./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_8.i -s /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 847ec304644081d839ca7e80209d45b391ec9937 ........................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_8.i -s /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 847ec304644081d839ca7e80209d45b391ec9937 ........................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 06:59:50,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 06:59:50,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 06:59:50,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 06:59:50,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 06:59:50,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 06:59:50,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 06:59:50,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 06:59:50,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 06:59:50,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 06:59:50,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 06:59:50,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 06:59:50,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 06:59:50,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 06:59:50,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 06:59:50,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 06:59:50,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 06:59:50,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 06:59:50,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 06:59:50,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 06:59:50,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 06:59:50,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 06:59:50,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 06:59:50,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 06:59:50,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 06:59:50,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 06:59:50,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 06:59:50,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 06:59:50,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 06:59:50,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 06:59:50,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 06:59:50,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 06:59:50,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 06:59:50,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 06:59:50,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 06:59:50,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 06:59:50,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 06:59:50,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 06:59:50,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 06:59:50,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 06:59:50,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 06:59:50,465 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 06:59:50,494 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 06:59:50,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 06:59:50,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 06:59:50,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 06:59:50,495 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 06:59:50,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 06:59:50,496 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 06:59:50,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 06:59:50,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 06:59:50,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 06:59:50,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 06:59:50,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 06:59:50,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 06:59:50,497 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 06:59:50,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 06:59:50,497 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 06:59:50,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 06:59:50,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 06:59:50,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 06:59:50,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 06:59:50,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 06:59:50,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 06:59:50,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 06:59:50,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 06:59:50,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 06:59:50,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 06:59:50,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 06:59:50,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 06:59:50,500 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 847ec304644081d839ca7e80209d45b391ec9937 [2019-11-20 06:59:50,658 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 06:59:50,669 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 06:59:50,675 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 06:59:50,677 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 06:59:50,677 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 06:59:50,678 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_8.i [2019-11-20 06:59:50,736 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer/data/183ac7d79/27eff6d6479246a583d6a286e3f15826/FLAGc33837437 [2019-11-20 06:59:51,139 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 06:59:51,140 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/sv-benchmarks/c/floats-cdfpl/square_8.i [2019-11-20 06:59:51,147 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer/data/183ac7d79/27eff6d6479246a583d6a286e3f15826/FLAGc33837437 [2019-11-20 06:59:51,165 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer/data/183ac7d79/27eff6d6479246a583d6a286e3f15826 [2019-11-20 06:59:51,169 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 06:59:51,170 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 06:59:51,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 06:59:51,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 06:59:51,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 06:59:51,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:59:51" (1/1) ... [2019-11-20 06:59:51,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@665cdbed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:51, skipping insertion in model container [2019-11-20 06:59:51,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:59:51" (1/1) ... [2019-11-20 06:59:51,189 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 06:59:51,208 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 06:59:51,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 06:59:51,402 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 06:59:51,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 06:59:51,513 INFO L192 MainTranslator]: Completed translation [2019-11-20 06:59:51,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:51 WrapperNode [2019-11-20 06:59:51,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 06:59:51,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 06:59:51,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 06:59:51,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 06:59:51,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:51" (1/1) ... [2019-11-20 06:59:51,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:51" (1/1) ... [2019-11-20 06:59:51,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 06:59:51,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 06:59:51,556 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 06:59:51,556 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 06:59:51,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:51" (1/1) ... [2019-11-20 06:59:51,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:51" (1/1) ... [2019-11-20 06:59:51,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:51" (1/1) ... [2019-11-20 06:59:51,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:51" (1/1) ... [2019-11-20 06:59:51,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:51" (1/1) ... [2019-11-20 06:59:51,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:51" (1/1) ... [2019-11-20 06:59:51,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:51" (1/1) ... [2019-11-20 06:59:51,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 06:59:51,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 06:59:51,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 06:59:51,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 06:59:51,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 06:59:51,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 06:59:51,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 06:59:51,756 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 06:59:51,756 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-20 06:59:51,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:59:51 BoogieIcfgContainer [2019-11-20 06:59:51,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 06:59:51,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 06:59:51,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 06:59:51,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 06:59:51,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:59:51" (1/3) ... [2019-11-20 06:59:51,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222dadd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:59:51, skipping insertion in model container [2019-11-20 06:59:51,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:51" (2/3) ... [2019-11-20 06:59:51,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222dadd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:59:51, skipping insertion in model container [2019-11-20 06:59:51,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:59:51" (3/3) ... [2019-11-20 06:59:51,766 INFO L109 eAbstractionObserver]: Analyzing ICFG square_8.i [2019-11-20 06:59:51,777 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 06:59:51,786 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 06:59:51,800 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 06:59:51,832 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 06:59:51,833 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 06:59:51,833 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 06:59:51,833 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 06:59:51,833 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 06:59:51,834 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 06:59:51,834 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 06:59:51,835 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 06:59:51,855 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-20 06:59:51,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-20 06:59:51,862 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:59:51,863 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-20 06:59:51,864 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:59:51,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:59:51,870 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-20 06:59:51,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:59:51,880 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287356867] [2019-11-20 06:59:51,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:59:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 06:59:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 06:59:52,007 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 06:59:52,008 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 06:59:52,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:59:52 BoogieIcfgContainer [2019-11-20 06:59:52,025 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 06:59:52,025 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 06:59:52,025 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 06:59:52,026 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 06:59:52,026 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:59:51" (3/4) ... [2019-11-20 06:59:52,030 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 06:59:52,030 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 06:59:52,033 INFO L168 Benchmark]: Toolchain (without parser) took 861.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -141.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 06:59:52,034 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 06:59:52,035 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -170.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-20 06:59:52,036 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 06:59:52,036 INFO L168 Benchmark]: Boogie Preprocessor took 15.07 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 06:59:52,037 INFO L168 Benchmark]: RCFGBuilder took 186.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-20 06:59:52,038 INFO L168 Benchmark]: TraceAbstraction took 266.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-20 06:59:52,038 INFO L168 Benchmark]: Witness Printer took 5.26 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 06:59:52,042 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 341.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -170.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.07 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 186.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 266.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 5.26 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryArithmeticFLOAToperation at line 12. Possible FailurePath: [L6] float IN = __VERIFIER_nondet_float(); [L9] float x = IN; [L11-L12] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L14] COND TRUE !(result >= 0.0f && result < 1.5f) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 06:59:53,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 06:59:53,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 06:59:53,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 06:59:53,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 06:59:53,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 06:59:53,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 06:59:53,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 06:59:53,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 06:59:53,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 06:59:53,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 06:59:53,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 06:59:53,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 06:59:53,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 06:59:53,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 06:59:53,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 06:59:53,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 06:59:53,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 06:59:53,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 06:59:54,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 06:59:54,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 06:59:54,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 06:59:54,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 06:59:54,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 06:59:54,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 06:59:54,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 06:59:54,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 06:59:54,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 06:59:54,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 06:59:54,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 06:59:54,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 06:59:54,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 06:59:54,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 06:59:54,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 06:59:54,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 06:59:54,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 06:59:54,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 06:59:54,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 06:59:54,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 06:59:54,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 06:59:54,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 06:59:54,019 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-20 06:59:54,047 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 06:59:54,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 06:59:54,048 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 06:59:54,049 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 06:59:54,049 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 06:59:54,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 06:59:54,049 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 06:59:54,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 06:59:54,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 06:59:54,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 06:59:54,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 06:59:54,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 06:59:54,051 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 06:59:54,051 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 06:59:54,051 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 06:59:54,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 06:59:54,051 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 06:59:54,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 06:59:54,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 06:59:54,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 06:59:54,052 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 06:59:54,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 06:59:54,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 06:59:54,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 06:59:54,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 06:59:54,054 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 06:59:54,054 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 06:59:54,054 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 06:59:54,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 06:59:54,054 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 06:59:54,055 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 847ec304644081d839ca7e80209d45b391ec9937 [2019-11-20 06:59:54,358 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 06:59:54,370 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 06:59:54,373 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 06:59:54,374 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 06:59:54,375 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 06:59:54,375 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/square_8.i [2019-11-20 06:59:54,433 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer/data/b7264662c/6f60c669680445ccbcd4d2bd42d04467/FLAG20eb14c5d [2019-11-20 06:59:54,838 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 06:59:54,838 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/sv-benchmarks/c/floats-cdfpl/square_8.i [2019-11-20 06:59:54,844 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer/data/b7264662c/6f60c669680445ccbcd4d2bd42d04467/FLAG20eb14c5d [2019-11-20 06:59:55,254 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer/data/b7264662c/6f60c669680445ccbcd4d2bd42d04467 [2019-11-20 06:59:55,257 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 06:59:55,258 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 06:59:55,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 06:59:55,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 06:59:55,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 06:59:55,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:59:55" (1/1) ... [2019-11-20 06:59:55,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673e7c68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:55, skipping insertion in model container [2019-11-20 06:59:55,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:59:55" (1/1) ... [2019-11-20 06:59:55,276 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 06:59:55,293 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 06:59:55,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 06:59:55,448 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 06:59:55,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 06:59:55,481 INFO L192 MainTranslator]: Completed translation [2019-11-20 06:59:55,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:55 WrapperNode [2019-11-20 06:59:55,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 06:59:55,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 06:59:55,483 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 06:59:55,483 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 06:59:55,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:55" (1/1) ... [2019-11-20 06:59:55,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:55" (1/1) ... [2019-11-20 06:59:55,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 06:59:55,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 06:59:55,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 06:59:55,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 06:59:55,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:55" (1/1) ... [2019-11-20 06:59:55,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:55" (1/1) ... [2019-11-20 06:59:55,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:55" (1/1) ... [2019-11-20 06:59:55,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:55" (1/1) ... [2019-11-20 06:59:55,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:55" (1/1) ... [2019-11-20 06:59:55,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:55" (1/1) ... [2019-11-20 06:59:55,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:55" (1/1) ... [2019-11-20 06:59:55,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 06:59:55,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 06:59:55,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 06:59:55,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 06:59:55,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 06:59:55,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 06:59:55,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 06:59:57,930 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 06:59:57,930 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-20 06:59:57,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:59:57 BoogieIcfgContainer [2019-11-20 06:59:57,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 06:59:57,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 06:59:57,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 06:59:57,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 06:59:57,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:59:55" (1/3) ... [2019-11-20 06:59:57,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198bfa5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:59:57, skipping insertion in model container [2019-11-20 06:59:57,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:55" (2/3) ... [2019-11-20 06:59:57,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198bfa5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:59:57, skipping insertion in model container [2019-11-20 06:59:57,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:59:57" (3/3) ... [2019-11-20 06:59:57,939 INFO L109 eAbstractionObserver]: Analyzing ICFG square_8.i [2019-11-20 06:59:57,950 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 06:59:57,957 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 06:59:57,968 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 06:59:57,991 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 06:59:57,992 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 06:59:57,992 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 06:59:57,992 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 06:59:57,993 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 06:59:57,993 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 06:59:57,993 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 06:59:57,993 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 06:59:58,007 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-20 06:59:58,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-20 06:59:58,012 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:59:58,013 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-20 06:59:58,014 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:59:58,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:59:58,020 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-20 06:59:58,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 06:59:58,029 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811405427] [2019-11-20 06:59:58,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-20 07:00:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:00:32,781 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 07:00:32,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:00:34,883 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 8 24)) (= c_ULTIMATE.start_main_~result~0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0))) (fp.lt ULTIMATE.start_main_~x~0 .cse0)))) is different from false [2019-11-20 07:00:36,941 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 8 24)) (= c_ULTIMATE.start_main_~result~0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0))) (fp.lt ULTIMATE.start_main_~x~0 .cse0)))) is different from true [2019-11-20 07:00:39,007 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:00:49,402 WARN L838 $PredicateComparison]: unable to prove that (or (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (_ +zero 8 24))) (fp.lt ULTIMATE.start_main_~x~0 .cse0)))) (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 8 24)) (fp.lt ULTIMATE.start_main_~x~0 .cse1))))) is different from false [2019-11-20 07:00:51,477 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (_ +zero 8 24))) (fp.lt ULTIMATE.start_main_~x~0 .cse0)))) (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 8 24)) (fp.lt ULTIMATE.start_main_~x~0 .cse1))))) is different from true [2019-11-20 07:00:51,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:00:51,480 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:00:51,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:00:51,520 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811405427] [2019-11-20 07:00:51,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:00:51,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2019-11-20 07:00:51,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894449932] [2019-11-20 07:00:51,526 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 07:00:51,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 07:00:51,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 07:00:51,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=3, Unknown=4, NotChecked=6, Total=20 [2019-11-20 07:00:51,557 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 5 states. [2019-11-20 07:00:53,672 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 8 24)) (= c_ULTIMATE.start_main_~result~0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~x~0))) (fp.lt ULTIMATE.start_main_~x~0 .cse0)))) (fp.geq c_ULTIMATE.start_main_~result~0 (_ +zero 8 24)) (fp.lt c_ULTIMATE.start_main_~result~0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) is different from false [2019-11-20 07:00:53,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:00:53,685 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2019-11-20 07:00:53,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 07:00:53,686 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 3 [2019-11-20 07:00:53,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:00:53,691 INFO L225 Difference]: With dead ends: 12 [2019-11-20 07:00:53,691 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 07:00:53,693 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=9, Invalid=4, Unknown=5, NotChecked=12, Total=30 [2019-11-20 07:00:53,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 07:00:53,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 07:00:53,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 07:00:53,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 07:00:53,712 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3 [2019-11-20 07:00:53,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:00:53,712 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 07:00:53,713 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 07:00:53,713 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 07:00:53,713 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 07:00:53,934 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-20 07:00:53,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 07:00:53,967 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 07:00:53,967 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 07:00:53,967 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 07:00:53,967 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2019-11-20 07:00:53,967 INFO L447 ceAbstractionStarter]: At program point L17(lines 4 18) the Hoare annotation is: true [2019-11-20 07:00:53,968 INFO L444 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2019-11-20 07:00:53,968 INFO L444 ceAbstractionStarter]: For program point L14(lines 14 15) no Hoare annotation was computed. [2019-11-20 07:00:53,968 INFO L444 ceAbstractionStarter]: For program point L14-2(lines 14 15) no Hoare annotation was computed. [2019-11-20 07:00:53,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:00:53 BoogieIcfgContainer [2019-11-20 07:00:53,972 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 07:00:53,973 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 07:00:53,973 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 07:00:53,973 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 07:00:53,973 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:59:57" (3/4) ... [2019-11-20 07:00:53,976 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 07:00:53,985 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 07:00:53,986 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-20 07:00:54,020 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_656ab618-6997-431e-9b2a-62eb9df7b173/bin/uautomizer/witness.graphml [2019-11-20 07:00:54,020 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 07:00:54,022 INFO L168 Benchmark]: Toolchain (without parser) took 58763.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 963.1 MB in the beginning and 1.1 GB in the end (delta: -129.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. [2019-11-20 07:00:54,023 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 07:00:54,023 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.62 ms. Allocated memory is still 1.0 GB. Free memory was 963.1 MB in the beginning and 952.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-20 07:00:54,024 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.94 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 947.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 07:00:54,025 INFO L168 Benchmark]: Boogie Preprocessor took 84.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -198.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. [2019-11-20 07:00:54,025 INFO L168 Benchmark]: RCFGBuilder took 2328.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2019-11-20 07:00:54,026 INFO L168 Benchmark]: TraceAbstraction took 56040.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.2 MB). Peak memory consumption was 39.2 MB. Max. memory is 11.5 GB. [2019-11-20 07:00:54,026 INFO L168 Benchmark]: Witness Printer took 47.41 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 07:00:54,029 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 222.62 ms. Allocated memory is still 1.0 GB. Free memory was 963.1 MB in the beginning and 952.4 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 35.94 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 947.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 84.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -198.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2328.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 56040.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.2 MB). Peak memory consumption was 39.2 MB. Max. memory is 11.5 GB. * Witness Printer took 47.41 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Result: SAFE, OverallTime: 55.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 4 SDtfs, 0 SDslu, 3 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 34.6s SatisfiabilityAnalysisTime, 18.7s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 2 QuantifiedInterpolants, 420 SizeOfPredicates, 3 NumberOfNonLiveVariables, 8 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...