./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer --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 c9c4c4712c0b03f250e94d62f797a284bfa7b46f ....................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer --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 c9c4c4712c0b03f250e94d62f797a284bfa7b46f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 04:13:49,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 04:13:49,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 04:13:49,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 04:13:49,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 04:13:49,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 04:13:49,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 04:13:49,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 04:13:49,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 04:13:49,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 04:13:49,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 04:13:49,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 04:13:49,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 04:13:49,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 04:13:49,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 04:13:49,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 04:13:49,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 04:13:49,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 04:13:49,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 04:13:49,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 04:13:49,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 04:13:49,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 04:13:49,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 04:13:49,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 04:13:49,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 04:13:49,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 04:13:49,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 04:13:49,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 04:13:49,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 04:13:49,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 04:13:49,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 04:13:49,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 04:13:49,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 04:13:49,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 04:13:49,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 04:13:49,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 04:13:49,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 04:13:49,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 04:13:49,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 04:13:49,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 04:13:49,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 04:13:49,782 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 04:13:49,794 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 04:13:49,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 04:13:49,795 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 04:13:49,795 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 04:13:49,796 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 04:13:49,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 04:13:49,796 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 04:13:49,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 04:13:49,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 04:13:49,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 04:13:49,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 04:13:49,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 04:13:49,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 04:13:49,809 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 04:13:49,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 04:13:49,810 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 04:13:49,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 04:13:49,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 04:13:49,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 04:13:49,811 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 04:13:49,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 04:13:49,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 04:13:49,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 04:13:49,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 04:13:49,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 04:13:49,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 04:13:49,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 04:13:49,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 04:13:49,813 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer 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 -> c9c4c4712c0b03f250e94d62f797a284bfa7b46f [2019-11-20 04:13:49,955 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 04:13:49,969 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 04:13:49,972 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 04:13:49,980 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 04:13:49,980 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 04:13:49,981 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer/../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2019-11-20 04:13:50,026 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer/data/b9eb861a3/37009b41dcf24136a2b93b05b55ff077/FLAGb61dcb2e2 [2019-11-20 04:13:50,403 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 04:13:50,405 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2019-11-20 04:13:50,410 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer/data/b9eb861a3/37009b41dcf24136a2b93b05b55ff077/FLAGb61dcb2e2 [2019-11-20 04:13:50,424 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer/data/b9eb861a3/37009b41dcf24136a2b93b05b55ff077 [2019-11-20 04:13:50,427 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 04:13:50,428 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 04:13:50,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 04:13:50,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 04:13:50,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 04:13:50,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:13:50" (1/1) ... [2019-11-20 04:13:50,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38dcddee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:13:50, skipping insertion in model container [2019-11-20 04:13:50,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:13:50" (1/1) ... [2019-11-20 04:13:50,447 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 04:13:50,461 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 04:13:50,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:13:50,581 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 04:13:50,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:13:50,663 INFO L192 MainTranslator]: Completed translation [2019-11-20 04:13:50,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:13:50 WrapperNode [2019-11-20 04:13:50,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 04:13:50,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 04:13:50,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 04:13:50,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 04:13:50,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:13:50" (1/1) ... [2019-11-20 04:13:50,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:13:50" (1/1) ... [2019-11-20 04:13:50,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 04:13:50,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 04:13:50,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 04:13:50,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 04:13:50,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:13:50" (1/1) ... [2019-11-20 04:13:50,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:13:50" (1/1) ... [2019-11-20 04:13:50,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:13:50" (1/1) ... [2019-11-20 04:13:50,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:13:50" (1/1) ... [2019-11-20 04:13:50,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:13:50" (1/1) ... [2019-11-20 04:13:50,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:13:50" (1/1) ... [2019-11-20 04:13:50,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:13:50" (1/1) ... [2019-11-20 04:13:50,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 04:13:50,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 04:13:50,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 04:13:50,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 04:13:50,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:13:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer/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 [2019-11-20 04:13:50,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 04:13:50,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 04:13:50,926 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 04:13:50,927 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-20 04:13:50,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:13:50 BoogieIcfgContainer [2019-11-20 04:13:50,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 04:13:50,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 04:13:50,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 04:13:50,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 04:13:50,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 04:13:50" (1/3) ... [2019-11-20 04:13:50,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391c87e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:13:50, skipping insertion in model container [2019-11-20 04:13:50,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:13:50" (2/3) ... [2019-11-20 04:13:50,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391c87e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:13:50, skipping insertion in model container [2019-11-20 04:13:50,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:13:50" (3/3) ... [2019-11-20 04:13:50,938 INFO L109 eAbstractionObserver]: Analyzing ICFG Float_div.i [2019-11-20 04:13:50,947 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 04:13:50,952 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 04:13:50,962 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 04:13:50,989 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 04:13:50,989 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 04:13:50,989 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 04:13:50,989 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 04:13:50,990 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 04:13:50,990 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 04:13:50,990 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 04:13:50,990 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 04:13:51,002 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-11-20 04:13:51,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-20 04:13:51,007 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:13:51,008 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-20 04:13:51,008 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:13:51,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:13:51,014 INFO L82 PathProgramCache]: Analyzing trace with hash 29805000, now seen corresponding path program 1 times [2019-11-20 04:13:51,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:13:51,023 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369698720] [2019-11-20 04:13:51,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:13:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:13:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:13:51,133 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:13:51,133 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 04:13:51,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 04:13:51 BoogieIcfgContainer [2019-11-20 04:13:51,147 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 04:13:51,148 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 04:13:51,148 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 04:13:51,148 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 04:13:51,148 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:13:50" (3/4) ... [2019-11-20 04:13:51,152 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 04:13:51,152 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 04:13:51,154 INFO L168 Benchmark]: Toolchain (without parser) took 724.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -156.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:13:51,154 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:13:51,155 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -187.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-20 04:13:51,156 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.80 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. [2019-11-20 04:13:51,156 INFO L168 Benchmark]: Boogie Preprocessor took 14.31 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. [2019-11-20 04:13:51,157 INFO L168 Benchmark]: RCFGBuilder took 225.58 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: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. [2019-11-20 04:13:51,158 INFO L168 Benchmark]: TraceAbstraction took 217.41 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: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2019-11-20 04:13:51,159 INFO L168 Benchmark]: Witness Printer took 4.30 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. [2019-11-20 04:13:51,167 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 233.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -187.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 23.80 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. * Boogie Preprocessor took 14.31 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 225.58 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: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 217.41 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: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.30 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: 2]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 18, overapproximation of someBinaryArithmeticFLOAToperation at line 10. Possible FailurePath: [L9] float x = 1.0f; [L10] float x1 = x/2.5f; [L12] COND FALSE !(x1 != x) [L2] COND TRUE !(cond) [L2] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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 0.1.24-678e011 [2019-11-20 04:13:53,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 04:13:53,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 04:13:53,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 04:13:53,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 04:13:53,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 04:13:53,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 04:13:53,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 04:13:53,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 04:13:53,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 04:13:53,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 04:13:53,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 04:13:53,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 04:13:53,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 04:13:53,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 04:13:53,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 04:13:53,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 04:13:53,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 04:13:53,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 04:13:53,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 04:13:53,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 04:13:53,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 04:13:53,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 04:13:53,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 04:13:53,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 04:13:53,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 04:13:53,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 04:13:53,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 04:13:53,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 04:13:53,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 04:13:53,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 04:13:53,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 04:13:53,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 04:13:53,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 04:13:53,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 04:13:53,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 04:13:53,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 04:13:53,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 04:13:53,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 04:13:53,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 04:13:53,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 04:13:53,135 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-20 04:13:53,152 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 04:13:53,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 04:13:53,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 04:13:53,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 04:13:53,155 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 04:13:53,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 04:13:53,155 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 04:13:53,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 04:13:53,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 04:13:53,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 04:13:53,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 04:13:53,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 04:13:53,157 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 04:13:53,157 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 04:13:53,158 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 04:13:53,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 04:13:53,158 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 04:13:53,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 04:13:53,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 04:13:53,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 04:13:53,159 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 04:13:53,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 04:13:53,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 04:13:53,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 04:13:53,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 04:13:53,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 04:13:53,160 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 04:13:53,161 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 04:13:53,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 04:13:53,161 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 04:13:53,161 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer 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 -> c9c4c4712c0b03f250e94d62f797a284bfa7b46f [2019-11-20 04:13:53,423 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 04:13:53,440 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 04:13:53,446 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 04:13:53,447 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 04:13:53,448 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 04:13:53,449 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer/../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2019-11-20 04:13:53,504 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer/data/9dd9360bb/33729f07ab904fd1b740ade75c4b1e51/FLAG2fdf6055c [2019-11-20 04:13:53,898 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 04:13:53,899 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2019-11-20 04:13:53,904 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer/data/9dd9360bb/33729f07ab904fd1b740ade75c4b1e51/FLAG2fdf6055c [2019-11-20 04:13:54,334 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer/data/9dd9360bb/33729f07ab904fd1b740ade75c4b1e51 [2019-11-20 04:13:54,337 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 04:13:54,338 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 04:13:54,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 04:13:54,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 04:13:54,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 04:13:54,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:13:54" (1/1) ... [2019-11-20 04:13:54,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d60572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:13:54, skipping insertion in model container [2019-11-20 04:13:54,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:13:54" (1/1) ... [2019-11-20 04:13:54,352 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 04:13:54,370 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 04:13:54,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:13:54,542 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 04:13:54,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:13:54,568 INFO L192 MainTranslator]: Completed translation [2019-11-20 04:13:54,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:13:54 WrapperNode [2019-11-20 04:13:54,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 04:13:54,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 04:13:54,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 04:13:54,570 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 04:13:54,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:13:54" (1/1) ... [2019-11-20 04:13:54,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:13:54" (1/1) ... [2019-11-20 04:13:54,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 04:13:54,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 04:13:54,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 04:13:54,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 04:13:54,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:13:54" (1/1) ... [2019-11-20 04:13:54,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:13:54" (1/1) ... [2019-11-20 04:13:54,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:13:54" (1/1) ... [2019-11-20 04:13:54,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:13:54" (1/1) ... [2019-11-20 04:13:54,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:13:54" (1/1) ... [2019-11-20 04:13:54,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:13:54" (1/1) ... [2019-11-20 04:13:54,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:13:54" (1/1) ... [2019-11-20 04:13:54,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 04:13:54,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 04:13:54,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 04:13:54,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 04:13:54,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:13:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer/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 [2019-11-20 04:13:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 04:13:54,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 04:13:54,983 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 04:13:54,983 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-20 04:13:54,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:13:54 BoogieIcfgContainer [2019-11-20 04:13:54,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 04:13:54,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 04:13:54,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 04:13:54,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 04:13:54,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 04:13:54" (1/3) ... [2019-11-20 04:13:54,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e3dd0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:13:54, skipping insertion in model container [2019-11-20 04:13:54,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:13:54" (2/3) ... [2019-11-20 04:13:54,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e3dd0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:13:54, skipping insertion in model container [2019-11-20 04:13:54,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:13:54" (3/3) ... [2019-11-20 04:13:54,989 INFO L109 eAbstractionObserver]: Analyzing ICFG Float_div.i [2019-11-20 04:13:54,998 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 04:13:55,004 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 04:13:55,014 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 04:13:55,034 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 04:13:55,034 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 04:13:55,035 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 04:13:55,035 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 04:13:55,035 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 04:13:55,035 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 04:13:55,035 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 04:13:55,035 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 04:13:55,048 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-11-20 04:13:55,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-20 04:13:55,053 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:13:55,053 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-20 04:13:55,054 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:13:55,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:13:55,059 INFO L82 PathProgramCache]: Analyzing trace with hash 29805000, now seen corresponding path program 1 times [2019-11-20 04:13:55,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:13:55,068 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743742209] [2019-11-20 04:13:55,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer/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 [2019-11-20 04:13:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:13:55,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 04:13:55,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:13:55,834 WARN L191 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-11-20 04:13:55,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:13:55,842 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:13:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:13:55,861 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743742209] [2019-11-20 04:13:55,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:13:55,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-20 04:13:55,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144937428] [2019-11-20 04:13:55,866 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 04:13:55,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:13:55,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 04:13:55,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 04:13:55,877 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2019-11-20 04:13:57,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:13:57,224 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2019-11-20 04:13:57,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 04:13:57,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-20 04:13:57,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:13:57,234 INFO L225 Difference]: With dead ends: 20 [2019-11-20 04:13:57,234 INFO L226 Difference]: Without dead ends: 8 [2019-11-20 04:13:57,237 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 04:13:57,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-20 04:13:57,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-20 04:13:57,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-20 04:13:57,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-20 04:13:57,266 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2019-11-20 04:13:57,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:13:57,266 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-20 04:13:57,267 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 04:13:57,267 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-20 04:13:57,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 04:13:57,267 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:13:57,268 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-11-20 04:13:57,481 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-20 04:13:57,482 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:13:57,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:13:57,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1368874232, now seen corresponding path program 1 times [2019-11-20 04:13:57,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:13:57,482 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1389274171] [2019-11-20 04:13:57,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer/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 [2019-11-20 04:13:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:13:57,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 04:13:57,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:13:58,385 WARN L191 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2019-11-20 04:13:58,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:13:58,388 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:14:00,385 WARN L191 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2019-11-20 04:14:15,753 WARN L191 SmtUtils]: Spent 2.37 s on a formula simplification that was a NOOP. DAG size: 8 [2019-11-20 04:14:15,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:14:15,755 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1389274171] [2019-11-20 04:14:15,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 04:14:15,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-11-20 04:14:15,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098447248] [2019-11-20 04:14:15,756 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 04:14:15,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:14:15,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 04:14:15,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=34, Unknown=1, NotChecked=0, Total=56 [2019-11-20 04:14:15,757 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 8 states. [2019-11-20 04:14:26,950 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 11 [2019-11-20 04:14:33,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:14:33,876 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-20 04:14:33,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 04:14:33,876 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2019-11-20 04:14:33,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:14:33,877 INFO L225 Difference]: With dead ends: 15 [2019-11-20 04:14:33,877 INFO L226 Difference]: Without dead ends: 11 [2019-11-20 04:14:33,878 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=40, Invalid=68, Unknown=2, NotChecked=0, Total=110 [2019-11-20 04:14:33,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-20 04:14:33,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-20 04:14:33,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-20 04:14:33,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-11-20 04:14:33,881 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2019-11-20 04:14:33,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:14:33,882 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-11-20 04:14:33,882 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 04:14:33,882 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-11-20 04:14:33,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 04:14:33,882 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:14:33,883 INFO L410 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1] [2019-11-20 04:14:34,096 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-20 04:14:34,096 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:14:34,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:14:34,096 INFO L82 PathProgramCache]: Analyzing trace with hash -2059024878, now seen corresponding path program 2 times [2019-11-20 04:14:34,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:14:34,097 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161221847] [2019-11-20 04:14:34,097 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-20 04:14:34,378 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 04:14:34,378 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 04:14:34,396 WARN L253 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-20 04:14:34,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:14:35,692 WARN L191 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2019-11-20 04:14:35,694 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:14:35,695 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:14:38,644 WARN L860 $PredicateComparison]: unable to prove that (or (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~x1~0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0))) c_ULTIMATE.start_main_~x1~0))) is different from true [2019-11-20 04:15:01,721 WARN L191 SmtUtils]: Spent 5.74 s on a formula simplification that was a NOOP. DAG size: 12 [2019-11-20 04:15:03,831 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2019-11-20 04:15:05,906 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2019-11-20 04:15:08,013 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2019-11-20 04:15:10,116 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2019-11-20 04:15:12,248 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2019-11-20 04:15:14,379 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2019-11-20 04:15:14,380 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 14 not checked. [2019-11-20 04:15:14,380 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161221847] [2019-11-20 04:15:14,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 04:15:14,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2019-11-20 04:15:14,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870145595] [2019-11-20 04:15:14,382 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-20 04:15:14,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:15:14,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-20 04:15:14,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=102, Unknown=9, NotChecked=92, Total=240 [2019-11-20 04:15:14,383 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 16 states. [2019-11-20 04:15:16,540 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (and (= c_ULTIMATE.start_main_~x1~0 (fp.div roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven 1.0) .cse0)) (or (not (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0)) (fp.eq c_ULTIMATE.start_main_~x~0 .cse1)) (let ((.cse2 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~x1~0 .cse0) .cse0) .cse0) .cse0))) (or (fp.eq .cse2 .cse1) (not (fp.eq (fp.div roundNearestTiesToEven .cse2 .cse0) .cse2)))))) is different from true [2019-11-20 04:15:18,640 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (.cse1 (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~x1~0 .cse2))) (and (or (fp.eq c_ULTIMATE.start_main_~x1~0 .cse0) (not (fp.eq .cse1 c_ULTIMATE.start_main_~x1~0))) (= c_ULTIMATE.start_main_~x1~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven 1.0) .cse2) .cse2)) (let ((.cse3 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven .cse1 .cse2) .cse2))) (or (fp.eq .cse3 .cse0) (not (fp.eq (fp.div roundNearestTiesToEven .cse3 .cse2) .cse3))))))) is different from false [2019-11-20 04:15:20,749 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (.cse1 (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~x1~0 .cse2))) (and (or (fp.eq c_ULTIMATE.start_main_~x1~0 .cse0) (not (fp.eq .cse1 c_ULTIMATE.start_main_~x1~0))) (= c_ULTIMATE.start_main_~x1~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven 1.0) .cse2) .cse2)) (let ((.cse3 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven .cse1 .cse2) .cse2))) (or (fp.eq .cse3 .cse0) (not (fp.eq (fp.div roundNearestTiesToEven .cse3 .cse2) .cse3))))))) is different from true [2019-11-20 04:15:22,834 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (and (or (not (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0)) (fp.eq c_ULTIMATE.start_main_~x~0 .cse0)) (let ((.cse1 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~x1~0 .cse2) .cse2))) (or (fp.eq .cse1 .cse0) (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse2) .cse1)))) (= (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven 1.0) .cse2) .cse2) .cse2) c_ULTIMATE.start_main_~x1~0))) is different from true [2019-11-20 04:15:25,613 WARN L191 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 16 [2019-11-20 04:16:02,442 WARN L191 SmtUtils]: Spent 20.29 s on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2019-11-20 04:16:26,070 WARN L191 SmtUtils]: Spent 9.26 s on a formula simplification that was a NOOP. DAG size: 15 [2019-11-20 04:16:43,667 WARN L191 SmtUtils]: Spent 5.92 s on a formula simplification that was a NOOP. DAG size: 17 [2019-11-20 04:16:53,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:16:53,390 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2019-11-20 04:16:53,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 04:16:53,390 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 10 [2019-11-20 04:16:53,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:16:53,391 INFO L225 Difference]: With dead ends: 21 [2019-11-20 04:16:53,391 INFO L226 Difference]: Without dead ends: 15 [2019-11-20 04:16:53,393 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 121.9s TimeCoverageRelationStatistics Valid=66, Invalid=184, Unknown=18, NotChecked=238, Total=506 [2019-11-20 04:16:53,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-20 04:16:53,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-20 04:16:53,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-20 04:16:53,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-11-20 04:16:53,396 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2019-11-20 04:16:53,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:16:53,396 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-11-20 04:16:53,396 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-20 04:16:53,396 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-11-20 04:16:53,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 04:16:53,397 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:16:53,397 INFO L410 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1] [2019-11-20 04:16:53,597 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-20 04:16:53,598 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:16:53,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:16:53,598 INFO L82 PathProgramCache]: Analyzing trace with hash 833418130, now seen corresponding path program 3 times [2019-11-20 04:16:53,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:16:53,601 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780549608] [2019-11-20 04:16:53,601 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-20 04:16:53,849 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-20 04:16:53,849 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 04:16:53,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 04:16:53,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:16:54,708 WARN L191 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2019-11-20 04:17:03,203 WARN L191 SmtUtils]: Spent 5.64 s on a formula simplification that was a NOOP. DAG size: 15 [2019-11-20 04:17:05,263 WARN L838 $PredicateComparison]: unable to prove that (and (fp.eq (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0))) c_ULTIMATE.start_main_~x~0) (exists ((v_ULTIMATE.start_main_~x~0_15 (_ FloatingPoint 8 24))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_15 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0))))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_15)) (= c_ULTIMATE.start_main_~x~0 .cse0))))) is different from false [2019-11-20 04:17:05,499 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 04:17:15,150 WARN L838 $PredicateComparison]: unable to prove that (or (and (exists ((v_ULTIMATE.start_main_~x~0_15 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_15 .cse1))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_15)) (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (and (exists ((v_ULTIMATE.start_main_~x~0_15 (_ FloatingPoint 8 24))) (let ((.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse2 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_15 .cse3))) (and (not (fp.eq .cse2 v_ULTIMATE.start_main_~x~0_15)) (not (fp.eq .cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse2 .cse3) .cse2))))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) is different from false [2019-11-20 04:17:21,326 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_15 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_15 .cse1))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_15)) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2019-11-20 04:17:23,375 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_15 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_15 .cse1))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_15)) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2019-11-20 04:17:23,377 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-20 04:17:23,377 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:17:40,477 WARN L191 SmtUtils]: Spent 3.98 s on a formula simplification that was a NOOP. DAG size: 13 [2019-11-20 04:17:46,652 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_17 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_17 .cse1))) (or (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_17) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))))))) is different from false [2019-11-20 04:17:48,710 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_17 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_17 .cse1))) (or (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_17) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))))))) is different from true [2019-11-20 04:18:17,527 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 16 not checked. [2019-11-20 04:18:17,527 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780549608] [2019-11-20 04:18:17,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-20 04:18:17,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 12 [2019-11-20 04:18:17,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959642540] [2019-11-20 04:18:17,528 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 04:18:17,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:18:17,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 04:18:17,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=39, Unknown=10, NotChecked=60, Total=132 [2019-11-20 04:18:17,529 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 7 states. [2019-11-20 04:18:22,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:18:22,712 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-11-20 04:18:22,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 04:18:22,766 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-11-20 04:18:22,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:18:22,767 INFO L225 Difference]: With dead ends: 15 [2019-11-20 04:18:22,767 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 04:18:22,767 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 39.0s TimeCoverageRelationStatistics Valid=23, Invalid=39, Unknown=10, NotChecked=60, Total=132 [2019-11-20 04:18:22,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 04:18:22,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 04:18:22,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 04:18:22,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 04:18:22,768 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-11-20 04:18:22,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:18:22,768 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:18:22,768 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 04:18:22,768 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 04:18:22,768 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 04:18:22,969 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-20 04:18:22,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 04:18:29,030 WARN L191 SmtUtils]: Spent 5.99 s on a formula simplification that was a NOOP. DAG size: 15 [2019-11-20 04:18:29,032 INFO L444 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-11-20 04:18:29,032 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 04:18:29,032 INFO L447 ceAbstractionStarter]: At program point L2-3(line 2) the Hoare annotation is: true [2019-11-20 04:18:29,032 INFO L447 ceAbstractionStarter]: At program point L19(lines 7 20) the Hoare annotation is: true [2019-11-20 04:18:29,033 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 04:18:29,033 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 04:18:29,033 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-11-20 04:18:29,033 INFO L440 ceAbstractionStarter]: At program point L12-2(lines 12 16) the Hoare annotation is: (and (= ULTIMATE.start_main_~x1~0 (fp.div roundNearestTiesToEven ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (exists ((v_ULTIMATE.start_main_~x~0_15 (_ FloatingPoint 8 24))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_15 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0))))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_15)) (= ULTIMATE.start_main_~x~0 .cse0))))) [2019-11-20 04:18:29,033 INFO L444 ceAbstractionStarter]: For program point L12-3(lines 12 16) no Hoare annotation was computed. [2019-11-20 04:18:29,033 INFO L444 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-11-20 04:18:29,042 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-20 04:18:29,043 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-20 04:18:29,043 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-20 04:18:29,044 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_15,QUANTIFIED] [2019-11-20 04:18:29,044 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-20 04:18:29,044 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_15,QUANTIFIED] [2019-11-20 04:18:29,044 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-20 04:18:29,045 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_15,QUANTIFIED] [2019-11-20 04:18:29,045 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-20 04:18:29,048 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-20 04:18:29,048 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-20 04:18:29,048 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-20 04:18:29,049 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_15,QUANTIFIED] [2019-11-20 04:18:29,049 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-20 04:18:29,049 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_15,QUANTIFIED] [2019-11-20 04:18:29,049 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-20 04:18:29,049 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_15,QUANTIFIED] [2019-11-20 04:18:29,050 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-20 04:18:29,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 04:18:29 BoogieIcfgContainer [2019-11-20 04:18:29,052 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 04:18:29,052 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 04:18:29,052 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 04:18:29,052 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 04:18:29,053 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:13:54" (3/4) ... [2019-11-20 04:18:29,057 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 04:18:29,065 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-20 04:18:29,065 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-20 04:18:29,091 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x1 == ~fp.div~FLOAT(~roundNearestTiesToEven, x, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2)) && (\exists v_ULTIMATE.start_main_~x~0_15 : C_FLOAT :: !~fp.eq~FLOAT(~fp.div~FLOAT(~roundNearestTiesToEven, v_ULTIMATE.start_main_~x~0_15, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2)), v_ULTIMATE.start_main_~x~0_15) && x == ~fp.div~FLOAT(~roundNearestTiesToEven, v_ULTIMATE.start_main_~x~0_15, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2))) [2019-11-20 04:18:29,102 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3feabb9d-cfc9-43a1-9b05-3fa5096404b0/bin/uautomizer/witness.graphml [2019-11-20 04:18:29,102 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 04:18:29,104 INFO L168 Benchmark]: Toolchain (without parser) took 274765.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 956.4 MB in the beginning and 992.7 MB in the end (delta: -36.3 MB). Peak memory consumption was 121.0 MB. Max. memory is 11.5 GB. [2019-11-20 04:18:29,104 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:18:29,105 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.12 ms. Allocated memory is still 1.0 GB. Free memory was 956.4 MB in the beginning and 945.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-20 04:18:29,106 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -208.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-20 04:18:29,107 INFO L168 Benchmark]: Boogie Preprocessor took 21.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-11-20 04:18:29,108 INFO L168 Benchmark]: RCFGBuilder took 313.39 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: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 11.5 GB. [2019-11-20 04:18:29,108 INFO L168 Benchmark]: TraceAbstraction took 274067.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 999.1 MB in the end (delta: 136.1 MB). Peak memory consumption was 136.1 MB. Max. memory is 11.5 GB. [2019-11-20 04:18:29,109 INFO L168 Benchmark]: Witness Printer took 50.29 ms. Allocated memory is still 1.2 GB. Free memory was 999.1 MB in the beginning and 992.7 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-11-20 04:18:29,113 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 231.12 ms. Allocated memory is still 1.0 GB. Free memory was 956.4 MB in the beginning and 945.7 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 78.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -208.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 313.39 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: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 274067.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 999.1 MB in the end (delta: 136.1 MB). Peak memory consumption was 136.1 MB. Max. memory is 11.5 GB. * Witness Printer took 50.29 ms. Allocated memory is still 1.2 GB. Free memory was 999.1 MB in the beginning and 992.7 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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: 2]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 12]: Loop Invariant [2019-11-20 04:18:29,124 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-20 04:18:29,124 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-20 04:18:29,124 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-20 04:18:29,124 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_15,QUANTIFIED] [2019-11-20 04:18:29,125 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-20 04:18:29,125 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_15,QUANTIFIED] [2019-11-20 04:18:29,125 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-20 04:18:29,125 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_15,QUANTIFIED] [2019-11-20 04:18:29,126 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-20 04:18:29,128 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-20 04:18:29,128 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-20 04:18:29,128 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-20 04:18:29,128 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_15,QUANTIFIED] [2019-11-20 04:18:29,129 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-20 04:18:29,129 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_15,QUANTIFIED] [2019-11-20 04:18:29,129 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-20 04:18:29,129 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_15,QUANTIFIED] [2019-11-20 04:18:29,129 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: x1 == ~fp.div~FLOAT(~roundNearestTiesToEven, x, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2)) && (\exists v_ULTIMATE.start_main_~x~0_15 : C_FLOAT :: !~fp.eq~FLOAT(~fp.div~FLOAT(~roundNearestTiesToEven, v_ULTIMATE.start_main_~x~0_15, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2)), v_ULTIMATE.start_main_~x~0_15) && x == ~fp.div~FLOAT(~roundNearestTiesToEven, v_ULTIMATE.start_main_~x~0_15, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2))) - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Result: SAFE, OverallTime: 274.0s, OverallIterations: 4, TraceHistogramMax: 9, AutomataDifference: 123.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.0s, HoareTripleCheckerStatistics: 18 SDtfs, 4 SDslu, 31 SDs, 0 SdLazy, 69 SolverSat, 14 SolverUnsat, 11 SolverUnknown, 0 SolverNotchecked, 34.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 185.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=3, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 14 NumberOfFragments, 30 HoareAnnotationTreeSize, 3 FomulaSimplifications, 718 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 5.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 142.5s InterpolantComputationTime, 36 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 64 ConstructedInterpolants, 12 QuantifiedInterpolants, 11277 SizeOfPredicates, 16 NumberOfNonLiveVariables, 69 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 73/126 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...