/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem18_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 23:43:20,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 23:43:20,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 23:43:20,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-30 23:43:20,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-30 23:43:20,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-30 23:43:20,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-30 23:43:20,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-30 23:43:20,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-30 23:43:20,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-30 23:43:20,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-30 23:43:20,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-30 23:43:20,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-30 23:43:20,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-30 23:43:20,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-30 23:43:20,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-30 23:43:20,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-30 23:43:20,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-30 23:43:20,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-30 23:43:20,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-30 23:43:20,847 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 23:43:20,860 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 23:43:20,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 23:43:20,861 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 23:43:20,861 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 23:43:20,861 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 23:43:20,861 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 23:43:20,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 23:43:20,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 23:43:20,862 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 23:43:20,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 23:43:20,862 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 23:43:20,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 23:43:20,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 23:43:20,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 23:43:20,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 23:43:20,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 23:43:20,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 23:43:20,863 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 23:43:20,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 23:43:20,863 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 23:43:20,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 23:43:20,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 23:43:20,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 23:43:20,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 23:43:20,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:43:20,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 23:43:20,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 23:43:20,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 23:43:20,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 23:43:20,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 23:43:20,864 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 23:43:20,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 23:43:20,864 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 23:43:20,864 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 23:43:20,864 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 23:43:20,864 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 23:43:21,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 23:43:21,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 23:43:21,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 23:43:21,036 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 23:43:21,037 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 23:43:21,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem18_label05.c [2023-03-30 23:43:22,153 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 23:43:22,497 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 23:43:22,497 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label05.c [2023-03-30 23:43:22,517 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca7d5da75/8593df46064e4a87985bdf4cf205392c/FLAGfc61715b8 [2023-03-30 23:43:22,532 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca7d5da75/8593df46064e4a87985bdf4cf205392c [2023-03-30 23:43:22,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 23:43:22,535 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 23:43:22,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 23:43:22,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 23:43:22,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 23:43:22,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:43:22" (1/1) ... [2023-03-30 23:43:22,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68b8155b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:43:22, skipping insertion in model container [2023-03-30 23:43:22,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:43:22" (1/1) ... [2023-03-30 23:43:22,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 23:43:22,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 23:43:22,802 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label05.c[4165,4178] [2023-03-30 23:43:23,401 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:43:23,414 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 23:43:23,435 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label05.c[4165,4178] [2023-03-30 23:43:23,638 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:43:23,655 INFO L208 MainTranslator]: Completed translation [2023-03-30 23:43:23,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:43:23 WrapperNode [2023-03-30 23:43:23,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 23:43:23,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 23:43:23,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 23:43:23,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 23:43:23,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:43:23" (1/1) ... [2023-03-30 23:43:23,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:43:23" (1/1) ... [2023-03-30 23:43:23,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:43:23" (1/1) ... [2023-03-30 23:43:23,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:43:23" (1/1) ... [2023-03-30 23:43:23,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:43:23" (1/1) ... [2023-03-30 23:43:23,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:43:23" (1/1) ... [2023-03-30 23:43:23,809 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:43:23" (1/1) ... [2023-03-30 23:43:23,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:43:23" (1/1) ... [2023-03-30 23:43:23,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 23:43:23,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 23:43:23,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 23:43:23,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 23:43:23,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:43:23" (1/1) ... [2023-03-30 23:43:23,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:43:23,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:43:23,878 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 23:43:23,885 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 23:43:23,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 23:43:23,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 23:43:23,910 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 23:43:23,910 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-30 23:43:23,910 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-03-30 23:43:23,910 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-03-30 23:43:23,911 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 23:43:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-30 23:43:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-03-30 23:43:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-03-30 23:43:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 23:43:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 23:43:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 23:43:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 23:43:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 23:43:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-30 23:43:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 23:43:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 23:43:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 23:43:23,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 23:43:23,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 23:43:23,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 23:43:23,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 23:43:23,986 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 23:43:23,987 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 23:43:26,225 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 23:43:26,233 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 23:43:26,233 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-30 23:43:26,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:43:26 BoogieIcfgContainer [2023-03-30 23:43:26,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 23:43:26,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 23:43:26,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 23:43:26,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 23:43:26,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 11:43:22" (1/3) ... [2023-03-30 23:43:26,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2095dae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:43:26, skipping insertion in model container [2023-03-30 23:43:26,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:43:23" (2/3) ... [2023-03-30 23:43:26,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2095dae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:43:26, skipping insertion in model container [2023-03-30 23:43:26,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:43:26" (3/3) ... [2023-03-30 23:43:26,240 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label05.c [2023-03-30 23:43:26,251 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 23:43:26,251 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 23:43:26,291 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 23:43:26,295 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;@458b200e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 23:43:26,296 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 23:43:26,300 INFO L276 IsEmpty]: Start isEmpty. Operand has 774 states, 762 states have (on average 1.9041994750656168) internal successors, (1451), 763 states have internal predecessors, (1451), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-03-30 23:43:26,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-03-30 23:43:26,306 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:43:26,307 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] [2023-03-30 23:43:26,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:43:26,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:43:26,310 INFO L85 PathProgramCache]: Analyzing trace with hash -611972685, now seen corresponding path program 1 times [2023-03-30 23:43:26,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:43:26,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950058597] [2023-03-30 23:43:26,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:43:26,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:43:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:26,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:43:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:26,668 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 23:43:26,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:43:26,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950058597] [2023-03-30 23:43:26,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950058597] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:43:26,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:43:26,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-30 23:43:26,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882043423] [2023-03-30 23:43:26,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:43:26,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-30 23:43:26,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:43:26,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-30 23:43:26,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-30 23:43:26,693 INFO L87 Difference]: Start difference. First operand has 774 states, 762 states have (on average 1.9041994750656168) internal successors, (1451), 763 states have internal predecessors, (1451), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 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 23:43:30,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:43:30,274 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2023-03-30 23:43:30,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-30 23:43:30,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 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 44 [2023-03-30 23:43:30,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:43:30,301 INFO L225 Difference]: With dead ends: 2270 [2023-03-30 23:43:30,302 INFO L226 Difference]: Without dead ends: 1432 [2023-03-30 23:43:30,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:43:30,314 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2149 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3363 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2149 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 3955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 3363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-03-30 23:43:30,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2149 Valid, 37 Invalid, 3955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 3363 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-03-30 23:43:30,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2023-03-30 23:43:30,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2023-03-30 23:43:30,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1404 states have (on average 1.5690883190883191) internal successors, (2203), 1406 states have internal predecessors, (2203), 8 states have call successors, (8), 8 states have call predecessors, (8), 12 states have return successors, (18), 10 states have call predecessors, (18), 7 states have call successors, (18) [2023-03-30 23:43:30,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2229 transitions. [2023-03-30 23:43:30,427 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2229 transitions. Word has length 44 [2023-03-30 23:43:30,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:43:30,428 INFO L495 AbstractCegarLoop]: Abstraction has 1425 states and 2229 transitions. [2023-03-30 23:43:30,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 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 23:43:30,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2229 transitions. [2023-03-30 23:43:30,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-03-30 23:43:30,433 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:43:30,433 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:30,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 23:43:30,434 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:43:30,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:43:30,434 INFO L85 PathProgramCache]: Analyzing trace with hash 424970874, now seen corresponding path program 1 times [2023-03-30 23:43:30,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:43:30,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91931275] [2023-03-30 23:43:30,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:43:30,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:43:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:30,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:43:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:30,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:43:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:30,767 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:43:30,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:43:30,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91931275] [2023-03-30 23:43:30,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91931275] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:43:30,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:43:30,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-30 23:43:30,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189975514] [2023-03-30 23:43:30,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:43:30,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-30 23:43:30,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:43:30,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-30 23:43:30,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:43:30,773 INFO L87 Difference]: Start difference. First operand 1425 states and 2229 transitions. Second operand has 7 states, 6 states have (on average 18.0) internal successors, (108), 4 states have internal predecessors, (108), 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 23:43:34,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:43:34,771 INFO L93 Difference]: Finished difference Result 4355 states and 6855 transitions. [2023-03-30 23:43:34,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-30 23:43:34,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 18.0) internal successors, (108), 4 states have internal predecessors, (108), 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 114 [2023-03-30 23:43:34,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:43:34,784 INFO L225 Difference]: With dead ends: 4355 [2023-03-30 23:43:34,784 INFO L226 Difference]: Without dead ends: 2936 [2023-03-30 23:43:34,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:43:34,799 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 3812 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 4845 mSolverCounterSat, 826 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3812 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 5671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 826 IncrementalHoareTripleChecker+Valid, 4845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-03-30 23:43:34,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3812 Valid, 123 Invalid, 5671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [826 Valid, 4845 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-03-30 23:43:34,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2023-03-30 23:43:34,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 2886. [2023-03-30 23:43:34,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2831 states have (on average 1.3733663016601907) internal successors, (3888), 2842 states have internal predecessors, (3888), 14 states have call successors, (14), 14 states have call predecessors, (14), 40 states have return successors, (85), 29 states have call predecessors, (85), 13 states have call successors, (85) [2023-03-30 23:43:34,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 3987 transitions. [2023-03-30 23:43:34,872 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 3987 transitions. Word has length 114 [2023-03-30 23:43:34,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:43:34,873 INFO L495 AbstractCegarLoop]: Abstraction has 2886 states and 3987 transitions. [2023-03-30 23:43:34,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 18.0) internal successors, (108), 4 states have internal predecessors, (108), 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 23:43:34,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 3987 transitions. [2023-03-30 23:43:34,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-03-30 23:43:34,883 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:43:34,884 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:34,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-30 23:43:34,884 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:43:34,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:43:34,884 INFO L85 PathProgramCache]: Analyzing trace with hash -974540898, now seen corresponding path program 1 times [2023-03-30 23:43:34,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:43:34,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360698827] [2023-03-30 23:43:34,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:43:34,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:43:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:35,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:43:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:35,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:43:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:35,229 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:43:35,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:43:35,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360698827] [2023-03-30 23:43:35,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360698827] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:43:35,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:43:35,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-30 23:43:35,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063291809] [2023-03-30 23:43:35,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:43:35,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 23:43:35,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:43:35,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 23:43:35,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:43:35,231 INFO L87 Difference]: Start difference. First operand 2886 states and 3987 transitions. Second operand has 8 states, 7 states have (on average 24.285714285714285) internal successors, (170), 5 states have internal predecessors, (170), 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 23:43:41,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:43:41,178 INFO L93 Difference]: Finished difference Result 11696 states and 16595 transitions. [2023-03-30 23:43:41,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-30 23:43:41,178 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 24.285714285714285) internal successors, (170), 5 states have internal predecessors, (170), 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 176 [2023-03-30 23:43:41,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:43:41,205 INFO L225 Difference]: With dead ends: 11696 [2023-03-30 23:43:41,206 INFO L226 Difference]: Without dead ends: 8816 [2023-03-30 23:43:41,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-03-30 23:43:41,216 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 3829 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 7432 mSolverCounterSat, 1568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3829 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 9000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1568 IncrementalHoareTripleChecker+Valid, 7432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:43:41,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3829 Valid, 118 Invalid, 9000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1568 Valid, 7432 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-03-30 23:43:41,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8816 states. [2023-03-30 23:43:41,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8816 to 8757. [2023-03-30 23:43:41,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8757 states, 8556 states have (on average 1.2331697054698456) internal successors, (10551), 8606 states have internal predecessors, (10551), 38 states have call successors, (38), 38 states have call predecessors, (38), 162 states have return successors, (568), 112 states have call predecessors, (568), 37 states have call successors, (568) [2023-03-30 23:43:41,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8757 states to 8757 states and 11157 transitions. [2023-03-30 23:43:41,386 INFO L78 Accepts]: Start accepts. Automaton has 8757 states and 11157 transitions. Word has length 176 [2023-03-30 23:43:41,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:43:41,386 INFO L495 AbstractCegarLoop]: Abstraction has 8757 states and 11157 transitions. [2023-03-30 23:43:41,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 24.285714285714285) internal successors, (170), 5 states have internal predecessors, (170), 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 23:43:41,387 INFO L276 IsEmpty]: Start isEmpty. Operand 8757 states and 11157 transitions. [2023-03-30 23:43:41,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-03-30 23:43:41,390 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:43:41,390 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:43:41,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-30 23:43:41,390 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:43:41,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:43:41,391 INFO L85 PathProgramCache]: Analyzing trace with hash 477781926, now seen corresponding path program 1 times [2023-03-30 23:43:41,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:43:41,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630555966] [2023-03-30 23:43:41,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:43:41,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:43:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:41,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:43:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:41,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:43:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:41,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-03-30 23:43:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:41,707 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-30 23:43:41,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:43:41,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630555966] [2023-03-30 23:43:41,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630555966] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:43:41,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592912535] [2023-03-30 23:43:41,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:43:41,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:43:41,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:43:41,735 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 23:43:41,738 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 23:43:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:41,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:43:41,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:43:41,985 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:43:41,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:43:42,228 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:43:42,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592912535] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:43:42,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:43:42,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-03-30 23:43:42,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278443105] [2023-03-30 23:43:42,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:43:42,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-30 23:43:42,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:43:42,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-30 23:43:42,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:43:42,230 INFO L87 Difference]: Start difference. First operand 8757 states and 11157 transitions. Second operand has 11 states, 11 states have (on average 33.90909090909091) internal successors, (373), 9 states have internal predecessors, (373), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-03-30 23:43:48,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:43:48,621 INFO L93 Difference]: Finished difference Result 23722 states and 31240 transitions. [2023-03-30 23:43:48,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-03-30 23:43:48,622 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 33.90909090909091) internal successors, (373), 9 states have internal predecessors, (373), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 239 [2023-03-30 23:43:48,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:43:48,666 INFO L225 Difference]: With dead ends: 23722 [2023-03-30 23:43:48,666 INFO L226 Difference]: Without dead ends: 14114 [2023-03-30 23:43:48,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 482 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-03-30 23:43:48,687 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 3889 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 11951 mSolverCounterSat, 2022 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3892 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 13973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2022 IncrementalHoareTripleChecker+Valid, 11951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-03-30 23:43:48,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3892 Valid, 206 Invalid, 13973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2022 Valid, 11951 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-03-30 23:43:48,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14114 states. [2023-03-30 23:43:48,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14114 to 12499. [2023-03-30 23:43:48,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12499 states, 12177 states have (on average 1.119076948345241) internal successors, (13627), 12268 states have internal predecessors, (13627), 53 states have call successors, (53), 53 states have call predecessors, (53), 268 states have return successors, (809), 177 states have call predecessors, (809), 52 states have call successors, (809) [2023-03-30 23:43:48,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12499 states to 12499 states and 14489 transitions. [2023-03-30 23:43:48,976 INFO L78 Accepts]: Start accepts. Automaton has 12499 states and 14489 transitions. Word has length 239 [2023-03-30 23:43:48,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:43:48,977 INFO L495 AbstractCegarLoop]: Abstraction has 12499 states and 14489 transitions. [2023-03-30 23:43:48,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 33.90909090909091) internal successors, (373), 9 states have internal predecessors, (373), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-03-30 23:43:48,978 INFO L276 IsEmpty]: Start isEmpty. Operand 12499 states and 14489 transitions. [2023-03-30 23:43:48,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2023-03-30 23:43:48,987 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:43:48,987 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 23:43:49,004 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 23:43:49,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:43:49,195 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:43:49,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:43:49,196 INFO L85 PathProgramCache]: Analyzing trace with hash 257123992, now seen corresponding path program 1 times [2023-03-30 23:43:49,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:43:49,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251674759] [2023-03-30 23:43:49,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:43:49,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:43:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:49,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:43:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:49,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:43:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:49,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-03-30 23:43:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:49,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-03-30 23:43:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:49,552 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 250 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-03-30 23:43:49,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:43:49,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251674759] [2023-03-30 23:43:49,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251674759] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:43:49,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218516571] [2023-03-30 23:43:49,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:43:49,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:43:49,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:43:49,569 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 23:43:49,593 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 23:43:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:49,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:43:49,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:43:49,807 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 252 proven. 2 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-03-30 23:43:49,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:43:50,011 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 252 proven. 2 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-03-30 23:43:50,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218516571] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:43:50,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:43:50,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-03-30 23:43:50,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584538575] [2023-03-30 23:43:50,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:43:50,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-30 23:43:50,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:43:50,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-30 23:43:50,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:43:50,013 INFO L87 Difference]: Start difference. First operand 12499 states and 14489 transitions. Second operand has 11 states, 11 states have (on average 33.36363636363637) internal successors, (367), 9 states have internal predecessors, (367), 4 states have call successors, (9), 6 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 23:43:54,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:43:54,758 INFO L93 Difference]: Finished difference Result 28580 states and 32866 transitions. [2023-03-30 23:43:54,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-03-30 23:43:54,761 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 33.36363636363637) internal successors, (367), 9 states have internal predecessors, (367), 4 states have call successors, (9), 6 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 342 [2023-03-30 23:43:54,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:43:54,798 INFO L225 Difference]: With dead ends: 28580 [2023-03-30 23:43:54,798 INFO L226 Difference]: Without dead ends: 16087 [2023-03-30 23:43:54,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 715 GetRequests, 694 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-03-30 23:43:54,818 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 3983 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 7745 mSolverCounterSat, 1160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3989 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 8905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1160 IncrementalHoareTripleChecker+Valid, 7745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-03-30 23:43:54,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3989 Valid, 156 Invalid, 8905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1160 Valid, 7745 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-03-30 23:43:54,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16087 states. [2023-03-30 23:43:54,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16087 to 12499. [2023-03-30 23:43:54,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12499 states, 12177 states have (on average 1.0774410774410774) internal successors, (13120), 12268 states have internal predecessors, (13120), 53 states have call successors, (53), 53 states have call predecessors, (53), 268 states have return successors, (548), 177 states have call predecessors, (548), 52 states have call successors, (548) [2023-03-30 23:43:55,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12499 states to 12499 states and 13721 transitions. [2023-03-30 23:43:55,006 INFO L78 Accepts]: Start accepts. Automaton has 12499 states and 13721 transitions. Word has length 342 [2023-03-30 23:43:55,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:43:55,007 INFO L495 AbstractCegarLoop]: Abstraction has 12499 states and 13721 transitions. [2023-03-30 23:43:55,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 33.36363636363637) internal successors, (367), 9 states have internal predecessors, (367), 4 states have call successors, (9), 6 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 23:43:55,007 INFO L276 IsEmpty]: Start isEmpty. Operand 12499 states and 13721 transitions. [2023-03-30 23:43:55,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-03-30 23:43:55,010 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:43:55,011 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:43:55,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-03-30 23:43:55,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:43:55,217 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:43:55,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:43:55,218 INFO L85 PathProgramCache]: Analyzing trace with hash -979025589, now seen corresponding path program 1 times [2023-03-30 23:43:55,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:43:55,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424443124] [2023-03-30 23:43:55,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:43:55,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:43:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:55,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:43:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:55,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:43:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:55,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-03-30 23:43:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:55,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-03-30 23:43:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:55,544 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 114 proven. 3 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-03-30 23:43:55,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:43:55,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424443124] [2023-03-30 23:43:55,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424443124] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:43:55,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640785886] [2023-03-30 23:43:55,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:43:55,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:43:55,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:43:55,562 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 23:43:55,563 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 23:43:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:55,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:43:55,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:43:55,723 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-03-30 23:43:55,723 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:43:55,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640785886] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:43:55,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:43:55,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:43:55,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768932107] [2023-03-30 23:43:55,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:43:55,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:43:55,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:43:55,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:43:55,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:43:55,725 INFO L87 Difference]: Start difference. First operand 12499 states and 13721 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 23:43:57,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:43:57,649 INFO L93 Difference]: Finished difference Result 34971 states and 39133 transitions. [2023-03-30 23:43:57,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:43:57,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 359 [2023-03-30 23:43:57,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:43:57,690 INFO L225 Difference]: With dead ends: 34971 [2023-03-30 23:43:57,690 INFO L226 Difference]: Without dead ends: 21686 [2023-03-30 23:43:57,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 367 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 23:43:57,711 INFO L413 NwaCegarLoop]: 1165 mSDtfsCounter, 663 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 2362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:43:57,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 1191 Invalid, 2362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-03-30 23:43:57,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21686 states. [2023-03-30 23:43:57,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21686 to 21672. [2023-03-30 23:43:57,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21672 states, 21249 states have (on average 1.0441903148383453) internal successors, (22188), 21362 states have internal predecessors, (22188), 92 states have call successors, (92), 92 states have call predecessors, (92), 330 states have return successors, (979), 217 states have call predecessors, (979), 91 states have call successors, (979) [2023-03-30 23:43:57,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21672 states to 21672 states and 23259 transitions. [2023-03-30 23:43:57,991 INFO L78 Accepts]: Start accepts. Automaton has 21672 states and 23259 transitions. Word has length 359 [2023-03-30 23:43:57,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:43:57,992 INFO L495 AbstractCegarLoop]: Abstraction has 21672 states and 23259 transitions. [2023-03-30 23:43:57,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 23:43:57,992 INFO L276 IsEmpty]: Start isEmpty. Operand 21672 states and 23259 transitions. [2023-03-30 23:43:57,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-03-30 23:43:57,994 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:43:57,994 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:43:58,002 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 23:43:58,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:43:58,200 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:43:58,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:43:58,201 INFO L85 PathProgramCache]: Analyzing trace with hash -190002092, now seen corresponding path program 1 times [2023-03-30 23:43:58,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:43:58,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816957927] [2023-03-30 23:43:58,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:43:58,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:43:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:58,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:43:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:58,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:43:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:58,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-03-30 23:43:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:58,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-03-30 23:43:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:58,513 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 114 proven. 3 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-03-30 23:43:58,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:43:58,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816957927] [2023-03-30 23:43:58,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816957927] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:43:58,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861315298] [2023-03-30 23:43:58,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:43:58,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:43:58,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:43:58,518 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 23:43:58,520 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 23:43:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:43:58,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:43:58,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:43:58,689 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-03-30 23:43:58,689 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:43:58,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861315298] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:43:58,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:43:58,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:43:58,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344902055] [2023-03-30 23:43:58,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:43:58,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:43:58,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:43:58,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:43:58,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:43:58,691 INFO L87 Difference]: Start difference. First operand 21672 states and 23259 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 23:44:00,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:44:00,469 INFO L93 Difference]: Finished difference Result 50440 states and 54860 transitions. [2023-03-30 23:44:00,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:44:00,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 360 [2023-03-30 23:44:00,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:44:00,530 INFO L225 Difference]: With dead ends: 50440 [2023-03-30 23:44:00,530 INFO L226 Difference]: Without dead ends: 28774 [2023-03-30 23:44:00,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:44:00,567 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 694 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 2037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-03-30 23:44:00,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 196 Invalid, 2037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-03-30 23:44:00,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28774 states. [2023-03-30 23:44:01,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28774 to 27361. [2023-03-30 23:44:01,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27361 states, 26861 states have (on average 1.0489557350806) internal successors, (28176), 26988 states have internal predecessors, (28176), 116 states have call successors, (116), 116 states have call predecessors, (116), 383 states have return successors, (1431), 256 states have call predecessors, (1431), 115 states have call successors, (1431) [2023-03-30 23:44:01,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27361 states to 27361 states and 29723 transitions. [2023-03-30 23:44:01,114 INFO L78 Accepts]: Start accepts. Automaton has 27361 states and 29723 transitions. Word has length 360 [2023-03-30 23:44:01,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:44:01,115 INFO L495 AbstractCegarLoop]: Abstraction has 27361 states and 29723 transitions. [2023-03-30 23:44:01,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 23:44:01,116 INFO L276 IsEmpty]: Start isEmpty. Operand 27361 states and 29723 transitions. [2023-03-30 23:44:01,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-03-30 23:44:01,118 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:44:01,118 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:44:01,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-03-30 23:44:01,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:44:01,328 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:44:01,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:44:01,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1636501435, now seen corresponding path program 1 times [2023-03-30 23:44:01,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:44:01,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793534853] [2023-03-30 23:44:01,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:44:01,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:44:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:01,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:44:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:01,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:44:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:01,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-03-30 23:44:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:01,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-03-30 23:44:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:01,578 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 114 proven. 3 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-03-30 23:44:01,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:44:01,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793534853] [2023-03-30 23:44:01,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793534853] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:44:01,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783476713] [2023-03-30 23:44:01,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:44:01,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:44:01,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:44:01,601 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 23:44:01,602 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 23:44:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:01,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:44:01,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:44:01,775 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-03-30 23:44:01,775 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:44:01,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783476713] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:44:01,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:44:01,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:44:01,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748088527] [2023-03-30 23:44:01,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:44:01,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:44:01,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:44:01,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:44:01,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:44:01,776 INFO L87 Difference]: Start difference. First operand 27361 states and 29723 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 23:44:03,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:44:03,449 INFO L93 Difference]: Finished difference Result 67490 states and 74366 transitions. [2023-03-30 23:44:03,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:44:03,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 367 [2023-03-30 23:44:03,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:44:03,529 INFO L225 Difference]: With dead ends: 67490 [2023-03-30 23:44:03,529 INFO L226 Difference]: Without dead ends: 39421 [2023-03-30 23:44:03,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 375 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 23:44:03,568 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 672 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 2053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-30 23:44:03,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 943 Invalid, 2053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 1760 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-30 23:44:03,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39421 states. [2023-03-30 23:44:04,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39421 to 38014. [2023-03-30 23:44:04,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38014 states, 37373 states have (on average 1.0487250153854386) internal successors, (39194), 37530 states have internal predecessors, (39194), 161 states have call successors, (161), 161 states have call predecessors, (161), 479 states have return successors, (2316), 322 states have call predecessors, (2316), 160 states have call successors, (2316) [2023-03-30 23:44:04,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38014 states to 38014 states and 41671 transitions. [2023-03-30 23:44:04,156 INFO L78 Accepts]: Start accepts. Automaton has 38014 states and 41671 transitions. Word has length 367 [2023-03-30 23:44:04,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:44:04,157 INFO L495 AbstractCegarLoop]: Abstraction has 38014 states and 41671 transitions. [2023-03-30 23:44:04,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 23:44:04,157 INFO L276 IsEmpty]: Start isEmpty. Operand 38014 states and 41671 transitions. [2023-03-30 23:44:04,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2023-03-30 23:44:04,162 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:44:04,162 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:44:04,181 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 23:44:04,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:44:04,368 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:44:04,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:44:04,369 INFO L85 PathProgramCache]: Analyzing trace with hash -418506258, now seen corresponding path program 1 times [2023-03-30 23:44:04,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:44:04,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006591138] [2023-03-30 23:44:04,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:44:04,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:44:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:04,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:44:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:04,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:44:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:04,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-03-30 23:44:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:04,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-03-30 23:44:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:04,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-03-30 23:44:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:04,971 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 150 proven. 16 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2023-03-30 23:44:04,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:44:04,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006591138] [2023-03-30 23:44:04,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006591138] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:44:04,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899384114] [2023-03-30 23:44:04,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:44:04,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:44:04,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:44:04,985 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 23:44:04,986 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 23:44:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:05,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:44:05,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:44:05,189 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2023-03-30 23:44:05,189 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:44:05,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899384114] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:44:05,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:44:05,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2023-03-30 23:44:05,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748814872] [2023-03-30 23:44:05,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:44:05,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:44:05,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:44:05,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:44:05,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:44:05,191 INFO L87 Difference]: Start difference. First operand 38014 states and 41671 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 23:44:06,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:44:06,930 INFO L93 Difference]: Finished difference Result 76022 states and 83336 transitions. [2023-03-30 23:44:06,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:44:06,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 463 [2023-03-30 23:44:06,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:44:07,112 INFO L225 Difference]: With dead ends: 76022 [2023-03-30 23:44:07,112 INFO L226 Difference]: Without dead ends: 38014 [2023-03-30 23:44:07,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:44:07,140 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 769 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-03-30 23:44:07,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 790 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1702 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-03-30 23:44:07,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38014 states. [2023-03-30 23:44:07,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38014 to 38014. [2023-03-30 23:44:07,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38014 states, 37373 states have (on average 1.0423300243491291) internal successors, (38955), 37530 states have internal predecessors, (38955), 161 states have call successors, (161), 161 states have call predecessors, (161), 479 states have return successors, (2082), 322 states have call predecessors, (2082), 160 states have call successors, (2082) [2023-03-30 23:44:07,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38014 states to 38014 states and 41198 transitions. [2023-03-30 23:44:07,565 INFO L78 Accepts]: Start accepts. Automaton has 38014 states and 41198 transitions. Word has length 463 [2023-03-30 23:44:07,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:44:07,566 INFO L495 AbstractCegarLoop]: Abstraction has 38014 states and 41198 transitions. [2023-03-30 23:44:07,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 23:44:07,566 INFO L276 IsEmpty]: Start isEmpty. Operand 38014 states and 41198 transitions. [2023-03-30 23:44:07,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-03-30 23:44:07,584 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:44:07,585 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:44:07,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-03-30 23:44:07,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:44:07,791 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:44:07,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:44:07,792 INFO L85 PathProgramCache]: Analyzing trace with hash 670403177, now seen corresponding path program 1 times [2023-03-30 23:44:07,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:44:07,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804530027] [2023-03-30 23:44:07,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:44:07,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:44:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:08,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:44:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:08,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:44:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:08,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-03-30 23:44:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:08,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-03-30 23:44:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:08,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-03-30 23:44:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 114 proven. 3 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-03-30 23:44:08,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:44:08,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804530027] [2023-03-30 23:44:08,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804530027] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:44:08,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221612632] [2023-03-30 23:44:08,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:44:08,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:44:08,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:44:08,451 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 23:44:08,453 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 23:44:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:08,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 5 conjunts are in the unsatisfiable core [2023-03-30 23:44:08,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:44:08,687 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-03-30 23:44:08,687 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:44:08,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221612632] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:44:08,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:44:08,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:44:08,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522239655] [2023-03-30 23:44:08,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:44:08,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:44:08,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:44:08,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:44:08,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:44:08,689 INFO L87 Difference]: Start difference. First operand 38014 states and 41198 transitions. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-03-30 23:44:10,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:44:10,478 INFO L93 Difference]: Finished difference Result 90896 states and 99337 transitions. [2023-03-30 23:44:10,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:44:10,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 663 [2023-03-30 23:44:10,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:44:10,603 INFO L225 Difference]: With dead ends: 90896 [2023-03-30 23:44:10,603 INFO L226 Difference]: Without dead ends: 52888 [2023-03-30 23:44:10,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 674 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:44:10,650 INFO L413 NwaCegarLoop]: 1003 mSDtfsCounter, 673 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1776 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-03-30 23:44:10,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 1029 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1776 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-03-30 23:44:10,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52888 states. [2023-03-30 23:44:11,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52888 to 50780. [2023-03-30 23:44:11,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50780 states, 49978 states have (on average 1.0369962783624795) internal successors, (51827), 50164 states have internal predecessors, (51827), 215 states have call successors, (215), 215 states have call predecessors, (215), 586 states have return successors, (2660), 400 states have call predecessors, (2660), 214 states have call successors, (2660) [2023-03-30 23:44:11,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50780 states to 50780 states and 54702 transitions. [2023-03-30 23:44:11,467 INFO L78 Accepts]: Start accepts. Automaton has 50780 states and 54702 transitions. Word has length 663 [2023-03-30 23:44:11,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:44:11,469 INFO L495 AbstractCegarLoop]: Abstraction has 50780 states and 54702 transitions. [2023-03-30 23:44:11,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-03-30 23:44:11,469 INFO L276 IsEmpty]: Start isEmpty. Operand 50780 states and 54702 transitions. [2023-03-30 23:44:11,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2023-03-30 23:44:11,509 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:44:11,510 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:44:11,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-03-30 23:44:11,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:44:11,717 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:44:11,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:44:11,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1845825359, now seen corresponding path program 1 times [2023-03-30 23:44:11,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:44:11,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054836110] [2023-03-30 23:44:11,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:44:11,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:44:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:12,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:44:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:12,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:44:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:12,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-03-30 23:44:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:12,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-03-30 23:44:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:12,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-03-30 23:44:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:12,579 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 114 proven. 3 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-03-30 23:44:12,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:44:12,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054836110] [2023-03-30 23:44:12,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054836110] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:44:12,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107625552] [2023-03-30 23:44:12,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:44:12,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:44:12,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:44:12,593 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:44:12,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-03-30 23:44:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:12,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:44:12,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:44:12,830 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-03-30 23:44:12,831 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:44:12,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107625552] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:44:12,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:44:12,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:44:12,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776279803] [2023-03-30 23:44:12,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:44:12,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:44:12,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:44:12,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:44:12,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:44:12,834 INFO L87 Difference]: Start difference. First operand 50780 states and 54702 transitions. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-03-30 23:44:14,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:44:14,857 INFO L93 Difference]: Finished difference Result 114958 states and 124397 transitions. [2023-03-30 23:44:14,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:44:14,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 772 [2023-03-30 23:44:14,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:44:15,010 INFO L225 Difference]: With dead ends: 114958 [2023-03-30 23:44:15,010 INFO L226 Difference]: Without dead ends: 63477 [2023-03-30 23:44:15,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 787 GetRequests, 783 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 23:44:15,088 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 671 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1766 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 2103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 1766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-03-30 23:44:15,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 863 Invalid, 2103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 1766 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-03-30 23:44:15,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63477 states. [2023-03-30 23:44:15,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63477 to 59265. [2023-03-30 23:44:15,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59265 states, 58365 states have (on average 1.0386190353807934) internal successors, (60619), 58568 states have internal predecessors, (60619), 251 states have call successors, (251), 251 states have call predecessors, (251), 648 states have return successors, (3386), 445 states have call predecessors, (3386), 250 states have call successors, (3386) [2023-03-30 23:44:16,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59265 states to 59265 states and 64256 transitions. [2023-03-30 23:44:16,043 INFO L78 Accepts]: Start accepts. Automaton has 59265 states and 64256 transitions. Word has length 772 [2023-03-30 23:44:16,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:44:16,044 INFO L495 AbstractCegarLoop]: Abstraction has 59265 states and 64256 transitions. [2023-03-30 23:44:16,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-03-30 23:44:16,044 INFO L276 IsEmpty]: Start isEmpty. Operand 59265 states and 64256 transitions. [2023-03-30 23:44:16,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 806 [2023-03-30 23:44:16,085 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:44:16,085 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:16,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-03-30 23:44:16,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-03-30 23:44:16,291 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:44:16,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:44:16,292 INFO L85 PathProgramCache]: Analyzing trace with hash -963306030, now seen corresponding path program 1 times [2023-03-30 23:44:16,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:44:16,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737311120] [2023-03-30 23:44:16,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:44:16,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:44:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:16,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:44:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:16,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:44:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:16,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-03-30 23:44:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:17,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2023-03-30 23:44:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:17,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-03-30 23:44:17,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:17,498 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 455 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-03-30 23:44:17,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:44:17,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737311120] [2023-03-30 23:44:17,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737311120] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:44:17,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128837435] [2023-03-30 23:44:17,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:44:17,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:44:17,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:44:17,514 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:44:17,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-03-30 23:44:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:44:17,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-30 23:44:17,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:44:18,212 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 457 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-03-30 23:44:18,212 INFO L327 TraceCheckSpWp]: Computing backward predicates...