/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 OctagonDomain -i ../sv-benchmarks/c/loops/heavy-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 21:56:36,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 21:56:36,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 21:56:36,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 21:56:36,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 21:56:36,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 21:56:36,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 21:56:36,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 21:56:36,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 21:56:36,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 21:56:36,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 21:56:36,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 21:56:36,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 21:56:36,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 21:56:36,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 21:56:36,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 21:56:36,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 21:56:36,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 21:56:36,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 21:56:36,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 21:56:36,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 21:56:36,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 21:56:36,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 21:56:36,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 21:56:36,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 21:56:36,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 21:56:36,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 21:56:36,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 21:56:36,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 21:56:36,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 21:56:36,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 21:56:36,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 21:56:36,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 21:56:36,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 21:56:36,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 21:56:36,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 21:56:36,136 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 [2023-04-02 21:56:36,158 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 21:56:36,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 21:56:36,159 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 21:56:36,159 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 21:56:36,160 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 21:56:36,160 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 21:56:36,160 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 21:56:36,160 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 21:56:36,160 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 21:56:36,160 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 21:56:36,161 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 21:56:36,161 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 21:56:36,161 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 21:56:36,161 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 21:56:36,161 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 21:56:36,161 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 21:56:36,161 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 21:56:36,161 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 21:56:36,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 21:56:36,162 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 21:56:36,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 21:56:36,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 21:56:36,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 21:56:36,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 21:56:36,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 21:56:36,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 21:56:36,163 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 21:56:36,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 21:56:36,163 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 21:56:36,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 21:56:36,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 21:56:36,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 21:56:36,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:56:36,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 21:56:36,163 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 21:56:36,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 21:56:36,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 21:56:36,164 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 21:56:36,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 21:56:36,164 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 21:56:36,164 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 21:56:36,164 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 21:56:36,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 21:56:36,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 21:56:36,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 21:56:36,345 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 21:56:36,346 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 21:56:36,347 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/heavy-2.c [2023-04-02 21:56:37,285 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 21:56:37,460 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 21:56:37,460 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/heavy-2.c [2023-04-02 21:56:37,465 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44ef098c6/3e33fb09f58f4174960532ecdf153d32/FLAG6ad6caa73 [2023-04-02 21:56:37,474 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44ef098c6/3e33fb09f58f4174960532ecdf153d32 [2023-04-02 21:56:37,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 21:56:37,476 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 21:56:37,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 21:56:37,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 21:56:37,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 21:56:37,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:56:37" (1/1) ... [2023-04-02 21:56:37,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f8b61ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:56:37, skipping insertion in model container [2023-04-02 21:56:37,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:56:37" (1/1) ... [2023-04-02 21:56:37,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 21:56:37,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 21:56:37,584 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/loops/heavy-2.c[600,613] [2023-04-02 21:56:37,588 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:56:37,627 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 21:56:37,642 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/loops/heavy-2.c[600,613] [2023-04-02 21:56:37,646 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:56:37,680 INFO L208 MainTranslator]: Completed translation [2023-04-02 21:56:37,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:56:37 WrapperNode [2023-04-02 21:56:37,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 21:56:37,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 21:56:37,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 21:56:37,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 21:56:37,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:56:37" (1/1) ... [2023-04-02 21:56:37,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:56:37" (1/1) ... [2023-04-02 21:56:37,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:56:37" (1/1) ... [2023-04-02 21:56:37,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:56:37" (1/1) ... [2023-04-02 21:56:37,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:56:37" (1/1) ... [2023-04-02 21:56:37,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:56:37" (1/1) ... [2023-04-02 21:56:37,715 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:56:37" (1/1) ... [2023-04-02 21:56:37,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:56:37" (1/1) ... [2023-04-02 21:56:37,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 21:56:37,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 21:56:37,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 21:56:37,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 21:56:37,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:56:37" (1/1) ... [2023-04-02 21:56:37,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:56:37,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:56:37,741 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 21:56:37,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 21:56:37,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 21:56:37,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 21:56:37,770 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 21:56:37,770 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 21:56:37,770 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 21:56:37,770 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 21:56:37,770 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 21:56:37,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 21:56:37,770 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 21:56:37,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 21:56:37,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 21:56:37,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 21:56:37,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 21:56:37,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-04-02 21:56:37,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 21:56:37,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 21:56:37,821 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 21:56:37,823 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 21:56:38,019 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 21:56:38,055 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 21:56:38,055 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-04-02 21:56:38,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:56:38 BoogieIcfgContainer [2023-04-02 21:56:38,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 21:56:38,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 21:56:38,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 21:56:38,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 21:56:38,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 09:56:37" (1/3) ... [2023-04-02 21:56:38,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ff2818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:56:38, skipping insertion in model container [2023-04-02 21:56:38,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:56:37" (2/3) ... [2023-04-02 21:56:38,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ff2818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:56:38, skipping insertion in model container [2023-04-02 21:56:38,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:56:38" (3/3) ... [2023-04-02 21:56:38,067 INFO L112 eAbstractionObserver]: Analyzing ICFG heavy-2.c [2023-04-02 21:56:38,080 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 21:56:38,080 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 21:56:38,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 21:56:38,115 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;@6db4689c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 21:56:38,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 21:56:38,118 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 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) [2023-04-02 21:56:38,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-04-02 21:56:38,123 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:56:38,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:56:38,124 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:56:38,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:56:38,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1507640158, now seen corresponding path program 1 times [2023-04-02 21:56:38,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:56:38,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88984020] [2023-04-02 21:56:38,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:56:38,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:56:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:56:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:56:38,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:56:38,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88984020] [2023-04-02 21:56:38,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88984020] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 21:56:38,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 21:56:38,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 21:56:38,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751498994] [2023-04-02 21:56:38,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 21:56:38,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 21:56:38,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:56:38,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 21:56:38,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 21:56:38,334 INFO L87 Difference]: Start difference. First operand has 15 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 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 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-04-02 21:56:38,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:56:38,361 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2023-04-02 21:56:38,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 21:56:38,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 8 [2023-04-02 21:56:38,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:56:38,367 INFO L225 Difference]: With dead ends: 25 [2023-04-02 21:56:38,367 INFO L226 Difference]: Without dead ends: 14 [2023-04-02 21:56:38,369 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 [2023-04-02 21:56:38,371 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 21:56:38,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 21 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 21:56:38,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-04-02 21:56:38,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2023-04-02 21:56:38,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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) [2023-04-02 21:56:38,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2023-04-02 21:56:38,392 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2023-04-02 21:56:38,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:56:38,392 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2023-04-02 21:56:38,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-04-02 21:56:38,392 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-04-02 21:56:38,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-04-02 21:56:38,393 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:56:38,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:56:38,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 21:56:38,393 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:56:38,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:56:38,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1481188460, now seen corresponding path program 1 times [2023-04-02 21:56:38,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:56:38,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458086130] [2023-04-02 21:56:38,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:56:38,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:56:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:56:38,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:56:38,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:56:38,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458086130] [2023-04-02 21:56:38,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458086130] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 21:56:38,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 21:56:38,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 21:56:38,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972507572] [2023-04-02 21:56:38,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 21:56:38,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 21:56:38,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:56:38,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 21:56:38,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 21:56:38,461 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-04-02 21:56:38,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:56:38,490 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2023-04-02 21:56:38,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 21:56:38,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 10 [2023-04-02 21:56:38,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:56:38,491 INFO L225 Difference]: With dead ends: 20 [2023-04-02 21:56:38,491 INFO L226 Difference]: Without dead ends: 14 [2023-04-02 21:56:38,492 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 [2023-04-02 21:56:38,492 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 21:56:38,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 21:56:38,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-04-02 21:56:38,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2023-04-02 21:56:38,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2023-04-02 21:56:38,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2023-04-02 21:56:38,496 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2023-04-02 21:56:38,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:56:38,496 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-04-02 21:56:38,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-04-02 21:56:38,496 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2023-04-02 21:56:38,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-04-02 21:56:38,496 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:56:38,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:56:38,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 21:56:38,497 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:56:38,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:56:38,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1421401629, now seen corresponding path program 1 times [2023-04-02 21:56:38,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:56:38,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852167311] [2023-04-02 21:56:38,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:56:38,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:56:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:56:38,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:56:38,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:56:38,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852167311] [2023-04-02 21:56:38,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852167311] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 21:56:38,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 21:56:38,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 21:56:38,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790628831] [2023-04-02 21:56:38,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 21:56:38,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 21:56:38,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:56:38,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 21:56:38,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 21:56:38,591 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2023-04-02 21:56:38,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:56:38,612 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2023-04-02 21:56:38,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 21:56:38,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 [2023-04-02 21:56:38,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:56:38,614 INFO L225 Difference]: With dead ends: 21 [2023-04-02 21:56:38,614 INFO L226 Difference]: Without dead ends: 14 [2023-04-02 21:56:38,614 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 [2023-04-02 21:56:38,616 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 21:56:38,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 21:56:38,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-04-02 21:56:38,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-04-02 21:56:38,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) [2023-04-02 21:56:38,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2023-04-02 21:56:38,619 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2023-04-02 21:56:38,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:56:38,619 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2023-04-02 21:56:38,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2023-04-02 21:56:38,620 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2023-04-02 21:56:38,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-04-02 21:56:38,620 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:56:38,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:56:38,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 21:56:38,620 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:56:38,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:56:38,621 INFO L85 PathProgramCache]: Analyzing trace with hash 916128626, now seen corresponding path program 1 times [2023-04-02 21:56:38,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:56:38,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709551184] [2023-04-02 21:56:38,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:56:38,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:56:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:56:38,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:56:38,777 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:56:38,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709551184] [2023-04-02 21:56:38,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709551184] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 21:56:38,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081466600] [2023-04-02 21:56:38,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:56:38,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:56:38,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:56:38,780 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 21:56:38,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 21:56:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:56:38,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-02 21:56:38,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 21:56:38,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:56:38,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 21:56:38,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:56:38,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081466600] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 21:56:38,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2037750696] [2023-04-02 21:56:38,944 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-04-02 21:56:38,944 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 21:56:38,946 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 21:56:38,950 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 21:56:38,950 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 21:56:39,044 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 17 for LOIs [2023-04-02 21:56:40,014 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 16 for LOIs [2023-04-02 21:56:40,025 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 21:56:40,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2037750696] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 21:56:40,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-02 21:56:40,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 5, 4] total 17 [2023-04-02 21:56:40,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802725956] [2023-04-02 21:56:40,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 21:56:40,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 21:56:40,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:56:40,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 21:56:40,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-04-02 21:56:40,415 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 10 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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) [2023-04-02 21:56:40,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:56:40,757 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2023-04-02 21:56:40,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 21:56:40,757 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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) Word has length 13 [2023-04-02 21:56:40,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:56:40,758 INFO L225 Difference]: With dead ends: 18 [2023-04-02 21:56:40,758 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 21:56:40,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2023-04-02 21:56:40,759 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 21:56:40,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 21:56:40,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 21:56:40,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 21:56:40,760 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) [2023-04-02 21:56:40,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 21:56:40,760 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2023-04-02 21:56:40,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:56:40,760 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 21:56:40,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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) [2023-04-02 21:56:40,760 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 21:56:40,760 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 21:56:40,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 21:56:40,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 21:56:40,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:56:40,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 21:56:41,239 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2023-04-02 21:56:41,240 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 3) no Hoare annotation was computed. [2023-04-02 21:56:41,243 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (and (= |~#array~0.offset| |old(~#array~0.offset)|) (= |#memory_int| |old(#memory_int)|) (= |old(~#array~0.base)| |~#array~0.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2023-04-02 21:56:41,243 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 21:56:41,244 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 21:56:41,244 INFO L895 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (and (<= 1 |#StackHeapBarrier|) (= |~#array~0.offset| 0) (= 4 |~#array~0.base|) (= |#NULL.offset| 0) (= |#NULL.base| 0)) [2023-04-02 21:56:41,244 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 21:56:41,244 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 21:56:41,245 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 7 23) no Hoare annotation was computed. [2023-04-02 21:56:41,247 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 7 23) no Hoare annotation was computed. [2023-04-02 21:56:41,247 INFO L895 garLoopResultBuilder]: At program point L13-3(lines 13 15) the Hoare annotation is: (let ((.cse0 (= main_~a~0 1)) (.cse1 (= |main_#in~argv.offset| main_~argv.offset)) (.cse2 (= |main_#in~argv.base| main_~argv.base)) (.cse3 (<= 0 main_~i~0)) (.cse4 (= |main_#in~argc| main_~argc))) (or (not (= |#NULL.offset| 0)) (and .cse0 .cse1 (= |#memory_int| |old(#memory_int)|) (= main_~j~0 0) .cse2 .cse3 .cse4) (and .cse0 (<= 0 main_~k~0) .cse1 (<= 0 main_~j~0) .cse2 .cse3 .cse4) (not (= |~#array~0.offset| 0)) (not (= 4 |~#array~0.base|)) (not (= |#NULL.base| 0)) (< |#StackHeapBarrier| 1))) [2023-04-02 21:56:41,249 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 23) the Hoare annotation is: (or (not (= |#NULL.offset| 0)) (= |#memory_int| |old(#memory_int)|) (not (= |~#array~0.offset| 0)) (not (= 4 |~#array~0.base|)) (not (= |#NULL.base| 0)) (< |#StackHeapBarrier| 1)) [2023-04-02 21:56:41,249 INFO L899 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2023-04-02 21:56:41,249 INFO L895 garLoopResultBuilder]: At program point ERROR(lines 8 23) the Hoare annotation is: (or (not (= |#NULL.offset| 0)) (not (= |~#array~0.offset| 0)) (not (= 4 |~#array~0.base|)) (not (= |#NULL.base| 0)) (< |#StackHeapBarrier| 1)) [2023-04-02 21:56:41,249 INFO L895 garLoopResultBuilder]: At program point L14-3(lines 14 15) the Hoare annotation is: (or (not (= |#NULL.offset| 0)) (and (= main_~a~0 1) (<= 0 main_~k~0) (= |main_#in~argv.offset| main_~argv.offset) (<= 0 main_~j~0) (= |main_#in~argv.base| main_~argv.base) (<= 0 main_~i~0) (= |main_#in~argc| main_~argc)) (not (= |~#array~0.offset| 0)) (not (= 4 |~#array~0.base|)) (not (= |#NULL.base| 0)) (< |#StackHeapBarrier| 1)) [2023-04-02 21:56:41,249 INFO L895 garLoopResultBuilder]: At program point L12-3(lines 12 15) the Hoare annotation is: (let ((.cse3 (= main_~i~0 0)) (.cse0 (= main_~a~0 1)) (.cse1 (= |main_#in~argv.offset| main_~argv.offset)) (.cse2 (= |main_#in~argv.base| main_~argv.base)) (.cse4 (= |main_#in~argc| main_~argc))) (or (not (= |#NULL.offset| 0)) (and .cse0 .cse1 (= |#memory_int| |old(#memory_int)|) .cse2 .cse3 .cse4) (and (<= 0 main_~k~0) (or (and .cse0 .cse1 .cse3) (and .cse0 (<= 1 main_~j~0) .cse1)) (<= 0 main_~j~0) .cse2 (<= 0 main_~i~0) .cse4) (not (= |~#array~0.offset| 0)) (not (= 4 |~#array~0.base|)) (not (= |#NULL.base| 0)) (< |#StackHeapBarrier| 1))) [2023-04-02 21:56:41,250 INFO L899 garLoopResultBuilder]: For program point L12-4(lines 8 23) no Hoare annotation was computed. [2023-04-02 21:56:41,252 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-04-02 21:56:41,253 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 21:56:41,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 09:56:41 BoogieIcfgContainer [2023-04-02 21:56:41,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 21:56:41,275 INFO L158 Benchmark]: Toolchain (without parser) took 3798.21ms. Allocated memory was 244.3MB in the beginning and 293.6MB in the end (delta: 49.3MB). Free memory was 208.0MB in the beginning and 192.5MB in the end (delta: 15.5MB). Peak memory consumption was 65.9MB. Max. memory is 8.0GB. [2023-04-02 21:56:41,275 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 192.9MB. Free memory is still 138.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 21:56:41,275 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.19ms. Allocated memory is still 244.3MB. Free memory was 208.0MB in the beginning and 163.6MB in the end (delta: 44.4MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. [2023-04-02 21:56:41,275 INFO L158 Benchmark]: Boogie Preprocessor took 36.37ms. Allocated memory is still 244.3MB. Free memory was 163.6MB in the beginning and 162.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-02 21:56:41,275 INFO L158 Benchmark]: RCFGBuilder took 339.22ms. Allocated memory is still 244.3MB. Free memory was 162.0MB in the beginning and 148.9MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-04-02 21:56:41,275 INFO L158 Benchmark]: TraceAbstraction took 3215.90ms. Allocated memory was 244.3MB in the beginning and 293.6MB in the end (delta: 49.3MB). Free memory was 147.8MB in the beginning and 192.5MB in the end (delta: -44.7MB). Peak memory consumption was 6.1MB. Max. memory is 8.0GB. [2023-04-02 21:56:41,276 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 192.9MB. Free memory is still 138.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 203.19ms. Allocated memory is still 244.3MB. Free memory was 208.0MB in the beginning and 163.6MB in the end (delta: 44.4MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.37ms. Allocated memory is still 244.3MB. Free memory was 163.6MB in the beginning and 162.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 339.22ms. Allocated memory is still 244.3MB. Free memory was 162.0MB in the beginning and 148.9MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3215.90ms. Allocated memory was 244.3MB in the beginning and 293.6MB in the end (delta: 49.3MB). Free memory was 147.8MB in the beginning and 192.5MB in the end (delta: -44.7MB). Peak memory consumption was 6.1MB. 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: 21]: 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, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 51 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 103 IncrementalHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 29 mSDtfsCounter, 103 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 18 NumberOfFragments, 258 HoareAnnotationTreeSize, 8 FomulaSimplifications, 45 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 336 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 107 SizeOfPredicates, 1 NumberOfNonLiveVariables, 97 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 9/12 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: OVERALL_TIME: 1.1s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 19, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 37, TOOLS_POST_TIME: 0.7s, TOOLS_POST_CALL_APPLICATIONS: 4, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 2, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 40, TOOLS_QUANTIFIERELIM_TIME: 0.8s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.3s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 83, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 12, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 3, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 9, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 19, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 6, LOOP_SUMMARIZER_CACHE_MISSES: 6, LOOP_SUMMARIZER_OVERALL_TIME: 0.9s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.9s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 9, CALL_SUMMARIZER_APPLICATIONS: 2, CALL_SUMMARIZER_CACHE_MISSES: 1, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 129, DAG_COMPRESSION_RETAINED_NODES: 52, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: (((((!(#NULL == 0) || ((((((a == 1 && argv == argv) && unknown-#memory_int-unknown == \old(unknown-#memory_int-unknown)) && j == 0) && argv == argv) && 0 <= i) && \old(argc) == argc)) || ((((((a == 1 && 0 <= k) && argv == argv) && 0 <= j) && argv == argv) && 0 <= i) && \old(argc) == argc)) || !(array == 0)) || !(4 == array)) || !(#NULL == 0)) || unknown-#StackHeapBarrier-unknown < 1 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: (((((!(#NULL == 0) || (((((a == 1 && argv == argv) && unknown-#memory_int-unknown == \old(unknown-#memory_int-unknown)) && argv == argv) && i == 0) && \old(argc) == argc)) || (((((0 <= k && (((a == 1 && argv == argv) && i == 0) || ((a == 1 && 1 <= j) && argv == argv))) && 0 <= j) && argv == argv) && 0 <= i) && \old(argc) == argc)) || !(array == 0)) || !(4 == array)) || !(#NULL == 0)) || unknown-#StackHeapBarrier-unknown < 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((!(#NULL == 0) || ((((((a == 1 && 0 <= k) && argv == argv) && 0 <= j) && argv == argv) && 0 <= i) && \old(argc) == argc)) || !(array == 0)) || !(4 == array)) || !(#NULL == 0)) || unknown-#StackHeapBarrier-unknown < 1 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: (((!(#NULL == 0) || !(array == 0)) || !(4 == array)) || !(#NULL == 0)) || unknown-#StackHeapBarrier-unknown < 1 RESULT: Ultimate proved your program to be correct! [2023-04-02 21:56:41,291 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...