./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/inv_square-2.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/float-benchs/inv_square-2.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 5add81aa0ad059403a21002f7cdd2d19c0a9a94e ..................................................................................................................................................................................................................................................................................................................... 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/float-benchs/inv_square-2.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 5add81aa0ad059403a21002f7cdd2d19c0a9a94e ............................................................................................................................................................................................................................................................................................................................................................................................................................. 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 17:26:23,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:26:23,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:26:23,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:26:23,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:26:23,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:26:23,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:26:23,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:26:23,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:26:23,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:26:23,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:26:23,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:26:23,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:26:23,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:26:23,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:26:23,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:26:23,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:26:23,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:26:23,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:26:23,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:26:23,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:26:23,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:26:23,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:26:23,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:26:23,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:26:23,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:26:23,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:26:23,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:26:23,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:26:23,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:26:23,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:26:23,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:26:23,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:26:23,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:26:23,985 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:26:23,985 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:26:23,986 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:26:23,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:26:23,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:26:23,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:26:23,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:26:23,990 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:26:24,006 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:26:24,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:26:24,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:26:24,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:26:24,008 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:26:24,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:26:24,009 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:26:24,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:26:24,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:26:24,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:26:24,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:26:24,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:26:24,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:26:24,011 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:26:24,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:26:24,012 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:26:24,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:26:24,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:26:24,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:26:24,013 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:26:24,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:26:24,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:26:24,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:26:24,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:26:24,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:26:24,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:26:24,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:26:24,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:26:24,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:26:24,016 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 -> 5add81aa0ad059403a21002f7cdd2d19c0a9a94e [2020-07-28 17:26:24,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:26:24,366 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:26:24,370 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:26:24,372 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:26:24,372 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:26:24,373 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_square-2.c [2020-07-28 17:26:24,438 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae6be37d1/6395b472bcae437b88d11a28761cb306/FLAG77c9e9077 [2020-07-28 17:26:24,911 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:26:24,912 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square-2.c [2020-07-28 17:26:24,920 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae6be37d1/6395b472bcae437b88d11a28761cb306/FLAG77c9e9077 [2020-07-28 17:26:25,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae6be37d1/6395b472bcae437b88d11a28761cb306 [2020-07-28 17:26:25,306 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:26:25,310 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:26:25,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:26:25,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:26:25,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:26:25,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:26:25" (1/1) ... [2020-07-28 17:26:25,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61f5f43c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:25, skipping insertion in model container [2020-07-28 17:26:25,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:26:25" (1/1) ... [2020-07-28 17:26:25,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:26:25,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:26:25,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:26:25,535 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:26:25,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:26:25,568 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:26:25,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:25 WrapperNode [2020-07-28 17:26:25,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:26:25,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:26:25,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:26:25,570 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:26:25,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:25" (1/1) ... [2020-07-28 17:26:25,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:25" (1/1) ... [2020-07-28 17:26:25,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:26:25,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:26:25,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:26:25,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:26:25,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:25" (1/1) ... [2020-07-28 17:26:25,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:25" (1/1) ... [2020-07-28 17:26:25,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:25" (1/1) ... [2020-07-28 17:26:25,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:25" (1/1) ... [2020-07-28 17:26:25,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:25" (1/1) ... [2020-07-28 17:26:25,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:25" (1/1) ... [2020-07-28 17:26:25,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:25" (1/1) ... [2020-07-28 17:26:25,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:26:25,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:26:25,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:26:25,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:26:25,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:25" (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 17:26:25,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:26:25,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:26:25,935 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:26:25,935 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-07-28 17:26:25,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:26:25 BoogieIcfgContainer [2020-07-28 17:26:25,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:26:25,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:26:25,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:26:25,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:26:25,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:26:25" (1/3) ... [2020-07-28 17:26:25,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10556ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:26:25, skipping insertion in model container [2020-07-28 17:26:25,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:25" (2/3) ... [2020-07-28 17:26:25,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10556ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:26:25, skipping insertion in model container [2020-07-28 17:26:25,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:26:25" (3/3) ... [2020-07-28 17:26:25,950 INFO L109 eAbstractionObserver]: Analyzing ICFG inv_square-2.c [2020-07-28 17:26:25,966 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:26:25,974 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:26:25,989 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:26:26,019 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:26:26,020 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:26:26,021 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:26:26,021 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:26:26,022 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:26:26,024 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:26:26,025 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:26:26,026 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:26:26,043 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-07-28 17:26:26,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-28 17:26:26,052 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:26:26,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-28 17:26:26,054 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:26:26,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:26:26,064 INFO L82 PathProgramCache]: Analyzing trace with hash 29681864, now seen corresponding path program 1 times [2020-07-28 17:26:26,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:26:26,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755174378] [2020-07-28 17:26:26,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:26:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:26:26,198 INFO L280 TraceCheckUtils]: 0: Hoare triple {14#true} havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;assume_abort_if_not_#in~cond := (if ~someBinaryFLOATComparisonOperation(main_~x~0, ~someUnaryFLOAToperation(1.0)) && ~someBinaryFLOATComparisonOperation(main_~x~0, 1.0) then 1 else 0);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; {14#true} is VALID [2020-07-28 17:26:26,203 INFO L280 TraceCheckUtils]: 1: Hoare triple {14#true} assume 0 == assume_abort_if_not_~cond;assume false; {15#false} is VALID [2020-07-28 17:26:26,203 INFO L280 TraceCheckUtils]: 2: Hoare triple {15#false} assume ~someBinaryFLOATComparisonOperation(main_~x~0, ~someUnaryFLOAToperation(1.0E-20)) || ~someBinaryFLOATComparisonOperation(main_~x~0, 1.0E-20);main_~y~0 := ~someBinaryArithmeticFLOAToperation(main_~x~0, main_~x~0);__VERIFIER_assert_#in~cond := (if ~someBinaryFLOATComparisonOperation(main_~y~0, 0.0) then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {15#false} is VALID [2020-07-28 17:26:26,204 INFO L280 TraceCheckUtils]: 3: Hoare triple {15#false} assume 0 == __VERIFIER_assert_~cond; {15#false} is VALID [2020-07-28 17:26:26,204 INFO L280 TraceCheckUtils]: 4: Hoare triple {15#false} assume !false; {15#false} is VALID [2020-07-28 17:26:26,207 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 17:26:26,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755174378] [2020-07-28 17:26:26,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:26:26,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 17:26:26,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599026300] [2020-07-28 17:26:26,215 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-07-28 17:26:26,216 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:26:26,219 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 17:26:26,244 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 5 edges. 5 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:26:26,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 17:26:26,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 17:26:26,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 17:26:26,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:26:26,258 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-07-28 17:26:26,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:26:26,339 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-07-28 17:26:26,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 17:26:26,340 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-07-28 17:26:26,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:26:26,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:26:26,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 23 transitions. [2020-07-28 17:26:26,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:26:26,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 23 transitions. [2020-07-28 17:26:26,353 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 23 transitions. [2020-07-28 17:26:26,418 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:26:26,428 INFO L225 Difference]: With dead ends: 20 [2020-07-28 17:26:26,429 INFO L226 Difference]: Without dead ends: 6 [2020-07-28 17:26:26,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:26:26,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2020-07-28 17:26:26,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2020-07-28 17:26:26,460 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:26:26,461 INFO L82 GeneralOperation]: Start isEquivalent. First operand 6 states. Second operand 6 states. [2020-07-28 17:26:26,462 INFO L74 IsIncluded]: Start isIncluded. First operand 6 states. Second operand 6 states. [2020-07-28 17:26:26,462 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 6 states. [2020-07-28 17:26:26,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:26:26,464 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2020-07-28 17:26:26,464 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2020-07-28 17:26:26,465 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:26:26,465 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:26:26,465 INFO L74 IsIncluded]: Start isIncluded. First operand 6 states. Second operand 6 states. [2020-07-28 17:26:26,465 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 6 states. [2020-07-28 17:26:26,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:26:26,467 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2020-07-28 17:26:26,467 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2020-07-28 17:26:26,467 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:26:26,468 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:26:26,468 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:26:26,468 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:26:26,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-28 17:26:26,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2020-07-28 17:26:26,471 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 5 [2020-07-28 17:26:26,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:26:26,471 INFO L479 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2020-07-28 17:26:26,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 17:26:26,472 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2020-07-28 17:26:26,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-28 17:26:26,472 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:26:26,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-28 17:26:26,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:26:26,473 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:26:26,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:26:26,473 INFO L82 PathProgramCache]: Analyzing trace with hash 29741446, now seen corresponding path program 1 times [2020-07-28 17:26:26,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:26:26,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35068985] [2020-07-28 17:26:26,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:26:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:26:26,488 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:26:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:26:26,501 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:26:26,520 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 17:26:26,521 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 17:26:26,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 17:26:26,540 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:26:26,540 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-28 17:26:26,540 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-28 17:26:26,540 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-28 17:26:26,540 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-28 17:26:26,540 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 17:26:26,541 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 17:26:26,541 WARN L170 areAnnotationChecker]: L20-1 has no Hoare annotation [2020-07-28 17:26:26,541 WARN L170 areAnnotationChecker]: L11-1 has no Hoare annotation [2020-07-28 17:26:26,541 WARN L170 areAnnotationChecker]: L11-1 has no Hoare annotation [2020-07-28 17:26:26,544 WARN L170 areAnnotationChecker]: L11-3 has no Hoare annotation [2020-07-28 17:26:26,545 WARN L170 areAnnotationChecker]: L25 has no Hoare annotation [2020-07-28 17:26:26,545 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:26:26,545 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 17:26:26,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:26:26 BoogieIcfgContainer [2020-07-28 17:26:26,548 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:26:26,548 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:26:26,548 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:26:26,549 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:26:26,549 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:26:25" (3/4) ... [2020-07-28 17:26:26,553 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-07-28 17:26:26,553 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:26:26,557 INFO L168 Benchmark]: Toolchain (without parser) took 1247.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 961.6 MB in the beginning and 1.1 GB in the end (delta: -99.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:26:26,558 INFO L168 Benchmark]: CDTParser took 0.34 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 17:26:26,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.12 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 17:26:26,559 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -162.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:26:26,560 INFO L168 Benchmark]: Boogie Preprocessor took 20.59 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 17:26:26,561 INFO L168 Benchmark]: RCFGBuilder took 254.02 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: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:26:26,562 INFO L168 Benchmark]: TraceAbstraction took 607.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. [2020-07-28 17:26:26,562 INFO L168 Benchmark]: Witness Printer took 5.10 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 17:26:26,566 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 0.34 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 258.12 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 94.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -162.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.59 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 254.02 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: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 607.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. * Witness Printer took 5.10 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: 11]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 20, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L15] float x, y, z; [L17] x = __VERIFIER_nondet_float() [L9] COND FALSE !(!cond) [L20] COND TRUE x <= -1e-20f || x >= 1e-20f [L21] y = x * x [L11] COND TRUE !(cond) [L11] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 17:26:28,579 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-28 17:26:28,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:26:28,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:26:28,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:26:28,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:26:28,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:26:28,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:26:28,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:26:28,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:26:28,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:26:28,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:26:28,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:26:28,638 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-07-28 17:26:28,653 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:26:28,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:26:28,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:26:28,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:26:28,656 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:26:28,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:26:28,656 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:26:28,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:26:28,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:26:28,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:26:28,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:26:28,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:26:28,658 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-07-28 17:26:28,658 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-07-28 17:26:28,659 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:26:28,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:26:28,659 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:26:28,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:26:28,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:26:28,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:26:28,660 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:26:28,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:26:28,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:26:28,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:26:28,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:26:28,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:26:28,662 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-07-28 17:26:28,663 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-07-28 17:26:28,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:26:28,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:26:28,663 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-28 17:26:28,664 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 -> 5add81aa0ad059403a21002f7cdd2d19c0a9a94e [2020-07-28 17:26:28,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:26:28,977 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:26:28,981 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:26:28,982 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:26:28,983 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:26:28,984 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_square-2.c [2020-07-28 17:26:29,050 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddcc0eb7d/ee7309c5d51e402f8681b9cd19798a5b/FLAG0fe702323 [2020-07-28 17:26:29,527 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:26:29,528 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square-2.c [2020-07-28 17:26:29,535 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddcc0eb7d/ee7309c5d51e402f8681b9cd19798a5b/FLAG0fe702323 [2020-07-28 17:26:29,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddcc0eb7d/ee7309c5d51e402f8681b9cd19798a5b [2020-07-28 17:26:29,906 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:26:29,910 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:26:29,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:26:29,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:26:29,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:26:29,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:26:29" (1/1) ... [2020-07-28 17:26:29,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8ac7b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:29, skipping insertion in model container [2020-07-28 17:26:29,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:26:29" (1/1) ... [2020-07-28 17:26:29,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:26:29,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:26:30,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:26:30,148 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:26:30,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:26:30,189 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:26:30,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:30 WrapperNode [2020-07-28 17:26:30,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:26:30,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:26:30,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:26:30,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:26:30,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:30" (1/1) ... [2020-07-28 17:26:30,264 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:30" (1/1) ... [2020-07-28 17:26:30,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:26:30,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:26:30,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:26:30,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:26:30,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:30" (1/1) ... [2020-07-28 17:26:30,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:30" (1/1) ... [2020-07-28 17:26:30,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:30" (1/1) ... [2020-07-28 17:26:30,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:30" (1/1) ... [2020-07-28 17:26:30,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:30" (1/1) ... [2020-07-28 17:26:30,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:30" (1/1) ... [2020-07-28 17:26:30,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:30" (1/1) ... [2020-07-28 17:26:30,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:26:30,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:26:30,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:26:30,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:26:30,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:30" (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 17:26:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:26:30,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:26:31,273 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:26:31,274 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-07-28 17:26:31,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:26:31 BoogieIcfgContainer [2020-07-28 17:26:31,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:26:31,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:26:31,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:26:31,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:26:31,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:26:29" (1/3) ... [2020-07-28 17:26:31,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d0b03e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:26:31, skipping insertion in model container [2020-07-28 17:26:31,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:30" (2/3) ... [2020-07-28 17:26:31,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d0b03e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:26:31, skipping insertion in model container [2020-07-28 17:26:31,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:26:31" (3/3) ... [2020-07-28 17:26:31,288 INFO L109 eAbstractionObserver]: Analyzing ICFG inv_square-2.c [2020-07-28 17:26:31,299 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:26:31,307 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:26:31,322 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:26:31,346 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:26:31,347 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:26:31,347 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:26:31,347 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:26:31,347 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:26:31,348 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:26:31,348 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:26:31,348 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:26:31,363 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-07-28 17:26:31,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-07-28 17:26:31,370 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:26:31,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-07-28 17:26:31,372 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:26:31,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:26:31,379 INFO L82 PathProgramCache]: Analyzing trace with hash 889510699, now seen corresponding path program 1 times [2020-07-28 17:26:31,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:26:31,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776240593] [2020-07-28 17:26:31,395 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 17:26:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:26:31,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-28 17:26:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:26:31,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:26:31,601 INFO L280 TraceCheckUtils]: 0: Hoare triple {15#true} currentRoundingMode := ~roundNearestTiesToEven; {15#true} is VALID [2020-07-28 17:26:31,603 INFO L280 TraceCheckUtils]: 1: Hoare triple {15#true} havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;assume_abort_if_not_#in~cond := (if ~fp.geq~FLOAT(main_~x~0, ~fp.neg~FLOAT(~to_fp~FLOAT(currentRoundingMode, 1.0))) && ~fp.leq~FLOAT(main_~x~0, ~to_fp~FLOAT(currentRoundingMode, 1.0)) then 1bv32 else 0bv32);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; {15#true} is VALID [2020-07-28 17:26:31,606 INFO L280 TraceCheckUtils]: 2: Hoare triple {15#true} assume 0bv32 == assume_abort_if_not_~cond;assume false; {16#false} is VALID [2020-07-28 17:26:31,607 INFO L280 TraceCheckUtils]: 3: Hoare triple {16#false} assume ~fp.leq~FLOAT(main_~x~0, ~fp.neg~FLOAT(~to_fp~FLOAT(currentRoundingMode, 1.0E-20))) || ~fp.geq~FLOAT(main_~x~0, ~to_fp~FLOAT(currentRoundingMode, 1.0E-20));main_~y~0 := ~fp.mul~FLOAT(currentRoundingMode, main_~x~0, main_~x~0);__VERIFIER_assert_#in~cond := (if !~fp.eq~FLOAT(main_~y~0, ~Pluszero~FLOAT()) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {16#false} is VALID [2020-07-28 17:26:31,608 INFO L280 TraceCheckUtils]: 4: Hoare triple {16#false} assume 0bv32 == __VERIFIER_assert_~cond; {16#false} is VALID [2020-07-28 17:26:31,608 INFO L280 TraceCheckUtils]: 5: Hoare triple {16#false} assume !false; {16#false} is VALID [2020-07-28 17:26:31,613 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 17:26:31,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:26:31,628 INFO L280 TraceCheckUtils]: 5: Hoare triple {16#false} assume !false; {16#false} is VALID [2020-07-28 17:26:31,628 INFO L280 TraceCheckUtils]: 4: Hoare triple {16#false} assume 0bv32 == __VERIFIER_assert_~cond; {16#false} is VALID [2020-07-28 17:26:31,629 INFO L280 TraceCheckUtils]: 3: Hoare triple {16#false} assume ~fp.leq~FLOAT(main_~x~0, ~fp.neg~FLOAT(~to_fp~FLOAT(currentRoundingMode, 1.0E-20))) || ~fp.geq~FLOAT(main_~x~0, ~to_fp~FLOAT(currentRoundingMode, 1.0E-20));main_~y~0 := ~fp.mul~FLOAT(currentRoundingMode, main_~x~0, main_~x~0);__VERIFIER_assert_#in~cond := (if !~fp.eq~FLOAT(main_~y~0, ~Pluszero~FLOAT()) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {16#false} is VALID [2020-07-28 17:26:31,635 INFO L280 TraceCheckUtils]: 2: Hoare triple {15#true} assume 0bv32 == assume_abort_if_not_~cond;assume false; {16#false} is VALID [2020-07-28 17:26:31,635 INFO L280 TraceCheckUtils]: 1: Hoare triple {15#true} havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;assume_abort_if_not_#in~cond := (if ~fp.geq~FLOAT(main_~x~0, ~fp.neg~FLOAT(~to_fp~FLOAT(currentRoundingMode, 1.0))) && ~fp.leq~FLOAT(main_~x~0, ~to_fp~FLOAT(currentRoundingMode, 1.0)) then 1bv32 else 0bv32);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; {15#true} is VALID [2020-07-28 17:26:31,635 INFO L280 TraceCheckUtils]: 0: Hoare triple {15#true} currentRoundingMode := ~roundNearestTiesToEven; {15#true} is VALID [2020-07-28 17:26:31,636 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 17:26:31,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776240593] [2020-07-28 17:26:31,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:26:31,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-07-28 17:26:31,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587918097] [2020-07-28 17:26:31,648 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-07-28 17:26:31,650 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:26:31,654 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 17:26:31,719 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 17:26:31,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 17:26:31,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:26:31,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 17:26:31,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:26:31,732 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2020-07-28 17:26:32,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:26:32,382 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2020-07-28 17:26:32,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 17:26:32,382 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-07-28 17:26:32,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:26:32,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:26:32,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 24 transitions. [2020-07-28 17:26:32,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:26:32,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 24 transitions. [2020-07-28 17:26:32,392 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 24 transitions. [2020-07-28 17:26:32,798 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:26:32,811 INFO L225 Difference]: With dead ends: 21 [2020-07-28 17:26:32,812 INFO L226 Difference]: Without dead ends: 7 [2020-07-28 17:26:32,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:26:32,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-07-28 17:26:32,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-07-28 17:26:32,847 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:26:32,848 INFO L82 GeneralOperation]: Start isEquivalent. First operand 7 states. Second operand 7 states. [2020-07-28 17:26:32,849 INFO L74 IsIncluded]: Start isIncluded. First operand 7 states. Second operand 7 states. [2020-07-28 17:26:32,849 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 7 states. [2020-07-28 17:26:32,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:26:32,852 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-07-28 17:26:32,852 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-07-28 17:26:32,852 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:26:32,853 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:26:32,854 INFO L74 IsIncluded]: Start isIncluded. First operand 7 states. Second operand 7 states. [2020-07-28 17:26:32,855 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 7 states. [2020-07-28 17:26:32,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:26:32,857 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-07-28 17:26:32,858 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-07-28 17:26:32,858 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:26:32,858 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:26:32,859 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:26:32,859 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:26:32,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-28 17:26:32,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2020-07-28 17:26:32,865 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2020-07-28 17:26:32,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:26:32,866 INFO L479 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2020-07-28 17:26:32,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 17:26:32,867 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-07-28 17:26:32,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-07-28 17:26:32,868 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:26:32,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-07-28 17:26:33,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-07-28 17:26:33,086 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:26:33,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:26:33,087 INFO L82 PathProgramCache]: Analyzing trace with hash 889570281, now seen corresponding path program 1 times [2020-07-28 17:26:33,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:26:33,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108034894] [2020-07-28 17:26:33,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-07-28 17:26:33,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:26:33,193 WARN L261 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-28 17:26:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:26:34,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:26:34,558 INFO L523 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-28 17:26:34,680 INFO L523 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-28 17:26:35,126 INFO L280 TraceCheckUtils]: 0: Hoare triple {95#true} currentRoundingMode := ~roundNearestTiesToEven; {100#(= currentRoundingMode roundNearestTiesToEven)} is VALID [2020-07-28 17:26:35,129 INFO L280 TraceCheckUtils]: 1: Hoare triple {100#(= currentRoundingMode roundNearestTiesToEven)} havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;assume_abort_if_not_#in~cond := (if ~fp.geq~FLOAT(main_~x~0, ~fp.neg~FLOAT(~to_fp~FLOAT(currentRoundingMode, 1.0))) && ~fp.leq~FLOAT(main_~x~0, ~to_fp~FLOAT(currentRoundingMode, 1.0)) then 1bv32 else 0bv32);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; {104#(and (= currentRoundingMode roundNearestTiesToEven) (or (and (= (_ bv0 32) ULTIMATE.start_assume_abort_if_not_~cond) (or (not (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) currentRoundingMode 1.0))) (not (fp.geq ULTIMATE.start_main_~x~0 (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)))))) (and (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) currentRoundingMode 1.0)) (fp.geq ULTIMATE.start_main_~x~0 (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0))))))} is VALID [2020-07-28 17:26:35,132 INFO L280 TraceCheckUtils]: 2: Hoare triple {104#(and (= currentRoundingMode roundNearestTiesToEven) (or (and (= (_ bv0 32) ULTIMATE.start_assume_abort_if_not_~cond) (or (not (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) currentRoundingMode 1.0))) (not (fp.geq ULTIMATE.start_main_~x~0 (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)))))) (and (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) currentRoundingMode 1.0)) (fp.geq ULTIMATE.start_main_~x~0 (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0))))))} assume !(0bv32 == assume_abort_if_not_~cond); {108#(and (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) currentRoundingMode 1.0)) (fp.geq ULTIMATE.start_main_~x~0 (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0))) (= currentRoundingMode roundNearestTiesToEven))} is VALID [2020-07-28 17:26:35,760 INFO L280 TraceCheckUtils]: 3: Hoare triple {108#(and (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) currentRoundingMode 1.0)) (fp.geq ULTIMATE.start_main_~x~0 (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0))) (= currentRoundingMode roundNearestTiesToEven))} assume ~fp.leq~FLOAT(main_~x~0, ~fp.neg~FLOAT(~to_fp~FLOAT(currentRoundingMode, 1.0E-20))) || ~fp.geq~FLOAT(main_~x~0, ~to_fp~FLOAT(currentRoundingMode, 1.0E-20));main_~y~0 := ~fp.mul~FLOAT(currentRoundingMode, main_~x~0, main_~x~0);__VERIFIER_assert_#in~cond := (if !~fp.eq~FLOAT(main_~y~0, ~Pluszero~FLOAT()) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {112#(= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))} is VALID [2020-07-28 17:26:35,761 INFO L280 TraceCheckUtils]: 4: Hoare triple {112#(= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))} assume 0bv32 == __VERIFIER_assert_~cond; {96#false} is VALID [2020-07-28 17:26:35,761 INFO L280 TraceCheckUtils]: 5: Hoare triple {96#false} assume !false; {96#false} is VALID [2020-07-28 17:26:35,762 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 17:26:35,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:26:38,728 INFO L280 TraceCheckUtils]: 5: Hoare triple {96#false} assume !false; {96#false} is VALID [2020-07-28 17:26:38,729 INFO L280 TraceCheckUtils]: 4: Hoare triple {122#(not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))} assume 0bv32 == __VERIFIER_assert_~cond; {96#false} is VALID [2020-07-28 17:26:39,502 INFO L280 TraceCheckUtils]: 3: Hoare triple {95#true} assume ~fp.leq~FLOAT(main_~x~0, ~fp.neg~FLOAT(~to_fp~FLOAT(currentRoundingMode, 1.0E-20))) || ~fp.geq~FLOAT(main_~x~0, ~to_fp~FLOAT(currentRoundingMode, 1.0E-20));main_~y~0 := ~fp.mul~FLOAT(currentRoundingMode, main_~x~0, main_~x~0);__VERIFIER_assert_#in~cond := (if !~fp.eq~FLOAT(main_~y~0, ~Pluszero~FLOAT()) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {122#(not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))} is VALID [2020-07-28 17:26:39,502 INFO L280 TraceCheckUtils]: 2: Hoare triple {95#true} assume !(0bv32 == assume_abort_if_not_~cond); {95#true} is VALID [2020-07-28 17:26:39,503 INFO L280 TraceCheckUtils]: 1: Hoare triple {95#true} havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;assume_abort_if_not_#in~cond := (if ~fp.geq~FLOAT(main_~x~0, ~fp.neg~FLOAT(~to_fp~FLOAT(currentRoundingMode, 1.0))) && ~fp.leq~FLOAT(main_~x~0, ~to_fp~FLOAT(currentRoundingMode, 1.0)) then 1bv32 else 0bv32);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; {95#true} is VALID [2020-07-28 17:26:39,503 INFO L280 TraceCheckUtils]: 0: Hoare triple {95#true} currentRoundingMode := ~roundNearestTiesToEven; {95#true} is VALID [2020-07-28 17:26:39,503 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 17:26:39,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108034894] [2020-07-28 17:26:39,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:26:39,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 3] imperfect sequences [] total 7 [2020-07-28 17:26:39,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108780066] [2020-07-28 17:26:39,506 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2020-07-28 17:26:39,506 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:26:39,506 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-28 17:26:42,326 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:26:42,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-28 17:26:42,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:26:42,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-28 17:26:42,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-28 17:26:42,328 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand 7 states. [2020-07-28 17:26:42,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:26:42,926 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-07-28 17:26:42,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-28 17:26:42,927 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2020-07-28 17:26:42,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:26:42,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-28 17:26:42,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2020-07-28 17:26:42,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-28 17:26:42,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2020-07-28 17:26:42,929 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 6 transitions. [2020-07-28 17:26:43,566 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 17:26:43,566 INFO L225 Difference]: With dead ends: 7 [2020-07-28 17:26:43,567 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 17:26:43,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-28 17:26:43,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 17:26:43,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 17:26:43,569 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:26:43,569 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 17:26:43,569 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:26:43,570 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:26:43,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:26:43,570 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:26:43,570 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:26:43,570 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:26:43,571 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:26:43,571 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:26:43,571 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:26:43,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:26:43,571 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:26:43,571 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:26:43,572 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:26:43,572 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:26:43,572 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:26:43,572 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:26:43,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 17:26:43,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 17:26:43,573 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2020-07-28 17:26:43,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:26:43,573 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 17:26:43,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-28 17:26:43,573 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:26:43,573 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:26:43,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-07-28 17:26:43,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 17:26:43,825 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 17:26:43,825 INFO L271 CegarLoopResult]: At program point L25(lines 13 26) the Hoare annotation is: true [2020-07-28 17:26:43,825 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-07-28 17:26:43,826 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-07-28 17:26:43,826 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-07-28 17:26:43,826 INFO L271 CegarLoopResult]: At program point L11-3(line 11) the Hoare annotation is: true [2020-07-28 17:26:43,826 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-07-28 17:26:43,826 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 17:26:43,826 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 17:26:43,827 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2020-07-28 17:26:43,827 INFO L268 CegarLoopResult]: For program point L20-1(lines 20 24) no Hoare annotation was computed. [2020-07-28 17:26:43,827 INFO L268 CegarLoopResult]: For program point L8(lines 20 24) no Hoare annotation was computed. [2020-07-28 17:26:43,833 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:26:43,833 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:26:43,833 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-28 17:26:43,834 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-28 17:26:43,834 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-28 17:26:43,834 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-28 17:26:43,834 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 17:26:43,834 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 17:26:43,835 WARN L170 areAnnotationChecker]: L20-1 has no Hoare annotation [2020-07-28 17:26:43,835 WARN L170 areAnnotationChecker]: L11-1 has no Hoare annotation [2020-07-28 17:26:43,835 WARN L170 areAnnotationChecker]: L11-1 has no Hoare annotation [2020-07-28 17:26:43,835 WARN L170 areAnnotationChecker]: L20-1 has no Hoare annotation [2020-07-28 17:26:43,836 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:26:43,836 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:26:43,836 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 17:26:43,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:26:43 BoogieIcfgContainer [2020-07-28 17:26:43,842 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:26:43,843 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:26:43,843 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:26:43,844 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:26:43,844 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:26:31" (3/4) ... [2020-07-28 17:26:43,848 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 17:26:43,862 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-07-28 17:26:43,862 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-07-28 17:26:43,863 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-07-28 17:26:43,912 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:26:43,913 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:26:43,917 INFO L168 Benchmark]: Toolchain (without parser) took 14007.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 960.2 MB in the beginning and 1.0 GB in the end (delta: -40.5 MB). Peak memory consumption was 82.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:26:43,918 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 17:26:43,918 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.27 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 17:26:43,919 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -170.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:26:43,920 INFO L168 Benchmark]: Boogie Preprocessor took 27.44 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:26:43,921 INFO L168 Benchmark]: RCFGBuilder took 968.62 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 17:26:43,922 INFO L168 Benchmark]: TraceAbstraction took 12563.18 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: 91.9 MB). Peak memory consumption was 91.9 MB. Max. memory is 11.5 GB. [2020-07-28 17:26:43,922 INFO L168 Benchmark]: Witness Printer took 70.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:26:43,926 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 279.27 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 89.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -170.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.44 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 968.62 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 12563.18 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: 91.9 MB). Peak memory consumption was 91.9 MB. Max. memory is 11.5 GB. * Witness Printer took 70.11 ms. Allocated memory is still 1.2 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: - PositiveResult [Line: 11]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 6 SDslu, 2 SDs, 0 SdLazy, 10 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.2s 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 400 SizeOfPredicates, 7 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...