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148723985] [2023-03-30 23:35:41,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148723985] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:35:41,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472346088] [2023-03-30 23:35:41,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:41,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:35:41,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:35:41,200 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) [2023-03-30 23:35:41,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-30 23:35:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:41,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:35:41,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:35:41,405 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-03-30 23:35:41,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:35:41,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472346088] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:35:41,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:35:41,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:35:41,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718829451] [2023-03-30 23:35:41,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:35:41,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:35:41,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:35:41,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:35:41,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:35:41,407 INFO L87 Difference]: Start difference. First operand 7630 states and 9992 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:35:42,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:35:42,471 INFO L93 Difference]: Finished difference Result 15254 states and 19978 transitions. [2023-03-30 23:35:42,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:35:42,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 487 [2023-03-30 23:35:42,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:35:42,487 INFO L225 Difference]: With dead ends: 15254 [2023-03-30 23:35:42,487 INFO L226 Difference]: Without dead ends: 7630 [2023-03-30 23:35:42,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:35:42,497 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 324 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-30 23:35:42,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 499 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-30 23:35:42,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7630 states. [2023-03-30 23:35:42,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7630 to 7289. [2023-03-30 23:35:42,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7289 states, 7110 states have (on average 1.189170182841069) internal successors, (8455), 7179 states have internal predecessors, (8455), 44 states have call successors, (44), 44 states have call predecessors, (44), 134 states have return successors, (554), 65 states have call predecessors, (554), 43 states have call successors, (554) [2023-03-30 23:35:42,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7289 states to 7289 states and 9053 transitions. [2023-03-30 23:35:42,614 INFO L78 Accepts]: Start accepts. Automaton has 7289 states and 9053 transitions. Word has length 487 [2023-03-30 23:35:42,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:35:42,614 INFO L495 AbstractCegarLoop]: Abstraction has 7289 states and 9053 transitions. [2023-03-30 23:35:42,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:35:42,615 INFO L276 IsEmpty]: Start isEmpty. Operand 7289 states and 9053 transitions. [2023-03-30 23:35:42,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2023-03-30 23:35:42,633 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:35:42,634 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:35:42,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-30 23:35:42,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:35:42,840 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:35:42,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:35:42,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1491780481, now seen corresponding path program 1 times [2023-03-30 23:35:42,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:35:42,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035201441] [2023-03-30 23:35:42,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:42,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:35:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:43,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:35:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:43,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:35:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:43,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-03-30 23:35:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:43,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-03-30 23:35:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:43,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2023-03-30 23:35:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:43,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-03-30 23:35:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:43,690 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 619 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-03-30 23:35:43,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:35:43,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035201441] [2023-03-30 23:35:43,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035201441] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:35:43,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449167502] [2023-03-30 23:35:43,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:43,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:35:43,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:35:43,694 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) [2023-03-30 23:35:43,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-30 23:35:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:43,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 1104 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-30 23:35:43,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:35:44,265 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 622 proven. 2 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-03-30 23:35:44,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:35:45,045 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 622 proven. 2 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-03-30 23:35:45,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449167502] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:35:45,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:35:45,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-03-30 23:35:45,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20331551] [2023-03-30 23:35:45,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:35:45,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-30 23:35:45,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:35:45,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-30 23:35:45,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:35:45,051 INFO L87 Difference]: Start difference. First operand 7289 states and 9053 transitions. Second operand has 12 states, 12 states have (on average 100.5) internal successors, (1206), 10 states have internal predecessors, (1206), 8 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2023-03-30 23:35:50,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:35:50,510 INFO L93 Difference]: Finished difference Result 18049 states and 22328 transitions. [2023-03-30 23:35:50,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-03-30 23:35:50,511 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 100.5) internal successors, (1206), 10 states have internal predecessors, (1206), 8 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) Word has length 792 [2023-03-30 23:35:50,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:35:50,525 INFO L225 Difference]: With dead ends: 18049 [2023-03-30 23:35:50,526 INFO L226 Difference]: Without dead ends: 7950 [2023-03-30 23:35:50,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1667 GetRequests, 1622 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=407, Invalid=1573, Unknown=0, NotChecked=0, Total=1980 [2023-03-30 23:35:50,538 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 2019 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 8396 mSolverCounterSat, 1141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2028 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 9537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1141 IncrementalHoareTripleChecker+Valid, 8396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-03-30 23:35:50,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2028 Valid, 206 Invalid, 9537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1141 Valid, 8396 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-03-30 23:35:50,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7950 states. [2023-03-30 23:35:50,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7950 to 7579. [2023-03-30 23:35:50,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7579 states, 7414 states have (on average 1.0396547073104936) internal successors, (7708), 7476 states have internal predecessors, (7708), 46 states have call successors, (46), 46 states have call predecessors, (46), 118 states have return successors, (289), 56 states have call predecessors, (289), 45 states have call successors, (289) [2023-03-30 23:35:50,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7579 states to 7579 states and 8043 transitions. [2023-03-30 23:35:50,655 INFO L78 Accepts]: Start accepts. Automaton has 7579 states and 8043 transitions. Word has length 792 [2023-03-30 23:35:50,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:35:50,656 INFO L495 AbstractCegarLoop]: Abstraction has 7579 states and 8043 transitions. [2023-03-30 23:35:50,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 100.5) internal successors, (1206), 10 states have internal predecessors, (1206), 8 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2023-03-30 23:35:50,657 INFO L276 IsEmpty]: Start isEmpty. Operand 7579 states and 8043 transitions. [2023-03-30 23:35:50,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1288 [2023-03-30 23:35:50,677 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:35:50,677 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-03-30 23:35:50,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-03-30 23:35:50,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:35:50,884 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:35:50,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:35:50,884 INFO L85 PathProgramCache]: Analyzing trace with hash 383408784, now seen corresponding path program 1 times [2023-03-30 23:35:50,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:35:50,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383849651] [2023-03-30 23:35:50,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:50,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:35:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:52,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:35:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:52,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:35:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:52,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-03-30 23:35:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:52,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-03-30 23:35:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:52,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2023-03-30 23:35:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:52,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2023-03-30 23:35:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:52,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 722 [2023-03-30 23:35:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:52,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 937 [2023-03-30 23:35:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:52,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-03-30 23:35:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:52,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2965 backedges. 741 proven. 231 refuted. 0 times theorem prover too weak. 1993 trivial. 0 not checked. [2023-03-30 23:35:52,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:35:52,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383849651] [2023-03-30 23:35:52,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383849651] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:35:52,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066672070] [2023-03-30 23:35:52,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:52,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:35:52,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:35:52,967 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) [2023-03-30 23:35:53,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-03-30 23:35:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:53,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 1704 conjuncts, 11 conjunts are in the unsatisfiable core [2023-03-30 23:35:53,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:35:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2965 backedges. 969 proven. 0 refuted. 0 times theorem prover too weak. 1996 trivial. 0 not checked. [2023-03-30 23:35:53,610 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:35:53,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066672070] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:35:53,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:35:53,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-03-30 23:35:53,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435948497] [2023-03-30 23:35:53,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:35:53,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:35:53,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:35:53,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:35:53,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:35:53,612 INFO L87 Difference]: Start difference. First operand 7579 states and 8043 transitions. Second operand has 5 states, 5 states have (on average 111.4) internal successors, (557), 4 states have internal predecessors, (557), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-03-30 23:35:54,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:35:54,532 INFO L93 Difference]: Finished difference Result 15852 states and 16813 transitions. [2023-03-30 23:35:54,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 23:35:54,541 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 111.4) internal successors, (557), 4 states have internal predecessors, (557), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 1287 [2023-03-30 23:35:54,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:35:54,555 INFO L225 Difference]: With dead ends: 15852 [2023-03-30 23:35:54,555 INFO L226 Difference]: Without dead ends: 8279 [2023-03-30 23:35:54,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1316 GetRequests, 1304 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-03-30 23:35:54,566 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 524 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-30 23:35:54,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 69 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-30 23:35:54,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8279 states. [2023-03-30 23:35:54,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8279 to 8259. [2023-03-30 23:35:54,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8259 states, 8083 states have (on average 1.0374860819002845) internal successors, (8386), 8148 states have internal predecessors, (8386), 50 states have call successors, (50), 50 states have call predecessors, (50), 125 states have return successors, (304), 60 states have call predecessors, (304), 49 states have call successors, (304) [2023-03-30 23:35:54,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8259 states to 8259 states and 8740 transitions. [2023-03-30 23:35:54,749 INFO L78 Accepts]: Start accepts. Automaton has 8259 states and 8740 transitions. Word has length 1287 [2023-03-30 23:35:54,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:35:54,749 INFO L495 AbstractCegarLoop]: Abstraction has 8259 states and 8740 transitions. [2023-03-30 23:35:54,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.4) internal successors, (557), 4 states have internal predecessors, (557), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-03-30 23:35:54,749 INFO L276 IsEmpty]: Start isEmpty. Operand 8259 states and 8740 transitions. [2023-03-30 23:35:54,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1535 [2023-03-30 23:35:54,792 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:35:54,792 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:35:54,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-03-30 23:35:54,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:35:55,000 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:35:55,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:35:55,000 INFO L85 PathProgramCache]: Analyzing trace with hash -622010425, now seen corresponding path program 1 times [2023-03-30 23:35:55,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:35:55,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844857400] [2023-03-30 23:35:55,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:55,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:35:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:56,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:35:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:56,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:35:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:56,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-03-30 23:35:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:56,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2023-03-30 23:35:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:56,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2023-03-30 23:35:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:56,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2023-03-30 23:35:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:56,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2023-03-30 23:35:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:57,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 969 [2023-03-30 23:35:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:57,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1184 [2023-03-30 23:35:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:57,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-03-30 23:35:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:57,210 INFO L134 CoverageAnalysis]: Checked inductivity of 4185 backedges. 907 proven. 231 refuted. 0 times theorem prover too weak. 3047 trivial. 0 not checked. [2023-03-30 23:35:57,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:35:57,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844857400] [2023-03-30 23:35:57,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844857400] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:35:57,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812917430] [2023-03-30 23:35:57,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:57,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:35:57,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:35:57,211 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) [2023-03-30 23:35:57,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-03-30 23:35:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:57,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 1987 conjuncts, 12 conjunts are in the unsatisfiable core [2023-03-30 23:35:57,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:35:58,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4185 backedges. 2187 proven. 2 refuted. 0 times theorem prover too weak. 1996 trivial. 0 not checked. [2023-03-30 23:35:58,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:36:01,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4185 backedges. 393 proven. 2054 refuted. 0 times theorem prover too weak. 1738 trivial. 0 not checked. [2023-03-30 23:36:01,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812917430] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:36:01,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:36:01,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-03-30 23:36:01,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29926149] [2023-03-30 23:36:01,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:36:01,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-03-30 23:36:01,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:36:01,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-03-30 23:36:01,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2023-03-30 23:36:01,977 INFO L87 Difference]: Start difference. First operand 8259 states and 8740 transitions. Second operand has 20 states, 20 states have (on average 86.7) internal successors, (1734), 18 states have internal predecessors, (1734), 7 states have call successors, (17), 10 states have call predecessors, (17), 9 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-03-30 23:36:10,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:36:10,376 INFO L93 Difference]: Finished difference Result 28219 states and 30337 transitions. [2023-03-30 23:36:10,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-03-30 23:36:10,376 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 86.7) internal successors, (1734), 18 states have internal predecessors, (1734), 7 states have call successors, (17), 10 states have call predecessors, (17), 9 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 1534 [2023-03-30 23:36:10,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:36:10,379 INFO L225 Difference]: With dead ends: 28219 [2023-03-30 23:36:10,379 INFO L226 Difference]: Without dead ends: 0 [2023-03-30 23:36:10,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3214 GetRequests, 3133 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2040 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1048, Invalid=5594, Unknown=0, NotChecked=0, Total=6642 [2023-03-30 23:36:10,407 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 15399 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 13072 mSolverCounterSat, 1777 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15411 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 14849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1777 IncrementalHoareTripleChecker+Valid, 13072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:36:10,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15411 Valid, 357 Invalid, 14849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1777 Valid, 13072 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-03-30 23:36:10,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-03-30 23:36:10,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-03-30 23:36:10,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-03-30 23:36:10,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-03-30 23:36:10,408 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1534 [2023-03-30 23:36:10,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:36:10,408 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-03-30 23:36:10,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 86.7) internal successors, (1734), 18 states have internal predecessors, (1734), 7 states have call successors, (17), 10 states have call predecessors, (17), 9 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-03-30 23:36:10,409 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-03-30 23:36:10,409 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-03-30 23:36:10,411 INFO L805 garLoopResultBuilder]: Registering result SAFE for location calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-30 23:36:10,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-03-30 23:36:10,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:36:10,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.