/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/loops/lu.cmp.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 22:58:04,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 22:58:04,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 22:58:04,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 22:58:04,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 22:58:04,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 22:58:04,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 22:58:04,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 22:58:04,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 22:58:04,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 22:58:04,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 22:58:04,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 22:58:04,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 22:58:04,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 22:58:04,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 22:58:04,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 22:58:04,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 22:58:04,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 22:58:04,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 22:58:04,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 22:58:04,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 22:58:04,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 22:58:04,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 22:58:04,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 22:58:04,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 22:58:04,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 22:58:04,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 22:58:04,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 22:58:04,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 22:58:04,892 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 22:58:04,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 22:58:04,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 22:58:04,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 22:58:04,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 22:58:04,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 22:58:04,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 22:58:04,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 22:58:04,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 22:58:04,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 22:58:04,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 22:58:04,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 22:58:04,901 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 22:58:04,930 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 22:58:04,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 22:58:04,931 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 22:58:04,931 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 22:58:04,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 22:58:04,932 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 22:58:04,932 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 22:58:04,933 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 22:58:04,933 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 22:58:04,933 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 22:58:04,934 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 22:58:04,934 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 22:58:04,934 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 22:58:04,934 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 22:58:04,934 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 22:58:04,934 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 22:58:04,935 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 22:58:04,935 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 22:58:04,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 22:58:04,936 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 22:58:04,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 22:58:04,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 22:58:04,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 22:58:04,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 22:58:04,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 22:58:04,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 22:58:04,937 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 22:58:04,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 22:58:04,938 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 22:58:04,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 22:58:04,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 22:58:04,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 22:58:04,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:58:04,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 22:58:04,939 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 22:58:04,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 22:58:04,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 22:58:04,939 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 22:58:04,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 22:58:04,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 22:58:04,940 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 22:58:04,940 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 22:58:05,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 22:58:05,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 22:58:05,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 22:58:05,196 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 22:58:05,197 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 22:58:05,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/lu.cmp.c [2023-03-31 22:58:06,348 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 22:58:06,541 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 22:58:06,541 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/lu.cmp.c [2023-03-31 22:58:06,549 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e115ce35/c8db5c4a7edd4cd096fd1eb4b52c04de/FLAGb889f044f [2023-03-31 22:58:06,561 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e115ce35/c8db5c4a7edd4cd096fd1eb4b52c04de [2023-03-31 22:58:06,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 22:58:06,564 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 22:58:06,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 22:58:06,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 22:58:06,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 22:58:06,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:58:06" (1/1) ... [2023-03-31 22:58:06,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3678906d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:58:06, skipping insertion in model container [2023-03-31 22:58:06,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:58:06" (1/1) ... [2023-03-31 22:58:06,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 22:58:06,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 22:58:06,710 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/lu.cmp.c[318,331] [2023-03-31 22:58:06,742 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:58:06,753 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 22:58:06,765 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/lu.cmp.c[318,331] [2023-03-31 22:58:06,805 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:58:06,823 INFO L208 MainTranslator]: Completed translation [2023-03-31 22:58:06,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:58:06 WrapperNode [2023-03-31 22:58:06,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 22:58:06,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 22:58:06,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 22:58:06,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 22:58:06,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:58:06" (1/1) ... [2023-03-31 22:58:06,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:58:06" (1/1) ... [2023-03-31 22:58:06,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:58:06" (1/1) ... [2023-03-31 22:58:06,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:58:06" (1/1) ... [2023-03-31 22:58:06,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:58:06" (1/1) ... [2023-03-31 22:58:06,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:58:06" (1/1) ... [2023-03-31 22:58:06,876 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:58:06" (1/1) ... [2023-03-31 22:58:06,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:58:06" (1/1) ... [2023-03-31 22:58:06,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 22:58:06,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 22:58:06,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 22:58:06,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 22:58:06,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:58:06" (1/1) ... [2023-03-31 22:58:06,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:58:06,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:58:06,920 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 22:58:06,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 22:58:06,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 22:58:06,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 22:58:06,952 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 22:58:06,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 22:58:06,952 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs [2023-03-31 22:58:06,952 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 22:58:06,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ludcmp [2023-03-31 22:58:06,952 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 22:58:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 22:58:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 22:58:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 22:58:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 22:58:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure ludcmp [2023-03-31 22:58:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure fabs [2023-03-31 22:58:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 22:58:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-03-31 22:58:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-03-31 22:58:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-03-31 22:58:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 22:58:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 22:58:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 22:58:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 22:58:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 22:58:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 22:58:07,034 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 22:58:07,037 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 22:58:07,408 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 22:58:07,515 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 22:58:07,516 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-03-31 22:58:07,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:58:07 BoogieIcfgContainer [2023-03-31 22:58:07,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 22:58:07,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 22:58:07,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 22:58:07,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 22:58:07,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 10:58:06" (1/3) ... [2023-03-31 22:58:07,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78fbf88d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:58:07, skipping insertion in model container [2023-03-31 22:58:07,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:58:06" (2/3) ... [2023-03-31 22:58:07,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78fbf88d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:58:07, skipping insertion in model container [2023-03-31 22:58:07,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:58:07" (3/3) ... [2023-03-31 22:58:07,526 INFO L112 eAbstractionObserver]: Analyzing ICFG lu.cmp.c [2023-03-31 22:58:07,543 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 22:58:07,543 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 22:58:07,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 22:58:07,608 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@353e0990, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 22:58:07,609 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 22:58:07,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-03-31 22:58:07,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-03-31 22:58:07,620 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:58:07,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:58:07,622 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:58:07,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:58:07,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1816357931, now seen corresponding path program 1 times [2023-03-31 22:58:07,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:58:07,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333478067] [2023-03-31 22:58:07,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:58:07,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:58:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:58:07,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:58:07,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:58:07,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333478067] [2023-03-31 22:58:07,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333478067] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:58:07,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:58:07,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 22:58:07,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833760226] [2023-03-31 22:58:07,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:58:07,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 22:58:07,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:58:07,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 22:58:07,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 22:58:07,980 INFO L87 Difference]: Start difference. First operand has 39 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:58:08,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:58:08,067 INFO L93 Difference]: Finished difference Result 74 states and 104 transitions. [2023-03-31 22:58:08,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 22:58:08,069 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-03-31 22:58:08,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:58:08,074 INFO L225 Difference]: With dead ends: 74 [2023-03-31 22:58:08,074 INFO L226 Difference]: Without dead ends: 16 [2023-03-31 22:58:08,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 22:58:08,080 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 6 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 22:58:08,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 56 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 22:58:08,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-03-31 22:58:08,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-03-31 22:58:08,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2023-03-31 22:58:08,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2023-03-31 22:58:08,109 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2023-03-31 22:58:08,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:58:08,109 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-03-31 22:58:08,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:58:08,110 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2023-03-31 22:58:08,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-03-31 22:58:08,110 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:58:08,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:58:08,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 22:58:08,111 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:58:08,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:58:08,112 INFO L85 PathProgramCache]: Analyzing trace with hash 753655936, now seen corresponding path program 1 times [2023-03-31 22:58:08,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:58:08,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820660042] [2023-03-31 22:58:08,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:58:08,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:58:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:58:08,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-31 22:58:08,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:58:08,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820660042] [2023-03-31 22:58:08,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820660042] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:58:08,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:58:08,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 22:58:08,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278275878] [2023-03-31 22:58:08,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:58:08,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 22:58:08,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:58:08,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 22:58:08,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 22:58:08,286 INFO L87 Difference]: Start difference. First operand 16 states and 17 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), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:58:08,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:58:08,323 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2023-03-31 22:58:08,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 22:58:08,324 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), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-03-31 22:58:08,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:58:08,324 INFO L225 Difference]: With dead ends: 27 [2023-03-31 22:58:08,324 INFO L226 Difference]: Without dead ends: 25 [2023-03-31 22:58:08,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 22:58:08,326 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:58:08,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 28 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:58:08,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-03-31 22:58:08,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2023-03-31 22:58:08,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 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) [2023-03-31 22:58:08,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2023-03-31 22:58:08,333 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 12 [2023-03-31 22:58:08,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:58:08,333 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2023-03-31 22:58:08,333 INFO L496 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), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:58:08,333 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2023-03-31 22:58:08,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-03-31 22:58:08,334 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:58:08,334 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:58:08,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 22:58:08,334 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:58:08,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:58:08,335 INFO L85 PathProgramCache]: Analyzing trace with hash 314885444, now seen corresponding path program 1 times [2023-03-31 22:58:08,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:58:08,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37910146] [2023-03-31 22:58:08,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:58:08,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:58:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:58:08,597 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-31 22:58:08,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:58:08,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37910146] [2023-03-31 22:58:08,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37910146] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:58:08,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582244474] [2023-03-31 22:58:08,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:58:08,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:58:08,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:58:08,605 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 22:58:08,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 22:58:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:58:08,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-31 22:58:08,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:58:08,793 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-31 22:58:08,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 22:58:08,847 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-31 22:58:08,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582244474] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 22:58:08,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [403329332] [2023-03-31 22:58:08,870 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-03-31 22:58:08,870 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 22:58:08,874 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 22:58:08,879 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 22:58:08,880 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 22:58:09,048 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 35 for LOIs [2023-03-31 22:58:09,581 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 51 for LOIs [2023-03-31 22:58:09,687 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-03-31 22:58:09,731 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 22:58:10,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [403329332] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:58:10,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-03-31 22:58:10,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [6, 5, 5] total 22 [2023-03-31 22:58:10,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392344450] [2023-03-31 22:58:10,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:58:10,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-31 22:58:10,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:58:10,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-31 22:58:10,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2023-03-31 22:58:10,455 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 12 states, 8 states have (on average 1.375) internal successors, (11), 6 states have internal predecessors, (11), 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) [2023-03-31 22:58:11,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:58:11,180 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2023-03-31 22:58:11,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 22:58:11,181 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 1.375) internal successors, (11), 6 states have internal predecessors, (11), 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) Word has length 21 [2023-03-31 22:58:11,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:58:11,182 INFO L225 Difference]: With dead ends: 24 [2023-03-31 22:58:11,182 INFO L226 Difference]: Without dead ends: 0 [2023-03-31 22:58:11,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2023-03-31 22:58:11,184 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 22:58:11,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 5 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 22:58:11,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-03-31 22:58:11,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-03-31 22:58:11,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-03-31 22:58:11,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-03-31 22:58:11,185 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2023-03-31 22:58:11,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:58:11,186 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-03-31 22:58:11,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 1.375) internal successors, (11), 6 states have internal predecessors, (11), 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) [2023-03-31 22:58:11,186 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-03-31 22:58:11,186 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-03-31 22:58:11,188 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 22:58:11,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 22:58:11,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:58:11,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-03-31 22:58:12,048 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2023-03-31 22:58:12,049 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 3) no Hoare annotation was computed. [2023-03-31 22:58:12,049 INFO L902 garLoopResultBuilder]: At program point L118-3(lines 118 136) the Hoare annotation is: true [2023-03-31 22:58:12,049 INFO L902 garLoopResultBuilder]: At program point L120(line 120) the Hoare annotation is: true [2023-03-31 22:58:12,050 INFO L899 garLoopResultBuilder]: For program point L120-1(line 120) no Hoare annotation was computed. [2023-03-31 22:58:12,050 INFO L899 garLoopResultBuilder]: For program point ludcmpEXIT(lines 111 155) no Hoare annotation was computed. [2023-03-31 22:58:12,050 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 111 155) the Hoare annotation is: true [2023-03-31 22:58:12,050 INFO L902 garLoopResultBuilder]: At program point L129-3(lines 129 135) the Hoare annotation is: true [2023-03-31 22:58:12,050 INFO L902 garLoopResultBuilder]: At program point L121-3(lines 121 128) the Hoare annotation is: true [2023-03-31 22:58:12,050 INFO L902 garLoopResultBuilder]: At program point L146-3(lines 146 152) the Hoare annotation is: true [2023-03-31 22:58:12,050 INFO L899 garLoopResultBuilder]: For program point ludcmpFINAL(lines 111 155) no Hoare annotation was computed. [2023-03-31 22:58:12,050 INFO L902 garLoopResultBuilder]: At program point L138-3(lines 138 144) the Hoare annotation is: true [2023-03-31 22:58:12,051 INFO L902 garLoopResultBuilder]: At program point L132-3(lines 132 133) the Hoare annotation is: true [2023-03-31 22:58:12,051 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 126) no Hoare annotation was computed. [2023-03-31 22:58:12,051 INFO L899 garLoopResultBuilder]: For program point L124-1(lines 124 126) no Hoare annotation was computed. [2023-03-31 22:58:12,051 INFO L902 garLoopResultBuilder]: At program point L149-3(lines 149 150) the Hoare annotation is: true [2023-03-31 22:58:12,051 INFO L902 garLoopResultBuilder]: At program point L141-3(lines 141 142) the Hoare annotation is: true [2023-03-31 22:58:12,051 INFO L902 garLoopResultBuilder]: At program point L125-3(lines 125 126) the Hoare annotation is: true [2023-03-31 22:58:12,051 INFO L899 garLoopResultBuilder]: For program point L117(line 117) no Hoare annotation was computed. [2023-03-31 22:58:12,051 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 76 83) the Hoare annotation is: true [2023-03-31 22:58:12,051 INFO L899 garLoopResultBuilder]: For program point fabsEXIT(lines 76 83) no Hoare annotation was computed. [2023-03-31 22:58:12,052 INFO L895 garLoopResultBuilder]: At program point L93-3(lines 93 104) the Hoare annotation is: (let ((.cse0 (= main_~eps~0 (/ 1.0 1000000.0))) (.cse1 (= main_~nmax~0 50)) (.cse2 (= 5 main_~n~0))) (or (not (= |~#x~0.offset| 0)) (not (= |#NULL.offset| 0)) (not (= |~#a~0.offset| 0)) (< |#StackHeapBarrier| 0) (and (<= 5 main_~j~0) (<= 0 main_~i~0) .cse0 .cse1 .cse2) (not (= |~#b~0.base| 5)) (not (= |~#x~0.base| 6)) (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= main_~i~0 0) .cse0 .cse1 (= |old(#valid)| |#valid|) .cse2) (not (= |#NULL.base| 0)) (not (= |~#b~0.offset| 0)) (not (= |~#a~0.base| 4)))) [2023-03-31 22:58:12,052 INFO L895 garLoopResultBuilder]: At program point L93-4(lines 93 104) the Hoare annotation is: (or (not (= |~#x~0.offset| 0)) (not (= |#NULL.offset| 0)) (not (= |~#a~0.offset| 0)) (< |#StackHeapBarrier| 0) (not (= |~#b~0.base| 5)) (not (= |~#x~0.base| 6)) (not (= |#NULL.base| 0)) (not (= |~#b~0.offset| 0)) (not (= |~#a~0.base| 4)) (= 5 main_~n~0)) [2023-03-31 22:58:12,052 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 85 109) no Hoare annotation was computed. [2023-03-31 22:58:12,052 INFO L899 garLoopResultBuilder]: For program point L106(line 106) no Hoare annotation was computed. [2023-03-31 22:58:12,052 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 85 109) the Hoare annotation is: (or (not (= |~#x~0.offset| 0)) (not (= |#NULL.offset| 0)) (not (= |~#a~0.offset| 0)) (< |#StackHeapBarrier| 0) (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) (not (= |~#b~0.base| 5)) (not (= |~#x~0.base| 6)) (not (= |#NULL.base| 0)) (not (= |~#b~0.offset| 0)) (not (= |~#a~0.base| 4))) [2023-03-31 22:58:12,052 INFO L899 garLoopResultBuilder]: For program point L102(line 102) no Hoare annotation was computed. [2023-03-31 22:58:12,053 INFO L895 garLoopResultBuilder]: At program point L96-3(lines 96 101) the Hoare annotation is: (or (not (= |~#x~0.offset| 0)) (not (= |#NULL.offset| 0)) (not (= |~#a~0.offset| 0)) (< |#StackHeapBarrier| 0) (and (let ((.cse0 (<= 0 main_~j~0)) (.cse1 (= main_~eps~0 (/ 1.0 1000000.0))) (.cse2 (= main_~nmax~0 50))) (or (and .cse0 (= main_~i~0 0) .cse1 .cse2) (and (<= main_~i~0 5) .cse0 .cse1 .cse2 (<= 1 main_~i~0)))) (= 5 main_~n~0)) (not (= |~#b~0.base| 5)) (not (= |~#x~0.base| 6)) (not (= |#NULL.base| 0)) (not (= |~#b~0.offset| 0)) (not (= |~#a~0.base| 4))) [2023-03-31 22:58:12,053 INFO L895 garLoopResultBuilder]: At program point L96-4(lines 96 101) the Hoare annotation is: (or (not (= |~#x~0.offset| 0)) (not (= |#NULL.offset| 0)) (not (= |~#a~0.offset| 0)) (< |#StackHeapBarrier| 0) (not (= |~#b~0.base| 5)) (not (= |~#x~0.base| 6)) (not (= |#NULL.base| 0)) (not (= |~#b~0.offset| 0)) (not (= |~#a~0.base| 4)) (and (< 5 main_~j~0) (let ((.cse0 (= main_~eps~0 (/ 1.0 1000000.0))) (.cse1 (= main_~nmax~0 50))) (or (and (= main_~i~0 0) .cse0 .cse1) (and (<= main_~i~0 5) .cse0 .cse1 (<= 1 main_~i~0)))) (= 5 main_~n~0))) [2023-03-31 22:58:12,053 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(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|)) [2023-03-31 22:58:12,053 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-03-31 22:58:12,053 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-03-31 22:58:12,054 INFO L895 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (and (= |~#b~0.offset| 0) (= |~#x~0.offset| 0) (= |~#b~0.base| 5) (= |~#x~0.base| 6) (= |#NULL.offset| 0) (= |~#a~0.offset| 0) (= |~#a~0.base| 4) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2023-03-31 22:58:12,054 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-03-31 22:58:12,054 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 22:58:12,054 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2023-03-31 22:58:12,054 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 5 10) the Hoare annotation is: true [2023-03-31 22:58:12,054 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2023-03-31 22:58:12,054 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2023-03-31 22:58:12,054 INFO L899 garLoopResultBuilder]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2023-03-31 22:58:12,055 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2023-03-31 22:58:12,057 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-03-31 22:58:12,059 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 22:58:12,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 10:58:12 BoogieIcfgContainer [2023-03-31 22:58:12,076 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 22:58:12,076 INFO L158 Benchmark]: Toolchain (without parser) took 5511.78ms. Allocated memory was 225.4MB in the beginning and 270.5MB in the end (delta: 45.1MB). Free memory was 175.5MB in the beginning and 118.8MB in the end (delta: 56.7MB). Peak memory consumption was 131.6MB. Max. memory is 8.0GB. [2023-03-31 22:58:12,076 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 187.7MB. Free memory is still 132.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 22:58:12,077 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.98ms. Allocated memory is still 225.4MB. Free memory was 175.5MB in the beginning and 163.4MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-03-31 22:58:12,077 INFO L158 Benchmark]: Boogie Preprocessor took 65.62ms. Allocated memory is still 225.4MB. Free memory was 163.4MB in the beginning and 160.8MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-03-31 22:58:12,077 INFO L158 Benchmark]: RCFGBuilder took 626.80ms. Allocated memory is still 225.4MB. Free memory was 160.8MB in the beginning and 136.7MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-03-31 22:58:12,077 INFO L158 Benchmark]: TraceAbstraction took 4555.68ms. Allocated memory was 225.4MB in the beginning and 270.5MB in the end (delta: 45.1MB). Free memory was 136.2MB in the beginning and 118.8MB in the end (delta: 17.4MB). Peak memory consumption was 92.8MB. Max. memory is 8.0GB. [2023-03-31 22:58:12,079 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 187.7MB. Free memory is still 132.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 258.98ms. Allocated memory is still 225.4MB. Free memory was 175.5MB in the beginning and 163.4MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 65.62ms. Allocated memory is still 225.4MB. Free memory was 163.4MB in the beginning and 160.8MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 626.80ms. Allocated memory is still 225.4MB. Free memory was 160.8MB in the beginning and 136.7MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * TraceAbstraction took 4555.68ms. Allocated memory was 225.4MB in the beginning and 270.5MB in the end (delta: 45.1MB). Free memory was 136.2MB in the beginning and 118.8MB in the end (delta: 17.4MB). Peak memory consumption was 92.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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, 41 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.5s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 89 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 162 IncrementalHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 42 mSDtfsCounter, 162 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 23, 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 35 PreInvPairs, 44 NumberOfFragments, 372 HoareAnnotationTreeSize, 35 FomulaSimplifications, 63 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 21 FomulaSimplificationsInter, 1056 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 147 SizeOfPredicates, 2 NumberOfNonLiveVariables, 180 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 23/31 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 0.9s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 18, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 29, TOOLS_POST_TIME: 0.5s, TOOLS_POST_CALL_APPLICATIONS: 11, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 8, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 48, TOOLS_QUANTIFIERELIM_TIME: 0.7s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 86, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 8, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 5, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 10, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 18, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 5, LOOP_SUMMARIZER_CACHE_MISSES: 5, LOOP_SUMMARIZER_OVERALL_TIME: 0.4s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.4s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 10, CALL_SUMMARIZER_APPLICATIONS: 8, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 137, DAG_COMPRESSION_RETAINED_NODES: 63, 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: (((((((((!(x == 0) || !(#NULL == 0)) || !(a == 0)) || unknown-#StackHeapBarrier-unknown < 0) || ((((5 <= j && 0 <= i) && eps == 1/1000000) && nmax == 50) && 5 == n)) || !(b == 5)) || !(x == 6)) || (((((((\old(unknown-#length-unknown) == unknown-#length-unknown && \old(unknown-#memory_real-unknown) == unknown-#memory_real-unknown) && unknown-#memory_int-unknown == \old(unknown-#memory_int-unknown)) && i == 0) && eps == 1/1000000) && nmax == 50) && \old(\valid) == \valid) && 5 == n)) || !(#NULL == 0)) || !(b == 0)) || !(a == 4) - 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: ((((((((!(x == 0) || !(#NULL == 0)) || !(a == 0)) || unknown-#StackHeapBarrier-unknown < 0) || (((((0 <= j && i == 0) && eps == 1/1000000) && nmax == 50) || ((((i <= 5 && 0 <= j) && eps == 1/1000000) && nmax == 50) && 1 <= i)) && 5 == n)) || !(b == 5)) || !(x == 6)) || !(#NULL == 0)) || !(b == 0)) || !(a == 4) - 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! [2023-03-31 22:58:12,101 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...