./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-regression/test11.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash de0ee98d0beeed0f9ecb516c00b0addb60c3ca93 ................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 09:05:58,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 09:05:58,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 09:05:58,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 09:05:58,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 09:05:58,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 09:05:58,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 09:05:58,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 09:05:58,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 09:05:58,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 09:05:58,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 09:05:58,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 09:05:58,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 09:05:58,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 09:05:58,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 09:05:58,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 09:05:58,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 09:05:58,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 09:05:58,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 09:05:58,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 09:05:58,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 09:05:58,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 09:05:58,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 09:05:58,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 09:05:58,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 09:05:58,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 09:05:58,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 09:05:58,987 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 09:05:58,987 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 09:05:58,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 09:05:58,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 09:05:58,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 09:05:58,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 09:05:58,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 09:05:58,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 09:05:58,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 09:05:58,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 09:05:58,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 09:05:58,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 09:05:58,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 09:05:58,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 09:05:58,996 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 09:05:59,018 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 09:05:59,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 09:05:59,019 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 09:05:59,019 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 09:05:59,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 09:05:59,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 09:05:59,021 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 09:05:59,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 09:05:59,021 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 09:05:59,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 09:05:59,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 09:05:59,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 09:05:59,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 09:05:59,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 09:05:59,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 09:05:59,023 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 09:05:59,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 09:05:59,023 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 09:05:59,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 09:05:59,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 09:05:59,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 09:05:59,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 09:05:59,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 09:05:59,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 09:05:59,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 09:05:59,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 09:05:59,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 09:05:59,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 09:05:59,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 09:05:59,033 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 09:05:59,034 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de0ee98d0beeed0f9ecb516c00b0addb60c3ca93 [2021-08-29 09:05:59,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 09:05:59,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 09:05:59,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 09:05:59,299 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 09:05:59,300 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 09:05:59,301 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test11.c [2021-08-29 09:05:59,348 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b69264ba/ee9e0ec433d84f6c98128b8747e9d655/FLAGa34441fad [2021-08-29 09:05:59,712 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 09:05:59,712 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test11.c [2021-08-29 09:05:59,717 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b69264ba/ee9e0ec433d84f6c98128b8747e9d655/FLAGa34441fad [2021-08-29 09:05:59,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b69264ba/ee9e0ec433d84f6c98128b8747e9d655 [2021-08-29 09:05:59,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 09:05:59,733 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 09:05:59,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 09:05:59,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 09:05:59,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 09:05:59,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:05:59" (1/1) ... [2021-08-29 09:05:59,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72debabf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:59, skipping insertion in model container [2021-08-29 09:05:59,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:05:59" (1/1) ... [2021-08-29 09:05:59,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 09:05:59,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 09:05:59,879 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test11.c[823,836] [2021-08-29 09:05:59,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 09:05:59,888 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 09:05:59,899 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test11.c[823,836] [2021-08-29 09:05:59,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 09:05:59,942 INFO L208 MainTranslator]: Completed translation [2021-08-29 09:05:59,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:59 WrapperNode [2021-08-29 09:05:59,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 09:05:59,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 09:05:59,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 09:05:59,945 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 09:05:59,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:59" (1/1) ... [2021-08-29 09:05:59,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:59" (1/1) ... [2021-08-29 09:05:59,971 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 09:05:59,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 09:05:59,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 09:05:59,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 09:05:59,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:59" (1/1) ... [2021-08-29 09:05:59,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:59" (1/1) ... [2021-08-29 09:05:59,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:59" (1/1) ... [2021-08-29 09:05:59,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:59" (1/1) ... [2021-08-29 09:05:59,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:59" (1/1) ... [2021-08-29 09:05:59,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:59" (1/1) ... [2021-08-29 09:06:00,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:59" (1/1) ... [2021-08-29 09:06:00,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 09:06:00,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 09:06:00,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 09:06:00,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 09:06:00,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:59" (1/1) ... [2021-08-29 09:06:00,011 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 09:06:00,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 09:06:00,031 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) [2021-08-29 09:06:00,038 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 [2021-08-29 09:06:00,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 09:06:00,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 09:06:00,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 09:06:00,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 09:06:00,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 09:06:00,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-29 09:06:00,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 09:06:00,186 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 09:06:00,186 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-29 09:06:00,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:06:00 BoogieIcfgContainer [2021-08-29 09:06:00,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 09:06:00,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 09:06:00,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 09:06:00,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 09:06:00,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:05:59" (1/3) ... [2021-08-29 09:06:00,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43252d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:06:00, skipping insertion in model container [2021-08-29 09:06:00,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:59" (2/3) ... [2021-08-29 09:06:00,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43252d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:06:00, skipping insertion in model container [2021-08-29 09:06:00,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:06:00" (3/3) ... [2021-08-29 09:06:00,194 INFO L111 eAbstractionObserver]: Analyzing ICFG test11.c [2021-08-29 09:06:00,199 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 09:06:00,199 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 09:06:00,239 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 09:06:00,250 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 09:06:00,251 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 09:06:00,261 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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) [2021-08-29 09:06:00,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 09:06:00,266 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:06:00,266 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:06:00,267 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 09:06:00,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:06:00,272 INFO L82 PathProgramCache]: Analyzing trace with hash 119352371, now seen corresponding path program 1 times [2021-08-29 09:06:00,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:06:00,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979763270] [2021-08-29 09:06:00,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:06:00,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:06:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:06:00,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:06:00,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:06:00,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979763270] [2021-08-29 09:06:00,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979763270] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:06:00,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:06:00,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 09:06:00,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499245188] [2021-08-29 09:06:00,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 09:06:00,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:06:00,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 09:06:00,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 09:06:00,558 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-08-29 09:06:00,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:06:00,625 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2021-08-29 09:06:00,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 09:06:00,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-29 09:06:00,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:06:00,631 INFO L225 Difference]: With dead ends: 22 [2021-08-29 09:06:00,631 INFO L226 Difference]: Without dead ends: 12 [2021-08-29 09:06:00,633 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.67ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 09:06:00,635 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.67ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.82ms IncrementalHoareTripleChecker+Time [2021-08-29 09:06:00,636 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 31 Unknown, 0 Unchecked, 0.67ms Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 47.82ms Time] [2021-08-29 09:06:00,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-08-29 09:06:00,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-08-29 09:06:00,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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) [2021-08-29 09:06:00,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-08-29 09:06:00,680 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2021-08-29 09:06:00,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:06:00,680 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-08-29 09:06:00,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-08-29 09:06:00,680 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-08-29 09:06:00,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 09:06:00,681 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:06:00,681 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:06:00,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 09:06:00,681 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 09:06:00,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:06:00,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1264891367, now seen corresponding path program 1 times [2021-08-29 09:06:00,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:06:00,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033839669] [2021-08-29 09:06:00,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:06:00,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:06:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:06:00,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:06:00,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:06:00,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033839669] [2021-08-29 09:06:00,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033839669] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:06:00,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:06:00,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 09:06:00,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158392360] [2021-08-29 09:06:00,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 09:06:00,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:06:00,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 09:06:00,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 09:06:00,769 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-08-29 09:06:00,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:06:00,819 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-08-29 09:06:00,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 09:06:00,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-29 09:06:00,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:06:00,821 INFO L225 Difference]: With dead ends: 14 [2021-08-29 09:06:00,821 INFO L226 Difference]: Without dead ends: 12 [2021-08-29 09:06:00,824 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.07ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-29 09:06:00,826 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.53ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.99ms IncrementalHoareTripleChecker+Time [2021-08-29 09:06:00,827 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 44 Unknown, 0 Unchecked, 0.53ms Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 32.99ms Time] [2021-08-29 09:06:00,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-08-29 09:06:00,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-08-29 09:06:00,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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) [2021-08-29 09:06:00,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-08-29 09:06:00,832 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2021-08-29 09:06:00,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:06:00,832 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-08-29 09:06:00,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-08-29 09:06:00,834 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-08-29 09:06:00,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 09:06:00,834 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:06:00,835 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:06:00,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 09:06:00,835 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 09:06:00,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:06:00,836 INFO L82 PathProgramCache]: Analyzing trace with hash -556924879, now seen corresponding path program 1 times [2021-08-29 09:06:00,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:06:00,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439123728] [2021-08-29 09:06:00,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:06:00,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:06:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:06:00,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:06:00,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:06:00,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439123728] [2021-08-29 09:06:00,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439123728] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:06:00,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:06:00,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 09:06:00,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070644115] [2021-08-29 09:06:00,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 09:06:00,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:06:00,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 09:06:00,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 09:06:00,915 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-08-29 09:06:00,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:06:00,947 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2021-08-29 09:06:00,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 09:06:00,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-29 09:06:00,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:06:00,948 INFO L225 Difference]: With dead ends: 12 [2021-08-29 09:06:00,948 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 09:06:00,948 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.14ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 09:06:00,954 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.41ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.80ms IncrementalHoareTripleChecker+Time [2021-08-29 09:06:00,955 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 22 Unknown, 0 Unchecked, 0.41ms Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 22.80ms Time] [2021-08-29 09:06:00,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 09:06:00,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 09:06:00,957 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) [2021-08-29 09:06:00,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 09:06:00,958 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-08-29 09:06:00,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:06:00,958 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 09:06:00,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-08-29 09:06:00,958 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 09:06:00,958 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 09:06:00,960 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 09:06:00,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 09:06:00,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 09:06:00,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 09:06:00,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 09:06:00,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 09:06:00,978 INFO L854 garLoopResultBuilder]: At program point L33(lines 14 34) the Hoare annotation is: (not (= ULTIMATE.start_main_~pc~0.base 0)) [2021-08-29 09:06:00,978 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 09:06:00,978 INFO L854 garLoopResultBuilder]: At program point L27(lines 14 34) the Hoare annotation is: false [2021-08-29 09:06:00,978 INFO L858 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2021-08-29 09:06:00,978 INFO L858 garLoopResultBuilder]: For program point L21-2(line 21) no Hoare annotation was computed. [2021-08-29 09:06:00,979 INFO L858 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2021-08-29 09:06:00,979 INFO L858 garLoopResultBuilder]: For program point L11-2(line 11) no Hoare annotation was computed. [2021-08-29 09:06:00,979 INFO L854 garLoopResultBuilder]: At program point L11-3(lines 9 12) the Hoare annotation is: (and (= ULTIMATE.start_main_~pc~0.base |ULTIMATE.start_main_~#c~0.base|) (= ULTIMATE.start_main_~pc~0.offset |ULTIMATE.start_main_~#c~0.offset|) (not (= ULTIMATE.start_main_~pc~0.base 0))) [2021-08-29 09:06:00,979 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 09:06:00,979 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 09:06:00,979 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 09:06:00,979 INFO L858 garLoopResultBuilder]: For program point L26(lines 26 28) no Hoare annotation was computed. [2021-08-29 09:06:00,980 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 32) no Hoare annotation was computed. [2021-08-29 09:06:00,980 INFO L858 garLoopResultBuilder]: For program point L20(lines 20 21) no Hoare annotation was computed. [2021-08-29 09:06:00,980 INFO L858 garLoopResultBuilder]: For program point L20-2(lines 20 23) no Hoare annotation was computed. [2021-08-29 09:06:00,985 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 09:06:01,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 09:06:01 BoogieIcfgContainer [2021-08-29 09:06:01,001 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 09:06:01,002 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 09:06:01,002 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 09:06:01,003 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 09:06:01,003 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:06:00" (3/4) ... [2021-08-29 09:06:01,005 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 09:06:01,013 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-29 09:06:01,013 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 09:06:01,014 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 09:06:01,014 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 09:06:01,038 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 09:06:01,038 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 09:06:01,039 INFO L158 Benchmark]: Toolchain (without parser) took 1305.66ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.7MB in the beginning and 38.1MB in the end (delta: -8.4MB). Peak memory consumption was 1.2MB. Max. memory is 16.1GB. [2021-08-29 09:06:01,039 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 52.4MB. Free memory was 34.7MB in the beginning and 34.7MB in the end (delta: 37.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 09:06:01,039 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.63ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.4MB in the beginning and 46.7MB in the end (delta: -17.3MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2021-08-29 09:06:01,039 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.28ms. Allocated memory is still 62.9MB. Free memory was 46.7MB in the beginning and 45.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 09:06:01,040 INFO L158 Benchmark]: Boogie Preprocessor took 31.59ms. Allocated memory is still 62.9MB. Free memory was 45.2MB in the beginning and 44.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 09:06:01,040 INFO L158 Benchmark]: RCFGBuilder took 183.32ms. Allocated memory is still 62.9MB. Free memory was 44.1MB in the beginning and 34.7MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 09:06:01,040 INFO L158 Benchmark]: TraceAbstraction took 811.96ms. Allocated memory is still 62.9MB. Free memory was 34.1MB in the beginning and 41.3MB in the end (delta: -7.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 09:06:01,040 INFO L158 Benchmark]: Witness Printer took 36.01ms. Allocated memory is still 62.9MB. Free memory was 41.1MB in the beginning and 38.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 09:06:01,042 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 52.4MB. Free memory was 34.7MB in the beginning and 34.7MB in the end (delta: 37.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 209.63ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.4MB in the beginning and 46.7MB in the end (delta: -17.3MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.28ms. Allocated memory is still 62.9MB. Free memory was 46.7MB in the beginning and 45.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.59ms. Allocated memory is still 62.9MB. Free memory was 45.2MB in the beginning and 44.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 183.32ms. Allocated memory is still 62.9MB. Free memory was 44.1MB in the beginning and 34.7MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 811.96ms. Allocated memory is still 62.9MB. Free memory was 34.1MB in the beginning and 41.3MB in the end (delta: -7.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 36.01ms. Allocated memory is still 62.9MB. Free memory was 41.1MB in the beginning and 38.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 32]: 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 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 747.07ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 8.88ms, AutomataDifference: 215.12ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 16.33ms, InitialAbstractionConstructionTime: 7.35ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 103.61ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 80.08ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 93 IncrementalHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 93 mSolverCounterSat, 1.60ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.88ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 14.06ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 4 NumberOfFragments, 16 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 6.08ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 5.04ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 8.67ms SsaConstructionTime, 71.83ms SatisfiabilityAnalysisTime, 241.76ms InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 118 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: !(pc == 0) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: (pc == c && pc == c) && !(pc == 0) RESULT: Ultimate proved your program to be correct! [2021-08-29 09:06:01,084 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...