/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/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/psyco/psyco_abp_1-3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 22:34:28,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 22:34:28,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 22:34:28,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 22:34:28,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 22:34:28,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 22:34:28,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 22:34:28,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 22:34:28,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 22:34:28,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 22:34:28,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 22:34:28,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2023-03-31 22:34:28,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 22:34:28,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 22:34:28,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 22:34:28,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 22:34:28,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 22:34:28,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 22:34:28,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 22:34:28,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 22:34:28,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 22:34:28,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 22:34:28,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 22:34:28,766 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 22:34:28,805 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 22:34:28,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 22:34:28,806 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 22:34:28,806 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 22:34:28,807 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 22:34:28,807 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 22:34:28,807 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 22:34:28,807 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 22:34:28,807 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 22:34:28,807 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 22:34:28,808 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 22:34:28,808 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 22:34:28,808 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 22:34:28,808 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 22:34:28,809 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 22:34:28,809 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 22:34:28,809 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 22:34:28,809 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 22:34:28,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 22:34:28,810 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 22:34:28,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 22:34:28,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 22:34:28,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 22:34:28,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 22:34:28,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 22:34:28,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 22:34:28,811 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 22:34:28,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 22:34:28,811 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 22:34:28,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 22:34:28,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 22:34:28,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 22:34:28,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:34:28,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 22:34:28,812 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 22:34:28,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 22:34:28,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 22:34:28,812 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 22:34:28,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 22:34:28,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 22:34:28,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 22:34:28,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 22:34:29,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 22:34:29,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 22:34:29,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 22:34:29,100 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 22:34:29,100 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 22:34:29,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/psyco/psyco_abp_1-3.c [2023-03-31 22:34:30,288 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 22:34:30,494 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 22:34:30,495 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_abp_1-3.c [2023-03-31 22:34:30,518 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b274c1cde/084c1c7f24104565a5d4178d82956a3c/FLAG83a713d08 [2023-03-31 22:34:30,532 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b274c1cde/084c1c7f24104565a5d4178d82956a3c [2023-03-31 22:34:30,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 22:34:30,536 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 22:34:30,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 22:34:30,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 22:34:30,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 22:34:30,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:34:30" (1/1) ... [2023-03-31 22:34:30,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cad4621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:34:30, skipping insertion in model container [2023-03-31 22:34:30,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:34:30" (1/1) ... [2023-03-31 22:34:30,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 22:34:30,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 22:34:30,791 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/psyco/psyco_abp_1-3.c[24720,24733] [2023-03-31 22:34:30,810 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:34:30,820 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 22:34:30,864 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/psyco/psyco_abp_1-3.c[24720,24733] [2023-03-31 22:34:30,867 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:34:30,879 INFO L208 MainTranslator]: Completed translation [2023-03-31 22:34:30,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:34:30 WrapperNode [2023-03-31 22:34:30,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 22:34:30,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 22:34:30,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 22:34:30,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 22:34:30,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:34:30" (1/1) ... [2023-03-31 22:34:30,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:34:30" (1/1) ... [2023-03-31 22:34:30,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:34:30" (1/1) ... [2023-03-31 22:34:30,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:34:30" (1/1) ... [2023-03-31 22:34:30,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:34:30" (1/1) ... [2023-03-31 22:34:30,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:34:30" (1/1) ... [2023-03-31 22:34:30,965 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:34:30" (1/1) ... [2023-03-31 22:34:30,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:34:30" (1/1) ... [2023-03-31 22:34:30,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 22:34:30,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 22:34:30,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 22:34:30,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 22:34:30,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:34:30" (1/1) ... [2023-03-31 22:34:30,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:34:31,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:34:31,013 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) [2023-03-31 22:34:31,016 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 [2023-03-31 22:34:31,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 22:34:31,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 22:34:31,047 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 22:34:31,047 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 22:34:31,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 22:34:31,047 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 22:34:31,047 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 22:34:31,048 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 22:34:31,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 22:34:31,048 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 22:34:31,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 22:34:31,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 22:34:31,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 22:34:31,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 22:34:31,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 22:34:31,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 22:34:31,120 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 22:34:31,122 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 22:34:31,855 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 22:34:31,868 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 22:34:31,869 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-03-31 22:34:31,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:34:31 BoogieIcfgContainer [2023-03-31 22:34:31,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 22:34:31,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 22:34:31,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 22:34:31,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 22:34:31,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 10:34:30" (1/3) ... [2023-03-31 22:34:31,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c76a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:34:31, skipping insertion in model container [2023-03-31 22:34:31,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:34:30" (2/3) ... [2023-03-31 22:34:31,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c76a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:34:31, skipping insertion in model container [2023-03-31 22:34:31,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:34:31" (3/3) ... [2023-03-31 22:34:31,883 INFO L112 eAbstractionObserver]: Analyzing ICFG psyco_abp_1-3.c [2023-03-31 22:34:31,900 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 22:34:31,900 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 22:34:31,965 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 22:34:31,972 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=FINITE_AUTOMATA, 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;@ad464ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 22:34:31,972 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 22:34:31,977 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 107 states have (on average 1.9532710280373833) internal successors, (209), 108 states have internal predecessors, (209), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 22:34:31,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-03-31 22:34:31,985 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:34:31,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:34:31,987 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:34:31,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:34:31,994 INFO L85 PathProgramCache]: Analyzing trace with hash 861956158, now seen corresponding path program 1 times [2023-03-31 22:34:32,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:34:32,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362673151] [2023-03-31 22:34:32,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:34:32,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:34:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:34:32,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:34:32,191 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:34:32,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362673151] [2023-03-31 22:34:32,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362673151] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:34:32,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:34:32,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-03-31 22:34:32,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568473037] [2023-03-31 22:34:32,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:34:32,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-03-31 22:34:32,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:34:32,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-03-31 22:34:32,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 22:34:32,234 INFO L87 Difference]: Start difference. First operand has 113 states, 107 states have (on average 1.9532710280373833) internal successors, (209), 108 states have internal predecessors, (209), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:32,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:34:32,288 INFO L93 Difference]: Finished difference Result 221 states and 421 transitions. [2023-03-31 22:34:32,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-03-31 22:34:32,290 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-03-31 22:34:32,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:34:32,301 INFO L225 Difference]: With dead ends: 221 [2023-03-31 22:34:32,301 INFO L226 Difference]: Without dead ends: 103 [2023-03-31 22:34:32,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 22:34:32,311 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:34:32,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 202 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:34:32,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-03-31 22:34:32,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-03-31 22:34:32,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 99 states have (on average 1.6666666666666667) internal successors, (165), 99 states have internal predecessors, (165), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:32,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 168 transitions. [2023-03-31 22:34:32,352 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 168 transitions. Word has length 12 [2023-03-31 22:34:32,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:34:32,353 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 168 transitions. [2023-03-31 22:34:32,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:32,353 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 168 transitions. [2023-03-31 22:34:32,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-03-31 22:34:32,354 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:34:32,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:34:32,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 22:34:32,354 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:34:32,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:34:32,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1483324643, now seen corresponding path program 1 times [2023-03-31 22:34:32,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:34:32,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937964706] [2023-03-31 22:34:32,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:34:32,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:34:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:34:32,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:34:32,463 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:34:32,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937964706] [2023-03-31 22:34:32,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937964706] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:34:32,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:34:32,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 22:34:32,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250753387] [2023-03-31 22:34:32,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:34:32,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 22:34:32,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:34:32,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 22:34:32,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:34:32,466 INFO L87 Difference]: Start difference. First operand 103 states and 168 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:32,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:34:32,511 INFO L93 Difference]: Finished difference Result 204 states and 335 transitions. [2023-03-31 22:34:32,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 22:34:32,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-03-31 22:34:32,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:34:32,513 INFO L225 Difference]: With dead ends: 204 [2023-03-31 22:34:32,513 INFO L226 Difference]: Without dead ends: 106 [2023-03-31 22:34:32,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:34:32,515 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 4 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:34:32,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 312 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:34:32,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-03-31 22:34:32,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-03-31 22:34:32,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 102 states have (on average 1.6470588235294117) internal successors, (168), 102 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:32,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 171 transitions. [2023-03-31 22:34:32,524 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 171 transitions. Word has length 13 [2023-03-31 22:34:32,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:34:32,525 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 171 transitions. [2023-03-31 22:34:32,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:32,525 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 171 transitions. [2023-03-31 22:34:32,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-03-31 22:34:32,526 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:34:32,526 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:34:32,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 22:34:32,526 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:34:32,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:34:32,527 INFO L85 PathProgramCache]: Analyzing trace with hash 976712705, now seen corresponding path program 1 times [2023-03-31 22:34:32,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:34:32,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905179566] [2023-03-31 22:34:32,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:34:32,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:34:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:34:32,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:34:32,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:34:32,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905179566] [2023-03-31 22:34:32,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905179566] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:34:32,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:34:32,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 22:34:32,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160980021] [2023-03-31 22:34:32,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:34:32,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 22:34:32,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:34:32,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 22:34:32,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 22:34:32,924 INFO L87 Difference]: Start difference. First operand 106 states and 171 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:33,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:34:33,164 INFO L93 Difference]: Finished difference Result 208 states and 337 transitions. [2023-03-31 22:34:33,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 22:34:33,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-03-31 22:34:33,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:34:33,168 INFO L225 Difference]: With dead ends: 208 [2023-03-31 22:34:33,168 INFO L226 Difference]: Without dead ends: 189 [2023-03-31 22:34:33,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 22:34:33,170 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 140 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 22:34:33,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 379 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 22:34:33,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-03-31 22:34:33,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 175. [2023-03-31 22:34:33,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 171 states have (on average 1.6432748538011697) internal successors, (281), 171 states have internal predecessors, (281), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:33,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 284 transitions. [2023-03-31 22:34:33,183 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 284 transitions. Word has length 18 [2023-03-31 22:34:33,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:34:33,183 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 284 transitions. [2023-03-31 22:34:33,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:33,184 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 284 transitions. [2023-03-31 22:34:33,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-03-31 22:34:33,184 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:34:33,184 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:34:33,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 22:34:33,185 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:34:33,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:34:33,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1330397216, now seen corresponding path program 1 times [2023-03-31 22:34:33,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:34:33,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250461442] [2023-03-31 22:34:33,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:34:33,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:34:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:34:33,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:34:33,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:34:33,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250461442] [2023-03-31 22:34:33,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250461442] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:34:33,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:34:33,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 22:34:33,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341619208] [2023-03-31 22:34:33,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:34:33,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 22:34:33,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:34:33,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 22:34:33,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:34:33,222 INFO L87 Difference]: Start difference. First operand 175 states and 284 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:33,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:34:33,251 INFO L93 Difference]: Finished difference Result 296 states and 480 transitions. [2023-03-31 22:34:33,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 22:34:33,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-03-31 22:34:33,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:34:33,254 INFO L225 Difference]: With dead ends: 296 [2023-03-31 22:34:33,254 INFO L226 Difference]: Without dead ends: 127 [2023-03-31 22:34:33,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:34:33,265 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 30 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:34:33,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 287 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:34:33,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-03-31 22:34:33,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2023-03-31 22:34:33,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 121 states have (on average 1.603305785123967) internal successors, (194), 121 states have internal predecessors, (194), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:33,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 197 transitions. [2023-03-31 22:34:33,278 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 197 transitions. Word has length 19 [2023-03-31 22:34:33,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:34:33,279 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 197 transitions. [2023-03-31 22:34:33,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:33,279 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 197 transitions. [2023-03-31 22:34:33,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-03-31 22:34:33,280 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:34:33,280 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:34:33,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 22:34:33,280 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:34:33,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:34:33,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1279696508, now seen corresponding path program 1 times [2023-03-31 22:34:33,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:34:33,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355252630] [2023-03-31 22:34:33,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:34:33,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:34:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:34:33,377 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-31 22:34:33,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:34:33,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355252630] [2023-03-31 22:34:33,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355252630] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:34:33,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:34:33,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 22:34:33,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307981020] [2023-03-31 22:34:33,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:34:33,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 22:34:33,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:34:33,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 22:34:33,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:34:33,380 INFO L87 Difference]: Start difference. First operand 125 states and 197 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:33,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:34:33,411 INFO L93 Difference]: Finished difference Result 251 states and 398 transitions. [2023-03-31 22:34:33,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 22:34:33,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2023-03-31 22:34:33,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:34:33,414 INFO L225 Difference]: With dead ends: 251 [2023-03-31 22:34:33,414 INFO L226 Difference]: Without dead ends: 132 [2023-03-31 22:34:33,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:34:33,417 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 32 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:34:33,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 286 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:34:33,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-03-31 22:34:33,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2023-03-31 22:34:33,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 126 states have (on average 1.5793650793650793) internal successors, (199), 126 states have internal predecessors, (199), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:33,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 202 transitions. [2023-03-31 22:34:33,438 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 202 transitions. Word has length 24 [2023-03-31 22:34:33,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:34:33,438 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 202 transitions. [2023-03-31 22:34:33,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:33,439 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 202 transitions. [2023-03-31 22:34:33,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-03-31 22:34:33,439 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:34:33,440 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:34:33,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 22:34:33,440 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:34:33,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:34:33,440 INFO L85 PathProgramCache]: Analyzing trace with hash 683289573, now seen corresponding path program 1 times [2023-03-31 22:34:33,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:34:33,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127304698] [2023-03-31 22:34:33,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:34:33,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:34:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:34:33,716 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:34:33,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:34:33,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127304698] [2023-03-31 22:34:33,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127304698] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:34:33,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509016320] [2023-03-31 22:34:33,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:34:33,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:34:33,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:34:33,723 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) [2023-03-31 22:34:33,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 22:34:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:34:33,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2023-03-31 22:34:33,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:34:33,882 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:34:33,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 22:34:34,014 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:34:34,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509016320] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 22:34:34,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [311645069] [2023-03-31 22:34:34,032 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-03-31 22:34:34,033 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 22:34:34,036 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 22:34:34,040 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 22:34:34,041 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 22:34:34,182 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 29 for LOIs [2023-03-31 22:34:35,133 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-03-31 22:34:35,150 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 22:34:37,754 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2238#(and (<= main_~P6~0 2147483647) (= main_~method_id~0 2) (= 6 ~m_recv_ack_1_1~0) (= 2 ~m_msg_2~0) (= ~m_msg_1_1~0 4) (<= 0 (+ main_~P4~0 2147483648)) (= 7 ~m_recv_ack_1_2~0) (<= main_~P1~0 2147483647) (<= 0 (+ main_~P7~0 2147483648)) (<= main_~P4~0 2147483647) (= ~m_msg_1_2~0 5) (<= 0 (+ main_~P6~0 2147483648)) (= main_~q~0 3) (= ~m_Protocol~0 1) (<= main_~P3~0 2147483647) (<= 0 (+ main_~P2~0 2147483648)) (= (mod main_~P1~0 2) 0) (<= main_~this_expect~0 1) (<= 0 (+ main_~P3~0 2147483648)) (<= main_~P9~0 2147483647) (<= 0 main_~this_expect~0) (<= 0 (+ main_~P9~0 2147483648)) (= (mod main_~this_expect~0 2) 0) (<= 0 (+ main_~P5~0 2147483648)) (<= main_~P5~0 2147483647) (= 3 ~m_recv_ack_2~0) (= |#NULL.offset| 0) (<= 0 (+ main_~P8~0 2147483648)) (<= 0 (+ main_~P1~0 2147483648)) (<= main_~P7~0 2147483647) (<= 0 |#StackHeapBarrier|) (= (mod main_~this_buffer_empty~0 4294967296) 1) (<= main_~P8~0 2147483647) (<= main_~P2~0 2147483647) (= |#NULL.base| 0))' at error location [2023-03-31 22:34:37,754 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 22:34:37,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 22:34:37,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2023-03-31 22:34:37,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655944778] [2023-03-31 22:34:37,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 22:34:37,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-31 22:34:37,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:34:37,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-31 22:34:37,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2023-03-31 22:34:37,757 INFO L87 Difference]: Start difference. First operand 130 states and 202 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:38,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:34:38,734 INFO L93 Difference]: Finished difference Result 613 states and 947 transitions. [2023-03-31 22:34:38,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-03-31 22:34:38,735 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2023-03-31 22:34:38,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:34:38,737 INFO L225 Difference]: With dead ends: 613 [2023-03-31 22:34:38,737 INFO L226 Difference]: Without dead ends: 439 [2023-03-31 22:34:38,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=236, Invalid=1656, Unknown=0, NotChecked=0, Total=1892 [2023-03-31 22:34:38,739 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 939 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 1955 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-31 22:34:38,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 1955 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-31 22:34:38,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2023-03-31 22:34:38,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 368. [2023-03-31 22:34:38,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 364 states have (on average 1.585164835164835) internal successors, (577), 364 states have internal predecessors, (577), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:38,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 580 transitions. [2023-03-31 22:34:38,757 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 580 transitions. Word has length 26 [2023-03-31 22:34:38,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:34:38,758 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 580 transitions. [2023-03-31 22:34:38,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:38,758 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 580 transitions. [2023-03-31 22:34:38,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-03-31 22:34:38,761 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:34:38,761 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:34:38,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 22:34:38,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-03-31 22:34:38,967 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:34:38,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:34:38,967 INFO L85 PathProgramCache]: Analyzing trace with hash -496731033, now seen corresponding path program 1 times [2023-03-31 22:34:38,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:34:38,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377526856] [2023-03-31 22:34:38,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:34:38,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:34:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:34:39,242 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:34:39,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:34:39,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377526856] [2023-03-31 22:34:39,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377526856] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:34:39,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126767503] [2023-03-31 22:34:39,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:34:39,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:34:39,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:34:39,244 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) [2023-03-31 22:34:39,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 22:34:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:34:39,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-31 22:34:39,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:34:39,377 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-31 22:34:39,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 22:34:39,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126767503] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:34:39,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 22:34:39,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-31 22:34:39,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719079286] [2023-03-31 22:34:39,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:34:39,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 22:34:39,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:34:39,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 22:34:39,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 22:34:39,379 INFO L87 Difference]: Start difference. First operand 368 states and 580 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:39,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:34:39,398 INFO L93 Difference]: Finished difference Result 371 states and 582 transitions. [2023-03-31 22:34:39,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 22:34:39,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2023-03-31 22:34:39,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:34:39,401 INFO L225 Difference]: With dead ends: 371 [2023-03-31 22:34:39,401 INFO L226 Difference]: Without dead ends: 364 [2023-03-31 22:34:39,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 22:34:39,402 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 147 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:34:39,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 169 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:34:39,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-03-31 22:34:39,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 363. [2023-03-31 22:34:39,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 359 states have (on average 1.565459610027855) internal successors, (562), 359 states have internal predecessors, (562), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:39,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 565 transitions. [2023-03-31 22:34:39,418 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 565 transitions. Word has length 30 [2023-03-31 22:34:39,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:34:39,420 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 565 transitions. [2023-03-31 22:34:39,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:39,425 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 565 transitions. [2023-03-31 22:34:39,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-03-31 22:34:39,429 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:34:39,430 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:34:39,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 22:34:39,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-03-31 22:34:39,635 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:34:39,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:34:39,636 INFO L85 PathProgramCache]: Analyzing trace with hash 32777437, now seen corresponding path program 1 times [2023-03-31 22:34:39,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:34:39,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116112121] [2023-03-31 22:34:39,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:34:39,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:34:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:34:39,685 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-03-31 22:34:39,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:34:39,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116112121] [2023-03-31 22:34:39,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116112121] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:34:39,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:34:39,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 22:34:39,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258356383] [2023-03-31 22:34:39,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:34:39,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 22:34:39,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:34:39,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 22:34:39,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:34:39,687 INFO L87 Difference]: Start difference. First operand 363 states and 565 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:39,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:34:39,718 INFO L93 Difference]: Finished difference Result 604 states and 937 transitions. [2023-03-31 22:34:39,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 22:34:39,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2023-03-31 22:34:39,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:34:39,720 INFO L225 Difference]: With dead ends: 604 [2023-03-31 22:34:39,720 INFO L226 Difference]: Without dead ends: 247 [2023-03-31 22:34:39,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:34:39,722 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 61 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:34:39,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 188 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:34:39,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-03-31 22:34:39,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 245. [2023-03-31 22:34:39,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 241 states have (on average 1.5020746887966805) internal successors, (362), 241 states have internal predecessors, (362), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:39,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 365 transitions. [2023-03-31 22:34:39,734 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 365 transitions. Word has length 33 [2023-03-31 22:34:39,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:34:39,734 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 365 transitions. [2023-03-31 22:34:39,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:39,735 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 365 transitions. [2023-03-31 22:34:39,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-03-31 22:34:39,736 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:34:39,736 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:34:39,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 22:34:39,736 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:34:39,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:34:39,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1683281554, now seen corresponding path program 1 times [2023-03-31 22:34:39,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:34:39,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571999509] [2023-03-31 22:34:39,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:34:39,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:34:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:34:39,788 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-03-31 22:34:39,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:34:39,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571999509] [2023-03-31 22:34:39,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571999509] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:34:39,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:34:39,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 22:34:39,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854976690] [2023-03-31 22:34:39,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:34:39,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 22:34:39,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:34:39,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 22:34:39,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:34:39,791 INFO L87 Difference]: Start difference. First operand 245 states and 365 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:39,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:34:39,819 INFO L93 Difference]: Finished difference Result 428 states and 636 transitions. [2023-03-31 22:34:39,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 22:34:39,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2023-03-31 22:34:39,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:34:39,821 INFO L225 Difference]: With dead ends: 428 [2023-03-31 22:34:39,821 INFO L226 Difference]: Without dead ends: 228 [2023-03-31 22:34:39,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:34:39,823 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 28 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:34:39,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 216 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:34:39,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-03-31 22:34:39,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 226. [2023-03-31 22:34:39,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 222 states have (on average 1.4594594594594594) internal successors, (324), 222 states have internal predecessors, (324), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:39,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 327 transitions. [2023-03-31 22:34:39,834 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 327 transitions. Word has length 40 [2023-03-31 22:34:39,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:34:39,835 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 327 transitions. [2023-03-31 22:34:39,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:39,835 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 327 transitions. [2023-03-31 22:34:39,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-03-31 22:34:39,836 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:34:39,836 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 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] [2023-03-31 22:34:39,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 22:34:39,837 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:34:39,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:34:39,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1958878163, now seen corresponding path program 1 times [2023-03-31 22:34:39,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:34:39,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309634845] [2023-03-31 22:34:39,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:34:39,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:34:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:34:39,912 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-03-31 22:34:39,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:34:39,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309634845] [2023-03-31 22:34:39,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309634845] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:34:39,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:34:39,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 22:34:39,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314856023] [2023-03-31 22:34:39,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:34:39,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 22:34:39,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:34:39,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 22:34:39,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:34:39,914 INFO L87 Difference]: Start difference. First operand 226 states and 327 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:39,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:34:39,940 INFO L93 Difference]: Finished difference Result 308 states and 445 transitions. [2023-03-31 22:34:39,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 22:34:39,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2023-03-31 22:34:39,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:34:39,943 INFO L225 Difference]: With dead ends: 308 [2023-03-31 22:34:39,943 INFO L226 Difference]: Without dead ends: 146 [2023-03-31 22:34:39,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:34:39,944 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 27 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:34:39,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 188 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:34:39,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-03-31 22:34:39,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2023-03-31 22:34:39,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 140 states have (on average 1.4214285714285715) internal successors, (199), 140 states have internal predecessors, (199), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:39,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 202 transitions. [2023-03-31 22:34:39,954 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 202 transitions. Word has length 49 [2023-03-31 22:34:39,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:34:39,955 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 202 transitions. [2023-03-31 22:34:39,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:39,955 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 202 transitions. [2023-03-31 22:34:39,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-03-31 22:34:39,955 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:34:39,955 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:34:39,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-03-31 22:34:39,955 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:34:39,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:34:39,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1549477649, now seen corresponding path program 1 times [2023-03-31 22:34:39,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:34:39,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658817394] [2023-03-31 22:34:39,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:34:39,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:34:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:34:40,144 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-03-31 22:34:40,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:34:40,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658817394] [2023-03-31 22:34:40,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658817394] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:34:40,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955381476] [2023-03-31 22:34:40,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:34:40,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:34:40,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:34:40,146 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) [2023-03-31 22:34:40,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 22:34:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:34:40,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 25 conjunts are in the unsatisfiable core [2023-03-31 22:34:40,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:34:40,388 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:34:40,389 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 22:34:40,573 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-31 22:34:40,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955381476] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 22:34:40,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [324957583] [2023-03-31 22:34:40,578 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2023-03-31 22:34:40,578 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 22:34:40,579 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 22:34:40,579 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 22:34:40,579 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 22:34:40,634 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 29 for LOIs [2023-03-31 22:34:42,929 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-03-31 22:34:42,949 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 22:34:45,699 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6662#(and (<= main_~P6~0 2147483647) (= 5 main_~q~0) (= main_~P3~0 0) (<= 0 (+ main_~P4~0 2147483648)) (<= 0 (+ main_~P7~0 2147483648)) (<= main_~P4~0 2147483647) (<= 0 (+ main_~P6~0 2147483648)) (<= 0 (+ main_~P2~0 2147483648)) (<= main_~P9~0 2147483647) (<= 0 (+ main_~P9~0 2147483648)) (= main_~P1~0 0) (not (= (mod main_~this_buffer_empty~0 4294967296) 1)) (<= 0 (+ main_~P5~0 2147483648)) (<= main_~P5~0 2147483647) (= main_~method_id~0 3) (<= 0 (+ main_~P8~0 2147483648)) (= (mod (+ main_~this_expect~0 1) 2) 0) (<= main_~P7~0 2147483647) (<= main_~P8~0 2147483647) (<= main_~P2~0 2147483647))' at error location [2023-03-31 22:34:45,699 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 22:34:45,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 22:34:45,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 15 [2023-03-31 22:34:45,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988007954] [2023-03-31 22:34:45,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 22:34:45,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-03-31 22:34:45,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:34:45,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-03-31 22:34:45,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=1797, Unknown=0, NotChecked=0, Total=2070 [2023-03-31 22:34:45,701 INFO L87 Difference]: Start difference. First operand 144 states and 202 transitions. Second operand has 15 states, 15 states have (on average 8.0) internal successors, (120), 15 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:45,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:34:45,949 INFO L93 Difference]: Finished difference Result 192 states and 265 transitions. [2023-03-31 22:34:45,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 22:34:45,950 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.0) internal successors, (120), 15 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2023-03-31 22:34:45,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:34:45,951 INFO L225 Difference]: With dead ends: 192 [2023-03-31 22:34:45,951 INFO L226 Difference]: Without dead ends: 184 [2023-03-31 22:34:45,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=307, Invalid=2143, Unknown=0, NotChecked=0, Total=2450 [2023-03-31 22:34:45,952 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 373 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 22:34:45,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 756 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 22:34:45,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-03-31 22:34:45,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 177. [2023-03-31 22:34:45,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 173 states have (on average 1.4046242774566473) internal successors, (243), 173 states have internal predecessors, (243), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:45,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 246 transitions. [2023-03-31 22:34:45,964 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 246 transitions. Word has length 50 [2023-03-31 22:34:45,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:34:45,965 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 246 transitions. [2023-03-31 22:34:45,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.0) internal successors, (120), 15 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:45,965 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 246 transitions. [2023-03-31 22:34:45,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-03-31 22:34:45,966 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:34:45,966 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 4, 4, 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] [2023-03-31 22:34:45,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-31 22:34:46,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:34:46,173 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:34:46,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:34:46,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1723435239, now seen corresponding path program 1 times [2023-03-31 22:34:46,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:34:46,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726620542] [2023-03-31 22:34:46,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:34:46,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:34:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:34:46,682 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 12 proven. 64 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-31 22:34:46,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:34:46,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726620542] [2023-03-31 22:34:46,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726620542] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:34:46,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013591221] [2023-03-31 22:34:46,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:34:46,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:34:46,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:34:46,684 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) [2023-03-31 22:34:46,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-31 22:34:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:34:46,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 25 conjunts are in the unsatisfiable core [2023-03-31 22:34:46,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:34:47,018 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 12 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:34:47,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 22:34:47,295 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 12 proven. 50 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-03-31 22:34:47,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013591221] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 22:34:47,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1627237204] [2023-03-31 22:34:47,298 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2023-03-31 22:34:47,298 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 22:34:47,298 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 22:34:47,299 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 22:34:47,299 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 22:34:47,340 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 29 for LOIs [2023-03-31 22:34:51,230 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-03-31 22:34:51,238 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 22:34:53,567 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7541#(and (<= main_~P6~0 2147483647) (<= 0 (+ main_~P4~0 2147483648)) (<= 0 (+ main_~P7~0 2147483648)) (<= main_~P4~0 2147483647) (<= 0 (+ main_~P6~0 2147483648)) (= main_~q~0 3) (<= 0 (+ main_~P2~0 2147483648)) (<= main_~P9~0 2147483647) (<= 0 (+ main_~P9~0 2147483648)) (= main_~P1~0 0) (or (and (= main_~P3~0 0) (= (mod main_~this_buffer_empty~0 4294967296) 1)) (and (= main_~P3~0 0) (not (= (mod (+ main_~this_expect~0 1) 2) 0)))) (<= 0 (+ main_~P5~0 2147483648)) (<= main_~P5~0 2147483647) (= main_~method_id~0 3) (<= 0 (+ main_~P8~0 2147483648)) (<= main_~P7~0 2147483647) (<= main_~P8~0 2147483647) (<= main_~P2~0 2147483647))' at error location [2023-03-31 22:34:53,567 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 22:34:53,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 22:34:53,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 17 [2023-03-31 22:34:53,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888872704] [2023-03-31 22:34:53,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 22:34:53,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-03-31 22:34:53,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:34:53,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-03-31 22:34:53,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=2370, Unknown=0, NotChecked=0, Total=2652 [2023-03-31 22:34:53,570 INFO L87 Difference]: Start difference. First operand 177 states and 246 transitions. Second operand has 17 states, 17 states have (on average 9.529411764705882) internal successors, (162), 17 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:53,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:34:53,668 INFO L93 Difference]: Finished difference Result 195 states and 272 transitions. [2023-03-31 22:34:53,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-03-31 22:34:53,668 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 9.529411764705882) internal successors, (162), 17 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-03-31 22:34:53,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:34:53,669 INFO L225 Difference]: With dead ends: 195 [2023-03-31 22:34:53,669 INFO L226 Difference]: Without dead ends: 0 [2023-03-31 22:34:53,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=282, Invalid=2370, Unknown=0, NotChecked=0, Total=2652 [2023-03-31 22:34:53,670 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 207 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 22:34:53,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1662 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 22:34:53,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-03-31 22:34:53,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-03-31 22:34:53,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-03-31 22:34:53,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-03-31 22:34:53,672 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2023-03-31 22:34:53,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:34:53,672 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-03-31 22:34:53,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.529411764705882) internal successors, (162), 17 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:34:53,672 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-03-31 22:34:53,672 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-03-31 22:34:53,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 22:34:53,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-31 22:34:53,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:34:53,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-03-31 22:34:54,109 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2023-03-31 22:34:54,109 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 4) no Hoare annotation was computed. [2023-03-31 22:34:54,109 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 22:34:54,109 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-03-31 22:34:54,109 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-03-31 22:34:54,109 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-03-31 22:34:54,109 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-03-31 22:34:54,109 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 22:34:54,110 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 16 568) no Hoare annotation was computed. [2023-03-31 22:34:54,110 INFO L899 garLoopResultBuilder]: For program point L432(lines 432 434) no Hoare annotation was computed. [2023-03-31 22:34:54,110 INFO L899 garLoopResultBuilder]: For program point L300(lines 300 302) no Hoare annotation was computed. [2023-03-31 22:34:54,110 INFO L899 garLoopResultBuilder]: For program point L168(lines 168 170) no Hoare annotation was computed. [2023-03-31 22:34:54,110 INFO L899 garLoopResultBuilder]: For program point L532(lines 532 534) no Hoare annotation was computed. [2023-03-31 22:34:54,110 INFO L899 garLoopResultBuilder]: For program point L400(lines 400 402) no Hoare annotation was computed. [2023-03-31 22:34:54,110 INFO L899 garLoopResultBuilder]: For program point L268(lines 268 270) no Hoare annotation was computed. [2023-03-31 22:34:54,110 INFO L899 garLoopResultBuilder]: For program point L500(lines 500 502) no Hoare annotation was computed. [2023-03-31 22:34:54,110 INFO L899 garLoopResultBuilder]: For program point L368(lines 368 370) no Hoare annotation was computed. [2023-03-31 22:34:54,110 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 16 568) no Hoare annotation was computed. [2023-03-31 22:34:54,110 INFO L899 garLoopResultBuilder]: For program point L468(lines 468 470) no Hoare annotation was computed. [2023-03-31 22:34:54,110 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 60) no Hoare annotation was computed. [2023-03-31 22:34:54,110 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 57) no Hoare annotation was computed. [2023-03-31 22:34:54,110 INFO L899 garLoopResultBuilder]: For program point L142(lines 142 157) no Hoare annotation was computed. [2023-03-31 22:34:54,110 INFO L899 garLoopResultBuilder]: For program point L242(lines 242 257) no Hoare annotation was computed. [2023-03-31 22:34:54,111 INFO L899 garLoopResultBuilder]: For program point L110(lines 110 125) no Hoare annotation was computed. [2023-03-31 22:34:54,111 INFO L899 garLoopResultBuilder]: For program point L44(lines 44 55) no Hoare annotation was computed. [2023-03-31 22:34:54,111 INFO L899 garLoopResultBuilder]: For program point L342(lines 342 357) no Hoare annotation was computed. [2023-03-31 22:34:54,111 INFO L899 garLoopResultBuilder]: For program point L210(lines 210 225) no Hoare annotation was computed. [2023-03-31 22:34:54,111 INFO L899 garLoopResultBuilder]: For program point L144(lines 144 155) no Hoare annotation was computed. [2023-03-31 22:34:54,111 INFO L899 garLoopResultBuilder]: For program point L78(lines 78 93) no Hoare annotation was computed. [2023-03-31 22:34:54,111 INFO L899 garLoopResultBuilder]: For program point L442(lines 442 457) no Hoare annotation was computed. [2023-03-31 22:34:54,111 INFO L899 garLoopResultBuilder]: For program point L310(lines 310 325) no Hoare annotation was computed. [2023-03-31 22:34:54,111 INFO L899 garLoopResultBuilder]: For program point L244(lines 244 255) no Hoare annotation was computed. [2023-03-31 22:34:54,111 INFO L899 garLoopResultBuilder]: For program point L178(lines 178 193) no Hoare annotation was computed. [2023-03-31 22:34:54,111 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 123) no Hoare annotation was computed. [2023-03-31 22:34:54,111 INFO L899 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 567) no Hoare annotation was computed. [2023-03-31 22:34:54,111 INFO L899 garLoopResultBuilder]: For program point L542(lines 542 557) no Hoare annotation was computed. [2023-03-31 22:34:54,112 INFO L899 garLoopResultBuilder]: For program point L410(lines 410 425) no Hoare annotation was computed. [2023-03-31 22:34:54,112 INFO L899 garLoopResultBuilder]: For program point L344(lines 344 355) no Hoare annotation was computed. [2023-03-31 22:34:54,112 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 293) no Hoare annotation was computed. [2023-03-31 22:34:54,112 INFO L899 garLoopResultBuilder]: For program point L212(lines 212 223) no Hoare annotation was computed. [2023-03-31 22:34:54,112 INFO L899 garLoopResultBuilder]: For program point L80(lines 80 91) no Hoare annotation was computed. [2023-03-31 22:34:54,112 INFO L899 garLoopResultBuilder]: For program point L510(lines 510 525) no Hoare annotation was computed. [2023-03-31 22:34:54,112 INFO L899 garLoopResultBuilder]: For program point L444(lines 444 455) no Hoare annotation was computed. [2023-03-31 22:34:54,112 INFO L899 garLoopResultBuilder]: For program point L378(lines 378 393) no Hoare annotation was computed. [2023-03-31 22:34:54,112 INFO L899 garLoopResultBuilder]: For program point L312(lines 312 323) no Hoare annotation was computed. [2023-03-31 22:34:54,112 INFO L899 garLoopResultBuilder]: For program point L180(lines 180 191) no Hoare annotation was computed. [2023-03-31 22:34:54,112 INFO L899 garLoopResultBuilder]: For program point L48(lines 48 50) no Hoare annotation was computed. [2023-03-31 22:34:54,112 INFO L899 garLoopResultBuilder]: For program point L544(lines 544 555) no Hoare annotation was computed. [2023-03-31 22:34:54,112 INFO L899 garLoopResultBuilder]: For program point L478(lines 478 493) no Hoare annotation was computed. [2023-03-31 22:34:54,113 INFO L895 garLoopResultBuilder]: At program point L544-2(lines 26 563) the Hoare annotation is: (let ((.cse1 (<= main_~this_expect~0 (* 2 (div main_~this_expect~0 2)))) (.cse0 (= main_~this_buffer_empty~0 1)) (.cse5 (<= main_~this_expect~0 (+ (* (div (+ (- 1) main_~this_expect~0) 2) 2) 1))) (.cse2 (<= 0 (+ main_~P8~0 2147483648))) (.cse3 (<= main_~P8~0 2147483647)) (.cse4 (= main_~this_buffer_empty~0 0))) (or (and .cse0 .cse1 .cse2 (= main_~q~0 1) .cse3) (and .cse4 .cse1 (<= 5 main_~q~0) .cse2 .cse3) (and .cse4 (= main_~q~0 3) .cse5 .cse2 .cse3) (and .cse0 .cse5 .cse2 (= main_~q~0 4) .cse3) (and .cse4 (= main_~this_expect~0 0) (= main_~q~0 0)))) [2023-03-31 22:34:54,113 INFO L899 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2023-03-31 22:34:54,113 INFO L899 garLoopResultBuilder]: For program point L280(lines 280 291) no Hoare annotation was computed. [2023-03-31 22:34:54,113 INFO L899 garLoopResultBuilder]: For program point L148(lines 148 150) no Hoare annotation was computed. [2023-03-31 22:34:54,113 INFO L899 garLoopResultBuilder]: For program point L512(lines 512 523) no Hoare annotation was computed. [2023-03-31 22:34:54,113 INFO L899 garLoopResultBuilder]: For program point L380(lines 380 391) no Hoare annotation was computed. [2023-03-31 22:34:54,113 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 250) no Hoare annotation was computed. [2023-03-31 22:34:54,113 INFO L899 garLoopResultBuilder]: For program point L116(lines 116 118) no Hoare annotation was computed. [2023-03-31 22:34:54,113 INFO L899 garLoopResultBuilder]: For program point L480(lines 480 491) no Hoare annotation was computed. [2023-03-31 22:34:54,113 INFO L899 garLoopResultBuilder]: For program point L348(lines 348 350) no Hoare annotation was computed. [2023-03-31 22:34:54,113 INFO L899 garLoopResultBuilder]: For program point L216(lines 216 218) no Hoare annotation was computed. [2023-03-31 22:34:54,113 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 86) no Hoare annotation was computed. [2023-03-31 22:34:54,113 INFO L895 garLoopResultBuilder]: At program point ERROR(lines 16 568) the Hoare annotation is: false [2023-03-31 22:34:54,114 INFO L899 garLoopResultBuilder]: For program point L448(lines 448 450) no Hoare annotation was computed. [2023-03-31 22:34:54,114 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 318) no Hoare annotation was computed. [2023-03-31 22:34:54,114 INFO L899 garLoopResultBuilder]: For program point L184(lines 184 186) no Hoare annotation was computed. [2023-03-31 22:34:54,114 INFO L899 garLoopResultBuilder]: For program point L548(lines 548 550) no Hoare annotation was computed. [2023-03-31 22:34:54,114 INFO L899 garLoopResultBuilder]: For program point L416(lines 416 418) no Hoare annotation was computed. [2023-03-31 22:34:54,114 INFO L899 garLoopResultBuilder]: For program point L284(lines 284 286) no Hoare annotation was computed. [2023-03-31 22:34:54,114 INFO L899 garLoopResultBuilder]: For program point L516(lines 516 518) no Hoare annotation was computed. [2023-03-31 22:34:54,114 INFO L899 garLoopResultBuilder]: For program point L384(lines 384 386) no Hoare annotation was computed. [2023-03-31 22:34:54,114 INFO L899 garLoopResultBuilder]: For program point L484(lines 484 486) no Hoare annotation was computed. [2023-03-31 22:34:54,114 INFO L895 garLoopResultBuilder]: At program point L26-2(lines 26 563) the Hoare annotation is: (let ((.cse0 (= main_~this_buffer_empty~0 0))) (or (and .cse0 (<= main_~this_expect~0 (* 2 (div main_~this_expect~0 2))) (<= 5 main_~q~0) (<= 0 (+ main_~P8~0 2147483648)) (<= main_~P8~0 2147483647)) (and .cse0 (= main_~this_expect~0 0) (= main_~q~0 0)))) [2023-03-31 22:34:54,114 INFO L899 garLoopResultBuilder]: For program point L26-3(lines 26 563) no Hoare annotation was computed. [2023-03-31 22:34:54,114 INFO L899 garLoopResultBuilder]: For program point L126(lines 126 141) no Hoare annotation was computed. [2023-03-31 22:34:54,114 INFO L899 garLoopResultBuilder]: For program point L226(lines 226 241) no Hoare annotation was computed. [2023-03-31 22:34:54,114 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 109) no Hoare annotation was computed. [2023-03-31 22:34:54,114 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 160) no Hoare annotation was computed. [2023-03-31 22:34:54,114 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 341) no Hoare annotation was computed. [2023-03-31 22:34:54,115 INFO L899 garLoopResultBuilder]: For program point L194(lines 194 209) no Hoare annotation was computed. [2023-03-31 22:34:54,115 INFO L899 garLoopResultBuilder]: For program point L161(lines 161 260) no Hoare annotation was computed. [2023-03-31 22:34:54,115 INFO L899 garLoopResultBuilder]: For program point L128(lines 128 139) no Hoare annotation was computed. [2023-03-31 22:34:54,115 INFO L899 garLoopResultBuilder]: For program point L62(lines 62 77) no Hoare annotation was computed. [2023-03-31 22:34:54,115 INFO L899 garLoopResultBuilder]: For program point L426(lines 426 441) no Hoare annotation was computed. [2023-03-31 22:34:54,115 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 16 568) the Hoare annotation is: true [2023-03-31 22:34:54,115 INFO L899 garLoopResultBuilder]: For program point L294(lines 294 309) no Hoare annotation was computed. [2023-03-31 22:34:54,115 INFO L899 garLoopResultBuilder]: For program point L261(lines 261 360) no Hoare annotation was computed. [2023-03-31 22:34:54,115 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 239) no Hoare annotation was computed. [2023-03-31 22:34:54,115 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 177) no Hoare annotation was computed. [2023-03-31 22:34:54,115 INFO L899 garLoopResultBuilder]: For program point L96(lines 96 107) no Hoare annotation was computed. [2023-03-31 22:34:54,115 INFO L899 garLoopResultBuilder]: For program point L526(lines 526 541) no Hoare annotation was computed. [2023-03-31 22:34:54,115 INFO L899 garLoopResultBuilder]: For program point L394(lines 394 409) no Hoare annotation was computed. [2023-03-31 22:34:54,115 INFO L899 garLoopResultBuilder]: For program point L361(lines 361 460) no Hoare annotation was computed. [2023-03-31 22:34:54,115 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 339) no Hoare annotation was computed. [2023-03-31 22:34:54,115 INFO L899 garLoopResultBuilder]: For program point L262(lines 262 277) no Hoare annotation was computed. [2023-03-31 22:34:54,115 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 207) no Hoare annotation was computed. [2023-03-31 22:34:54,115 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 75) no Hoare annotation was computed. [2023-03-31 22:34:54,115 INFO L899 garLoopResultBuilder]: For program point L494(lines 494 509) no Hoare annotation was computed. [2023-03-31 22:34:54,116 INFO L899 garLoopResultBuilder]: For program point L461(lines 461 560) no Hoare annotation was computed. [2023-03-31 22:34:54,116 INFO L899 garLoopResultBuilder]: For program point L428(lines 428 439) no Hoare annotation was computed. [2023-03-31 22:34:54,116 INFO L899 garLoopResultBuilder]: For program point L362(lines 362 377) no Hoare annotation was computed. [2023-03-31 22:34:54,116 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 307) no Hoare annotation was computed. [2023-03-31 22:34:54,116 INFO L899 garLoopResultBuilder]: For program point L164(lines 164 175) no Hoare annotation was computed. [2023-03-31 22:34:54,116 INFO L899 garLoopResultBuilder]: For program point L528(lines 528 539) no Hoare annotation was computed. [2023-03-31 22:34:54,116 INFO L899 garLoopResultBuilder]: For program point L462(lines 462 477) no Hoare annotation was computed. [2023-03-31 22:34:54,116 INFO L899 garLoopResultBuilder]: For program point L396(lines 396 407) no Hoare annotation was computed. [2023-03-31 22:34:54,116 INFO L899 garLoopResultBuilder]: For program point L264(lines 264 275) no Hoare annotation was computed. [2023-03-31 22:34:54,116 INFO L899 garLoopResultBuilder]: For program point L132(lines 132 134) no Hoare annotation was computed. [2023-03-31 22:34:54,116 INFO L899 garLoopResultBuilder]: For program point L496(lines 496 507) no Hoare annotation was computed. [2023-03-31 22:34:54,116 INFO L899 garLoopResultBuilder]: For program point L364(lines 364 375) no Hoare annotation was computed. [2023-03-31 22:34:54,116 INFO L899 garLoopResultBuilder]: For program point L232(lines 232 234) no Hoare annotation was computed. [2023-03-31 22:34:54,116 INFO L899 garLoopResultBuilder]: For program point L100(lines 100 102) no Hoare annotation was computed. [2023-03-31 22:34:54,116 INFO L899 garLoopResultBuilder]: For program point L464(lines 464 475) no Hoare annotation was computed. [2023-03-31 22:34:54,117 INFO L899 garLoopResultBuilder]: For program point L332(lines 332 334) no Hoare annotation was computed. [2023-03-31 22:34:54,117 INFO L899 garLoopResultBuilder]: For program point L200(lines 200 202) no Hoare annotation was computed. [2023-03-31 22:34:54,117 INFO L899 garLoopResultBuilder]: For program point L68(lines 68 70) no Hoare annotation was computed. [2023-03-31 22:34:54,121 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:34:54,123 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 22:34:54,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 10:34:54 BoogieIcfgContainer [2023-03-31 22:34:54,148 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 22:34:54,149 INFO L158 Benchmark]: Toolchain (without parser) took 23613.53ms. Allocated memory was 314.6MB in the beginning and 653.3MB in the end (delta: 338.7MB). Free memory was 265.7MB in the beginning and 495.5MB in the end (delta: -229.9MB). Peak memory consumption was 109.7MB. Max. memory is 8.0GB. [2023-03-31 22:34:54,149 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory was 150.3MB in the beginning and 150.2MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 22:34:54,149 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.35ms. Allocated memory is still 314.6MB. Free memory was 265.3MB in the beginning and 246.0MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-03-31 22:34:54,150 INFO L158 Benchmark]: Boogie Preprocessor took 99.20ms. Allocated memory is still 314.6MB. Free memory was 246.0MB in the beginning and 242.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-03-31 22:34:54,150 INFO L158 Benchmark]: RCFGBuilder took 890.61ms. Allocated memory is still 314.6MB. Free memory was 242.6MB in the beginning and 263.2MB in the end (delta: -20.6MB). Peak memory consumption was 31.1MB. Max. memory is 8.0GB. [2023-03-31 22:34:54,151 INFO L158 Benchmark]: TraceAbstraction took 22275.10ms. Allocated memory was 314.6MB in the beginning and 653.3MB in the end (delta: 338.7MB). Free memory was 262.7MB in the beginning and 495.5MB in the end (delta: -232.9MB). Peak memory consumption was 105.8MB. Max. memory is 8.0GB. [2023-03-31 22:34:54,152 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory was 150.3MB in the beginning and 150.2MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 343.35ms. Allocated memory is still 314.6MB. Free memory was 265.3MB in the beginning and 246.0MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 99.20ms. Allocated memory is still 314.6MB. Free memory was 246.0MB in the beginning and 242.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 890.61ms. Allocated memory is still 314.6MB. Free memory was 242.6MB in the beginning and 263.2MB in the end (delta: -20.6MB). Peak memory consumption was 31.1MB. Max. memory is 8.0GB. * TraceAbstraction took 22275.10ms. Allocated memory was 314.6MB in the beginning and 653.3MB in the end (delta: 338.7MB). Free memory was 262.7MB in the beginning and 495.5MB in the end (delta: -232.9MB). Peak memory consumption was 105.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 567]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 115 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.2s, OverallIterations: 12, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1988 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1988 mSDsluCounter, 6600 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4626 mSDsCounter, 283 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 991 IncrementalHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 283 mSolverCounterUnsat, 1974 mSDtfsCounter, 991 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 535 GetRequests, 382 SyntacticMatches, 1 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2244 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=368occurred in iteration=6, InterpolantAutomatonStates: 69, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 103 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 21 NumberOfFragments, 145 HoareAnnotationTreeSize, 7 FomulaSimplifications, 863 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 351 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 558 NumberOfCodeBlocks, 558 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 684 ConstructedInterpolants, 0 QuantifiedInterpolants, 5017 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1065 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 19 InterpolantComputations, 9 PerfectInterpolantSequences, 197/449 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: ((((this_buffer_empty == 0 && this_expect <= 2 * (this_expect / 2)) && 5 <= q) && 0 <= P8 + 2147483648) && P8 <= 2147483647) || ((this_buffer_empty == 0 && this_expect == 0) && q == 0) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (((((((this_buffer_empty == 1 && this_expect <= 2 * (this_expect / 2)) && 0 <= P8 + 2147483648) && q == 1) && P8 <= 2147483647) || ((((this_buffer_empty == 0 && this_expect <= 2 * (this_expect / 2)) && 5 <= q) && 0 <= P8 + 2147483648) && P8 <= 2147483647)) || ((((this_buffer_empty == 0 && q == 3) && this_expect <= (-1 + this_expect) / 2 * 2 + 1) && 0 <= P8 + 2147483648) && P8 <= 2147483647)) || ((((this_buffer_empty == 1 && this_expect <= (-1 + this_expect) / 2 * 2 + 1) && 0 <= P8 + 2147483648) && q == 4) && P8 <= 2147483647)) || ((this_buffer_empty == 0 && this_expect == 0) && q == 0) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2023-03-31 22:34:54,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...