./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loops/ludcmp_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/loops/ludcmp_false-unreach-call.i -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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a81eebddb84f05353da2fe57e839b2276721ce6a ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/loops/ludcmp_false-unreach-call.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a81eebddb84f05353da2fe57e839b2276721ce6a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 18:16:53,237 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:16:53,238 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:16:53,257 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:16:53,258 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:16:53,260 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:16:53,264 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:16:53,266 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:16:53,269 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:16:53,272 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:16:53,275 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:16:53,276 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:16:53,277 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:16:53,280 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:16:53,287 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:16:53,289 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:16:53,291 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:16:53,293 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:16:53,298 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:16:53,299 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:16:53,301 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:16:53,302 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:16:53,304 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:16:53,304 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:16:53,305 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:16:53,305 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:16:53,307 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:16:53,308 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:16:53,309 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:16:53,310 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:16:53,310 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:16:53,311 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:16:53,311 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:16:53,311 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:16:53,312 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:16:53,314 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:16:53,314 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:16:53,329 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:16:53,329 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:16:53,330 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:16:53,330 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:16:53,331 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:16:53,332 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:16:53,332 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:16:53,332 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:16:53,332 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:16:53,332 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:16:53,333 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:16:53,333 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:16:53,333 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:16:53,333 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:16:53,333 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:16:53,333 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:16:53,335 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:16:53,335 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:16:53,335 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:16:53,335 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:16:53,336 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:16:53,336 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:16:53,336 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:16:53,337 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:16:53,337 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:16:53,337 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:16:53,337 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:16:53,338 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:16:53,338 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:16:53,338 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:16:53,338 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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(__VERIFIER_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 -> a81eebddb84f05353da2fe57e839b2276721ce6a [2018-11-28 18:16:53,381 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:16:53,395 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:16:53,399 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:16:53,400 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:16:53,401 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:16:53,402 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loops/ludcmp_false-unreach-call.i [2018-11-28 18:16:53,467 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7b2cfe6c/fa0463fa99cf498ab350cd142d100b30/FLAG1cffacd65 [2018-11-28 18:16:53,957 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:16:53,958 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loops/ludcmp_false-unreach-call.i [2018-11-28 18:16:53,966 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7b2cfe6c/fa0463fa99cf498ab350cd142d100b30/FLAG1cffacd65 [2018-11-28 18:16:54,314 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7b2cfe6c/fa0463fa99cf498ab350cd142d100b30 [2018-11-28 18:16:54,318 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:16:54,320 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:16:54,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:16:54,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:16:54,325 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:16:54,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:16:54" (1/1) ... [2018-11-28 18:16:54,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ef72e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:16:54, skipping insertion in model container [2018-11-28 18:16:54,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:16:54" (1/1) ... [2018-11-28 18:16:54,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:16:54,364 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:16:54,626 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:16:54,773 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:16:54,835 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:16:54,859 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:16:54,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:16:54 WrapperNode [2018-11-28 18:16:54,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:16:54,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:16:54,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:16:54,861 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:16:54,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:16:54" (1/1) ... [2018-11-28 18:16:54,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:16:54" (1/1) ... [2018-11-28 18:16:54,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:16:54,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:16:54,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:16:54,956 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:16:54,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:16:54" (1/1) ... [2018-11-28 18:16:54,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:16:54" (1/1) ... [2018-11-28 18:16:54,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:16:54" (1/1) ... [2018-11-28 18:16:54,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:16:54" (1/1) ... [2018-11-28 18:16:54,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:16:54" (1/1) ... [2018-11-28 18:16:54,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:16:54" (1/1) ... [2018-11-28 18:16:55,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:16:54" (1/1) ... [2018-11-28 18:16:55,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:16:55,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:16:55,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:16:55,006 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:16:55,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:16:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:16:55,070 INFO L130 BoogieDeclarations]: Found specification of procedure ludcmp [2018-11-28 18:16:55,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ludcmp [2018-11-28 18:16:55,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-28 18:16:55,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:16:55,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:16:55,072 INFO L130 BoogieDeclarations]: Found specification of procedure fabs [2018-11-28 18:16:55,072 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs [2018-11-28 18:16:55,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-28 18:16:55,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:16:55,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:16:55,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:16:55,073 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:16:55,073 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:16:55,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 18:16:55,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 18:16:55,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:16:55,834 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:16:55,834 INFO L280 CfgBuilder]: Removed 11 assue(true) statements. [2018-11-28 18:16:55,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:16:55 BoogieIcfgContainer [2018-11-28 18:16:55,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:16:55,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:16:55,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:16:55,840 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:16:55,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:16:54" (1/3) ... [2018-11-28 18:16:55,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e649d79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:16:55, skipping insertion in model container [2018-11-28 18:16:55,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:16:54" (2/3) ... [2018-11-28 18:16:55,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e649d79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:16:55, skipping insertion in model container [2018-11-28 18:16:55,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:16:55" (3/3) ... [2018-11-28 18:16:55,844 INFO L112 eAbstractionObserver]: Analyzing ICFG ludcmp_false-unreach-call.i [2018-11-28 18:16:55,855 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:16:55,863 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:16:55,881 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:16:55,915 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:16:55,916 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:16:55,916 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:16:55,916 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:16:55,916 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:16:55,917 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:16:55,917 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:16:55,917 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:16:55,917 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:16:55,936 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2018-11-28 18:16:55,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-28 18:16:55,941 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:16:55,942 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:16:55,945 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:16:55,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:16:55,951 INFO L82 PathProgramCache]: Analyzing trace with hash 406725423, now seen corresponding path program 1 times [2018-11-28 18:16:55,952 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:16:55,953 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:16:56,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:16:56,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:16:56,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:16:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:16:56,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:16:56,127 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:16:56,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:16:56,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:16:56,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:16:56,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:16:56,152 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 2 states. [2018-11-28 18:16:56,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:16:56,183 INFO L93 Difference]: Finished difference Result 122 states and 178 transitions. [2018-11-28 18:16:56,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:16:56,185 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-11-28 18:16:56,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:16:56,193 INFO L225 Difference]: With dead ends: 122 [2018-11-28 18:16:56,194 INFO L226 Difference]: Without dead ends: 20 [2018-11-28 18:16:56,198 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:16:56,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-28 18:16:56,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-11-28 18:16:56,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-28 18:16:56,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-11-28 18:16:56,239 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 12 [2018-11-28 18:16:56,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:16:56,240 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-11-28 18:16:56,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:16:56,240 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-11-28 18:16:56,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-28 18:16:56,241 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:16:56,241 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:16:56,241 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:16:56,242 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:16:56,242 INFO L82 PathProgramCache]: Analyzing trace with hash 394719650, now seen corresponding path program 1 times [2018-11-28 18:16:56,242 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:16:56,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:16:56,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:16:56,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:16:56,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:16:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:16:56,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:16:56,544 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:16:56,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:16:56,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:16:56,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:16:56,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:16:56,551 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 4 states. [2018-11-28 18:16:56,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:16:56,695 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2018-11-28 18:16:56,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:16:56,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-11-28 18:16:56,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:16:56,697 INFO L225 Difference]: With dead ends: 38 [2018-11-28 18:16:56,697 INFO L226 Difference]: Without dead ends: 24 [2018-11-28 18:16:56,699 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:16:56,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-28 18:16:56,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2018-11-28 18:16:56,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-28 18:16:56,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-11-28 18:16:56,705 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 12 [2018-11-28 18:16:56,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:16:56,706 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-11-28 18:16:56,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:16:56,706 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-11-28 18:16:56,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 18:16:56,707 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:16:56,707 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:16:56,707 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:16:56,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:16:56,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1180233829, now seen corresponding path program 1 times [2018-11-28 18:16:56,709 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:16:56,709 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:16:56,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:16:56,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:16:56,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:16:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:16:56,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:16:56,881 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:16:56,881 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:16:56,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:16:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:16:56,964 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:16:57,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:16:57,172 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:16:57,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-11-28 18:16:57,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 18:16:57,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 18:16:57,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:16:57,176 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 7 states. [2018-11-28 18:16:57,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:16:57,287 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2018-11-28 18:16:57,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 18:16:57,290 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-11-28 18:16:57,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:16:57,291 INFO L225 Difference]: With dead ends: 43 [2018-11-28 18:16:57,292 INFO L226 Difference]: Without dead ends: 28 [2018-11-28 18:16:57,293 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:16:57,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-28 18:16:57,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2018-11-28 18:16:57,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-28 18:16:57,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2018-11-28 18:16:57,304 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2018-11-28 18:16:57,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:16:57,306 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-11-28 18:16:57,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 18:16:57,307 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2018-11-28 18:16:57,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 18:16:57,309 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:16:57,309 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:16:57,310 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:16:57,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:16:57,310 INFO L82 PathProgramCache]: Analyzing trace with hash -232421100, now seen corresponding path program 2 times [2018-11-28 18:16:57,310 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:16:57,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:16:57,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:16:57,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:16:57,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:16:57,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:16:57,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:16:57,544 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:16:57,544 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:16:57,554 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 18:16:57,586 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 18:16:57,586 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 18:16:57,588 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:16:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:16:57,776 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:16:57,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-11-28 18:16:57,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 18:16:57,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 18:16:57,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-11-28 18:16:57,778 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 9 states. [2018-11-28 18:16:57,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:16:57,907 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2018-11-28 18:16:57,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 18:16:57,908 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2018-11-28 18:16:57,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:16:57,909 INFO L225 Difference]: With dead ends: 51 [2018-11-28 18:16:57,909 INFO L226 Difference]: Without dead ends: 32 [2018-11-28 18:16:57,909 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-11-28 18:16:57,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-28 18:16:57,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2018-11-28 18:16:57,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-28 18:16:57,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2018-11-28 18:16:57,919 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 20 [2018-11-28 18:16:57,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:16:57,922 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2018-11-28 18:16:57,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 18:16:57,922 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2018-11-28 18:16:57,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 18:16:57,923 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:16:57,923 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:16:57,924 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:16:57,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:16:57,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1802018317, now seen corresponding path program 3 times [2018-11-28 18:16:57,924 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:16:57,925 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:16:57,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:16:57,926 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 18:16:57,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:16:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:16:58,345 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:16:58,345 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:16:58,346 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:16:58,358 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 18:16:58,410 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-28 18:16:58,410 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 18:16:58,413 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:16:58,438 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-28 18:16:58,464 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 18:16:58,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2018-11-28 18:16:58,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 18:16:58,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 18:16:58,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-28 18:16:58,465 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 9 states. [2018-11-28 18:16:58,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:16:58,933 INFO L93 Difference]: Finished difference Result 93 states and 115 transitions. [2018-11-28 18:16:58,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 18:16:58,934 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-11-28 18:16:58,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:16:58,939 INFO L225 Difference]: With dead ends: 93 [2018-11-28 18:16:58,939 INFO L226 Difference]: Without dead ends: 70 [2018-11-28 18:16:58,940 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2018-11-28 18:16:58,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-11-28 18:16:58,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 51. [2018-11-28 18:16:58,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-28 18:16:58,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2018-11-28 18:16:58,955 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 24 [2018-11-28 18:16:58,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:16:58,955 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2018-11-28 18:16:58,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 18:16:58,956 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2018-11-28 18:16:58,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-28 18:16:58,957 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:16:58,957 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:16:58,957 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:16:58,957 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:16:58,957 INFO L82 PathProgramCache]: Analyzing trace with hash -479010360, now seen corresponding path program 1 times [2018-11-28 18:16:58,958 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:16:58,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:16:58,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:16:58,959 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 18:16:58,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:16:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:16:59,201 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:16:59,201 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:16:59,202 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:16:59,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:16:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:16:59,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:16:59,392 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:16:59,411 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:16:59,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-11-28 18:16:59,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 18:16:59,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 18:16:59,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2018-11-28 18:16:59,414 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand 13 states. [2018-11-28 18:16:59,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:16:59,829 INFO L93 Difference]: Finished difference Result 147 states and 178 transitions. [2018-11-28 18:16:59,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 18:16:59,837 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 28 [2018-11-28 18:16:59,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:16:59,838 INFO L225 Difference]: With dead ends: 147 [2018-11-28 18:16:59,838 INFO L226 Difference]: Without dead ends: 105 [2018-11-28 18:16:59,839 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2018-11-28 18:16:59,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-11-28 18:16:59,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 59. [2018-11-28 18:16:59,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-11-28 18:16:59,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2018-11-28 18:16:59,849 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 28 [2018-11-28 18:16:59,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:16:59,850 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2018-11-28 18:16:59,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 18:16:59,850 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2018-11-28 18:16:59,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 18:16:59,851 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:16:59,851 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:16:59,852 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:16:59,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:16:59,852 INFO L82 PathProgramCache]: Analyzing trace with hash -801997631, now seen corresponding path program 2 times [2018-11-28 18:16:59,852 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:16:59,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:16:59,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:16:59,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:16:59,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:16:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:16:59,985 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:16:59,986 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:16:59,986 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:16:59,997 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 18:17:00,055 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 18:17:00,055 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 18:17:00,060 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:17:00,498 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:17:00,528 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:17:00,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2018-11-28 18:17:00,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 18:17:00,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 18:17:00,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2018-11-28 18:17:00,529 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 15 states. [2018-11-28 18:17:00,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:17:00,672 INFO L93 Difference]: Finished difference Result 163 states and 198 transitions. [2018-11-28 18:17:00,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 18:17:00,673 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 32 [2018-11-28 18:17:00,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:17:00,675 INFO L225 Difference]: With dead ends: 163 [2018-11-28 18:17:00,675 INFO L226 Difference]: Without dead ends: 113 [2018-11-28 18:17:00,676 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=139, Unknown=0, NotChecked=0, Total=240 [2018-11-28 18:17:00,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-11-28 18:17:00,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 67. [2018-11-28 18:17:00,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-11-28 18:17:00,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2018-11-28 18:17:00,687 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 32 [2018-11-28 18:17:00,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:17:00,687 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2018-11-28 18:17:00,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 18:17:00,687 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2018-11-28 18:17:00,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-28 18:17:00,688 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:17:00,688 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:17:00,689 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:17:00,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:17:00,689 INFO L82 PathProgramCache]: Analyzing trace with hash -850791622, now seen corresponding path program 3 times [2018-11-28 18:17:00,689 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:17:00,689 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:17:00,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:00,690 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 18:17:00,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:17:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:17:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:17:00,762 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:17:00,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:17:00 BoogieIcfgContainer [2018-11-28 18:17:00,832 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:17:00,832 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:17:00,832 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:17:00,832 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:17:00,833 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:16:55" (3/4) ... [2018-11-28 18:17:00,838 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 18:17:00,838 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:17:00,839 INFO L168 Benchmark]: Toolchain (without parser) took 6520.81 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 954.0 MB in the beginning and 834.7 MB in the end (delta: 119.3 MB). Peak memory consumption was 237.8 MB. Max. memory is 11.5 GB. [2018-11-28 18:17:00,841 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:17:00,842 INFO L168 Benchmark]: CACSL2BoogieTranslator took 539.53 ms. Allocated memory is still 1.0 GB. Free memory was 954.0 MB in the beginning and 925.8 MB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. [2018-11-28 18:17:00,843 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 925.8 MB in the beginning and 1.1 GB in the end (delta: -179.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2018-11-28 18:17:00,844 INFO L168 Benchmark]: Boogie Preprocessor took 49.33 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:17:00,844 INFO L168 Benchmark]: RCFGBuilder took 829.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. [2018-11-28 18:17:00,845 INFO L168 Benchmark]: TraceAbstraction took 4995.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 841.4 MB in the end (delta: 238.5 MB). Peak memory consumption was 238.5 MB. Max. memory is 11.5 GB. [2018-11-28 18:17:00,846 INFO L168 Benchmark]: Witness Printer took 5.98 ms. Allocated memory is still 1.1 GB. Free memory was 841.4 MB in the beginning and 834.7 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:17:00,851 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 539.53 ms. Allocated memory is still 1.0 GB. Free memory was 954.0 MB in the beginning and 925.8 MB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 95.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 925.8 MB in the beginning and 1.1 GB in the end (delta: -179.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.33 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 829.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4995.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 841.4 MB in the end (delta: 238.5 MB). Peak memory consumption was 238.5 MB. Max. memory is 11.5 GB. * Witness Printer took 5.98 ms. Allocated memory is still 1.1 GB. Free memory was 841.4 MB in the beginning and 834.7 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_real at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 30. Possible FailurePath: [L9] double a[50][50], b[50], x[50]; VAL [\old(a)=20010, \old(a)=20014, \old(b)=20006, \old(b)=20017, \old(x)=20008, \old(x)=20007, a={20012:0}, b={1:0}, x={20003:0}] [L20] int i, j, nmax = 50, n = 5, chkerr; [L21] double eps, w; [L22] eps = 1.0e-6 [L23] i = 0 VAL [a={20012:0}, b={1:0}, eps=1/1000000, i=0, n=5, nmax=50, x={20003:0}] [L23] COND TRUE i <= n [L25] w = 0.0 [L26] j = 0 VAL [a={20012:0}, b={1:0}, eps=1/1000000, i=0, j=0, n=5, nmax=50, w=0, x={20003:0}] [L26] COND TRUE j <= n [L28] a[i][j] = (i + 1) + (j + 1) VAL [a={20012:0}, b={1:0}, eps=1/1000000, i=0, j=0, n=5, nmax=50, w=0, x={20003:0}] [L29] COND TRUE i == j [L29] EXPR a[i][j] [L29] a[i][j] *= 10.0 [L30] EXPR a[i][j] [L30] w += a[i][j] [L26] j++ VAL [a={20012:0}, b={1:0}, eps=1/1000000, i=0, j=1, n=5, nmax=50, x={20003:0}] [L26] COND TRUE j <= n [L28] a[i][j] = (i + 1) + (j + 1) VAL [a={20012:0}, b={1:0}, eps=1/1000000, i=0, j=1, n=5, nmax=50, x={20003:0}] [L29] COND FALSE !(i == j) VAL [a={20012:0}, b={1:0}, eps=1/1000000, i=0, j=1, n=5, nmax=50, x={20003:0}] [L30] EXPR a[i][j] [L30] w += a[i][j] [L26] j++ VAL [a={20012:0}, b={1:0}, eps=1/1000000, i=0, j=2, n=5, nmax=50, x={20003:0}] [L26] COND TRUE j <= n [L28] a[i][j] = (i + 1) + (j + 1) VAL [a={20012:0}, b={1:0}, eps=1/1000000, i=0, j=2, n=5, nmax=50, x={20003:0}] [L29] COND FALSE !(i == j) VAL [a={20012:0}, b={1:0}, eps=1/1000000, i=0, j=2, n=5, nmax=50, x={20003:0}] [L30] EXPR a[i][j] [L30] w += a[i][j] [L26] j++ VAL [a={20012:0}, b={1:0}, eps=1/1000000, i=0, j=3, n=5, nmax=50, x={20003:0}] [L26] COND TRUE j <= n [L28] a[i][j] = (i + 1) + (j + 1) VAL [a={20012:0}, b={1:0}, eps=1/1000000, i=0, j=3, n=5, nmax=50, x={20003:0}] [L29] COND FALSE !(i == j) VAL [a={20012:0}, b={1:0}, eps=1/1000000, i=0, j=3, n=5, nmax=50, x={20003:0}] [L30] EXPR a[i][j] [L30] w += a[i][j] [L26] j++ VAL [a={20012:0}, b={1:0}, eps=1/1000000, i=0, j=4, n=5, nmax=50, x={20003:0}] [L26] COND TRUE j <= n [L28] a[i][j] = (i + 1) + (j + 1) VAL [a={20012:0}, b={1:0}, eps=1/1000000, i=0, j=4, n=5, nmax=50, x={20003:0}] [L29] COND FALSE !(i == j) VAL [a={20012:0}, b={1:0}, eps=1/1000000, i=0, j=4, n=5, nmax=50, x={20003:0}] [L30] EXPR a[i][j] [L30] w += a[i][j] [L26] j++ VAL [a={20012:0}, b={1:0}, eps=1/1000000, i=0, j=5, n=5, nmax=50, x={20003:0}] [L26] COND TRUE j <= n [L28] a[i][j] = (i + 1) + (j + 1) VAL [a={20012:0}, b={1:0}, eps=1/1000000, i=0, j=5, n=5, nmax=50, x={20003:0}] [L29] COND FALSE !(i == j) VAL [a={20012:0}, b={1:0}, eps=1/1000000, i=0, j=5, n=5, nmax=50, x={20003:0}] [L30] EXPR a[i][j] [L30] w += a[i][j] [L26] j++ VAL [a={20012:0}, b={1:0}, eps=1/1000000, i=0, j=6, n=5, nmax=50, x={20003:0}] [L26] COND FALSE !(j <= n) VAL [a={20012:0}, b={1:0}, eps=1/1000000, i=0, j=6, n=5, nmax=50, x={20003:0}] [L32] CALL __VERIFIER_assert(i==2) VAL [\old(cond)=0, a={20012:0}, b={1:0}, x={20003:0}] [L4] COND TRUE !(cond) VAL [\old(cond)=0, a={20012:0}, b={1:0}, cond=0, x={20003:0}] [L5] __VERIFIER_error() VAL [\old(cond)=0, a={20012:0}, b={1:0}, cond=0, x={20003:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. UNSAFE Result, 4.9s OverallTime, 8 OverallIterations, 6 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 174 SDtfs, 289 SDslu, 349 SDs, 0 SdLazy, 237 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 165 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 120 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 300 NumberOfCodeBlocks, 296 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 252 ConstructedInterpolants, 0 QuantifiedInterpolants, 22290 SizeOfPredicates, 10 NumberOfNonLiveVariables, 563 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 15/190 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-91b1670 [2018-11-28 18:17:03,314 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:17:03,318 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:17:03,331 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:17:03,332 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:17:03,334 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:17:03,337 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:17:03,340 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:17:03,344 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:17:03,351 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:17:03,352 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:17:03,352 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:17:03,353 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:17:03,354 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:17:03,355 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:17:03,356 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:17:03,356 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:17:03,358 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:17:03,363 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:17:03,364 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:17:03,365 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:17:03,367 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:17:03,373 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:17:03,374 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:17:03,374 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:17:03,375 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:17:03,376 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:17:03,377 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:17:03,377 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:17:03,382 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:17:03,384 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:17:03,386 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:17:03,386 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:17:03,386 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:17:03,388 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:17:03,389 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:17:03,390 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 18:17:03,411 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:17:03,411 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:17:03,412 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:17:03,413 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:17:03,413 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:17:03,413 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:17:03,413 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:17:03,414 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:17:03,414 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:17:03,414 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:17:03,414 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:17:03,414 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:17:03,415 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:17:03,415 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:17:03,415 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 18:17:03,415 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 18:17:03,415 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:17:03,415 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:17:03,416 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:17:03,416 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:17:03,416 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:17:03,416 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:17:03,416 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:17:03,416 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:17:03,417 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:17:03,417 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:17:03,417 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:17:03,417 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:17:03,417 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 18:17:03,417 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:17:03,418 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 18:17:03,418 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 18:17:03,418 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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(__VERIFIER_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 -> a81eebddb84f05353da2fe57e839b2276721ce6a [2018-11-28 18:17:03,456 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:17:03,473 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:17:03,481 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:17:03,483 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:17:03,484 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:17:03,485 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loops/ludcmp_false-unreach-call.i [2018-11-28 18:17:03,561 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/410f856d3/ad061b87bcdd468cbdefee28fcf91315/FLAGa50fa0e04 [2018-11-28 18:17:03,978 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:17:03,979 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loops/ludcmp_false-unreach-call.i [2018-11-28 18:17:03,986 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/410f856d3/ad061b87bcdd468cbdefee28fcf91315/FLAGa50fa0e04 [2018-11-28 18:17:04,352 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/410f856d3/ad061b87bcdd468cbdefee28fcf91315 [2018-11-28 18:17:04,355 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:17:04,356 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:17:04,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:17:04,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:17:04,361 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:17:04,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:17:04" (1/1) ... [2018-11-28 18:17:04,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a828241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:04, skipping insertion in model container [2018-11-28 18:17:04,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:17:04" (1/1) ... [2018-11-28 18:17:04,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:17:04,415 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:17:04,730 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:17:04,988 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:17:05,046 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:17:05,082 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:17:05,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:05 WrapperNode [2018-11-28 18:17:05,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:17:05,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:17:05,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:17:05,084 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:17:05,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:05" (1/1) ... [2018-11-28 18:17:05,170 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:05" (1/1) ... [2018-11-28 18:17:05,179 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:17:05,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:17:05,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:17:05,179 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:17:05,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:05" (1/1) ... [2018-11-28 18:17:05,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:05" (1/1) ... [2018-11-28 18:17:05,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:05" (1/1) ... [2018-11-28 18:17:05,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:05" (1/1) ... [2018-11-28 18:17:05,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:05" (1/1) ... [2018-11-28 18:17:05,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:05" (1/1) ... [2018-11-28 18:17:05,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:05" (1/1) ... [2018-11-28 18:17:05,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:17:05,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:17:05,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:17:05,263 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:17:05,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:17:05,330 INFO L130 BoogieDeclarations]: Found specification of procedure ludcmp [2018-11-28 18:17:05,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ludcmp [2018-11-28 18:17:05,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-11-28 18:17:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:17:05,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:17:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure fabs [2018-11-28 18:17:05,331 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs [2018-11-28 18:17:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:17:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-11-28 18:17:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:17:05,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:17:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:17:05,332 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:17:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 18:17:05,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 18:17:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:17:08,016 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:17:12,595 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:17:13,796 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:17:13,830 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:17:15,972 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:17:18,392 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:17:20,749 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:17:20,854 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:17:21,108 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:17:21,126 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:17:21,126 INFO L280 CfgBuilder]: Removed 11 assue(true) statements. [2018-11-28 18:17:21,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:17:21 BoogieIcfgContainer [2018-11-28 18:17:21,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:17:21,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:17:21,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:17:21,131 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:17:21,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:17:04" (1/3) ... [2018-11-28 18:17:21,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240bbe6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:17:21, skipping insertion in model container [2018-11-28 18:17:21,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:17:05" (2/3) ... [2018-11-28 18:17:21,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240bbe6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:17:21, skipping insertion in model container [2018-11-28 18:17:21,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:17:21" (3/3) ... [2018-11-28 18:17:21,135 INFO L112 eAbstractionObserver]: Analyzing ICFG ludcmp_false-unreach-call.i [2018-11-28 18:17:21,144 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:17:21,152 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:17:21,171 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:17:21,205 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:17:21,206 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:17:21,206 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:17:21,206 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:17:21,206 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:17:21,206 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:17:21,207 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:17:21,207 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:17:21,207 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:17:21,227 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2018-11-28 18:17:21,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-28 18:17:21,233 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:17:21,234 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:17:21,237 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:17:21,242 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:17:21,243 INFO L82 PathProgramCache]: Analyzing trace with hash 406725423, now seen corresponding path program 1 times [2018-11-28 18:17:21,248 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:17:21,248 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-28 18:17:21,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:17:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:17:21,319 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:17:21,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:17:21,335 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:17:21,347 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:17:21,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:17:21,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:17:21,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:17:21,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:17:21,366 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 2 states. [2018-11-28 18:17:21,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:17:21,398 INFO L93 Difference]: Finished difference Result 122 states and 178 transitions. [2018-11-28 18:17:21,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:17:21,399 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-11-28 18:17:21,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:17:21,408 INFO L225 Difference]: With dead ends: 122 [2018-11-28 18:17:21,408 INFO L226 Difference]: Without dead ends: 20 [2018-11-28 18:17:21,414 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:17:21,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-28 18:17:21,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-11-28 18:17:21,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-28 18:17:21,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-11-28 18:17:21,452 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 12 [2018-11-28 18:17:21,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:17:21,452 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-11-28 18:17:21,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:17:21,453 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-11-28 18:17:21,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-28 18:17:21,453 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:17:21,453 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:17:21,454 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:17:21,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:17:21,454 INFO L82 PathProgramCache]: Analyzing trace with hash 394719650, now seen corresponding path program 1 times [2018-11-28 18:17:21,455 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:17:21,455 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-28 18:17:21,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:17:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:17:21,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:17:21,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:17:21,620 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:17:21,635 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:17:21,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:17:21,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:17:21,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:17:21,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:17:21,641 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 4 states. [2018-11-28 18:17:22,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:17:22,617 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2018-11-28 18:17:22,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:17:22,617 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-11-28 18:17:22,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:17:22,619 INFO L225 Difference]: With dead ends: 38 [2018-11-28 18:17:22,619 INFO L226 Difference]: Without dead ends: 24 [2018-11-28 18:17:22,620 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:17:22,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-28 18:17:22,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2018-11-28 18:17:22,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-28 18:17:22,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-11-28 18:17:22,625 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 12 [2018-11-28 18:17:22,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:17:22,626 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-11-28 18:17:22,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:17:22,626 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-11-28 18:17:22,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 18:17:22,627 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:17:22,627 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:17:22,627 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:17:22,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:17:22,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1180233829, now seen corresponding path program 1 times [2018-11-28 18:17:22,628 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:17:22,628 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-28 18:17:22,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:17:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:17:22,783 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:17:22,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:17:22,808 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:17:22,822 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:17:22,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:17:22,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:17:22,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:17:22,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:17:22,824 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 4 states. [2018-11-28 18:17:24,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:17:24,233 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2018-11-28 18:17:24,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:17:24,235 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-11-28 18:17:24,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:17:24,238 INFO L225 Difference]: With dead ends: 48 [2018-11-28 18:17:24,239 INFO L226 Difference]: Without dead ends: 33 [2018-11-28 18:17:24,239 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:17:24,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-28 18:17:24,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 24. [2018-11-28 18:17:24,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 18:17:24,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2018-11-28 18:17:24,251 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 16 [2018-11-28 18:17:24,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:17:24,251 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2018-11-28 18:17:24,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:17:24,252 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2018-11-28 18:17:24,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 18:17:24,253 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:17:24,253 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:17:24,253 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:17:24,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:17:24,254 INFO L82 PathProgramCache]: Analyzing trace with hash -370887203, now seen corresponding path program 1 times [2018-11-28 18:17:24,254 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:17:24,254 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-28 18:17:24,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:17:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:17:24,487 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:17:24,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:17:24,553 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:17:24,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:17:24,654 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:17:24,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-11-28 18:17:24,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:17:24,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:17:24,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:17:24,655 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 8 states. [2018-11-28 18:17:26,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:17:26,742 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2018-11-28 18:17:26,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 18:17:26,743 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-11-28 18:17:26,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:17:26,744 INFO L225 Difference]: With dead ends: 51 [2018-11-28 18:17:26,744 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 18:17:26,745 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-11-28 18:17:26,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 18:17:26,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-28 18:17:26,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 18:17:26,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2018-11-28 18:17:26,753 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 16 [2018-11-28 18:17:26,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:17:26,753 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2018-11-28 18:17:26,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:17:26,754 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2018-11-28 18:17:26,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-28 18:17:26,755 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:17:26,755 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:17:26,756 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:17:26,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:17:26,756 INFO L82 PathProgramCache]: Analyzing trace with hash -479010360, now seen corresponding path program 1 times [2018-11-28 18:17:26,756 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:17:26,756 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-28 18:17:26,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:17:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:17:27,257 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:17:27,379 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:17:27,380 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 18:17:27,631 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:17:27,649 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:17:27,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-11-28 18:17:27,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-28 18:17:27,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-28 18:17:27,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-11-28 18:17:27,651 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 14 states. [2018-11-28 18:17:30,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:17:30,992 INFO L93 Difference]: Finished difference Result 71 states and 85 transitions. [2018-11-28 18:17:30,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 18:17:30,992 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2018-11-28 18:17:30,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:17:30,994 INFO L225 Difference]: With dead ends: 71 [2018-11-28 18:17:30,994 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 18:17:30,995 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2018-11-28 18:17:30,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 18:17:31,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-28 18:17:31,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 18:17:31,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2018-11-28 18:17:31,004 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 28 [2018-11-28 18:17:31,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:17:31,004 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2018-11-28 18:17:31,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-28 18:17:31,005 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2018-11-28 18:17:31,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-28 18:17:31,006 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:17:31,006 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:17:31,006 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:17:31,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:17:31,007 INFO L82 PathProgramCache]: Analyzing trace with hash -850791622, now seen corresponding path program 2 times [2018-11-28 18:17:31,007 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:17:31,007 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-11-28 18:17:31,012 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-28 18:17:31,796 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 18:17:31,796 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 18:17:31,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:17:31,989 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 17 [2018-11-28 18:17:31,996 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 16 [2018-11-28 18:17:31,997 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 18:17:32,003 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 18:17:32,597 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-28 18:17:32,597 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:44, output treesize:40 [2018-11-28 18:17:33,164 WARN L180 SmtUtils]: Spent 523.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-11-28 18:17:33,317 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-11-28 18:17:33,318 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:17:33,342 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:17:33,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 18:17:33,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 18:17:33,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 18:17:33,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 18:17:33,343 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 6 states. [2018-11-28 18:17:33,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:17:33,476 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2018-11-28 18:17:33,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 18:17:33,491 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2018-11-28 18:17:33,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:17:33,491 INFO L225 Difference]: With dead ends: 44 [2018-11-28 18:17:33,491 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 18:17:33,492 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 18:17:33,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 18:17:33,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 18:17:33,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 18:17:33,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 18:17:33,493 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2018-11-28 18:17:33,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:17:33,493 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 18:17:33,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 18:17:33,493 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 18:17:33,494 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 18:17:33,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 18:17:33,838 WARN L180 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 14 [2018-11-28 18:17:33,907 INFO L448 ceAbstractionStarter]: For program point L44-2(lines 44 62) no Hoare annotation was computed. [2018-11-28 18:17:33,908 INFO L451 ceAbstractionStarter]: At program point L44-3(lines 44 62) the Hoare annotation is: true [2018-11-28 18:17:33,908 INFO L448 ceAbstractionStarter]: For program point L44-4(lines 44 62) no Hoare annotation was computed. [2018-11-28 18:17:33,908 INFO L448 ceAbstractionStarter]: For program point ludcmpEXIT(lines 39 80) no Hoare annotation was computed. [2018-11-28 18:17:33,908 INFO L451 ceAbstractionStarter]: At program point L46(line 46) the Hoare annotation is: true [2018-11-28 18:17:33,908 INFO L448 ceAbstractionStarter]: For program point L46-1(line 46) no Hoare annotation was computed. [2018-11-28 18:17:33,908 INFO L451 ceAbstractionStarter]: At program point ludcmpENTRY(lines 39 80) the Hoare annotation is: true [2018-11-28 18:17:33,908 INFO L448 ceAbstractionStarter]: For program point L55-2(lines 55 61) no Hoare annotation was computed. [2018-11-28 18:17:33,908 INFO L451 ceAbstractionStarter]: At program point L55-3(lines 55 61) the Hoare annotation is: true [2018-11-28 18:17:33,909 INFO L448 ceAbstractionStarter]: For program point L47-2(lines 47 54) no Hoare annotation was computed. [2018-11-28 18:17:33,909 INFO L451 ceAbstractionStarter]: At program point L47-3(lines 47 54) the Hoare annotation is: true [2018-11-28 18:17:33,909 INFO L448 ceAbstractionStarter]: For program point L47-4(lines 47 54) no Hoare annotation was computed. [2018-11-28 18:17:33,909 INFO L448 ceAbstractionStarter]: For program point ludcmpFINAL(lines 39 80) no Hoare annotation was computed. [2018-11-28 18:17:33,909 INFO L448 ceAbstractionStarter]: For program point L72-2(lines 72 78) no Hoare annotation was computed. [2018-11-28 18:17:33,909 INFO L451 ceAbstractionStarter]: At program point L72-3(lines 72 78) the Hoare annotation is: true [2018-11-28 18:17:33,909 INFO L448 ceAbstractionStarter]: For program point L72-4(lines 72 78) no Hoare annotation was computed. [2018-11-28 18:17:33,909 INFO L448 ceAbstractionStarter]: For program point L64-2(lines 64 70) no Hoare annotation was computed. [2018-11-28 18:17:33,910 INFO L451 ceAbstractionStarter]: At program point L64-3(lines 64 70) the Hoare annotation is: true [2018-11-28 18:17:33,910 INFO L448 ceAbstractionStarter]: For program point L64-4(lines 64 70) no Hoare annotation was computed. [2018-11-28 18:17:33,910 INFO L448 ceAbstractionStarter]: For program point L58-2(lines 58 59) no Hoare annotation was computed. [2018-11-28 18:17:33,910 INFO L451 ceAbstractionStarter]: At program point L58-3(lines 58 59) the Hoare annotation is: true [2018-11-28 18:17:33,910 INFO L448 ceAbstractionStarter]: For program point L58-4(lines 58 59) no Hoare annotation was computed. [2018-11-28 18:17:33,910 INFO L448 ceAbstractionStarter]: For program point L50(lines 50 52) no Hoare annotation was computed. [2018-11-28 18:17:33,910 INFO L448 ceAbstractionStarter]: For program point L50-1(lines 50 52) no Hoare annotation was computed. [2018-11-28 18:17:33,910 INFO L448 ceAbstractionStarter]: For program point L75-2(lines 75 76) no Hoare annotation was computed. [2018-11-28 18:17:33,911 INFO L451 ceAbstractionStarter]: At program point L75-3(lines 75 76) the Hoare annotation is: true [2018-11-28 18:17:33,911 INFO L448 ceAbstractionStarter]: For program point L75-4(lines 75 76) no Hoare annotation was computed. [2018-11-28 18:17:33,911 INFO L448 ceAbstractionStarter]: For program point L67-2(lines 67 68) no Hoare annotation was computed. [2018-11-28 18:17:33,911 INFO L451 ceAbstractionStarter]: At program point L67-3(lines 67 68) the Hoare annotation is: true [2018-11-28 18:17:33,911 INFO L448 ceAbstractionStarter]: For program point L67-4(lines 67 68) no Hoare annotation was computed. [2018-11-28 18:17:33,911 INFO L448 ceAbstractionStarter]: For program point L51-2(lines 51 52) no Hoare annotation was computed. [2018-11-28 18:17:33,911 INFO L451 ceAbstractionStarter]: At program point L51-3(lines 51 52) the Hoare annotation is: true [2018-11-28 18:17:33,911 INFO L448 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2018-11-28 18:17:33,912 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:17:33,912 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:17:33,912 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:17:33,912 INFO L448 ceAbstractionStarter]: For program point L14(lines 14 15) no Hoare annotation was computed. [2018-11-28 18:17:33,912 INFO L448 ceAbstractionStarter]: For program point L14-2(lines 14 15) no Hoare annotation was computed. [2018-11-28 18:17:33,912 INFO L448 ceAbstractionStarter]: For program point fabsEXIT(lines 11 17) no Hoare annotation was computed. [2018-11-28 18:17:33,912 INFO L451 ceAbstractionStarter]: At program point fabsENTRY(lines 11 17) the Hoare annotation is: true [2018-11-28 18:17:33,912 INFO L448 ceAbstractionStarter]: For program point fabsFINAL(lines 11 17) no Hoare annotation was computed. [2018-11-28 18:17:33,913 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:17:33,913 INFO L444 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (= (_ bv0 32) |~#a~0.offset|) [2018-11-28 18:17:33,913 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:17:33,913 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:17:33,913 INFO L448 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2018-11-28 18:17:33,913 INFO L448 ceAbstractionStarter]: For program point L29-2(line 29) no Hoare annotation was computed. [2018-11-28 18:17:33,913 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 18 38) no Hoare annotation was computed. [2018-11-28 18:17:33,913 INFO L448 ceAbstractionStarter]: For program point L23-2(lines 23 34) no Hoare annotation was computed. [2018-11-28 18:17:33,914 INFO L444 ceAbstractionStarter]: At program point L23-3(lines 23 34) the Hoare annotation is: (or (not (= |~#a~0.offset| (_ bv0 32))) (and (= (bvadd main_~n~0 (_ bv4294967291 32)) (_ bv0 32)) (= main_~i~0 (_ bv0 32)))) [2018-11-28 18:17:33,914 INFO L451 ceAbstractionStarter]: At program point L23-4(lines 23 34) the Hoare annotation is: true [2018-11-28 18:17:33,914 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 18 38) no Hoare annotation was computed. [2018-11-28 18:17:33,914 INFO L448 ceAbstractionStarter]: For program point L32(line 32) no Hoare annotation was computed. [2018-11-28 18:17:33,914 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 18 38) the Hoare annotation is: true [2018-11-28 18:17:33,914 INFO L448 ceAbstractionStarter]: For program point L26-2(lines 26 31) no Hoare annotation was computed. [2018-11-28 18:17:33,914 INFO L444 ceAbstractionStarter]: At program point L26-3(lines 26 31) the Hoare annotation is: (or (not (= |~#a~0.offset| (_ bv0 32))) (and (= main_~j~0 (_ bv0 32)) (= (bvadd main_~n~0 (_ bv4294967291 32)) (_ bv0 32)) (= main_~i~0 (_ bv0 32)))) [2018-11-28 18:17:33,914 INFO L444 ceAbstractionStarter]: At program point L26-4(lines 26 31) the Hoare annotation is: (not (= |~#a~0.offset| (_ bv0 32))) [2018-11-28 18:17:33,915 INFO L448 ceAbstractionStarter]: For program point L35(line 35) no Hoare annotation was computed. [2018-11-28 18:17:33,915 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-28 18:17:33,915 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-28 18:17:33,915 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-28 18:17:33,915 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-28 18:17:33,915 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-28 18:17:33,915 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-28 18:17:33,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:17:33 BoogieIcfgContainer [2018-11-28 18:17:33,930 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:17:33,930 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:17:33,930 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:17:33,931 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:17:33,931 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:17:21" (3/4) ... [2018-11-28 18:17:33,935 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 18:17:33,943 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ludcmp [2018-11-28 18:17:33,943 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 18:17:33,943 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fabs [2018-11-28 18:17:33,944 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 18:17:33,944 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-28 18:17:33,953 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 34 nodes and edges [2018-11-28 18:17:33,953 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2018-11-28 18:17:33,954 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-28 18:17:33,954 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 18:17:34,048 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:17:34,052 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:17:34,053 INFO L168 Benchmark]: Toolchain (without parser) took 29697.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 951.3 MB in the beginning and 879.6 MB in the end (delta: 71.7 MB). Peak memory consumption was 202.8 MB. Max. memory is 11.5 GB. [2018-11-28 18:17:34,055 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:17:34,057 INFO L168 Benchmark]: CACSL2BoogieTranslator took 725.74 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 908.4 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. [2018-11-28 18:17:34,060 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 908.4 MB in the beginning and 1.1 GB in the end (delta: -211.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2018-11-28 18:17:34,060 INFO L168 Benchmark]: Boogie Preprocessor took 83.32 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:17:34,060 INFO L168 Benchmark]: RCFGBuilder took 15863.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. [2018-11-28 18:17:34,061 INFO L168 Benchmark]: TraceAbstraction took 12802.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 886.2 MB in the end (delta: 193.7 MB). Peak memory consumption was 193.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:17:34,062 INFO L168 Benchmark]: Witness Printer took 122.02 ms. Allocated memory is still 1.2 GB. Free memory was 886.2 MB in the beginning and 879.6 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2018-11-28 18:17:34,066 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 725.74 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 908.4 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 95.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 908.4 MB in the beginning and 1.1 GB in the end (delta: -211.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 83.32 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 15863.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 12802.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 886.2 MB in the end (delta: 193.7 MB). Peak memory consumption was 193.7 MB. Max. memory is 11.5 GB. * Witness Printer took 122.02 ms. Allocated memory is still 1.2 GB. Free memory was 886.2 MB in the beginning and 879.6 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: !(a == 0bv32) || ((j == 0bv32 && ~bvadd64(n, 4294967291bv32) == 0bv32) && i == 0bv32) - InvariantResult [Line: 75]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: !(a == 0bv32) || (~bvadd64(n, 4294967291bv32) == 0bv32 && i == 0bv32) - InvariantResult [Line: 72]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. SAFE Result, 12.7s OverallTime, 6 OverallIterations, 6 TraceHistogramMax, 8.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 145 SDtfs, 151 SDslu, 181 SDs, 0 SdLazy, 239 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 161 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 38 PreInvPairs, 51 NumberOfFragments, 55 HoareAnnotationTreeSize, 38 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 21 FomulaSimplificationsInter, 13 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 156 ConstructedInterpolants, 1 QuantifiedInterpolants, 13490 SizeOfPredicates, 13 NumberOfNonLiveVariables, 465 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 67/125 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...