./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_248038a7-d8dc-4ec6-a96f-6723cfe767e6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_248038a7-d8dc-4ec6-a96f-6723cfe767e6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_248038a7-d8dc-4ec6-a96f-6723cfe767e6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_248038a7-d8dc-4ec6-a96f-6723cfe767e6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_4.i -s /tmp/vcloud-vcloud-master/worker/run_dir_248038a7-d8dc-4ec6-a96f-6723cfe767e6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_248038a7-d8dc-4ec6-a96f-6723cfe767e6/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 fddb92276d9c39d57f5b99be31dfd08cb5ab054d ......................................................................................................................................................................................................................... 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_248038a7-d8dc-4ec6-a96f-6723cfe767e6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_248038a7-d8dc-4ec6-a96f-6723cfe767e6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_248038a7-d8dc-4ec6-a96f-6723cfe767e6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_248038a7-d8dc-4ec6-a96f-6723cfe767e6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_4.i -s /tmp/vcloud-vcloud-master/worker/run_dir_248038a7-d8dc-4ec6-a96f-6723cfe767e6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_248038a7-d8dc-4ec6-a96f-6723cfe767e6/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 fddb92276d9c39d57f5b99be31dfd08cb5ab054d ............................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 17:31:20,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:31:20,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:31:21,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:31:21,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:31:21,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:31:21,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:31:21,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:31:21,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:31:21,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:31:21,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:31:21,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:31:21,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:31:21,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:31:21,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:31:21,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:31:21,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:31:21,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:31:21,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:31:21,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:31:21,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:31:21,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:31:21,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:31:21,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:31:21,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:31:21,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:31:21,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:31:21,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:31:21,022 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:31:21,023 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:31:21,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:31:21,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:31:21,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:31:21,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:31:21,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:31:21,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:31:21,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:31:21,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:31:21,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:31:21,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:31:21,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:31:21,027 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_248038a7-d8dc-4ec6-a96f-6723cfe767e6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 17:31:21,036 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:31:21,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:31:21,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:31:21,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:31:21,038 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:31:21,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:31:21,038 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:31:21,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:31:21,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:31:21,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:31:21,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 17:31:21,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:31:21,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 17:31:21,039 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:31:21,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:31:21,039 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:31:21,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 17:31:21,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:31:21,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:31:21,040 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:31:21,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:31:21,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:31:21,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:31:21,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:31:21,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 17:31:21,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:31:21,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 17:31:21,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 17:31:21,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:31:21,041 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_248038a7-d8dc-4ec6-a96f-6723cfe767e6/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 -> fddb92276d9c39d57f5b99be31dfd08cb5ab054d [2019-12-07 17:31:21,137 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:31:21,145 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:31:21,148 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:31:21,149 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:31:21,150 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:31:21,150 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_248038a7-d8dc-4ec6-a96f-6723cfe767e6/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_4.i [2019-12-07 17:31:21,190 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_248038a7-d8dc-4ec6-a96f-6723cfe767e6/bin/uautomizer/data/b7ddc4467/9595e1a897594c63972af6670cbff147/FLAGa079f9aff [2019-12-07 17:31:21,586 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:31:21,586 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_248038a7-d8dc-4ec6-a96f-6723cfe767e6/sv-benchmarks/c/floats-cdfpl/square_4.i [2019-12-07 17:31:21,590 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_248038a7-d8dc-4ec6-a96f-6723cfe767e6/bin/uautomizer/data/b7ddc4467/9595e1a897594c63972af6670cbff147/FLAGa079f9aff [2019-12-07 17:31:21,598 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_248038a7-d8dc-4ec6-a96f-6723cfe767e6/bin/uautomizer/data/b7ddc4467/9595e1a897594c63972af6670cbff147 [2019-12-07 17:31:21,600 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:31:21,601 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:31:21,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:31:21,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:31:21,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:31:21,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:31:21" (1/1) ... [2019-12-07 17:31:21,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dea57e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:21, skipping insertion in model container [2019-12-07 17:31:21,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:31:21" (1/1) ... [2019-12-07 17:31:21,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:31:21,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:31:21,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:31:21,731 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:31:21,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:31:21,786 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:31:21,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:21 WrapperNode [2019-12-07 17:31:21,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:31:21,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:31:21,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:31:21,787 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:31:21,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:21" (1/1) ... [2019-12-07 17:31:21,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:21" (1/1) ... [2019-12-07 17:31:21,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:31:21,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:31:21,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:31:21,808 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:31:21,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:21" (1/1) ... [2019-12-07 17:31:21,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:21" (1/1) ... [2019-12-07 17:31:21,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:21" (1/1) ... [2019-12-07 17:31:21,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:21" (1/1) ... [2019-12-07 17:31:21,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:21" (1/1) ... [2019-12-07 17:31:21,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:21" (1/1) ... [2019-12-07 17:31:21,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:21" (1/1) ... [2019-12-07 17:31:21,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:31:21,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:31:21,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:31:21,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:31:21,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_248038a7-d8dc-4ec6-a96f-6723cfe767e6/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 [2019-12-07 17:31:21,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:31:21,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:31:21,954 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:31:21,954 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 17:31:21,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:31:21 BoogieIcfgContainer [2019-12-07 17:31:21,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:31:21,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:31:21,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:31:21,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:31:21,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:31:21" (1/3) ... [2019-12-07 17:31:21,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd9fdcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:31:21, skipping insertion in model container [2019-12-07 17:31:21,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:21" (2/3) ... [2019-12-07 17:31:21,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd9fdcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:31:21, skipping insertion in model container [2019-12-07 17:31:21,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:31:21" (3/3) ... [2019-12-07 17:31:21,960 INFO L109 eAbstractionObserver]: Analyzing ICFG square_4.i [2019-12-07 17:31:21,967 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:31:21,972 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 17:31:21,980 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 17:31:21,995 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:31:21,995 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 17:31:21,995 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:31:21,995 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:31:21,996 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:31:21,996 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:31:21,996 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:31:21,996 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:31:22,005 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-12-07 17:31:22,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 17:31:22,009 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:31:22,009 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 17:31:22,010 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:31:22,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:31:22,013 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-12-07 17:31:22,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:31:22,019 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043813638] [2019-12-07 17:31:22,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:31:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:31:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:31:22,093 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:31:22,093 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 17:31:22,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:31:22 BoogieIcfgContainer [2019-12-07 17:31:22,104 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:31:22,104 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:31:22,104 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:31:22,104 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:31:22,104 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:31:21" (3/4) ... [2019-12-07 17:31:22,107 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 17:31:22,107 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:31:22,109 INFO L168 Benchmark]: Toolchain (without parser) took 506.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -126.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:31:22,109 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:31:22,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 184.98 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -154.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 17:31:22,110 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.24 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:31:22,110 INFO L168 Benchmark]: Boogie Preprocessor took 11.59 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:31:22,111 INFO L168 Benchmark]: RCFGBuilder took 134.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. [2019-12-07 17:31:22,111 INFO L168 Benchmark]: TraceAbstraction took 148.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:31:22,112 INFO L168 Benchmark]: Witness Printer took 3.07 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:31:22,114 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 184.98 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -154.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.24 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.59 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 134.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 148.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 3.07 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryArithmeticFLOAToperation at line 12. Possible FailurePath: [L6] float IN = __VERIFIER_nondet_float(); [L9] float x = IN; [L11-L12] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L14] COND TRUE !(result >= 0.0f && result < 1.39844f) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 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=8occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 17:31:23,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:31:23,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:31:23,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:31:23,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:31:23,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:31:23,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:31:23,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:31:23,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:31:23,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:31:23,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:31:23,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:31:23,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:31:23,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:31:23,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:31:23,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:31:23,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:31:23,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:31:23,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:31:23,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:31:23,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:31:23,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:31:23,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:31:23,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:31:23,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:31:23,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:31:23,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:31:23,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:31:23,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:31:23,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:31:23,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:31:23,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:31:23,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:31:23,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:31:23,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:31:23,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:31:23,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:31:23,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:31:23,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:31:23,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:31:23,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:31:23,535 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_248038a7-d8dc-4ec6-a96f-6723cfe767e6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 17:31:23,545 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:31:23,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:31:23,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:31:23,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:31:23,547 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:31:23,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:31:23,547 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:31:23,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:31:23,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:31:23,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 17:31:23,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:31:23,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 17:31:23,548 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 17:31:23,548 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 17:31:23,548 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:31:23,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:31:23,548 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:31:23,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 17:31:23,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:31:23,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:31:23,549 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:31:23,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:31:23,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:31:23,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:31:23,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:31:23,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 17:31:23,549 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 17:31:23,550 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 17:31:23,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 17:31:23,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:31:23,550 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 17:31:23,550 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_248038a7-d8dc-4ec6-a96f-6723cfe767e6/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 -> fddb92276d9c39d57f5b99be31dfd08cb5ab054d [2019-12-07 17:31:23,722 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:31:23,730 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:31:23,732 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:31:23,733 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:31:23,733 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:31:23,734 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_248038a7-d8dc-4ec6-a96f-6723cfe767e6/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_4.i [2019-12-07 17:31:23,772 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_248038a7-d8dc-4ec6-a96f-6723cfe767e6/bin/uautomizer/data/2106a2710/6cfcdca1303e4ad3bb5ec60111417a8c/FLAGdc20edc88 [2019-12-07 17:31:24,165 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:31:24,166 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_248038a7-d8dc-4ec6-a96f-6723cfe767e6/sv-benchmarks/c/floats-cdfpl/square_4.i [2019-12-07 17:31:24,169 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_248038a7-d8dc-4ec6-a96f-6723cfe767e6/bin/uautomizer/data/2106a2710/6cfcdca1303e4ad3bb5ec60111417a8c/FLAGdc20edc88 [2019-12-07 17:31:24,549 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_248038a7-d8dc-4ec6-a96f-6723cfe767e6/bin/uautomizer/data/2106a2710/6cfcdca1303e4ad3bb5ec60111417a8c [2019-12-07 17:31:24,551 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:31:24,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:31:24,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:31:24,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:31:24,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:31:24,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:31:24" (1/1) ... [2019-12-07 17:31:24,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41944eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:24, skipping insertion in model container [2019-12-07 17:31:24,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:31:24" (1/1) ... [2019-12-07 17:31:24,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:31:24,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:31:24,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:31:24,674 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:31:24,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:31:24,694 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:31:24,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:24 WrapperNode [2019-12-07 17:31:24,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:31:24,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:31:24,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:31:24,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:31:24,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:24" (1/1) ... [2019-12-07 17:31:24,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:24" (1/1) ... [2019-12-07 17:31:24,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:31:24,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:31:24,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:31:24,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:31:24,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:24" (1/1) ... [2019-12-07 17:31:24,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:24" (1/1) ... [2019-12-07 17:31:24,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:24" (1/1) ... [2019-12-07 17:31:24,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:24" (1/1) ... [2019-12-07 17:31:24,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:24" (1/1) ... [2019-12-07 17:31:24,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:24" (1/1) ... [2019-12-07 17:31:24,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:24" (1/1) ... [2019-12-07 17:31:24,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:31:24,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:31:24,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:31:24,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:31:24,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_248038a7-d8dc-4ec6-a96f-6723cfe767e6/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 [2019-12-07 17:31:24,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:31:24,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:31:26,951 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:31:26,951 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 17:31:26,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:31:26 BoogieIcfgContainer [2019-12-07 17:31:26,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:31:26,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:31:26,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:31:26,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:31:26,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:31:24" (1/3) ... [2019-12-07 17:31:26,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548cd51a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:31:26, skipping insertion in model container [2019-12-07 17:31:26,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:24" (2/3) ... [2019-12-07 17:31:26,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548cd51a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:31:26, skipping insertion in model container [2019-12-07 17:31:26,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:31:26" (3/3) ... [2019-12-07 17:31:26,957 INFO L109 eAbstractionObserver]: Analyzing ICFG square_4.i [2019-12-07 17:31:26,963 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:31:26,967 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 17:31:26,974 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 17:31:26,989 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:31:26,989 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 17:31:26,990 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:31:26,990 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:31:26,990 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:31:26,990 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:31:26,990 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:31:26,990 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:31:27,000 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-12-07 17:31:27,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 17:31:27,003 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:31:27,004 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 17:31:27,004 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:31:27,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:31:27,008 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2019-12-07 17:31:27,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:31:27,016 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957774067] [2019-12-07 17:31:27,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_248038a7-d8dc-4ec6-a96f-6723cfe767e6/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 [2019-12-07 17:41:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:41:41,398 WARN L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 17:41:41,402 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:41:43,499 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.lt ULTIMATE.start_main_~x~0 .cse0) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 8 24)) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) ULTIMATE.start_main_~x~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) c_ULTIMATE.start_main_~result~0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2019-12-07 17:41:45,569 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:41:55,970 WARN L838 $PredicateComparison]: unable to prove that (or (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (_ +zero 8 24))) (fp.lt ULTIMATE.start_main_~x~0 .cse0)))) (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 34961.0 25000.0)))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 8 24)) (fp.lt ULTIMATE.start_main_~x~0 .cse1))))) is different from false [2019-12-07 17:41:58,025 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (_ +zero 8 24))) (fp.lt ULTIMATE.start_main_~x~0 .cse0)))) (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 34961.0 25000.0)))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 8 24)) (fp.lt ULTIMATE.start_main_~x~0 .cse1))))) is different from true [2019-12-07 17:41:58,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:41:58,028 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 17:41:58,058 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:42:00,117 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~x~0_4 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt v_ULTIMATE.start_main_~x~0_4 .cse0)) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) v_ULTIMATE.start_main_~x~0_4)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4)) (_ +zero 8 24)) (not (fp.geq v_ULTIMATE.start_main_~x~0_4 (_ +zero 8 24)))))) (forall ((v_ULTIMATE.start_main_~x~0_4 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (fp.lt (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) v_ULTIMATE.start_main_~x~0_4)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4)) ((_ to_fp 8 24) c_currentRoundingMode (/ 34961.0 25000.0))) (not (fp.lt v_ULTIMATE.start_main_~x~0_4 .cse1)) (not (fp.geq v_ULTIMATE.start_main_~x~0_4 (_ +zero 8 24))))))) is different from false [2019-12-07 17:42:02,258 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~x~0_4 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt v_ULTIMATE.start_main_~x~0_4 .cse0)) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) v_ULTIMATE.start_main_~x~0_4)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4)) (_ +zero 8 24)) (not (fp.geq v_ULTIMATE.start_main_~x~0_4 (_ +zero 8 24)))))) (forall ((v_ULTIMATE.start_main_~x~0_4 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (fp.lt (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) v_ULTIMATE.start_main_~x~0_4)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4)) ((_ to_fp 8 24) c_currentRoundingMode (/ 34961.0 25000.0))) (not (fp.lt v_ULTIMATE.start_main_~x~0_4 .cse1)) (not (fp.geq v_ULTIMATE.start_main_~x~0_4 (_ +zero 8 24))))))) is different from true [2019-12-07 17:42:02,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:42:02,259 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957774067] [2019-12-07 17:42:02,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:42:02,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2019-12-07 17:42:02,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255300398] [2019-12-07 17:42:02,267 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 17:42:02,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 17:42:02,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 17:42:02,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=8, Unknown=5, NotChecked=18, Total=42 [2019-12-07 17:42:02,285 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 7 states. [2019-12-07 17:42:04,357 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~x~0_4 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt v_ULTIMATE.start_main_~x~0_4 .cse0)) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) v_ULTIMATE.start_main_~x~0_4)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4)) (_ +zero 8 24)) (not (fp.geq v_ULTIMATE.start_main_~x~0_4 (_ +zero 8 24)))))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~x~0_4 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (fp.lt (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) v_ULTIMATE.start_main_~x~0_4)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4)) ((_ to_fp 8 24) c_currentRoundingMode (/ 34961.0 25000.0))) (not (fp.lt v_ULTIMATE.start_main_~x~0_4 .cse1)) (not (fp.geq v_ULTIMATE.start_main_~x~0_4 (_ +zero 8 24))))))) is different from false [2019-12-07 17:42:06,498 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~x~0_4 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt v_ULTIMATE.start_main_~x~0_4 .cse0)) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) v_ULTIMATE.start_main_~x~0_4)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4)) (_ +zero 8 24)) (not (fp.geq v_ULTIMATE.start_main_~x~0_4 (_ +zero 8 24)))))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~x~0_4 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (fp.lt (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) v_ULTIMATE.start_main_~x~0_4)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4) v_ULTIMATE.start_main_~x~0_4)) ((_ to_fp 8 24) c_currentRoundingMode (/ 34961.0 25000.0))) (not (fp.lt v_ULTIMATE.start_main_~x~0_4 .cse1)) (not (fp.geq v_ULTIMATE.start_main_~x~0_4 (_ +zero 8 24))))))) is different from true [2019-12-07 17:42:08,602 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.lt ULTIMATE.start_main_~x~0 .cse0) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 8 24)) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) ULTIMATE.start_main_~x~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) c_ULTIMATE.start_main_~result~0)))) (fp.lt c_ULTIMATE.start_main_~result~0 ((_ to_fp 8 24) c_currentRoundingMode (/ 34961.0 25000.0))) (fp.geq c_ULTIMATE.start_main_~result~0 (_ +zero 8 24)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2019-12-07 17:42:08,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:42:08,611 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2019-12-07 17:42:08,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 17:42:08,612 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 4 [2019-12-07 17:42:08,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:42:08,618 INFO L225 Difference]: With dead ends: 13 [2019-12-07 17:42:08,618 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 17:42:08,620 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=15, Invalid=9, Unknown=8, NotChecked=40, Total=72 [2019-12-07 17:42:08,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 17:42:08,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 17:42:08,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 17:42:08,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 17:42:08,640 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-12-07 17:42:08,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:42:08,640 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:42:08,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 17:42:08,641 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 17:42:08,641 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 17:42:08,842 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 17:42:08,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 17:42:08,893 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 17:42:08,893 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-12-07 17:42:08,893 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 17:42:08,893 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 17:42:08,893 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2019-12-07 17:42:08,894 INFO L249 CegarLoopResult]: At program point L17(lines 4 18) the Hoare annotation is: true [2019-12-07 17:42:08,894 INFO L246 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2019-12-07 17:42:08,894 INFO L246 CegarLoopResult]: For program point L14(lines 14 15) no Hoare annotation was computed. [2019-12-07 17:42:08,894 INFO L246 CegarLoopResult]: For program point L14-2(lines 14 15) no Hoare annotation was computed. [2019-12-07 17:42:08,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:42:08 BoogieIcfgContainer [2019-12-07 17:42:08,901 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:42:08,902 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:42:08,902 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:42:08,902 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:42:08,902 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:31:26" (3/4) ... [2019-12-07 17:42:08,905 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 17:42:08,913 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 17:42:08,913 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 17:42:08,913 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 17:42:08,937 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_248038a7-d8dc-4ec6-a96f-6723cfe767e6/bin/uautomizer/witness.graphml [2019-12-07 17:42:08,937 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:42:08,938 INFO L168 Benchmark]: Toolchain (without parser) took 644386.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 952.4 MB in the beginning and 1.0 GB in the end (delta: -86.2 MB). Peak memory consumption was 29.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:42:08,939 INFO L168 Benchmark]: CDTParser took 0.14 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. [2019-12-07 17:42:08,939 INFO L168 Benchmark]: CACSL2BoogieTranslator took 141.38 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:42:08,940 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.58 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -169.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-12-07 17:42:08,940 INFO L168 Benchmark]: Boogie Preprocessor took 16.36 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:42:08,940 INFO L168 Benchmark]: RCFGBuilder took 2192.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2019-12-07 17:42:08,941 INFO L168 Benchmark]: TraceAbstraction took 641948.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 45.8 MB). Peak memory consumption was 45.8 MB. Max. memory is 11.5 GB. [2019-12-07 17:42:08,941 INFO L168 Benchmark]: Witness Printer took 35.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:42:08,943 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 141.38 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 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 48.58 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -169.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.36 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2192.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 641948.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 45.8 MB). Peak memory consumption was 45.8 MB. Max. memory is 11.5 GB. * Witness Printer took 35.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: 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: 4]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: SAFE, OverallTime: 641.8s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 4 SDtfs, 0 SDslu, 9 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 613.7s SatisfiabilityAnalysisTime, 21.5s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 3 QuantifiedInterpolants, 1062 SizeOfPredicates, 4 NumberOfNonLiveVariables, 9 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...