/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/ludcmp.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-09 22:20:00,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-09 22:20:00,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-09 22:20:00,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-09 22:20:00,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-09 22:20:00,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-09 22:20:00,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-09 22:20:00,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-09 22:20:00,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-09 22:20:00,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-09 22:20:00,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-09 22:20:00,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-09 22:20:00,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-09 22:20:00,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-09 22:20:00,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-09 22:20:00,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-09 22:20:00,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-09 22:20:00,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-09 22:20:00,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-09 22:20:00,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-09 22:20:00,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-09 22:20:00,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-09 22:20:00,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-09 22:20:00,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-09 22:20:00,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-09 22:20:00,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-09 22:20:00,502 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-09 22:20:00,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-09 22:20:00,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-09 22:20:00,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-09 22:20:00,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-09 22:20:00,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-09 22:20:00,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-09 22:20:00,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-09 22:20:00,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-09 22:20:00,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-09 22:20:00,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-09 22:20:00,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-09 22:20:00,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-09 22:20:00,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-09 22:20:00,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-09 22:20:00,507 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-09 22:20:00,521 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-09 22:20:00,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-09 22:20:00,521 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-09 22:20:00,521 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-09 22:20:00,522 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-09 22:20:00,522 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-09 22:20:00,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-09 22:20:00,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-09 22:20:00,522 INFO L138 SettingsManager]: * Use SBE=true [2022-01-09 22:20:00,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-09 22:20:00,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-09 22:20:00,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-09 22:20:00,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-09 22:20:00,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-09 22:20:00,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-09 22:20:00,523 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-09 22:20:00,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-09 22:20:00,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-09 22:20:00,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-09 22:20:00,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-09 22:20:00,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-09 22:20:00,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 22:20:00,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-09 22:20:00,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-09 22:20:00,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-09 22:20:00,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-09 22:20:00,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-09 22:20:00,525 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-09 22:20:00,525 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-09 22:20:00,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-09 22:20:00,525 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-09 22:20:00,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-09 22:20:00,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-09 22:20:00,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-09 22:20:00,696 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-09 22:20:00,697 INFO L275 PluginConnector]: CDTParser initialized [2022-01-09 22:20:00,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/ludcmp.c [2022-01-09 22:20:00,747 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a4a1a351/d24b7748e5214e0483abceff7096f2dd/FLAG5c7df7c77 [2022-01-09 22:20:01,125 INFO L306 CDTParser]: Found 1 translation units. [2022-01-09 22:20:01,125 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/ludcmp.c [2022-01-09 22:20:01,130 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a4a1a351/d24b7748e5214e0483abceff7096f2dd/FLAG5c7df7c77 [2022-01-09 22:20:01,532 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a4a1a351/d24b7748e5214e0483abceff7096f2dd [2022-01-09 22:20:01,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-09 22:20:01,535 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-09 22:20:01,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-09 22:20:01,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-09 22:20:01,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-09 22:20:01,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:20:01" (1/1) ... [2022-01-09 22:20:01,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11747a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:01, skipping insertion in model container [2022-01-09 22:20:01,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:20:01" (1/1) ... [2022-01-09 22:20:01,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-09 22:20:01,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-09 22:20:01,675 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/ludcmp.c[318,331] [2022-01-09 22:20:01,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 22:20:01,802 INFO L203 MainTranslator]: Completed pre-run [2022-01-09 22:20:01,816 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/ludcmp.c[318,331] [2022-01-09 22:20:01,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 22:20:01,933 INFO L208 MainTranslator]: Completed translation [2022-01-09 22:20:01,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:01 WrapperNode [2022-01-09 22:20:01,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-09 22:20:01,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-09 22:20:01,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-09 22:20:01,936 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-09 22:20:01,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:01" (1/1) ... [2022-01-09 22:20:01,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:01" (1/1) ... [2022-01-09 22:20:02,051 INFO L137 Inliner]: procedures = 18, calls = 2647, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 2821 [2022-01-09 22:20:02,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-09 22:20:02,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-09 22:20:02,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-09 22:20:02,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-09 22:20:02,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:01" (1/1) ... [2022-01-09 22:20:02,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:01" (1/1) ... [2022-01-09 22:20:02,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:01" (1/1) ... [2022-01-09 22:20:02,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:01" (1/1) ... [2022-01-09 22:20:02,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:01" (1/1) ... [2022-01-09 22:20:02,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:01" (1/1) ... [2022-01-09 22:20:02,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:01" (1/1) ... [2022-01-09 22:20:02,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-09 22:20:02,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-09 22:20:02,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-09 22:20:02,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-09 22:20:02,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:01" (1/1) ... [2022-01-09 22:20:02,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 22:20:02,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:20:02,172 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) [2022-01-09 22:20:02,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-09 22:20:02,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-09 22:20:02,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-09 22:20:02,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-09 22:20:02,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-01-09 22:20:02,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-01-09 22:20:02,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-09 22:20:02,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-09 22:20:02,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-01-09 22:20:02,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-09 22:20:02,298 INFO L234 CfgBuilder]: Building ICFG [2022-01-09 22:20:02,299 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-09 22:20:04,325 INFO L275 CfgBuilder]: Performing block encoding [2022-01-09 22:20:04,331 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-09 22:20:04,331 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-01-09 22:20:04,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:20:04 BoogieIcfgContainer [2022-01-09 22:20:04,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-09 22:20:04,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-09 22:20:04,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-09 22:20:04,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-09 22:20:04,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 10:20:01" (1/3) ... [2022-01-09 22:20:04,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4793a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:20:04, skipping insertion in model container [2022-01-09 22:20:04,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:01" (2/3) ... [2022-01-09 22:20:04,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4793a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:20:04, skipping insertion in model container [2022-01-09 22:20:04,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:20:04" (3/3) ... [2022-01-09 22:20:04,339 INFO L111 eAbstractionObserver]: Analyzing ICFG ludcmp.c [2022-01-09 22:20:04,358 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-09 22:20:04,359 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-09 22:20:04,388 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-09 22:20:04,392 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-09 22:20:04,393 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-09 22:20:04,404 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 49 states have internal predecessors, (77), 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) [2022-01-09 22:20:04,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-09 22:20:04,408 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:20:04,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:20:04,409 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:20:04,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:20:04,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1809811384, now seen corresponding path program 1 times [2022-01-09 22:20:04,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:20:04,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567510555] [2022-01-09 22:20:04,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:20:04,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:20:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:20:04,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:20:04,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:20:04,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567510555] [2022-01-09 22:20:04,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567510555] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:20:04,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:20:04,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-09 22:20:04,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431696289] [2022-01-09 22:20:04,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:20:04,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 22:20:04,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:20:04,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 22:20:04,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-09 22:20:04,964 INFO L87 Difference]: Start difference. First operand has 50 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 49 states have internal predecessors, (77), 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) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-01-09 22:20:05,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:20:05,016 INFO L93 Difference]: Finished difference Result 102 states and 159 transitions. [2022-01-09 22:20:05,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-09 22:20:05,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) Word has length 7 [2022-01-09 22:20:05,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:20:05,023 INFO L225 Difference]: With dead ends: 102 [2022-01-09 22:20:05,023 INFO L226 Difference]: Without dead ends: 17 [2022-01-09 22:20:05,028 INFO L932 BasicCegarLoop]: 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 [2022-01-09 22:20:05,031 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 67 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:20:05,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 114 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:20:05,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-01-09 22:20:05,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2022-01-09 22:20:05,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 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) [2022-01-09 22:20:05,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-01-09 22:20:05,052 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2022-01-09 22:20:05,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:20:05,052 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-01-09 22:20:05,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-01-09 22:20:05,053 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-01-09 22:20:05,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-09 22:20:05,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:20:05,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:20:05,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-09 22:20:05,054 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:20:05,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:20:05,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1948892579, now seen corresponding path program 1 times [2022-01-09 22:20:05,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:20:05,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432604278] [2022-01-09 22:20:05,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:20:05,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:20:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:20:05,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:20:05,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:20:05,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432604278] [2022-01-09 22:20:05,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432604278] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 22:20:05,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707550972] [2022-01-09 22:20:05,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:20:05,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:20:05,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:20:05,333 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) [2022-01-09 22:20:05,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-09 22:20:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:20:06,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 5292 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-09 22:20:06,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:20:06,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:20:06,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:20:06,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:20:06,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707550972] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 22:20:06,170 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 22:20:06,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-01-09 22:20:06,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206650890] [2022-01-09 22:20:06,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 22:20:06,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-09 22:20:06,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:20:06,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-09 22:20:06,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2022-01-09 22:20:06,175 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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) [2022-01-09 22:20:06,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:20:06,237 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2022-01-09 22:20:06,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-09 22:20:06,237 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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) Word has length 11 [2022-01-09 22:20:06,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:20:06,239 INFO L225 Difference]: With dead ends: 38 [2022-01-09 22:20:06,239 INFO L226 Difference]: Without dead ends: 26 [2022-01-09 22:20:06,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=92, Unknown=0, NotChecked=0, Total=156 [2022-01-09 22:20:06,240 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 47 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:20:06,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 43 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:20:06,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-09 22:20:06,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-01-09 22:20:06,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 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) [2022-01-09 22:20:06,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-01-09 22:20:06,250 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 11 [2022-01-09 22:20:06,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:20:06,252 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-01-09 22:20:06,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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) [2022-01-09 22:20:06,257 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-01-09 22:20:06,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-09 22:20:06,258 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:20:06,258 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:20:06,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-09 22:20:06,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:20:06,472 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:20:06,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:20:06,472 INFO L85 PathProgramCache]: Analyzing trace with hash -439332020, now seen corresponding path program 2 times [2022-01-09 22:20:06,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:20:06,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758176626] [2022-01-09 22:20:06,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:20:06,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:20:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:20:06,676 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-09 22:20:06,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:20:06,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758176626] [2022-01-09 22:20:06,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758176626] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:20:06,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:20:06,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-09 22:20:06,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787851655] [2022-01-09 22:20:06,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:20:06,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 22:20:06,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:20:06,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 22:20:06,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-09 22:20:06,682 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2022-01-09 22:20:06,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:20:06,713 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2022-01-09 22:20:06,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-09 22:20:06,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) Word has length 23 [2022-01-09 22:20:06,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:20:06,714 INFO L225 Difference]: With dead ends: 78 [2022-01-09 22:20:06,715 INFO L226 Difference]: Without dead ends: 54 [2022-01-09 22:20:06,715 INFO L932 BasicCegarLoop]: 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 [2022-01-09 22:20:06,715 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:20:06,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 21 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:20:06,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-01-09 22:20:06,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 41. [2022-01-09 22:20:06,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.175) internal successors, (47), 40 states have internal predecessors, (47), 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) [2022-01-09 22:20:06,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2022-01-09 22:20:06,720 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 23 [2022-01-09 22:20:06,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:20:06,720 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2022-01-09 22:20:06,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2022-01-09 22:20:06,720 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2022-01-09 22:20:06,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-09 22:20:06,721 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:20:06,721 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:20:06,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-09 22:20:06,721 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:20:06,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:20:06,721 INFO L85 PathProgramCache]: Analyzing trace with hash 756876242, now seen corresponding path program 1 times [2022-01-09 22:20:06,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:20:06,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299075868] [2022-01-09 22:20:06,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:20:06,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:20:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:20:06,987 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:20:06,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:20:06,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299075868] [2022-01-09 22:20:06,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299075868] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 22:20:06,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979927551] [2022-01-09 22:20:06,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:20:06,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:20:06,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:20:06,989 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) [2022-01-09 22:20:06,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-09 22:20:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:20:07,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 5331 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-09 22:20:07,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:20:07,784 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:20:07,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:20:07,885 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:20:07,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979927551] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 22:20:07,886 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 22:20:07,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-01-09 22:20:07,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157798272] [2022-01-09 22:20:07,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 22:20:07,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-09 22:20:07,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:20:07,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-09 22:20:07,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=232, Unknown=0, NotChecked=0, Total=380 [2022-01-09 22:20:07,887 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 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) [2022-01-09 22:20:07,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:20:07,945 INFO L93 Difference]: Finished difference Result 96 states and 114 transitions. [2022-01-09 22:20:07,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-09 22:20:07,950 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 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) Word has length 23 [2022-01-09 22:20:07,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:20:07,950 INFO L225 Difference]: With dead ends: 96 [2022-01-09 22:20:07,951 INFO L226 Difference]: Without dead ends: 57 [2022-01-09 22:20:07,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=159, Invalid=261, Unknown=0, NotChecked=0, Total=420 [2022-01-09 22:20:07,952 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 74 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:20:07,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 45 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:20:07,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-01-09 22:20:07,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-01-09 22:20:07,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.1607142857142858) internal successors, (65), 56 states have internal predecessors, (65), 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) [2022-01-09 22:20:07,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2022-01-09 22:20:07,956 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 23 [2022-01-09 22:20:07,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:20:07,957 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2022-01-09 22:20:07,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 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) [2022-01-09 22:20:07,957 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2022-01-09 22:20:07,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-09 22:20:07,957 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:20:07,957 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:20:07,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-09 22:20:08,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-09 22:20:08,179 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:20:08,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:20:08,180 INFO L85 PathProgramCache]: Analyzing trace with hash 58704032, now seen corresponding path program 2 times [2022-01-09 22:20:08,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:20:08,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827513319] [2022-01-09 22:20:08,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:20:08,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:20:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-09 22:20:08,308 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-09 22:20:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-09 22:20:08,454 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-09 22:20:08,455 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-09 22:20:08,455 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-09 22:20:08,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-09 22:20:08,459 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1] [2022-01-09 22:20:08,461 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-09 22:20:08,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 10:20:08 BoogieIcfgContainer [2022-01-09 22:20:08,512 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-09 22:20:08,513 INFO L158 Benchmark]: Toolchain (without parser) took 6977.83ms. Allocated memory was 180.4MB in the beginning and 326.1MB in the end (delta: 145.8MB). Free memory was 124.9MB in the beginning and 101.8MB in the end (delta: 23.1MB). Peak memory consumption was 169.2MB. Max. memory is 8.0GB. [2022-01-09 22:20:08,513 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 180.4MB. Free memory is still 141.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-09 22:20:08,513 INFO L158 Benchmark]: CACSL2BoogieTranslator took 395.58ms. Allocated memory was 180.4MB in the beginning and 232.8MB in the end (delta: 52.4MB). Free memory was 124.7MB in the beginning and 172.8MB in the end (delta: -48.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-01-09 22:20:08,513 INFO L158 Benchmark]: Boogie Procedure Inliner took 116.35ms. Allocated memory is still 232.8MB. Free memory was 172.8MB in the beginning and 150.3MB in the end (delta: 22.5MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2022-01-09 22:20:08,514 INFO L158 Benchmark]: Boogie Preprocessor took 94.75ms. Allocated memory is still 232.8MB. Free memory was 150.3MB in the beginning and 135.1MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-01-09 22:20:08,514 INFO L158 Benchmark]: RCFGBuilder took 2185.17ms. Allocated memory is still 232.8MB. Free memory was 135.1MB in the beginning and 70.0MB in the end (delta: 65.1MB). Peak memory consumption was 100.7MB. Max. memory is 8.0GB. [2022-01-09 22:20:08,514 INFO L158 Benchmark]: TraceAbstraction took 4178.07ms. Allocated memory was 232.8MB in the beginning and 326.1MB in the end (delta: 93.3MB). Free memory was 69.5MB in the beginning and 101.8MB in the end (delta: -32.3MB). Peak memory consumption was 61.0MB. Max. memory is 8.0GB. [2022-01-09 22:20:08,515 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 180.4MB. Free memory is still 141.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 395.58ms. Allocated memory was 180.4MB in the beginning and 232.8MB in the end (delta: 52.4MB). Free memory was 124.7MB in the beginning and 172.8MB in the end (delta: -48.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 116.35ms. Allocated memory is still 232.8MB. Free memory was 172.8MB in the beginning and 150.3MB in the end (delta: 22.5MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 94.75ms. Allocated memory is still 232.8MB. Free memory was 150.3MB in the beginning and 135.1MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * RCFGBuilder took 2185.17ms. Allocated memory is still 232.8MB. Free memory was 135.1MB in the beginning and 70.0MB in the end (delta: 65.1MB). Peak memory consumption was 100.7MB. Max. memory is 8.0GB. * TraceAbstraction took 4178.07ms. Allocated memory was 232.8MB in the beginning and 326.1MB in the end (delta: 93.3MB). Free memory was 69.5MB in the beginning and 101.8MB in the end (delta: -32.3MB). Peak memory consumption was 61.0MB. 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 - UnprovableResult [Line: 7]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_real at line 98, overapproximation of someBinaryArithmeticDOUBLEoperation at line 100. Possible FailurePath: [L71] double a[50][50], b[50], x[50]; VAL [a={4:0}, b={5:0}, x={6:0}] [L88] int i, j, nmax = 50, n = 5, chkerr; [L89] double eps, w; [L91] eps = 1.0e-6 [L93] i = 0 VAL [a={4:0}, b={5:0}, eps=1/1000000, i=0, n=5, nmax=50, x={6:0}] [L93] COND TRUE i <= n [L95] w = 0.0 [L96] j = 0 VAL [a={4:0}, b={5:0}, eps=1/1000000, i=0, j=0, n=5, nmax=50, w=0, x={6:0}] [L96] COND TRUE j <= n [L98] a[i][j] = (i + 1) + (j + 1) VAL [a={4:0}, b={5:0}, eps=1/1000000, i=0, j=0, n=5, nmax=50, w=0, x={6:0}] [L99] COND TRUE i == j [L99] EXPR a[i][j] [L99] a[i][j] *= 10.0 [L100] EXPR a[i][j] [L100] w += a[i][j] [L96] j++ VAL [a={4:0}, b={5:0}, eps=1/1000000, i=0, j=1, n=5, nmax=50, x={6:0}] [L96] COND TRUE j <= n [L98] a[i][j] = (i + 1) + (j + 1) VAL [a={4:0}, b={5:0}, eps=1/1000000, i=0, j=1, n=5, nmax=50, x={6:0}] [L99] COND FALSE !(i == j) VAL [a={4:0}, b={5:0}, eps=1/1000000, i=0, j=1, n=5, nmax=50, x={6:0}] [L100] EXPR a[i][j] [L100] w += a[i][j] [L96] j++ VAL [a={4:0}, b={5:0}, eps=1/1000000, i=0, j=2, n=5, nmax=50, x={6:0}] [L96] COND TRUE j <= n [L98] a[i][j] = (i + 1) + (j + 1) VAL [a={4:0}, b={5:0}, eps=1/1000000, i=0, j=2, n=5, nmax=50, x={6:0}] [L99] COND FALSE !(i == j) VAL [a={4:0}, b={5:0}, eps=1/1000000, i=0, j=2, n=5, nmax=50, x={6:0}] [L100] EXPR a[i][j] [L100] w += a[i][j] [L96] j++ VAL [a={4:0}, b={5:0}, eps=1/1000000, i=0, j=3, n=5, nmax=50, x={6:0}] [L96] COND TRUE j <= n [L98] a[i][j] = (i + 1) + (j + 1) VAL [a={4:0}, b={5:0}, eps=1/1000000, i=0, j=3, n=5, nmax=50, x={6:0}] [L99] COND FALSE !(i == j) VAL [a={4:0}, b={5:0}, eps=1/1000000, i=0, j=3, n=5, nmax=50, x={6:0}] [L100] EXPR a[i][j] [L100] w += a[i][j] [L96] j++ VAL [a={4:0}, b={5:0}, eps=1/1000000, i=0, j=4, n=5, nmax=50, x={6:0}] [L96] COND TRUE j <= n [L98] a[i][j] = (i + 1) + (j + 1) VAL [a={4:0}, b={5:0}, eps=1/1000000, i=0, j=4, n=5, nmax=50, x={6:0}] [L99] COND FALSE !(i == j) VAL [a={4:0}, b={5:0}, eps=1/1000000, i=0, j=4, n=5, nmax=50, x={6:0}] [L100] EXPR a[i][j] [L100] w += a[i][j] [L96] j++ VAL [a={4:0}, b={5:0}, eps=1/1000000, i=0, j=5, n=5, nmax=50, x={6:0}] [L96] COND TRUE j <= n [L98] a[i][j] = (i + 1) + (j + 1) VAL [a={4:0}, b={5:0}, eps=1/1000000, i=0, j=5, n=5, nmax=50, x={6:0}] [L99] COND FALSE !(i == j) VAL [a={4:0}, b={5:0}, eps=1/1000000, i=0, j=5, n=5, nmax=50, x={6:0}] [L100] EXPR a[i][j] [L100] w += a[i][j] [L96] j++ VAL [a={4:0}, b={5:0}, eps=1/1000000, i=0, j=6, n=5, nmax=50, x={6:0}] [L96] COND FALSE !(j <= n) VAL [a={4:0}, b={5:0}, eps=1/1000000, i=0, j=6, n=5, nmax=50, x={6:0}] [L102] CALL __VERIFIER_assert(i==2) [L6] COND TRUE !(cond) VAL [\old(cond)=0, a={4:0}, b={5:0}, cond=0, x={6:0}] [L7] reach_error() VAL [\old(cond)=0, a={4:0}, b={5:0}, cond=0, x={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.1s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 197 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 197 mSDsluCounter, 223 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 137 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 120 IncrementalHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 86 mSDtfsCounter, 120 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=4, InterpolantAutomatonStates: 24, 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, 16 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 129 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 556 SizeOfPredicates, 4 NumberOfNonLiveVariables, 10623 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 28/115 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-01-09 22:20:08,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...