./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float1.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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 ../sv-benchmarks/c/floats-cbmc-regression/float1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f58559d137fcf7688e3324763048c6e2c7ffac4b ............................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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 ../sv-benchmarks/c/floats-cbmc-regression/float1.c -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 f58559d137fcf7688e3324763048c6e2c7ffac4b .............................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 17:20:54,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:20:54,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:20:54,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:20:54,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:20:54,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:20:54,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:20:54,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:20:54,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:20:54,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:20:54,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:20:54,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:20:54,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:20:54,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:20:54,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:20:54,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:20:54,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:20:54,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:20:54,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:20:54,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:20:54,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:20:54,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:20:54,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:20:54,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:20:54,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:20:54,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:20:54,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:20:54,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:20:54,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:20:54,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:20:54,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:20:54,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:20:54,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:20:54,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:20:54,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:20:54,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:20:54,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:20:54,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:20:54,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:20:54,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:20:54,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:20:54,953 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:20:54,975 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:20:54,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:20:54,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:20:54,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:20:54,978 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:20:54,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:20:54,978 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:20:54,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:20:54,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:20:54,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:20:54,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:20:54,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:20:54,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:20:54,981 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:20:54,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:20:54,981 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:20:54,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:20:54,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:20:54,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:20:54,982 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:20:54,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:20:54,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:20:54,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:20:54,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:20:54,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:20:54,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:20:54,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:20:54,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:20:54,985 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:20:54,985 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> f58559d137fcf7688e3324763048c6e2c7ffac4b [2020-07-28 17:20:55,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:20:55,377 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:20:55,381 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:20:55,383 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:20:55,384 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:20:55,385 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float1.c [2020-07-28 17:20:55,452 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e898ee3fa/0aa77cf8cfed403186e58beaaa0f6289/FLAGa6191397e [2020-07-28 17:20:55,854 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:20:55,854 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float1.c [2020-07-28 17:20:55,860 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e898ee3fa/0aa77cf8cfed403186e58beaaa0f6289/FLAGa6191397e [2020-07-28 17:20:56,239 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e898ee3fa/0aa77cf8cfed403186e58beaaa0f6289 [2020-07-28 17:20:56,242 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:20:56,245 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:20:56,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:20:56,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:20:56,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:20:56,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:20:56" (1/1) ... [2020-07-28 17:20:56,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c38f279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:56, skipping insertion in model container [2020-07-28 17:20:56,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:20:56" (1/1) ... [2020-07-28 17:20:56,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:20:56,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:20:56,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:20:56,495 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:20:56,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:20:56,526 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:20:56,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:56 WrapperNode [2020-07-28 17:20:56,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:20:56,528 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:20:56,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:20:56,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:20:56,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:56" (1/1) ... [2020-07-28 17:20:56,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:56" (1/1) ... [2020-07-28 17:20:56,612 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:20:56,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:20:56,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:20:56,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:20:56,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:56" (1/1) ... [2020-07-28 17:20:56,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:56" (1/1) ... [2020-07-28 17:20:56,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:56" (1/1) ... [2020-07-28 17:20:56,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:56" (1/1) ... [2020-07-28 17:20:56,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:56" (1/1) ... [2020-07-28 17:20:56,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:56" (1/1) ... [2020-07-28 17:20:56,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:56" (1/1) ... [2020-07-28 17:20:56,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:20:56,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:20:56,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:20:56,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:20:56,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:56" (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 [2020-07-28 17:20:56,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:20:56,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:20:56,954 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:20:56,955 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-28 17:20:56,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:20:56 BoogieIcfgContainer [2020-07-28 17:20:56,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:20:56,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:20:56,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:20:56,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:20:56,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:20:56" (1/3) ... [2020-07-28 17:20:56,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c2367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:20:56, skipping insertion in model container [2020-07-28 17:20:56,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:56" (2/3) ... [2020-07-28 17:20:56,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c2367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:20:56, skipping insertion in model container [2020-07-28 17:20:56,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:20:56" (3/3) ... [2020-07-28 17:20:56,979 INFO L109 eAbstractionObserver]: Analyzing ICFG float1.c [2020-07-28 17:20:57,000 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:20:57,009 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-07-28 17:20:57,022 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-07-28 17:20:57,044 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:20:57,044 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:20:57,045 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:20:57,045 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:20:57,045 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:20:57,045 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:20:57,045 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:20:57,045 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:20:57,059 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-07-28 17:20:57,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-07-28 17:20:57,064 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:20:57,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-07-28 17:20:57,065 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:20:57,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:20:57,070 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2020-07-28 17:20:57,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:20:57,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073871787] [2020-07-28 17:20:57,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:20:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:20:57,146 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:20:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:20:57,149 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:20:57,167 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 17:20:57,168 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 17:20:57,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:20:57,187 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:20:57,188 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-28 17:20:57,188 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-28 17:20:57,188 WARN L170 areAnnotationChecker]: L10-1 has no Hoare annotation [2020-07-28 17:20:57,188 WARN L170 areAnnotationChecker]: L10-1 has no Hoare annotation [2020-07-28 17:20:57,188 WARN L170 areAnnotationChecker]: L10-3 has no Hoare annotation [2020-07-28 17:20:57,188 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-28 17:20:57,189 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-28 17:20:57,189 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-28 17:20:57,189 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-28 17:20:57,189 WARN L170 areAnnotationChecker]: L2 has no Hoare annotation [2020-07-28 17:20:57,189 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:20:57,189 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:20:57,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:20:57 BoogieIcfgContainer [2020-07-28 17:20:57,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:20:57,193 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:20:57,193 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:20:57,193 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:20:57,194 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:20:56" (3/4) ... [2020-07-28 17:20:57,198 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-07-28 17:20:57,198 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:20:57,202 INFO L168 Benchmark]: Toolchain (without parser) took 956.87 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 71.3 MB). Free memory was 960.2 MB in the beginning and 1.0 GB in the end (delta: -67.0 MB). Peak memory consumption was 4.3 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:57,203 INFO L168 Benchmark]: CDTParser took 0.95 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:20:57,204 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.21 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:57,205 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 71.3 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -117.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:57,205 INFO L168 Benchmark]: Boogie Preprocessor took 18.58 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. [2020-07-28 17:20:57,206 INFO L168 Benchmark]: RCFGBuilder took 329.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:57,207 INFO L168 Benchmark]: TraceAbstraction took 229.61 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:57,208 INFO L168 Benchmark]: Witness Printer took 5.42 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:20:57,212 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.95 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 281.21 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 84.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 71.3 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -117.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.58 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 329.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 229.61 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. * Witness Printer took 5.42 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_int at line 8, overapproximation of someBinaryArithmeticDOUBLEoperation at line 7, overapproximation of to_real at line 6. Possible FailurePath: [L3] double x; [L4] int y; [L6] x=2 [L7] x-=0.6 [L8] y=x [L10] COND TRUE !(y==1) [L10] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 17:20:59,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:20:59,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:20:59,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:20:59,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:20:59,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:20:59,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:20:59,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:20:59,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:20:59,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:20:59,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:20:59,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:20:59,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:20:59,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:20:59,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:20:59,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:20:59,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:20:59,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:20:59,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:20:59,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:20:59,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:20:59,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:20:59,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:20:59,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:20:59,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:20:59,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:20:59,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:20:59,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:20:59,292 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:20:59,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:20:59,294 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:20:59,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:20:59,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:20:59,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:20:59,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:20:59,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:20:59,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:20:59,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:20:59,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:20:59,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:20:59,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:20:59,303 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-07-28 17:20:59,322 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:20:59,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:20:59,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:20:59,324 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:20:59,325 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:20:59,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:20:59,326 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:20:59,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:20:59,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:20:59,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:20:59,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:20:59,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:20:59,327 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-07-28 17:20:59,327 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-07-28 17:20:59,327 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:20:59,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:20:59,328 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:20:59,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:20:59,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:20:59,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:20:59,329 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:20:59,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:20:59,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:20:59,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:20:59,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:20:59,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:20:59,332 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-07-28 17:20:59,332 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-07-28 17:20:59,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:20:59,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:20:59,333 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-28 17:20:59,333 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> f58559d137fcf7688e3324763048c6e2c7ffac4b [2020-07-28 17:20:59,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:20:59,643 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:20:59,646 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:20:59,648 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:20:59,649 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:20:59,650 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float1.c [2020-07-28 17:20:59,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c13720f5c/1c6b253f079147d796327a441ac7cb7b/FLAG7b1d7b54c [2020-07-28 17:21:00,168 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:21:00,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float1.c [2020-07-28 17:21:00,174 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c13720f5c/1c6b253f079147d796327a441ac7cb7b/FLAG7b1d7b54c [2020-07-28 17:21:00,537 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c13720f5c/1c6b253f079147d796327a441ac7cb7b [2020-07-28 17:21:00,540 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:21:00,543 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:21:00,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:21:00,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:21:00,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:21:00,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:21:00" (1/1) ... [2020-07-28 17:21:00,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@742bf755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:00, skipping insertion in model container [2020-07-28 17:21:00,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:21:00" (1/1) ... [2020-07-28 17:21:00,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:21:00,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:21:00,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:21:00,790 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:21:00,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:21:00,824 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:21:00,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:00 WrapperNode [2020-07-28 17:21:00,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:21:00,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:21:00,825 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:21:00,826 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:21:00,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:00" (1/1) ... [2020-07-28 17:21:00,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:00" (1/1) ... [2020-07-28 17:21:00,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:21:00,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:21:00,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:21:00,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:21:00,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:00" (1/1) ... [2020-07-28 17:21:00,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:00" (1/1) ... [2020-07-28 17:21:00,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:00" (1/1) ... [2020-07-28 17:21:00,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:00" (1/1) ... [2020-07-28 17:21:00,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:00" (1/1) ... [2020-07-28 17:21:00,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:00" (1/1) ... [2020-07-28 17:21:00,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:00" (1/1) ... [2020-07-28 17:21:00,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:21:00,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:21:00,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:21:00,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:21:00,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:00" (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 [2020-07-28 17:21:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:21:01,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:21:01,483 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:21:01,483 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-28 17:21:01,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:21:01 BoogieIcfgContainer [2020-07-28 17:21:01,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:21:01,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:21:01,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:21:01,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:21:01,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:21:00" (1/3) ... [2020-07-28 17:21:01,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727db18a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:21:01, skipping insertion in model container [2020-07-28 17:21:01,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:00" (2/3) ... [2020-07-28 17:21:01,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727db18a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:21:01, skipping insertion in model container [2020-07-28 17:21:01,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:21:01" (3/3) ... [2020-07-28 17:21:01,525 INFO L109 eAbstractionObserver]: Analyzing ICFG float1.c [2020-07-28 17:21:01,556 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:21:01,571 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-07-28 17:21:01,587 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-07-28 17:21:01,636 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:21:01,636 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:21:01,637 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:21:01,637 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:21:01,637 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:21:01,638 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:21:01,638 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:21:01,638 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:21:01,655 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-07-28 17:21:01,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-28 17:21:01,662 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:21:01,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-28 17:21:01,663 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:21:01,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:21:01,668 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-07-28 17:21:01,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:21:01,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200589942] [2020-07-28 17:21:01,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-28 17:21:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:21:01,790 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-28 17:21:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:21:01,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:21:01,898 INFO L280 TraceCheckUtils]: 0: Hoare triple {15#true} currentRoundingMode := ~roundNearestTiesToEven; {20#(= currentRoundingMode roundNearestTiesToEven)} is VALID [2020-07-28 17:21:01,900 INFO L280 TraceCheckUtils]: 1: Hoare triple {20#(= currentRoundingMode roundNearestTiesToEven)} havoc main_#res;havoc main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := ~convertINTToDOUBLE(currentRoundingMode, 2bv32);main_~x~0 := ~fp.sub~DOUBLE(currentRoundingMode, main_~x~0, ~to_fp~DOUBLE(currentRoundingMode, 0.6));main_~y~0 := ~convertDOUBLEToINT(~roundTowardZero, main_~x~0); {24#(= ((_ fp.to_sbv 32) roundTowardZero (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 5.0)))) ULTIMATE.start_main_~y~0)} is VALID [2020-07-28 17:21:01,902 INFO L280 TraceCheckUtils]: 2: Hoare triple {24#(= ((_ fp.to_sbv 32) roundTowardZero (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 5.0)))) ULTIMATE.start_main_~y~0)} assume !(1bv32 == main_~y~0); {16#false} is VALID [2020-07-28 17:21:01,903 INFO L280 TraceCheckUtils]: 3: Hoare triple {16#false} assume !false; {16#false} is VALID [2020-07-28 17:21:01,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:21:01,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:21:02,627 INFO L280 TraceCheckUtils]: 3: Hoare triple {16#false} assume !false; {16#false} is VALID [2020-07-28 17:21:02,629 INFO L280 TraceCheckUtils]: 2: Hoare triple {24#(= ((_ fp.to_sbv 32) roundTowardZero (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 5.0)))) ULTIMATE.start_main_~y~0)} assume !(1bv32 == main_~y~0); {16#false} is VALID [2020-07-28 17:21:02,784 INFO L280 TraceCheckUtils]: 1: Hoare triple {15#true} havoc main_#res;havoc main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := ~convertINTToDOUBLE(currentRoundingMode, 2bv32);main_~x~0 := ~fp.sub~DOUBLE(currentRoundingMode, main_~x~0, ~to_fp~DOUBLE(currentRoundingMode, 0.6));main_~y~0 := ~convertDOUBLEToINT(~roundTowardZero, main_~x~0); {24#(= ((_ fp.to_sbv 32) roundTowardZero (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 5.0)))) ULTIMATE.start_main_~y~0)} is VALID [2020-07-28 17:21:02,785 INFO L280 TraceCheckUtils]: 0: Hoare triple {15#true} currentRoundingMode := ~roundNearestTiesToEven; {15#true} is VALID [2020-07-28 17:21:02,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:21:02,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200589942] [2020-07-28 17:21:02,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:21:02,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-07-28 17:21:02,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533195443] [2020-07-28 17:21:02,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-07-28 17:21:02,796 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:21:02,799 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 17:21:03,048 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 6 edges. 6 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:21:03,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 17:21:03,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:21:03,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 17:21:03,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-28 17:21:03,058 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2020-07-28 17:21:03,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:21:03,556 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-07-28 17:21:03,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 17:21:03,556 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-07-28 17:21:03,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:21:03,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 17:21:03,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2020-07-28 17:21:03,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 17:21:03,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2020-07-28 17:21:03,565 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 18 transitions. [2020-07-28 17:21:03,889 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:21:03,895 INFO L225 Difference]: With dead ends: 17 [2020-07-28 17:21:03,895 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 17:21:03,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-28 17:21:03,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 17:21:03,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 17:21:03,917 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:21:03,917 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 17:21:03,918 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:21:03,918 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:21:03,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:21:03,919 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:21:03,919 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:21:03,919 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:21:03,919 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:21:03,920 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:21:03,920 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:21:03,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:21:03,920 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:21:03,920 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:21:03,921 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:21:03,921 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:21:03,921 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:21:03,921 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:21:03,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 17:21:03,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 17:21:03,923 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2020-07-28 17:21:03,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:21:03,923 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 17:21:03,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 17:21:03,924 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:21:03,924 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:21:04,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-07-28 17:21:04,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 17:21:04,147 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 17:21:04,147 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-07-28 17:21:04,148 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 17:21:04,148 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 17:21:04,148 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-07-28 17:21:04,148 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2020-07-28 17:21:04,149 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-07-28 17:21:04,149 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-07-28 17:21:04,149 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-07-28 17:21:04,149 INFO L268 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2020-07-28 17:21:04,149 INFO L268 CegarLoopResult]: For program point L10-3(line 10) no Hoare annotation was computed. [2020-07-28 17:21:04,149 INFO L268 CegarLoopResult]: For program point L2(lines 2 18) no Hoare annotation was computed. [2020-07-28 17:21:04,153 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:21:04,153 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:21:04,153 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-28 17:21:04,153 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-28 17:21:04,154 WARN L170 areAnnotationChecker]: L10-1 has no Hoare annotation [2020-07-28 17:21:04,154 WARN L170 areAnnotationChecker]: L10-1 has no Hoare annotation [2020-07-28 17:21:04,154 WARN L170 areAnnotationChecker]: L10-3 has no Hoare annotation [2020-07-28 17:21:04,154 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-28 17:21:04,154 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-28 17:21:04,154 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-28 17:21:04,154 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-28 17:21:04,155 WARN L170 areAnnotationChecker]: L2 has no Hoare annotation [2020-07-28 17:21:04,155 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:21:04,155 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:21:04,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:21:04 BoogieIcfgContainer [2020-07-28 17:21:04,158 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:21:04,158 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:21:04,158 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:21:04,158 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:21:04,159 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:21:01" (3/4) ... [2020-07-28 17:21:04,163 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 17:21:04,174 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-07-28 17:21:04,175 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-07-28 17:21:04,175 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-07-28 17:21:04,211 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:21:04,211 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:21:04,215 INFO L168 Benchmark]: Toolchain (without parser) took 3672.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 961.6 MB in the beginning and 1.1 GB in the end (delta: -93.7 MB). Peak memory consumption was 32.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:21:04,215 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:21:04,216 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.24 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 950.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:21:04,216 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.93 ms. Allocated memory is still 1.0 GB. Free memory is still 950.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:21:04,217 INFO L168 Benchmark]: Boogie Preprocessor took 85.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -164.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2020-07-28 17:21:04,218 INFO L168 Benchmark]: RCFGBuilder took 545.50 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:21:04,219 INFO L168 Benchmark]: TraceAbstraction took 2654.93 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: 46.6 MB). Peak memory consumption was 46.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:21:04,219 INFO L168 Benchmark]: Witness Printer took 53.24 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. [2020-07-28 17:21:04,223 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 280.24 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 950.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.93 ms. Allocated memory is still 1.0 GB. Free memory is still 950.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 85.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -164.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 545.50 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2654.93 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: 46.6 MB). Peak memory consumption was 46.6 MB. Max. memory is 11.5 GB. * Witness Printer took 53.24 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 10]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 SDtfs, 9 SDslu, 1 SDs, 0 SdLazy, 4 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 90 SizeOfPredicates, 3 NumberOfNonLiveVariables, 7 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...