./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float3.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/float3.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 214842803e5bf2009b57aa1e3a0f5face6e1dd52 .................................................................................................................................................................................................................................................. 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/float3.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 214842803e5bf2009b57aa1e3a0f5face6e1dd52 .................................................................................................................................................................................................................................................................................................................................. 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 17:21:16,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:21:16,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:21:16,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:21:16,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:21:16,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:21:16,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:21:16,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:21:16,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:21:16,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:21:16,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:21:16,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:21:16,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:21:16,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:21:16,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:21:16,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:21:16,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:21:17,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:21:17,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:21:17,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:21:17,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:21:17,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:21:17,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:21:17,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:21:17,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:21:17,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:21:17,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:21:17,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:21:17,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:21:17,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:21:17,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:21:17,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:21:17,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:21:17,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:21:17,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:21:17,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:21:17,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:21:17,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:21:17,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:21:17,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:21:17,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:21:17,037 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:21:17,071 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:21:17,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:21:17,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:21:17,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:21:17,080 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:21:17,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:21:17,081 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:21:17,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:21:17,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:21:17,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:21:17,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:21:17,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:21:17,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:21:17,084 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:21:17,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:21:17,084 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:21:17,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:21:17,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:21:17,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:21:17,085 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:21:17,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:21:17,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:21:17,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:21:17,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:21:17,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:21:17,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:21:17,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:21:17,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:21:17,089 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:21:17,089 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 -> 214842803e5bf2009b57aa1e3a0f5face6e1dd52 [2020-07-28 17:21:17,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:21:17,412 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:21:17,416 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:21:17,418 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:21:17,419 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:21:17,420 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float3.c [2020-07-28 17:21:17,478 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bf65bb33/4afdb76a578543e98b626bb5f30dc761/FLAG18feb0106 [2020-07-28 17:21:17,886 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:21:17,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float3.c [2020-07-28 17:21:17,894 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bf65bb33/4afdb76a578543e98b626bb5f30dc761/FLAG18feb0106 [2020-07-28 17:21:18,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bf65bb33/4afdb76a578543e98b626bb5f30dc761 [2020-07-28 17:21:18,319 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:21:18,321 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:21:18,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:21:18,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:21:18,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:21:18,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:21:18" (1/1) ... [2020-07-28 17:21:18,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26e670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:18, skipping insertion in model container [2020-07-28 17:21:18,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:21:18" (1/1) ... [2020-07-28 17:21:18,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:21:18,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:21:18,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:21:18,551 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:21:18,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:21:18,593 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:21:18,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:18 WrapperNode [2020-07-28 17:21:18,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:21:18,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:21:18,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:21:18,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:21:18,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:18" (1/1) ... [2020-07-28 17:21:18,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:18" (1/1) ... [2020-07-28 17:21:18,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:21:18,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:21:18,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:21:18,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:21:18,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:18" (1/1) ... [2020-07-28 17:21:18,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:18" (1/1) ... [2020-07-28 17:21:18,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:18" (1/1) ... [2020-07-28 17:21:18,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:18" (1/1) ... [2020-07-28 17:21:18,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:18" (1/1) ... [2020-07-28 17:21:18,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:18" (1/1) ... [2020-07-28 17:21:18,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:18" (1/1) ... [2020-07-28 17:21:18,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:21:18,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:21:18,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:21:18,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:21:18,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:18" (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 17:21:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:21:18,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:21:19,009 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:21:19,010 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-28 17:21:19,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:21:19 BoogieIcfgContainer [2020-07-28 17:21:19,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:21:19,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:21:19,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:21:19,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:21:19,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:21:18" (1/3) ... [2020-07-28 17:21:19,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac9638d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:21:19, skipping insertion in model container [2020-07-28 17:21:19,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:18" (2/3) ... [2020-07-28 17:21:19,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac9638d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:21:19, skipping insertion in model container [2020-07-28 17:21:19,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:21:19" (3/3) ... [2020-07-28 17:21:19,023 INFO L109 eAbstractionObserver]: Analyzing ICFG float3.c [2020-07-28 17:21:19,032 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:21:19,038 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:21:19,052 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:21:19,077 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:21:19,078 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:21:19,078 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:21:19,078 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:21:19,078 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:21:19,079 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:21:19,079 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:21:19,079 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:21:19,094 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-07-28 17:21:19,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-28 17:21:19,100 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:21:19,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:21:19,102 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:21:19,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:21:19,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965381, now seen corresponding path program 1 times [2020-07-28 17:21:19,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:21:19,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112194540] [2020-07-28 17:21:19,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:21:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:21:19,196 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:21:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:21:19,204 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:21:19,224 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 17:21:19,225 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 17:21:19,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:21:19,253 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:21:19,254 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:21:19,254 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2020-07-28 17:21:19,254 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2020-07-28 17:21:19,254 WARN L170 areAnnotationChecker]: L15-2 has no Hoare annotation [2020-07-28 17:21:19,254 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2020-07-28 17:21:19,255 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-28 17:21:19,255 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-28 17:21:19,255 WARN L170 areAnnotationChecker]: L24-1 has no Hoare annotation [2020-07-28 17:21:19,256 WARN L170 areAnnotationChecker]: L24-1 has no Hoare annotation [2020-07-28 17:21:19,256 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 17:21:19,256 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:21:19,256 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 17:21:19,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:21:19 BoogieIcfgContainer [2020-07-28 17:21:19,260 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:21:19,260 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:21:19,261 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:21:19,261 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:21:19,262 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:21:19" (3/4) ... [2020-07-28 17:21:19,266 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-07-28 17:21:19,267 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:21:19,270 INFO L168 Benchmark]: Toolchain (without parser) took 948.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.8 MB). Free memory was 956.2 MB in the beginning and 1.1 GB in the end (delta: -175.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:21:19,271 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:21:19,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.19 ms. Allocated memory is still 1.0 GB. Free memory was 956.2 MB in the beginning and 945.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:21:19,274 INFO L168 Benchmark]: Boogie Procedure Inliner took 139.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.8 MB). Free memory was 945.5 MB in the beginning and 1.2 GB in the end (delta: -218.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:21:19,274 INFO L168 Benchmark]: Boogie Preprocessor took 25.87 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:21:19,275 INFO L168 Benchmark]: RCFGBuilder took 251.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2020-07-28 17:21:19,276 INFO L168 Benchmark]: TraceAbstraction took 244.44 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2020-07-28 17:21:19,277 INFO L168 Benchmark]: Witness Printer took 6.46 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 17:21:19,281 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 0.58 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 272.19 ms. Allocated memory is still 1.0 GB. Free memory was 956.2 MB in the beginning and 945.5 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 139.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.8 MB). Free memory was 945.5 MB in the beginning and 1.2 GB in the end (delta: -218.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.87 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 251.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 244.44 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * Witness Printer took 6.46 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: - UnprovableResult [Line: 24]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 24, overapproximation of someBinaryArithmeticDOUBLEoperation at line 20. Possible FailurePath: [L4] double d = 0.0; VAL [d=0] [L13] int x = 2; [L15] COND TRUE __VERIFIER_nondet_int() [L16] x = 4 VAL [d=0] [L8] d = 1.0 VAL [d=1] [L20] d += (x == 2) [L22] d += (x > 3) [L24] COND TRUE !(d == 2.0) [L24] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 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, 7 NumberOfCodeBlocks, 7 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 17:21:21,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:21:21,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:21:21,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:21:21,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:21:21,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:21:21,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:21:21,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:21:21,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:21:21,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:21:21,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:21:21,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:21:21,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:21:21,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:21:21,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:21:21,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:21:21,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:21:21,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:21:21,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:21:21,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:21:21,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:21:21,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:21:21,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:21:21,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:21:21,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:21:21,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:21:21,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:21:21,327 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:21:21,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:21:21,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:21:21,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:21:21,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:21:21,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:21:21,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:21:21,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:21:21,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:21:21,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:21:21,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:21:21,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:21:21,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:21:21,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:21:21,337 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-07-28 17:21:21,353 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:21:21,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:21:21,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:21:21,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:21:21,355 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:21:21,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:21:21,356 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:21:21,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:21:21,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:21:21,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:21:21,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:21:21,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:21:21,358 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-07-28 17:21:21,358 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-07-28 17:21:21,358 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:21:21,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:21:21,359 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:21:21,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:21:21,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:21:21,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:21:21,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:21:21,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:21:21,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:21:21,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:21:21,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:21:21,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:21:21,362 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-07-28 17:21:21,362 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-07-28 17:21:21,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:21:21,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:21:21,363 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-28 17:21:21,363 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 -> 214842803e5bf2009b57aa1e3a0f5face6e1dd52 [2020-07-28 17:21:21,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:21:21,696 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:21:21,700 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:21:21,702 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:21:21,703 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:21:21,704 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float3.c [2020-07-28 17:21:21,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce033845f/5d861157a2f040209e2d68aea2ea3072/FLAG5fa3f32de [2020-07-28 17:21:22,263 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:21:22,264 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float3.c [2020-07-28 17:21:22,274 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce033845f/5d861157a2f040209e2d68aea2ea3072/FLAG5fa3f32de [2020-07-28 17:21:22,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce033845f/5d861157a2f040209e2d68aea2ea3072 [2020-07-28 17:21:22,642 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:21:22,645 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:21:22,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:21:22,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:21:22,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:21:22,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:21:22" (1/1) ... [2020-07-28 17:21:22,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d4b6d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:22, skipping insertion in model container [2020-07-28 17:21:22,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:21:22" (1/1) ... [2020-07-28 17:21:22,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:21:22,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:21:22,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:21:22,884 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:21:22,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:21:22,920 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:21:22,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:22 WrapperNode [2020-07-28 17:21:22,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:21:22,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:21:22,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:21:22,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:21:22,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:22" (1/1) ... [2020-07-28 17:21:22,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:22" (1/1) ... [2020-07-28 17:21:23,018 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:21:23,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:21:23,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:21:23,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:21:23,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:22" (1/1) ... [2020-07-28 17:21:23,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:22" (1/1) ... [2020-07-28 17:21:23,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:22" (1/1) ... [2020-07-28 17:21:23,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:22" (1/1) ... [2020-07-28 17:21:23,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:22" (1/1) ... [2020-07-28 17:21:23,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:22" (1/1) ... [2020-07-28 17:21:23,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:22" (1/1) ... [2020-07-28 17:21:23,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:21:23,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:21:23,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:21:23,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:21:23,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:22" (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 17:21:23,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:21:23,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:21:23,606 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:21:23,607 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-28 17:21:23,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:21:23 BoogieIcfgContainer [2020-07-28 17:21:23,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:21:23,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:21:23,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:21:23,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:21:23,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:21:22" (1/3) ... [2020-07-28 17:21:23,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361fd55e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:21:23, skipping insertion in model container [2020-07-28 17:21:23,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:21:22" (2/3) ... [2020-07-28 17:21:23,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361fd55e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:21:23, skipping insertion in model container [2020-07-28 17:21:23,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:21:23" (3/3) ... [2020-07-28 17:21:23,625 INFO L109 eAbstractionObserver]: Analyzing ICFG float3.c [2020-07-28 17:21:23,634 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:21:23,640 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:21:23,652 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:21:23,675 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:21:23,676 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:21:23,676 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:21:23,676 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:21:23,676 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:21:23,676 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:21:23,677 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:21:23,677 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:21:23,693 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-07-28 17:21:23,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-28 17:21:23,699 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:21:23,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:21:23,701 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:21:23,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:21:23,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965381, now seen corresponding path program 1 times [2020-07-28 17:21:23,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:21:23,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964929057] [2020-07-28 17:21:23,722 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 17:21:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:21:23,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-28 17:21:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:21:23,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:21:24,189 INFO L280 TraceCheckUtils]: 0: Hoare triple {14#true} currentRoundingMode := ~roundNearestTiesToEven;~d~0 := ~Pluszero~DOUBLE(); {19#(= currentRoundingMode roundNearestTiesToEven)} is VALID [2020-07-28 17:21:24,190 INFO L280 TraceCheckUtils]: 1: Hoare triple {19#(= currentRoundingMode roundNearestTiesToEven)} havoc main_#res;havoc main_#t~nondet0, main_~x~0;main_~x~0 := 2bv32; {19#(= currentRoundingMode roundNearestTiesToEven)} is VALID [2020-07-28 17:21:24,195 INFO L280 TraceCheckUtils]: 2: Hoare triple {19#(= currentRoundingMode roundNearestTiesToEven)} assume 0bv32 != main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := 4bv32; {26#(and (= currentRoundingMode roundNearestTiesToEven) (= (_ bv4 32) ULTIMATE.start_main_~x~0))} is VALID [2020-07-28 17:21:24,201 INFO L280 TraceCheckUtils]: 3: Hoare triple {26#(and (= currentRoundingMode roundNearestTiesToEven) (= (_ bv4 32) ULTIMATE.start_main_~x~0))} ~d~0 := ~to_fp~DOUBLE(currentRoundingMode, 1.0); {30#(and (= ~d~0 ((_ to_fp 11 53) currentRoundingMode 1.0)) (= currentRoundingMode roundNearestTiesToEven) (= (_ bv4 32) ULTIMATE.start_main_~x~0))} is VALID [2020-07-28 17:21:24,204 INFO L280 TraceCheckUtils]: 4: Hoare triple {30#(and (= ~d~0 ((_ to_fp 11 53) currentRoundingMode 1.0)) (= currentRoundingMode roundNearestTiesToEven) (= (_ bv4 32) ULTIMATE.start_main_~x~0))} ~d~0 := ~fp.add~DOUBLE(currentRoundingMode, ~d~0, ~convertINTToDOUBLE(currentRoundingMode, (if 2bv32 == main_~x~0 then 1bv32 else 0bv32)));~d~0 := ~fp.add~DOUBLE(currentRoundingMode, ~d~0, ~convertINTToDOUBLE(currentRoundingMode, (if ~bvsgt32(main_~x~0, 3bv32) then 1bv32 else 0bv32))); {34#(and (= currentRoundingMode roundNearestTiesToEven) (= ~d~0 (fp.add currentRoundingMode (fp.add currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0) ((_ to_fp 11 53) currentRoundingMode (_ bv0 32))) ((_ to_fp 11 53) currentRoundingMode (_ bv1 32)))))} is VALID [2020-07-28 17:21:24,206 INFO L280 TraceCheckUtils]: 5: Hoare triple {34#(and (= currentRoundingMode roundNearestTiesToEven) (= ~d~0 (fp.add currentRoundingMode (fp.add currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0) ((_ to_fp 11 53) currentRoundingMode (_ bv0 32))) ((_ to_fp 11 53) currentRoundingMode (_ bv1 32)))))} assume !~fp.eq~DOUBLE(~d~0, ~to_fp~DOUBLE(currentRoundingMode, 2.0)); {15#false} is VALID [2020-07-28 17:21:24,206 INFO L280 TraceCheckUtils]: 6: Hoare triple {15#false} assume !false; {15#false} is VALID [2020-07-28 17:21:24,210 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 17:21:24,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:21:43,828 WARN L193 SmtUtils]: Spent 14.92 s on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2020-07-28 17:21:44,535 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 6 [2020-07-28 17:21:44,547 INFO L280 TraceCheckUtils]: 6: Hoare triple {15#false} assume !false; {15#false} is VALID [2020-07-28 17:21:44,548 INFO L280 TraceCheckUtils]: 5: Hoare triple {44#(fp.eq ~d~0 ((_ to_fp 11 53) currentRoundingMode 2.0))} assume !~fp.eq~DOUBLE(~d~0, ~to_fp~DOUBLE(currentRoundingMode, 2.0)); {15#false} is VALID [2020-07-28 17:21:44,894 INFO L280 TraceCheckUtils]: 4: Hoare triple {48#(or (and (fp.eq (fp.add currentRoundingMode (fp.add currentRoundingMode ~d~0 ((_ to_fp 11 53) currentRoundingMode (_ bv1 32))) ((_ to_fp 11 53) currentRoundingMode (_ bv0 32))) ((_ to_fp 11 53) currentRoundingMode 2.0)) (= (_ bv2 32) ULTIMATE.start_main_~x~0)) (and (not (= (_ bv2 32) ULTIMATE.start_main_~x~0)) (or (and (fp.eq (fp.add currentRoundingMode (fp.add currentRoundingMode ~d~0 ((_ to_fp 11 53) currentRoundingMode (_ bv0 32))) ((_ to_fp 11 53) currentRoundingMode (_ bv0 32))) ((_ to_fp 11 53) currentRoundingMode 2.0)) (not (bvsgt ULTIMATE.start_main_~x~0 (_ bv3 32)))) (and (fp.eq (fp.add currentRoundingMode (fp.add currentRoundingMode ~d~0 ((_ to_fp 11 53) currentRoundingMode (_ bv0 32))) ((_ to_fp 11 53) currentRoundingMode (_ bv1 32))) ((_ to_fp 11 53) currentRoundingMode 2.0)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv3 32))))))} ~d~0 := ~fp.add~DOUBLE(currentRoundingMode, ~d~0, ~convertINTToDOUBLE(currentRoundingMode, (if 2bv32 == main_~x~0 then 1bv32 else 0bv32)));~d~0 := ~fp.add~DOUBLE(currentRoundingMode, ~d~0, ~convertINTToDOUBLE(currentRoundingMode, (if ~bvsgt32(main_~x~0, 3bv32) then 1bv32 else 0bv32))); {44#(fp.eq ~d~0 ((_ to_fp 11 53) currentRoundingMode 2.0))} is VALID [2020-07-28 17:21:44,982 INFO L280 TraceCheckUtils]: 3: Hoare triple {52#(or (bvsgt ULTIMATE.start_main_~x~0 (_ bv3 32)) (= (_ bv2 32) ULTIMATE.start_main_~x~0))} ~d~0 := ~to_fp~DOUBLE(currentRoundingMode, 1.0); {48#(or (and (fp.eq (fp.add currentRoundingMode (fp.add currentRoundingMode ~d~0 ((_ to_fp 11 53) currentRoundingMode (_ bv1 32))) ((_ to_fp 11 53) currentRoundingMode (_ bv0 32))) ((_ to_fp 11 53) currentRoundingMode 2.0)) (= (_ bv2 32) ULTIMATE.start_main_~x~0)) (and (not (= (_ bv2 32) ULTIMATE.start_main_~x~0)) (or (and (fp.eq (fp.add currentRoundingMode (fp.add currentRoundingMode ~d~0 ((_ to_fp 11 53) currentRoundingMode (_ bv0 32))) ((_ to_fp 11 53) currentRoundingMode (_ bv0 32))) ((_ to_fp 11 53) currentRoundingMode 2.0)) (not (bvsgt ULTIMATE.start_main_~x~0 (_ bv3 32)))) (and (fp.eq (fp.add currentRoundingMode (fp.add currentRoundingMode ~d~0 ((_ to_fp 11 53) currentRoundingMode (_ bv0 32))) ((_ to_fp 11 53) currentRoundingMode (_ bv1 32))) ((_ to_fp 11 53) currentRoundingMode 2.0)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv3 32))))))} is VALID [2020-07-28 17:21:44,986 INFO L280 TraceCheckUtils]: 2: Hoare triple {14#true} assume 0bv32 != main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := 4bv32; {52#(or (bvsgt ULTIMATE.start_main_~x~0 (_ bv3 32)) (= (_ bv2 32) ULTIMATE.start_main_~x~0))} is VALID [2020-07-28 17:21:44,987 INFO L280 TraceCheckUtils]: 1: Hoare triple {14#true} havoc main_#res;havoc main_#t~nondet0, main_~x~0;main_~x~0 := 2bv32; {14#true} is VALID [2020-07-28 17:21:44,987 INFO L280 TraceCheckUtils]: 0: Hoare triple {14#true} currentRoundingMode := ~roundNearestTiesToEven;~d~0 := ~Pluszero~DOUBLE(); {14#true} is VALID [2020-07-28 17:21:44,988 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 17:21:44,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964929057] [2020-07-28 17:21:44,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:21:44,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-07-28 17:21:44,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524163192] [2020-07-28 17:21:44,999 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 7 [2020-07-28 17:21:45,002 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:21:45,006 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states. [2020-07-28 17:21:46,083 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:21:46,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-28 17:21:46,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:21:46,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-28 17:21:46,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-28 17:21:46,094 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 9 states. [2020-07-28 17:21:54,496 WARN L193 SmtUtils]: Spent 4.83 s on a formula simplification. DAG size of input: 33 DAG size of output: 20 [2020-07-28 17:22:01,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:22:01,630 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-07-28 17:22:01,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-28 17:22:01,630 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 7 [2020-07-28 17:22:01,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:22:01,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-28 17:22:01,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 20 transitions. [2020-07-28 17:22:01,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-28 17:22:01,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 20 transitions. [2020-07-28 17:22:01,653 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states and 20 transitions. [2020-07-28 17:22:03,853 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:22:03,860 INFO L225 Difference]: With dead ends: 20 [2020-07-28 17:22:03,860 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 17:22:03,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-07-28 17:22:03,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 17:22:03,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 17:22:03,884 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:22:03,885 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 17:22:03,885 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:22:03,886 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:22:03,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:22:03,887 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:22:03,887 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:22:03,887 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:22:03,888 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:22:03,888 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:22:03,888 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:22:03,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:22:03,889 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:22:03,889 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:22:03,890 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:22:03,890 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:22:03,890 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:22:03,891 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:22:03,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 17:22:03,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 17:22:03,893 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-07-28 17:22:03,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:22:03,894 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 17:22:03,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-28 17:22:03,894 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:22:03,895 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:22:04,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-07-28 17:22:04,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 17:22:04,117 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 17:22:04,118 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-07-28 17:22:04,119 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 17:22:04,121 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 17:22:04,121 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-07-28 17:22:04,121 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 24) no Hoare annotation was computed. [2020-07-28 17:22:04,122 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-07-28 17:22:04,122 INFO L268 CegarLoopResult]: For program point L15(lines 15 16) no Hoare annotation was computed. [2020-07-28 17:22:04,122 INFO L268 CegarLoopResult]: For program point L15-2(lines 15 16) no Hoare annotation was computed. [2020-07-28 17:22:04,122 INFO L268 CegarLoopResult]: For program point L11(lines 11 25) no Hoare annotation was computed. [2020-07-28 17:22:04,123 INFO L268 CegarLoopResult]: For program point L6(lines 6 9) no Hoare annotation was computed. [2020-07-28 17:22:04,127 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:22:04,127 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:22:04,127 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2020-07-28 17:22:04,127 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2020-07-28 17:22:04,127 WARN L170 areAnnotationChecker]: L15-2 has no Hoare annotation [2020-07-28 17:22:04,127 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2020-07-28 17:22:04,128 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-28 17:22:04,128 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-28 17:22:04,128 WARN L170 areAnnotationChecker]: L24-1 has no Hoare annotation [2020-07-28 17:22:04,128 WARN L170 areAnnotationChecker]: L24-1 has no Hoare annotation [2020-07-28 17:22:04,128 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 17:22:04,128 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:22:04,129 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 17:22:04,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:22:04 BoogieIcfgContainer [2020-07-28 17:22:04,131 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:22:04,132 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:22:04,132 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:22:04,132 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:22:04,133 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:21:23" (3/4) ... [2020-07-28 17:22:04,137 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 17:22:04,149 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-07-28 17:22:04,150 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-07-28 17:22:04,192 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:22:04,193 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:22:04,195 INFO L168 Benchmark]: Toolchain (without parser) took 41551.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 954.8 MB in the beginning and 1.0 GB in the end (delta: -49.5 MB). Peak memory consumption was 82.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:22:04,196 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:22:04,197 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.68 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 942.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:22:04,198 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 942.7 MB in the beginning and 1.1 GB in the end (delta: -185.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2020-07-28 17:22:04,198 INFO L168 Benchmark]: Boogie Preprocessor took 26.99 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:22:04,199 INFO L168 Benchmark]: RCFGBuilder took 570.12 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: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:22:04,200 INFO L168 Benchmark]: TraceAbstraction took 40514.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 93.0 MB). Peak memory consumption was 93.0 MB. Max. memory is 11.5 GB. [2020-07-28 17:22:04,201 INFO L168 Benchmark]: Witness Printer took 60.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:22:04,205 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 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 274.68 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 942.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 97.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 942.7 MB in the beginning and 1.1 GB in the end (delta: -185.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.99 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 570.12 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: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 40514.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 93.0 MB). Peak memory consumption was 93.0 MB. Max. memory is 11.5 GB. * Witness Printer took 60.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB 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: 24]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 40.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 17.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 23 SDslu, 13 SDs, 0 SdLazy, 16 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 27.4s Time, 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: 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, 0.2s SatisfiabilityAnalysisTime, 21.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 750 SizeOfPredicates, 3 NumberOfNonLiveVariables, 11 ConjunctsInSsa, 5 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...