./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/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: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/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 0.1.23-635dfa2 [2018-12-01 08:14:57,110 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 08:14:57,111 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 08:14:57,117 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 08:14:57,117 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 08:14:57,118 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 08:14:57,118 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 08:14:57,119 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 08:14:57,120 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 08:14:57,120 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 08:14:57,121 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 08:14:57,121 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 08:14:57,121 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 08:14:57,122 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 08:14:57,122 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 08:14:57,122 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 08:14:57,123 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 08:14:57,124 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 08:14:57,124 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 08:14:57,125 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 08:14:57,126 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 08:14:57,126 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 08:14:57,127 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 08:14:57,127 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 08:14:57,128 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 08:14:57,128 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 08:14:57,129 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 08:14:57,129 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 08:14:57,129 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 08:14:57,130 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 08:14:57,130 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 08:14:57,130 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 08:14:57,130 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 08:14:57,131 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 08:14:57,131 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 08:14:57,131 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 08:14:57,131 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-01 08:14:57,138 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 08:14:57,138 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 08:14:57,139 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 08:14:57,139 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 08:14:57,139 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 08:14:57,139 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 08:14:57,140 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 08:14:57,140 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 08:14:57,140 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 08:14:57,140 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 08:14:57,140 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 08:14:57,140 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 08:14:57,140 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 08:14:57,140 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 08:14:57,140 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 08:14:57,140 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 08:14:57,140 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 08:14:57,141 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 08:14:57,141 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 08:14:57,141 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 08:14:57,141 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 08:14:57,141 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 08:14:57,141 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 08:14:57,141 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 08:14:57,141 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 08:14:57,141 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 08:14:57,141 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 08:14:57,141 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-01 08:14:57,142 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 08:14:57,142 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-01 08:14:57,142 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/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 [2018-12-01 08:14:57,159 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 08:14:57,166 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 08:14:57,168 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 08:14:57,168 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 08:14:57,169 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 08:14:57,169 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/uautomizer/../../sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-12-01 08:14:57,204 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/uautomizer/data/02c17606e/cae4b8fa48b14701b4eafe006f4541e6/FLAG86c6c91de [2018-12-01 08:14:57,568 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 08:14:57,568 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-12-01 08:14:57,572 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/uautomizer/data/02c17606e/cae4b8fa48b14701b4eafe006f4541e6/FLAG86c6c91de [2018-12-01 08:14:57,951 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/uautomizer/data/02c17606e/cae4b8fa48b14701b4eafe006f4541e6 [2018-12-01 08:14:57,954 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 08:14:57,955 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 08:14:57,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 08:14:57,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 08:14:57,958 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 08:14:57,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 08:14:57" (1/1) ... [2018-12-01 08:14:57,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9b53f50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:14:57, skipping insertion in model container [2018-12-01 08:14:57,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 08:14:57" (1/1) ... [2018-12-01 08:14:57,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 08:14:57,976 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 08:14:58,095 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 08:14:58,097 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 08:14:58,105 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 08:14:58,113 INFO L195 MainTranslator]: Completed translation [2018-12-01 08:14:58,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:14:58 WrapperNode [2018-12-01 08:14:58,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 08:14:58,113 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 08:14:58,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 08:14:58,113 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 08:14:58,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:14:58" (1/1) ... [2018-12-01 08:14:58,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:14:58" (1/1) ... [2018-12-01 08:14:58,124 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 08:14:58,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 08:14:58,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 08:14:58,125 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 08:14:58,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:14:58" (1/1) ... [2018-12-01 08:14:58,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:14:58" (1/1) ... [2018-12-01 08:14:58,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:14:58" (1/1) ... [2018-12-01 08:14:58,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:14:58" (1/1) ... [2018-12-01 08:14:58,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:14:58" (1/1) ... [2018-12-01 08:14:58,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:14:58" (1/1) ... [2018-12-01 08:14:58,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:14:58" (1/1) ... [2018-12-01 08:14:58,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 08:14:58,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 08:14:58,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 08:14:58,136 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 08:14:58,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:14:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/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 [2018-12-01 08:14:58,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 08:14:58,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 08:14:58,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 08:14:58,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 08:14:58,197 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 08:14:58,197 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 08:14:58,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-01 08:14:58,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-01 08:14:58,271 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 08:14:58,271 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-01 08:14:58,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 08:14:58 BoogieIcfgContainer [2018-12-01 08:14:58,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 08:14:58,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 08:14:58,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 08:14:58,274 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 08:14:58,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 08:14:57" (1/3) ... [2018-12-01 08:14:58,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67766d66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 08:14:58, skipping insertion in model container [2018-12-01 08:14:58,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:14:58" (2/3) ... [2018-12-01 08:14:58,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67766d66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 08:14:58, skipping insertion in model container [2018-12-01 08:14:58,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 08:14:58" (3/3) ... [2018-12-01 08:14:58,276 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div_true-unreach-call.i [2018-12-01 08:14:58,281 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 08:14:58,285 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 08:14:58,293 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 08:14:58,309 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 08:14:58,310 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 08:14:58,310 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 08:14:58,310 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 08:14:58,310 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 08:14:58,310 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 08:14:58,310 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 08:14:58,310 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 08:14:58,310 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 08:14:58,320 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-12-01 08:14:58,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-01 08:14:58,323 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 08:14:58,323 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 08:14:58,324 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 08:14:58,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 08:14:58,328 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2018-12-01 08:14:58,329 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 08:14:58,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 08:14:58,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 08:14:58,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 08:14:58,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 08:14:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 08:14:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 08:14:58,389 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-01 08:14:58,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 08:14:58 BoogieIcfgContainer [2018-12-01 08:14:58,401 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 08:14:58,401 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 08:14:58,401 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 08:14:58,401 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 08:14:58,402 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 08:14:58" (3/4) ... [2018-12-01 08:14:58,404 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-01 08:14:58,404 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 08:14:58,404 INFO L168 Benchmark]: Toolchain (without parser) took 450.40 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 86.5 MB). Free memory was 956.0 MB in the beginning and 1.1 GB in the end (delta: -103.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 08:14:58,405 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 08:14:58,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.98 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-01 08:14:58,406 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.11 ms. Allocated memory is still 1.0 GB. Free memory is still 945.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 08:14:58,406 INFO L168 Benchmark]: Boogie Preprocessor took 11.52 ms. Allocated memory is still 1.0 GB. Free memory is still 945.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 08:14:58,407 INFO L168 Benchmark]: RCFGBuilder took 135.51 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 86.5 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -130.5 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2018-12-01 08:14:58,407 INFO L168 Benchmark]: TraceAbstraction took 129.02 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. [2018-12-01 08:14:58,408 INFO L168 Benchmark]: Witness Printer took 2.60 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. [2018-12-01 08:14:58,409 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 157.98 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.2 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 11.11 ms. Allocated memory is still 1.0 GB. Free memory is still 945.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.52 ms. Allocated memory is still 1.0 GB. Free memory is still 945.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 135.51 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 86.5 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -130.5 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 129.02 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 2.60 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: 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; VAL [x=1] [L12] COND FALSE !(x1 != x) VAL [x=1] [L18] CALL __VERIFIER_assert(x == 0) VAL [\old(cond)=0] [L2] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L2] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. UNSAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: 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 0.1.23-635dfa2 [2018-12-01 08:14:59,636 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 08:14:59,637 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 08:14:59,645 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 08:14:59,645 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 08:14:59,645 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 08:14:59,646 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 08:14:59,647 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 08:14:59,648 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 08:14:59,649 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 08:14:59,649 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 08:14:59,650 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 08:14:59,650 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 08:14:59,651 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 08:14:59,652 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 08:14:59,652 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 08:14:59,653 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 08:14:59,654 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 08:14:59,655 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 08:14:59,656 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 08:14:59,657 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 08:14:59,658 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 08:14:59,659 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 08:14:59,659 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 08:14:59,660 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 08:14:59,660 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 08:14:59,661 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 08:14:59,661 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 08:14:59,662 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 08:14:59,662 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 08:14:59,662 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 08:14:59,663 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 08:14:59,663 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 08:14:59,663 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 08:14:59,663 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 08:14:59,664 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 08:14:59,664 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-01 08:14:59,674 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 08:14:59,674 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 08:14:59,675 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 08:14:59,675 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 08:14:59,675 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 08:14:59,675 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 08:14:59,675 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 08:14:59,676 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 08:14:59,676 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 08:14:59,676 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 08:14:59,676 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 08:14:59,676 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 08:14:59,676 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 08:14:59,676 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 08:14:59,677 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-01 08:14:59,677 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-01 08:14:59,677 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 08:14:59,677 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 08:14:59,677 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 08:14:59,677 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 08:14:59,677 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 08:14:59,677 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 08:14:59,678 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 08:14:59,678 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 08:14:59,678 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 08:14:59,678 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 08:14:59,678 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 08:14:59,678 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 08:14:59,678 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-01 08:14:59,679 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 08:14:59,679 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-01 08:14:59,679 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-01 08:14:59,679 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/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 [2018-12-01 08:14:59,702 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 08:14:59,711 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 08:14:59,714 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 08:14:59,715 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 08:14:59,715 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 08:14:59,716 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/uautomizer/../../sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-12-01 08:14:59,754 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/uautomizer/data/90fcdfa8a/b64433cc9fcf4447b99b9cccb25fce82/FLAGccea1f522 [2018-12-01 08:15:00,047 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 08:15:00,048 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/sv-benchmarks/c/floats-esbmc-regression/Float_div_true-unreach-call.i [2018-12-01 08:15:00,051 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/uautomizer/data/90fcdfa8a/b64433cc9fcf4447b99b9cccb25fce82/FLAGccea1f522 [2018-12-01 08:15:00,485 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/uautomizer/data/90fcdfa8a/b64433cc9fcf4447b99b9cccb25fce82 [2018-12-01 08:15:00,488 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 08:15:00,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 08:15:00,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 08:15:00,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 08:15:00,494 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 08:15:00,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 08:15:00" (1/1) ... [2018-12-01 08:15:00,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a0bb1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:15:00, skipping insertion in model container [2018-12-01 08:15:00,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 08:15:00" (1/1) ... [2018-12-01 08:15:00,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 08:15:00,519 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 08:15:00,607 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 08:15:00,611 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 08:15:00,620 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 08:15:00,629 INFO L195 MainTranslator]: Completed translation [2018-12-01 08:15:00,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:15:00 WrapperNode [2018-12-01 08:15:00,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 08:15:00,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 08:15:00,630 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 08:15:00,630 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 08:15:00,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:15:00" (1/1) ... [2018-12-01 08:15:00,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:15:00" (1/1) ... [2018-12-01 08:15:00,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 08:15:00,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 08:15:00,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 08:15:00,643 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 08:15:00,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:15:00" (1/1) ... [2018-12-01 08:15:00,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:15:00" (1/1) ... [2018-12-01 08:15:00,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:15:00" (1/1) ... [2018-12-01 08:15:00,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:15:00" (1/1) ... [2018-12-01 08:15:00,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:15:00" (1/1) ... [2018-12-01 08:15:00,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:15:00" (1/1) ... [2018-12-01 08:15:00,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:15:00" (1/1) ... [2018-12-01 08:15:00,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 08:15:00,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 08:15:00,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 08:15:00,658 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 08:15:00,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:15:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/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 [2018-12-01 08:15:00,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 08:15:00,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 08:15:00,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 08:15:00,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 08:15:00,722 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 08:15:00,722 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 08:15:00,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-01 08:15:00,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-01 08:15:01,156 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 08:15:01,156 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-01 08:15:01,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 08:15:01 BoogieIcfgContainer [2018-12-01 08:15:01,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 08:15:01,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 08:15:01,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 08:15:01,159 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 08:15:01,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 08:15:00" (1/3) ... [2018-12-01 08:15:01,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7de169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 08:15:01, skipping insertion in model container [2018-12-01 08:15:01,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:15:00" (2/3) ... [2018-12-01 08:15:01,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7de169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 08:15:01, skipping insertion in model container [2018-12-01 08:15:01,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 08:15:01" (3/3) ... [2018-12-01 08:15:01,161 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div_true-unreach-call.i [2018-12-01 08:15:01,166 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 08:15:01,170 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 08:15:01,178 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 08:15:01,194 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 08:15:01,195 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 08:15:01,195 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 08:15:01,195 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 08:15:01,195 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 08:15:01,195 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 08:15:01,195 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 08:15:01,195 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 08:15:01,195 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 08:15:01,205 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-12-01 08:15:01,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-01 08:15:01,208 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 08:15:01,209 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 08:15:01,210 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 08:15:01,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 08:15:01,213 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2018-12-01 08:15:01,215 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 08:15:01,216 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/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 [2018-12-01 08:15:01,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 08:15:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 08:15:01,278 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 08:15:01,878 WARN L180 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-12-01 08:15:01,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 08:15:01,885 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 08:15:01,893 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 08:15:01,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-01 08:15:01,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-01 08:15:01,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-01 08:15:01,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 08:15:01,905 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2018-12-01 08:15:02,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 08:15:02,073 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2018-12-01 08:15:02,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-01 08:15:02,075 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-01 08:15:02,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 08:15:02,079 INFO L225 Difference]: With dead ends: 31 [2018-12-01 08:15:02,080 INFO L226 Difference]: Without dead ends: 12 [2018-12-01 08:15:02,081 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 08:15:02,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-01 08:15:02,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-01 08:15:02,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-01 08:15:02,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-12-01 08:15:02,102 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-12-01 08:15:02,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 08:15:02,102 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-12-01 08:15:02,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-01 08:15:02,103 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-12-01 08:15:02,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-01 08:15:02,103 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 08:15:02,103 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 08:15:02,103 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 08:15:02,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 08:15:02,104 INFO L82 PathProgramCache]: Analyzing trace with hash -429188558, now seen corresponding path program 1 times [2018-12-01 08:15:02,104 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 08:15:02,104 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/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 [2018-12-01 08:15:02,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 08:15:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 08:15:02,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 08:15:02,841 WARN L180 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-12-01 08:15:02,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 08:15:02,844 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-01 08:15:05,436 WARN L180 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-12-01 08:15:05,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 08:15:05,459 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 08:15:05,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-12-01 08:15:05,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 08:15:05,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 08:15:05,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-12-01 08:15:05,460 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 6 states. [2018-12-01 08:15:08,933 WARN L180 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 11 [2018-12-01 08:15:12,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 08:15:12,766 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-12-01 08:15:12,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 08:15:12,790 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-12-01 08:15:12,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 08:15:12,791 INFO L225 Difference]: With dead ends: 20 [2018-12-01 08:15:12,791 INFO L226 Difference]: Without dead ends: 15 [2018-12-01 08:15:12,791 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-12-01 08:15:12,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-12-01 08:15:12,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-12-01 08:15:12,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-01 08:15:12,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-12-01 08:15:12,795 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2018-12-01 08:15:12,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 08:15:12,795 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-12-01 08:15:12,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 08:15:12,795 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-12-01 08:15:12,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-01 08:15:12,795 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 08:15:12,795 INFO L402 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 08:15:12,796 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 08:15:12,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 08:15:12,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1090549245, now seen corresponding path program 2 times [2018-12-01 08:15:12,796 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 08:15:12,796 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/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 [2018-12-01 08:15:12,800 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-01 08:15:12,986 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 08:15:12,986 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 08:15:12,999 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 08:15:13,741 WARN L180 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-12-01 08:15:13,745 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 08:15:13,745 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-01 08:15:22,834 WARN L180 SmtUtils]: Spent 3.18 s on a formula simplification that was a NOOP. DAG size: 11 [2018-12-01 08:15:25,586 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~x1~0 .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 [2018-12-01 08:15:27,661 WARN L832 $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_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 [2018-12-01 08:15:29,729 WARN L854 $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_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 [2018-12-01 08:15:31,829 WARN L832 $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_main_~x1~0 .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))))) is different from false [2018-12-01 08:15:33,923 WARN L854 $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_main_~x1~0 .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))))) is different from true [2018-12-01 08:15:33,933 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2018-12-01 08:15:33,944 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 08:15:33,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 15 [2018-12-01 08:15:33,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-01 08:15:33,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-01 08:15:33,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=105, Unknown=5, NotChecked=66, Total=210 [2018-12-01 08:15:33,945 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 15 states. [2018-12-01 08:15:39,549 WARN L180 SmtUtils]: Spent 3.75 s on a formula simplification. DAG size of input: 24 DAG size of output: 12 [2018-12-01 08:15:44,024 WARN L180 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 24 DAG size of output: 13 [2018-12-01 08:15:47,605 WARN L180 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 24 DAG size of output: 14 [2018-12-01 08:15:59,725 WARN L180 SmtUtils]: Spent 4.94 s on a formula simplification that was a NOOP. DAG size: 14 [2018-12-01 08:16:01,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 08:16:01,949 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-12-01 08:16:01,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-01 08:16:01,949 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 14 [2018-12-01 08:16:01,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 08:16:01,949 INFO L225 Difference]: With dead ends: 25 [2018-12-01 08:16:01,949 INFO L226 Difference]: Without dead ends: 17 [2018-12-01 08:16:01,950 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 43.0s TimeCoverageRelationStatistics Valid=63, Invalid=250, Unknown=5, NotChecked=102, Total=420 [2018-12-01 08:16:01,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-12-01 08:16:01,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-12-01 08:16:01,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-12-01 08:16:01,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-12-01 08:16:01,953 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-12-01 08:16:01,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 08:16:01,953 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-12-01 08:16:01,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-12-01 08:16:01,954 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-12-01 08:16:01,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-01 08:16:01,954 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 08:16:01,954 INFO L402 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 08:16:01,954 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 08:16:01,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 08:16:01,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1183011997, now seen corresponding path program 3 times [2018-12-01 08:16:01,955 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 08:16:01,955 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/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 [2018-12-01 08:16:01,958 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-12-01 08:16:02,160 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-01 08:16:02,160 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 08:16:02,173 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 08:16:02,989 WARN L180 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-12-01 08:16:11,679 WARN L180 SmtUtils]: Spent 5.46 s on a formula simplification that was a NOOP. DAG size: 15 [2018-12-01 08:16:13,735 WARN L832 $PredicateComparison]: unable to prove that (and (exists ((v_main_~x~0_14 (_ FloatingPoint 8 24))) (and (not (fp.eq c_main_~x~0 v_main_~x~0_14)) (= c_main_~x~0 (fp.div roundNearestTiesToEven v_main_~x~0_14 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))))) (fp.eq (fp.div roundNearestTiesToEven c_main_~x~0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0))) c_main_~x~0)) is different from false [2018-12-01 08:16:24,726 WARN L832 $PredicateComparison]: unable to prove that (or (and (= (bvadd |c___VERIFIER_assert_#in~cond| (_ bv4294967295 32)) (_ bv0 32)) (exists ((v_main_~x~0_14 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_14 .cse1))) (and (not (fp.eq .cse0 v_main_~x~0_14)) (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))))) (and (exists ((v_prenex_2 (_ FloatingPoint 8 24))) (let ((.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse2 (fp.div roundNearestTiesToEven v_prenex_2 .cse3))) (and (not (fp.eq .cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse2 .cse3) .cse2) (not (fp.eq .cse2 v_prenex_2)))))) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) is different from false [2018-12-01 08:16:48,084 WARN L180 SmtUtils]: Spent 11.54 s on a formula simplification that was a NOOP. DAG size: 22 [2018-12-01 08:16:54,244 WARN L832 $PredicateComparison]: unable to prove that (exists ((v_prenex_2 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_prenex_2 .cse1))) (and (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 v_prenex_2)))))) is different from false [2018-12-01 08:16:56,288 WARN L854 $PredicateComparison]: unable to prove that (exists ((v_prenex_2 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_prenex_2 .cse1))) (and (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 v_prenex_2)))))) is different from true [2018-12-01 08:16:56,290 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-12-01 08:16:56,290 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 08:16:56,300 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 08:16:56,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-01 08:16:56,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-01 08:16:56,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-01 08:16:56,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=11, Unknown=7, NotChecked=24, Total=56 [2018-12-01 08:16:56,302 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 8 states. [2018-12-01 08:17:03,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 08:17:03,082 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-12-01 08:17:03,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-01 08:17:03,135 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-12-01 08:17:03,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 08:17:03,135 INFO L225 Difference]: With dead ends: 17 [2018-12-01 08:17:03,135 INFO L226 Difference]: Without dead ends: 0 [2018-12-01 08:17:03,136 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.8s TimeCoverageRelationStatistics Valid=14, Invalid=11, Unknown=7, NotChecked=24, Total=56 [2018-12-01 08:17:03,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-01 08:17:03,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-01 08:17:03,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-01 08:17:03,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-01 08:17:03,136 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2018-12-01 08:17:03,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 08:17:03,137 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 08:17:03,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-01 08:17:03,137 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-01 08:17:03,137 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-01 08:17:03,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-01 08:17:03,431 WARN L180 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 1 [2018-12-01 08:17:37,963 WARN L180 SmtUtils]: Spent 34.53 s on a formula simplification that was a NOOP. DAG size: 25 [2018-12-01 08:17:45,570 WARN L180 SmtUtils]: Spent 7.61 s on a formula simplification that was a NOOP. DAG size: 15 [2018-12-01 08:17:45,571 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-01 08:17:45,571 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-01 08:17:45,571 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-01 08:17:45,572 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-01 08:17:45,572 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-01 08:17:45,572 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-01 08:17:45,572 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 7 20) the Hoare annotation is: true [2018-12-01 08:17:45,572 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 7 20) no Hoare annotation was computed. [2018-12-01 08:17:45,572 INFO L448 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-12-01 08:17:45,572 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 7 20) no Hoare annotation was computed. [2018-12-01 08:17:45,572 INFO L444 ceAbstractionStarter]: At program point L12-2(lines 12 16) the Hoare annotation is: (and (exists ((v_main_~x~0_14 (_ FloatingPoint 8 24))) (and (not (fp.eq main_~x~0 v_main_~x~0_14)) (= main_~x~0 (fp.div roundNearestTiesToEven v_main_~x~0_14 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))))) (= main_~x1~0 (fp.div roundNearestTiesToEven main_~x~0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0))))) [2018-12-01 08:17:45,573 INFO L444 ceAbstractionStarter]: At program point L12-3(lines 12 16) the Hoare annotation is: (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (or (and (exists ((v_main_~x~0_14 (_ FloatingPoint 8 24))) (and (not (fp.eq main_~x~0 v_main_~x~0_14)) (= main_~x~0 (fp.div roundNearestTiesToEven v_main_~x~0_14 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))))) (fp.eq (fp.div roundNearestTiesToEven main_~x~0 .cse0) main_~x~0)) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (and (fp.eq main_~x~0 .cse1) (or (not (fp.eq (fp.div roundNearestTiesToEven main_~x1~0 .cse0) main_~x1~0)) (fp.eq main_~x1~0 .cse1)))))) [2018-12-01 08:17:45,573 INFO L448 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2018-12-01 08:17:45,573 INFO L448 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2018-12-01 08:17:45,573 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2018-12-01 08:17:45,573 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2018-12-01 08:17:45,573 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2018-12-01 08:17:45,573 INFO L448 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2018-12-01 08:17:45,577 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-12-01 08:17:45,580 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 08:17:45,580 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-12-01 08:17:45,580 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 08:17:45,580 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 08:17:45,580 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 08:17:45,583 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-12-01 08:17:45,583 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 08:17:45,583 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-12-01 08:17:45,583 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 08:17:45,583 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 08:17:45,584 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 08:17:45,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 08:17:45 BoogieIcfgContainer [2018-12-01 08:17:45,585 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 08:17:45,586 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 08:17:45,586 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 08:17:45,586 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 08:17:45,586 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 08:15:01" (3/4) ... [2018-12-01 08:17:45,589 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-01 08:17:45,593 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-01 08:17:45,594 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-01 08:17:45,594 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-12-01 08:17:45,596 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-01 08:17:45,596 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-01 08:17:45,596 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-01 08:17:45,614 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists v_main_~x~0_14 : C_FLOAT :: !~fp.eq~FLOAT(x, v_main_~x~0_14) && x == ~fp.div~FLOAT(~roundNearestTiesToEven, v_main_~x~0_14, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2))) && x1 == ~fp.div~FLOAT(~roundNearestTiesToEven, x, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2)) [2018-12-01 08:17:45,620 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_6642e0ed-8d18-41d8-9b48-7d9aece301c3/bin-2019/uautomizer/witness.graphml [2018-12-01 08:17:45,620 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 08:17:45,620 INFO L168 Benchmark]: Toolchain (without parser) took 165131.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 943.3 MB in the beginning and 962.0 MB in the end (delta: -18.7 MB). Peak memory consumption was 106.6 MB. Max. memory is 11.5 GB. [2018-12-01 08:17:45,621 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 08:17:45,621 INFO L168 Benchmark]: CACSL2BoogieTranslator took 138.71 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-01 08:17:45,621 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.35 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 08:17:45,621 INFO L168 Benchmark]: Boogie Preprocessor took 14.64 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-01 08:17:45,622 INFO L168 Benchmark]: RCFGBuilder took 498.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 927.2 MB in the beginning and 1.1 GB in the end (delta: -169.0 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-12-01 08:17:45,622 INFO L168 Benchmark]: TraceAbstraction took 164428.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 962.0 MB in the end (delta: 134.2 MB). Peak memory consumption was 134.2 MB. Max. memory is 11.5 GB. [2018-12-01 08:17:45,622 INFO L168 Benchmark]: Witness Printer took 34.21 ms. Allocated memory is still 1.2 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 08:17:45,624 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 138.71 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 932.6 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 13.35 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.64 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 498.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 927.2 MB in the beginning and 1.1 GB in the end (delta: -169.0 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 164428.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 962.0 MB in the end (delta: 134.2 MB). Peak memory consumption was 134.2 MB. Max. memory is 11.5 GB. * Witness Printer took 34.21 ms. Allocated memory is still 1.2 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,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_main_~x~0_14,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 Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,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_main_~x~0_14,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 * 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: 12]: Loop Invariant [2018-12-01 08:17:45,627 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-12-01 08:17:45,627 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 08:17:45,627 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-12-01 08:17:45,627 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 08:17:45,628 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 08:17:45,628 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 08:17:45,628 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-12-01 08:17:45,628 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 08:17:45,628 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2018-12-01 08:17:45,628 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 08:17:45,628 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-01 08:17:45,628 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (\exists v_main_~x~0_14 : C_FLOAT :: !~fp.eq~FLOAT(x, v_main_~x~0_14) && x == ~fp.div~FLOAT(~roundNearestTiesToEven, v_main_~x~0_14, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2))) && x1 == ~fp.div~FLOAT(~roundNearestTiesToEven, x, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 164.3s OverallTime, 4 OverallIterations, 6 TraceHistogramMax, 42.3s AutomataDifference, 0.0s DeadEndRemovalTime, 42.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 40 SDtfs, 2 SDslu, 120 SDs, 0 SdLazy, 87 SolverSat, 11 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 17.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 43 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 85.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 19 NumberOfFragments, 73 HoareAnnotationTreeSize, 11 FomulaSimplifications, 284 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 181 FormulaSimplificationTreeSizeReductionInter, 42.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 78.9s InterpolantComputationTime, 51 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 70 ConstructedInterpolants, 5 QuantifiedInterpolants, 8193 SizeOfPredicates, 13 NumberOfNonLiveVariables, 103 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 21/43 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...