/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/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/lu.cmp.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-19 21:59:48,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 21:59:48,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 21:59:48,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-19 21:59:48,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-19 21:59:48,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-19 21:59:48,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-19 21:59:48,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-19 21:59:48,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-19 21:59:48,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-19 21:59:48,890 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-19 21:59:48,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-19 21:59:48,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-19 21:59:48,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-19 21:59:48,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-19 21:59:48,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-19 21:59:48,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-19 21:59:48,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-19 21:59:48,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-19 21:59:48,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-19 21:59:48,907 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-19 21:59:48,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-19 21:59:48,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-19 21:59:48,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-19 21:59:48,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-19 21:59:48,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-19 21:59:48,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-19 21:59:48,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-19 21:59:48,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-19 21:59:48,926 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-03-19 21:59:48,956 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 21:59:48,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 21:59:48,957 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-19 21:59:48,957 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-19 21:59:48,958 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-19 21:59:48,958 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-19 21:59:48,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-19 21:59:48,958 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-19 21:59:48,959 INFO L138 SettingsManager]: * Use SBE=true [2022-03-19 21:59:48,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 21:59:48,959 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-19 21:59:48,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 21:59:48,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-19 21:59:48,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 21:59:48,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 21:59:48,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 21:59:48,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 21:59:48,960 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-19 21:59:48,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 21:59:48,961 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 21:59:48,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 21:59:48,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 21:59:48,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 21:59:48,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 21:59:48,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 21:59:48,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 21:59:48,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-19 21:59:48,962 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-19 21:59:48,962 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-19 21:59:48,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-19 21:59:48,963 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-19 21:59:48,963 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-19 21:59:48,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 21:59:48,963 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 21:59:49,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 21:59:49,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 21:59:49,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 21:59:49,216 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 21:59:49,217 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 21:59:49,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/lu.cmp.c [2022-03-19 21:59:49,276 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e384569d3/35c7febb969948d2b6017c578c4b4dd7/FLAGbdade87ad [2022-03-19 21:59:49,701 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 21:59:49,702 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/lu.cmp.c [2022-03-19 21:59:49,709 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e384569d3/35c7febb969948d2b6017c578c4b4dd7/FLAGbdade87ad [2022-03-19 21:59:49,722 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e384569d3/35c7febb969948d2b6017c578c4b4dd7 [2022-03-19 21:59:49,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 21:59:49,725 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 21:59:49,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 21:59:49,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 21:59:49,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 21:59:49,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 09:59:49" (1/1) ... [2022-03-19 21:59:49,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41dce892 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:59:49, skipping insertion in model container [2022-03-19 21:59:49,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 09:59:49" (1/1) ... [2022-03-19 21:59:49,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 21:59:49,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 21:59:49,905 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/lu.cmp.c[318,331] [2022-03-19 21:59:49,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 21:59:49,946 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 21:59:49,955 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/lu.cmp.c[318,331] [2022-03-19 21:59:49,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 21:59:49,988 INFO L208 MainTranslator]: Completed translation [2022-03-19 21:59:49,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:59:49 WrapperNode [2022-03-19 21:59:49,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 21:59:49,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 21:59:49,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 21:59:49,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 21:59:49,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:59:49" (1/1) ... [2022-03-19 21:59:49,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:59:49" (1/1) ... [2022-03-19 21:59:50,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:59:49" (1/1) ... [2022-03-19 21:59:50,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:59:49" (1/1) ... [2022-03-19 21:59:50,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:59:49" (1/1) ... [2022-03-19 21:59:50,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:59:49" (1/1) ... [2022-03-19 21:59:50,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:59:49" (1/1) ... [2022-03-19 21:59:50,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 21:59:50,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 21:59:50,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 21:59:50,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 21:59:50,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:59:49" (1/1) ... [2022-03-19 21:59:50,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 21:59:50,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 21:59:50,075 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) [2022-03-19 21:59:50,081 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 [2022-03-19 21:59:50,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 21:59:50,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 21:59:50,104 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 21:59:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-19 21:59:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs [2022-03-19 21:59:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 21:59:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ludcmp [2022-03-19 21:59:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 21:59:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 21:59:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 21:59:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 21:59:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-19 21:59:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure ludcmp [2022-03-19 21:59:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure fabs [2022-03-19 21:59:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 21:59:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-03-19 21:59:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-03-19 21:59:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-19 21:59:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 21:59:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 21:59:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 21:59:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 21:59:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 21:59:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 21:59:50,206 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 21:59:50,208 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 21:59:50,498 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 21:59:50,504 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 21:59:50,504 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-03-19 21:59:50,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 09:59:50 BoogieIcfgContainer [2022-03-19 21:59:50,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 21:59:50,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 21:59:50,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 21:59:50,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 21:59:50,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 09:59:49" (1/3) ... [2022-03-19 21:59:50,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55751c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 09:59:50, skipping insertion in model container [2022-03-19 21:59:50,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:59:49" (2/3) ... [2022-03-19 21:59:50,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55751c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 09:59:50, skipping insertion in model container [2022-03-19 21:59:50,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 09:59:50" (3/3) ... [2022-03-19 21:59:50,516 INFO L111 eAbstractionObserver]: Analyzing ICFG lu.cmp.c [2022-03-19 21:59:50,520 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-19 21:59:50,520 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 21:59:50,576 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 21:59:50,581 INFO L340 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 [2022-03-19 21:59:50,581 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 21:59:50,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 52 states have (on average 1.5576923076923077) internal successors, (81), 53 states have internal predecessors, (81), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-19 21:59:50,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-19 21:59:50,616 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 21:59:50,616 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 21:59:50,617 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 21:59:50,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 21:59:50,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1448102218, now seen corresponding path program 1 times [2022-03-19 21:59:50,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 21:59:50,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366161803] [2022-03-19 21:59:50,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 21:59:50,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 21:59:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 21:59:50,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 21:59:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 21:59:50,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 21:59:50,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 21:59:50,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366161803] [2022-03-19 21:59:50,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366161803] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 21:59:50,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 21:59:50,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-19 21:59:50,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468978813] [2022-03-19 21:59:50,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 21:59:50,857 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-19 21:59:50,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 21:59:50,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-19 21:59:50,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-19 21:59:50,887 INFO L87 Difference]: Start difference. First operand has 64 states, 52 states have (on average 1.5576923076923077) internal successors, (81), 53 states have internal predecessors, (81), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 21:59:51,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 21:59:51,059 INFO L93 Difference]: Finished difference Result 147 states and 225 transitions. [2022-03-19 21:59:51,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-19 21:59:51,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-03-19 21:59:51,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 21:59:51,067 INFO L225 Difference]: With dead ends: 147 [2022-03-19 21:59:51,068 INFO L226 Difference]: Without dead ends: 24 [2022-03-19 21:59:51,085 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-19 21:59:51,088 INFO L913 BasicCegarLoop]: 70 mSDtfsCounter, 38 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 21:59:51,089 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 73 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 21:59:51,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-03-19 21:59:51,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2022-03-19 21:59:51,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-19 21:59:51,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-03-19 21:59:51,138 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 12 [2022-03-19 21:59:51,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 21:59:51,138 INFO L478 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-03-19 21:59:51,138 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 21:59:51,139 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-03-19 21:59:51,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-19 21:59:51,139 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 21:59:51,139 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 21:59:51,151 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 21:59:51,151 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 21:59:51,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 21:59:51,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1436096445, now seen corresponding path program 1 times [2022-03-19 21:59:51,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 21:59:51,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579265353] [2022-03-19 21:59:51,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 21:59:51,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 21:59:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 21:59:51,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 21:59:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 21:59:51,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 21:59:51,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 21:59:51,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579265353] [2022-03-19 21:59:51,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579265353] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 21:59:51,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 21:59:51,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 21:59:51,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886328630] [2022-03-19 21:59:51,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 21:59:51,269 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 21:59:51,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 21:59:51,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 21:59:51,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-19 21:59:51,270 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 21:59:51,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 21:59:51,403 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2022-03-19 21:59:51,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-19 21:59:51,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-03-19 21:59:51,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 21:59:51,406 INFO L225 Difference]: With dead ends: 40 [2022-03-19 21:59:51,406 INFO L226 Difference]: Without dead ends: 26 [2022-03-19 21:59:51,409 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-19 21:59:51,410 INFO L913 BasicCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 21:59:51,411 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 30 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 21:59:51,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-03-19 21:59:51,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2022-03-19 21:59:51,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-19 21:59:51,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-03-19 21:59:51,416 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 12 [2022-03-19 21:59:51,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 21:59:51,417 INFO L478 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-03-19 21:59:51,417 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 21:59:51,417 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-03-19 21:59:51,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-19 21:59:51,418 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 21:59:51,418 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 21:59:51,418 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-19 21:59:51,418 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 21:59:51,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 21:59:51,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1858105272, now seen corresponding path program 1 times [2022-03-19 21:59:51,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 21:59:51,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679488340] [2022-03-19 21:59:51,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 21:59:51,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 21:59:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 21:59:51,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 21:59:51,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 21:59:51,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-19 21:59:51,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 21:59:51,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679488340] [2022-03-19 21:59:51,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679488340] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 21:59:51,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 21:59:51,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 21:59:51,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626265387] [2022-03-19 21:59:51,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 21:59:51,593 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 21:59:51,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 21:59:51,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 21:59:51,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-19 21:59:51,594 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 21:59:51,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 21:59:51,742 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2022-03-19 21:59:51,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-19 21:59:51,742 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-03-19 21:59:51,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 21:59:51,743 INFO L225 Difference]: With dead ends: 36 [2022-03-19 21:59:51,743 INFO L226 Difference]: Without dead ends: 34 [2022-03-19 21:59:51,744 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-19 21:59:51,745 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 18 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 21:59:51,745 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 38 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 21:59:51,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-03-19 21:59:51,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2022-03-19 21:59:51,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-19 21:59:51,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-03-19 21:59:51,752 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 16 [2022-03-19 21:59:51,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 21:59:51,753 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-03-19 21:59:51,753 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 21:59:51,753 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-03-19 21:59:51,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-19 21:59:51,754 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 21:59:51,754 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 21:59:51,754 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-19 21:59:51,754 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 21:59:51,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 21:59:51,755 INFO L85 PathProgramCache]: Analyzing trace with hash 419710194, now seen corresponding path program 1 times [2022-03-19 21:59:51,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 21:59:51,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626724069] [2022-03-19 21:59:51,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 21:59:51,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 21:59:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 21:59:51,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 21:59:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 21:59:51,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 21:59:51,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 21:59:51,839 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-19 21:59:51,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 21:59:51,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626724069] [2022-03-19 21:59:51,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626724069] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 21:59:51,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149739961] [2022-03-19 21:59:51,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 21:59:51,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 21:59:51,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 21:59:51,847 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) [2022-03-19 21:59:51,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-19 21:59:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 21:59:51,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-19 21:59:51,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 21:59:52,042 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-19 21:59:52,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 21:59:52,186 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-19 21:59:52,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149739961] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 21:59:52,187 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 21:59:52,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2022-03-19 21:59:52,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350048698] [2022-03-19 21:59:52,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-19 21:59:52,188 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 21:59:52,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 21:59:52,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 21:59:52,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-03-19 21:59:52,189 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 11 states have internal predecessors, (50), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-03-19 21:59:52,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 21:59:52,579 INFO L93 Difference]: Finished difference Result 103 states and 130 transitions. [2022-03-19 21:59:52,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-19 21:59:52,581 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 11 states have internal predecessors, (50), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29 [2022-03-19 21:59:52,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 21:59:52,586 INFO L225 Difference]: With dead ends: 103 [2022-03-19 21:59:52,587 INFO L226 Difference]: Without dead ends: 83 [2022-03-19 21:59:52,590 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2022-03-19 21:59:52,593 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 199 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 21:59:52,594 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 44 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 21:59:52,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-03-19 21:59:52,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2022-03-19 21:59:52,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 72 states have internal predecessors, (87), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-19 21:59:52,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2022-03-19 21:59:52,619 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 29 [2022-03-19 21:59:52,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 21:59:52,620 INFO L478 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2022-03-19 21:59:52,620 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 11 states have internal predecessors, (50), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-03-19 21:59:52,620 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2022-03-19 21:59:52,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-19 21:59:52,624 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 21:59:52,624 INFO L499 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 21:59:52,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-19 21:59:52,840 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 21:59:52,841 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 21:59:52,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 21:59:52,841 INFO L85 PathProgramCache]: Analyzing trace with hash -129272829, now seen corresponding path program 1 times [2022-03-19 21:59:52,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 21:59:52,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246404548] [2022-03-19 21:59:52,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 21:59:52,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 21:59:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 21:59:53,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 21:59:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 21:59:53,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-19 21:59:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 21:59:53,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-19 21:59:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 21:59:53,028 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-03-19 21:59:53,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 21:59:53,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246404548] [2022-03-19 21:59:53,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246404548] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 21:59:53,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598352474] [2022-03-19 21:59:53,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 21:59:53,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 21:59:53,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 21:59:53,031 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) [2022-03-19 21:59:53,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-19 21:59:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 21:59:53,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-19 21:59:53,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 21:59:53,353 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 148 proven. 28 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-03-19 21:59:53,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 21:59:53,562 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 152 proven. 28 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-03-19 21:59:53,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598352474] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 21:59:53,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 21:59:53,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-03-19 21:59:53,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84474743] [2022-03-19 21:59:53,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-19 21:59:53,565 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-19 21:59:53,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 21:59:53,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-19 21:59:53,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2022-03-19 21:59:53,566 INFO L87 Difference]: Start difference. First operand 81 states and 96 transitions. Second operand has 20 states, 19 states have (on average 4.052631578947368) internal successors, (77), 18 states have internal predecessors, (77), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-03-19 21:59:53,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 21:59:53,847 INFO L93 Difference]: Finished difference Result 227 states and 275 transitions. [2022-03-19 21:59:53,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-19 21:59:53,848 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.052631578947368) internal successors, (77), 18 states have internal predecessors, (77), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 78 [2022-03-19 21:59:53,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 21:59:53,848 INFO L225 Difference]: With dead ends: 227 [2022-03-19 21:59:53,848 INFO L226 Difference]: Without dead ends: 0 [2022-03-19 21:59:53,849 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=228, Invalid=642, Unknown=0, NotChecked=0, Total=870 [2022-03-19 21:59:53,850 INFO L913 BasicCegarLoop]: 8 mSDtfsCounter, 98 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 21:59:53,850 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 67 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 21:59:53,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-19 21:59:53,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-19 21:59:53,851 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) [2022-03-19 21:59:53,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-19 21:59:53,851 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 78 [2022-03-19 21:59:53,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 21:59:53,851 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-19 21:59:53,851 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.052631578947368) internal successors, (77), 18 states have internal predecessors, (77), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-03-19 21:59:53,852 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-19 21:59:53,852 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-19 21:59:53,854 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-19 21:59:53,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-19 21:59:54,067 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 21:59:54,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-19 21:59:54,296 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2022-03-19 21:59:54,296 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2022-03-19 21:59:54,296 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2022-03-19 21:59:54,296 INFO L882 garLoopResultBuilder]: For program point L118-2(lines 118 136) no Hoare annotation was computed. [2022-03-19 21:59:54,296 INFO L885 garLoopResultBuilder]: At program point L118-3(lines 118 136) the Hoare annotation is: true [2022-03-19 21:59:54,297 INFO L882 garLoopResultBuilder]: For program point L118-4(lines 118 136) no Hoare annotation was computed. [2022-03-19 21:59:54,297 INFO L885 garLoopResultBuilder]: At program point L120(line 120) the Hoare annotation is: true [2022-03-19 21:59:54,297 INFO L882 garLoopResultBuilder]: For program point L120-1(line 120) no Hoare annotation was computed. [2022-03-19 21:59:54,297 INFO L882 garLoopResultBuilder]: For program point ludcmpEXIT(lines 111 155) no Hoare annotation was computed. [2022-03-19 21:59:54,297 INFO L878 garLoopResultBuilder]: At program point ludcmpENTRY(lines 111 155) the Hoare annotation is: (= |old(#memory_real)| |#memory_real|) [2022-03-19 21:59:54,297 INFO L882 garLoopResultBuilder]: For program point L129-2(lines 129 135) no Hoare annotation was computed. [2022-03-19 21:59:54,297 INFO L885 garLoopResultBuilder]: At program point L129-3(lines 129 135) the Hoare annotation is: true [2022-03-19 21:59:54,297 INFO L882 garLoopResultBuilder]: For program point L121-2(lines 121 128) no Hoare annotation was computed. [2022-03-19 21:59:54,297 INFO L885 garLoopResultBuilder]: At program point L121-3(lines 121 128) the Hoare annotation is: true [2022-03-19 21:59:54,297 INFO L882 garLoopResultBuilder]: For program point L121-4(lines 121 128) no Hoare annotation was computed. [2022-03-19 21:59:54,298 INFO L882 garLoopResultBuilder]: For program point L146-2(lines 146 152) no Hoare annotation was computed. [2022-03-19 21:59:54,298 INFO L885 garLoopResultBuilder]: At program point L146-3(lines 146 152) the Hoare annotation is: true [2022-03-19 21:59:54,298 INFO L882 garLoopResultBuilder]: For program point L146-4(lines 146 152) no Hoare annotation was computed. [2022-03-19 21:59:54,298 INFO L882 garLoopResultBuilder]: For program point ludcmpFINAL(lines 111 155) no Hoare annotation was computed. [2022-03-19 21:59:54,298 INFO L882 garLoopResultBuilder]: For program point L138-2(lines 138 144) no Hoare annotation was computed. [2022-03-19 21:59:54,298 INFO L885 garLoopResultBuilder]: At program point L138-3(lines 138 144) the Hoare annotation is: true [2022-03-19 21:59:54,298 INFO L882 garLoopResultBuilder]: For program point L138-4(lines 138 144) no Hoare annotation was computed. [2022-03-19 21:59:54,298 INFO L882 garLoopResultBuilder]: For program point L132-2(lines 132 133) no Hoare annotation was computed. [2022-03-19 21:59:54,298 INFO L885 garLoopResultBuilder]: At program point L132-3(lines 132 133) the Hoare annotation is: true [2022-03-19 21:59:54,298 INFO L882 garLoopResultBuilder]: For program point L132-4(lines 132 133) no Hoare annotation was computed. [2022-03-19 21:59:54,299 INFO L882 garLoopResultBuilder]: For program point L124(lines 124 126) no Hoare annotation was computed. [2022-03-19 21:59:54,299 INFO L882 garLoopResultBuilder]: For program point L124-1(lines 124 126) no Hoare annotation was computed. [2022-03-19 21:59:54,299 INFO L882 garLoopResultBuilder]: For program point L149-2(lines 149 150) no Hoare annotation was computed. [2022-03-19 21:59:54,299 INFO L885 garLoopResultBuilder]: At program point L149-3(lines 149 150) the Hoare annotation is: true [2022-03-19 21:59:54,299 INFO L882 garLoopResultBuilder]: For program point L149-4(lines 149 150) no Hoare annotation was computed. [2022-03-19 21:59:54,299 INFO L882 garLoopResultBuilder]: For program point L141-2(lines 141 142) no Hoare annotation was computed. [2022-03-19 21:59:54,299 INFO L885 garLoopResultBuilder]: At program point L141-3(lines 141 142) the Hoare annotation is: true [2022-03-19 21:59:54,299 INFO L882 garLoopResultBuilder]: For program point L141-4(lines 141 142) no Hoare annotation was computed. [2022-03-19 21:59:54,299 INFO L882 garLoopResultBuilder]: For program point L125-2(lines 125 126) no Hoare annotation was computed. [2022-03-19 21:59:54,299 INFO L885 garLoopResultBuilder]: At program point L125-3(lines 125 126) the Hoare annotation is: true [2022-03-19 21:59:54,300 INFO L882 garLoopResultBuilder]: For program point L117(line 117) no Hoare annotation was computed. [2022-03-19 21:59:54,300 INFO L882 garLoopResultBuilder]: For program point L80(lines 80 81) no Hoare annotation was computed. [2022-03-19 21:59:54,300 INFO L882 garLoopResultBuilder]: For program point L80-2(lines 80 81) no Hoare annotation was computed. [2022-03-19 21:59:54,300 INFO L882 garLoopResultBuilder]: For program point fabsEXIT(lines 76 83) no Hoare annotation was computed. [2022-03-19 21:59:54,300 INFO L885 garLoopResultBuilder]: At program point fabsENTRY(lines 76 83) the Hoare annotation is: true [2022-03-19 21:59:54,300 INFO L882 garLoopResultBuilder]: For program point fabsFINAL(lines 76 83) no Hoare annotation was computed. [2022-03-19 21:59:54,300 INFO L882 garLoopResultBuilder]: For program point L99-2(line 99) no Hoare annotation was computed. [2022-03-19 21:59:54,300 INFO L882 garLoopResultBuilder]: For program point L93-2(lines 93 104) no Hoare annotation was computed. [2022-03-19 21:59:54,300 INFO L878 garLoopResultBuilder]: At program point L93-3(lines 93 104) the Hoare annotation is: (= 5 main_~n~0) [2022-03-19 21:59:54,300 INFO L885 garLoopResultBuilder]: At program point L93-4(lines 93 104) the Hoare annotation is: true [2022-03-19 21:59:54,301 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 85 109) no Hoare annotation was computed. [2022-03-19 21:59:54,301 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 85 109) no Hoare annotation was computed. [2022-03-19 21:59:54,301 INFO L882 garLoopResultBuilder]: For program point L106(line 106) no Hoare annotation was computed. [2022-03-19 21:59:54,301 INFO L882 garLoopResultBuilder]: For program point L102(line 102) no Hoare annotation was computed. [2022-03-19 21:59:54,301 INFO L882 garLoopResultBuilder]: For program point L96-2(lines 96 101) no Hoare annotation was computed. [2022-03-19 21:59:54,301 INFO L878 garLoopResultBuilder]: At program point mainENTRY(lines 85 109) the Hoare annotation is: (= |old(#memory_real)| |#memory_real|) [2022-03-19 21:59:54,301 INFO L878 garLoopResultBuilder]: At program point L96-3(lines 96 101) the Hoare annotation is: (and (<= main_~i~0 main_~n~0) (= 5 main_~n~0)) [2022-03-19 21:59:54,301 INFO L878 garLoopResultBuilder]: At program point L96-4(lines 96 101) the Hoare annotation is: (and (<= main_~i~0 main_~n~0) (= 5 main_~n~0)) [2022-03-19 21:59:54,301 INFO L882 garLoopResultBuilder]: For program point L99(line 99) no Hoare annotation was computed. [2022-03-19 21:59:54,301 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-19 21:59:54,302 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(~#a~0.offset)| |~#a~0.offset|) (= |old(~#b~0.offset)| |~#b~0.offset|) (= |old(~#a~0.base)| |~#a~0.base|) (= |~#b~0.base| |old(~#b~0.base)|) (= |~#x~0.base| |old(~#x~0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(~#x~0.offset)| |~#x~0.offset|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-19 21:59:54,302 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-19 21:59:54,302 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-19 21:59:54,302 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-19 21:59:54,302 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-19 21:59:54,302 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-19 21:59:54,302 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2022-03-19 21:59:54,302 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2022-03-19 21:59:54,302 INFO L882 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-03-19 21:59:54,302 INFO L882 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2022-03-19 21:59:54,302 INFO L882 garLoopResultBuilder]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2022-03-19 21:59:54,302 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2022-03-19 21:59:54,305 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-03-19 21:59:54,306 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-19 21:59:54,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.03 09:59:54 BoogieIcfgContainer [2022-03-19 21:59:54,318 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-19 21:59:54,319 INFO L158 Benchmark]: Toolchain (without parser) took 4593.56ms. Allocated memory was 184.5MB in the beginning and 265.3MB in the end (delta: 80.7MB). Free memory was 124.3MB in the beginning and 223.9MB in the end (delta: -99.6MB). Peak memory consumption was 123.9MB. Max. memory is 8.0GB. [2022-03-19 21:59:54,319 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 184.5MB. Free memory is still 140.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-19 21:59:54,319 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.15ms. Allocated memory was 184.5MB in the beginning and 265.3MB in the end (delta: 80.7MB). Free memory was 124.1MB in the beginning and 233.4MB in the end (delta: -109.3MB). Peak memory consumption was 13.2MB. Max. memory is 8.0GB. [2022-03-19 21:59:54,320 INFO L158 Benchmark]: Boogie Preprocessor took 46.95ms. Allocated memory is still 265.3MB. Free memory was 233.4MB in the beginning and 231.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-19 21:59:54,320 INFO L158 Benchmark]: RCFGBuilder took 469.09ms. Allocated memory is still 265.3MB. Free memory was 231.3MB in the beginning and 214.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-03-19 21:59:54,320 INFO L158 Benchmark]: TraceAbstraction took 3809.00ms. Allocated memory is still 265.3MB. Free memory was 214.0MB in the beginning and 223.9MB in the end (delta: -9.9MB). Peak memory consumption was 133.4MB. Max. memory is 8.0GB. [2022-03-19 21:59:54,321 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 184.5MB. Free memory is still 140.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 262.15ms. Allocated memory was 184.5MB in the beginning and 265.3MB in the end (delta: 80.7MB). Free memory was 124.1MB in the beginning and 233.4MB in the end (delta: -109.3MB). Peak memory consumption was 13.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.95ms. Allocated memory is still 265.3MB. Free memory was 233.4MB in the beginning and 231.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 469.09ms. Allocated memory is still 265.3MB. Free memory was 231.3MB in the beginning and 214.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 3809.00ms. Allocated memory is still 265.3MB. Free memory was 214.0MB in the beginning and 223.9MB in the end (delta: -9.9MB). Peak memory consumption was 133.4MB. 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: 7]: 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 7 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.7s, OverallIterations: 5, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 380 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 374 mSDsluCounter, 252 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 135 mSDsCounter, 110 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 424 IncrementalHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 110 mSolverCounterUnsat, 117 mSDtfsCounter, 424 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 287 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=4, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 13 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 54 PreInvPairs, 130 NumberOfFragments, 66 HoareAnnotationTreeSize, 54 FomulaSimplifications, 596 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 21 FomulaSimplificationsInter, 489 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 254 NumberOfCodeBlocks, 254 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 352 ConstructedInterpolants, 0 QuantifiedInterpolants, 1097 SizeOfPredicates, 4 NumberOfNonLiveVariables, 564 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 928/997 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 93]: Loop Invariant Derived loop invariant: 5 == n - InvariantResult [Line: 118]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 146]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 96]: Loop Invariant Derived loop invariant: i <= n && 5 == n - InvariantResult [Line: 121]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 138]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 132]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 141]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-03-19 21:59:54,356 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...