./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c --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_d944189a-6074-462d-909e-30994cb2418b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/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 c8e4dbe5a9ab518912f1108432d43f490ec977d7 .......................................................................................................................................................................................................................................................................................................................................................................................... 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_d944189a-6074-462d-909e-30994cb2418b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/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 c8e4dbe5a9ab518912f1108432d43f490ec977d7 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 10:37:04,678 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 10:37:04,679 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 10:37:04,686 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 10:37:04,687 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 10:37:04,687 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 10:37:04,688 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 10:37:04,689 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 10:37:04,690 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 10:37:04,691 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 10:37:04,692 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 10:37:04,692 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 10:37:04,693 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 10:37:04,693 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 10:37:04,694 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 10:37:04,695 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 10:37:04,695 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 10:37:04,696 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 10:37:04,698 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 10:37:04,699 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 10:37:04,699 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 10:37:04,700 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 10:37:04,702 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 10:37:04,702 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 10:37:04,702 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 10:37:04,703 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 10:37:04,703 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 10:37:04,704 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 10:37:04,704 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 10:37:04,705 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 10:37:04,705 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 10:37:04,706 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 10:37:04,706 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 10:37:04,706 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 10:37:04,707 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 10:37:04,707 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 10:37:04,708 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-08 10:37:04,717 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 10:37:04,718 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 10:37:04,718 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 10:37:04,718 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 10:37:04,719 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 10:37:04,719 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 10:37:04,719 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 10:37:04,719 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 10:37:04,719 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 10:37:04,719 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 10:37:04,720 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 10:37:04,720 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 10:37:04,720 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 10:37:04,720 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 10:37:04,720 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 10:37:04,720 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 10:37:04,720 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 10:37:04,721 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 10:37:04,721 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 10:37:04,721 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 10:37:04,721 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 10:37:04,721 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 10:37:04,721 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 10:37:04,722 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 10:37:04,722 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 10:37:04,722 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 10:37:04,722 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 10:37:04,722 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 10:37:04,722 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 10:37:04,722 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 10:37:04,722 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_d944189a-6074-462d-909e-30994cb2418b/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 -> c8e4dbe5a9ab518912f1108432d43f490ec977d7 [2018-12-08 10:37:04,746 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 10:37:04,754 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 10:37:04,757 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 10:37:04,758 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 10:37:04,758 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 10:37:04,759 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-12-08 10:37:04,801 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/bin-2019/uautomizer/data/7f177c3ba/640d6fa83e45463dbd79f051193151e1/FLAG50ffc5d05 [2018-12-08 10:37:05,204 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 10:37:05,204 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-12-08 10:37:05,208 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/bin-2019/uautomizer/data/7f177c3ba/640d6fa83e45463dbd79f051193151e1/FLAG50ffc5d05 [2018-12-08 10:37:05,627 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/bin-2019/uautomizer/data/7f177c3ba/640d6fa83e45463dbd79f051193151e1 [2018-12-08 10:37:05,629 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 10:37:05,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 10:37:05,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 10:37:05,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 10:37:05,632 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 10:37:05,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 10:37:05" (1/1) ... [2018-12-08 10:37:05,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21bd89b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:37:05, skipping insertion in model container [2018-12-08 10:37:05,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 10:37:05" (1/1) ... [2018-12-08 10:37:05,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 10:37:05,648 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 10:37:05,739 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 10:37:05,741 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 10:37:05,755 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 10:37:05,767 INFO L195 MainTranslator]: Completed translation [2018-12-08 10:37:05,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:37:05 WrapperNode [2018-12-08 10:37:05,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 10:37:05,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 10:37:05,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 10:37:05,768 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 10:37:05,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:37:05" (1/1) ... [2018-12-08 10:37:05,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:37:05" (1/1) ... [2018-12-08 10:37:05,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 10:37:05,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 10:37:05,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 10:37:05,782 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 10:37:05,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:37:05" (1/1) ... [2018-12-08 10:37:05,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:37:05" (1/1) ... [2018-12-08 10:37:05,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:37:05" (1/1) ... [2018-12-08 10:37:05,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:37:05" (1/1) ... [2018-12-08 10:37:05,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:37:05" (1/1) ... [2018-12-08 10:37:05,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:37:05" (1/1) ... [2018-12-08 10:37:05,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:37:05" (1/1) ... [2018-12-08 10:37:05,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 10:37:05,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 10:37:05,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 10:37:05,828 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 10:37:05,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:37:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/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 [2018-12-08 10:37:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 10:37:05,860 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 10:37:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-12-08 10:37:05,860 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-12-08 10:37:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-12-08 10:37:05,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-12-08 10:37:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 10:37:05,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 10:37:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-08 10:37:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 10:37:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 10:37:05,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 10:37:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-08 10:37:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-08 10:37:05,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-08 10:37:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 10:37:06,000 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 10:37:06,000 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-08 10:37:06,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:37:06 BoogieIcfgContainer [2018-12-08 10:37:06,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 10:37:06,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 10:37:06,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 10:37:06,003 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 10:37:06,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 10:37:05" (1/3) ... [2018-12-08 10:37:06,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d16f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 10:37:06, skipping insertion in model container [2018-12-08 10:37:06,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:37:05" (2/3) ... [2018-12-08 10:37:06,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d16f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 10:37:06, skipping insertion in model container [2018-12-08 10:37:06,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:37:06" (3/3) ... [2018-12-08 10:37:06,005 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b_false-unreach-call.c [2018-12-08 10:37:06,011 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 10:37:06,016 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 10:37:06,025 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 10:37:06,045 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 10:37:06,045 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 10:37:06,046 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 10:37:06,046 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 10:37:06,046 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 10:37:06,046 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 10:37:06,046 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 10:37:06,046 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 10:37:06,046 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 10:37:06,057 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-12-08 10:37:06,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-08 10:37:06,060 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:37:06,060 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:37:06,062 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 10:37:06,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:37:06,065 INFO L82 PathProgramCache]: Analyzing trace with hash -278474869, now seen corresponding path program 1 times [2018-12-08 10:37:06,066 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:37:06,066 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:37:06,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:37:06,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:37:06,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:37:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:37:06,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:37:06,144 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:37:06,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 10:37:06,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-08 10:37:06,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-08 10:37:06,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 10:37:06,154 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-12-08 10:37:06,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:37:06,168 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-12-08 10:37:06,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 10:37:06,168 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-12-08 10:37:06,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:37:06,174 INFO L225 Difference]: With dead ends: 79 [2018-12-08 10:37:06,174 INFO L226 Difference]: Without dead ends: 40 [2018-12-08 10:37:06,176 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 10:37:06,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-08 10:37:06,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-08 10:37:06,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-08 10:37:06,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-08 10:37:06,200 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-12-08 10:37:06,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:37:06,200 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-08 10:37:06,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-08 10:37:06,200 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-08 10:37:06,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-08 10:37:06,201 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:37:06,202 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:37:06,202 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 10:37:06,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:37:06,202 INFO L82 PathProgramCache]: Analyzing trace with hash -428418178, now seen corresponding path program 1 times [2018-12-08 10:37:06,202 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:37:06,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:37:06,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:37:06,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:37:06,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:37:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:37:06,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:37:06,249 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:37:06,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 10:37:06,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 10:37:06,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 10:37:06,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 10:37:06,251 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-12-08 10:37:06,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:37:06,271 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-12-08 10:37:06,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 10:37:06,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-08 10:37:06,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:37:06,274 INFO L225 Difference]: With dead ends: 59 [2018-12-08 10:37:06,274 INFO L226 Difference]: Without dead ends: 44 [2018-12-08 10:37:06,275 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 10:37:06,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-08 10:37:06,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-12-08 10:37:06,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-08 10:37:06,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-08 10:37:06,282 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-12-08 10:37:06,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:37:06,282 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-08 10:37:06,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 10:37:06,282 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-08 10:37:06,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-08 10:37:06,283 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:37:06,283 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:37:06,283 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 10:37:06,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:37:06,283 INFO L82 PathProgramCache]: Analyzing trace with hash 328113906, now seen corresponding path program 1 times [2018-12-08 10:37:06,284 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:37:06,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:37:06,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:37:06,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:37:06,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:37:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:37:06,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:37:06,324 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:37:06,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 10:37:06,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 10:37:06,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 10:37:06,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 10:37:06,325 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-12-08 10:37:06,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:37:06,339 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-12-08 10:37:06,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 10:37:06,339 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-12-08 10:37:06,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:37:06,340 INFO L225 Difference]: With dead ends: 63 [2018-12-08 10:37:06,340 INFO L226 Difference]: Without dead ends: 48 [2018-12-08 10:37:06,340 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 10:37:06,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-08 10:37:06,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-12-08 10:37:06,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-08 10:37:06,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-08 10:37:06,344 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-12-08 10:37:06,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:37:06,344 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-08 10:37:06,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 10:37:06,345 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-08 10:37:06,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-08 10:37:06,345 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:37:06,345 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:37:06,345 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 10:37:06,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:37:06,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1468837453, now seen corresponding path program 1 times [2018-12-08 10:37:06,346 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:37:06,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:37:06,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:37:06,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:37:06,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:37:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:37:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:37:06,381 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-08 10:37:06,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 10:37:06 BoogieIcfgContainer [2018-12-08 10:37:06,398 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 10:37:06,398 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 10:37:06,398 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 10:37:06,398 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 10:37:06,399 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:37:06" (3/4) ... [2018-12-08 10:37:06,401 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-08 10:37:06,401 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 10:37:06,402 INFO L168 Benchmark]: Toolchain (without parser) took 772.55 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 956.0 MB in the beginning and 1.0 GB in the end (delta: -74.0 MB). Peak memory consumption was 39.3 MB. Max. memory is 11.5 GB. [2018-12-08 10:37:06,403 INFO L168 Benchmark]: CDTParser took 0.14 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. [2018-12-08 10:37:06,403 INFO L168 Benchmark]: CACSL2BoogieTranslator took 137.15 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 10:37:06,403 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.47 ms. Allocated memory is still 1.0 GB. Free memory was 945.3 MB in the beginning and 939.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-08 10:37:06,404 INFO L168 Benchmark]: Boogie Preprocessor took 45.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -165.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2018-12-08 10:37:06,404 INFO L168 Benchmark]: RCFGBuilder took 172.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2018-12-08 10:37:06,404 INFO L168 Benchmark]: TraceAbstraction took 396.64 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 57.2 MB). Peak memory consumption was 57.2 MB. Max. memory is 11.5 GB. [2018-12-08 10:37:06,405 INFO L168 Benchmark]: Witness Printer took 3.01 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 10:37:06,407 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 137.15 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 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 14.47 ms. Allocated memory is still 1.0 GB. Free memory was 945.3 MB in the beginning and 939.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -165.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 172.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 396.64 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 57.2 MB). Peak memory consumption was 57.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.01 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 74. Possible FailurePath: [L73] float x = 0.0f; [L74] float y = -0.0f; VAL [x=0] [L75] CALL, EXPR fmax_float(x, y) VAL [\old(x)=0, \old(y)=4286578690] [L44] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0] [L21] __uint32_t w; VAL [\old(x)=0, x=0] [L24] ieee_float_shape_type gf_u; [L25] gf_u.value = (x) [L26] EXPR gf_u.word [L26] (w) = gf_u.word [L29] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=0, w=4286578689, x=0] [L31-L32] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L34-L35] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L37] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L40] return 0; VAL [\old(x)=0, \result=0, w=4286578689, x=0] [L44] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=4286578690, __fpclassify_float(x)=0, x=0, y=4286578690] [L44] COND TRUE __fpclassify_float(x) == 0 [L45] return y; VAL [\old(x)=0, \old(y)=4286578690, \result=4286578690, x=0, y=4286578690] [L75] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=4286578690, x=0, y=4286578690] [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=4286578690, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=4286578690] [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() VAL [res=4286578690, x=0, y=4286578690] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 144 SDtfs, 0 SDslu, 172 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 [2018-12-08 10:37:07,763 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 10:37:07,764 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 10:37:07,770 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 10:37:07,770 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 10:37:07,771 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 10:37:07,771 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 10:37:07,772 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 10:37:07,773 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 10:37:07,773 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 10:37:07,774 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 10:37:07,774 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 10:37:07,774 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 10:37:07,775 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 10:37:07,775 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 10:37:07,776 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 10:37:07,776 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 10:37:07,777 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 10:37:07,778 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 10:37:07,779 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 10:37:07,779 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 10:37:07,780 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 10:37:07,782 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 10:37:07,782 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 10:37:07,782 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 10:37:07,783 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 10:37:07,783 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 10:37:07,784 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 10:37:07,784 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 10:37:07,785 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 10:37:07,785 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 10:37:07,786 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 10:37:07,786 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 10:37:07,786 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 10:37:07,787 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 10:37:07,787 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 10:37:07,787 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-08 10:37:07,797 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 10:37:07,797 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 10:37:07,798 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 10:37:07,798 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 10:37:07,798 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 10:37:07,799 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 10:37:07,799 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 10:37:07,799 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 10:37:07,799 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 10:37:07,799 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 10:37:07,799 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 10:37:07,799 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 10:37:07,800 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 10:37:07,800 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 10:37:07,800 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-08 10:37:07,800 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-08 10:37:07,800 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 10:37:07,800 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 10:37:07,801 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 10:37:07,801 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 10:37:07,801 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 10:37:07,801 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 10:37:07,801 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 10:37:07,801 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 10:37:07,802 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 10:37:07,802 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 10:37:07,802 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 10:37:07,802 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 10:37:07,802 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-08 10:37:07,802 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 10:37:07,802 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-08 10:37:07,803 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-08 10:37:07,803 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_d944189a-6074-462d-909e-30994cb2418b/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 -> c8e4dbe5a9ab518912f1108432d43f490ec977d7 [2018-12-08 10:37:07,827 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 10:37:07,835 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 10:37:07,837 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 10:37:07,838 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 10:37:07,838 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 10:37:07,839 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-12-08 10:37:07,873 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/bin-2019/uautomizer/data/1be358454/370943939c364d488897fff186eb1f53/FLAGb24c75d9f [2018-12-08 10:37:08,302 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 10:37:08,302 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-12-08 10:37:08,306 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/bin-2019/uautomizer/data/1be358454/370943939c364d488897fff186eb1f53/FLAGb24c75d9f [2018-12-08 10:37:08,314 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/bin-2019/uautomizer/data/1be358454/370943939c364d488897fff186eb1f53 [2018-12-08 10:37:08,316 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 10:37:08,316 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 10:37:08,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 10:37:08,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 10:37:08,319 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 10:37:08,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 10:37:08" (1/1) ... [2018-12-08 10:37:08,321 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 08.12 10:37:08, skipping insertion in model container [2018-12-08 10:37:08,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 10:37:08" (1/1) ... [2018-12-08 10:37:08,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 10:37:08,335 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 10:37:08,427 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 10:37:08,430 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 10:37:08,446 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 10:37:08,460 INFO L195 MainTranslator]: Completed translation [2018-12-08 10:37:08,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:37:08 WrapperNode [2018-12-08 10:37:08,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 10:37:08,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 10:37:08,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 10:37:08,461 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 10:37:08,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:37:08" (1/1) ... [2018-12-08 10:37:08,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:37:08" (1/1) ... [2018-12-08 10:37:08,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 10:37:08,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 10:37:08,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 10:37:08,477 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 10:37:08,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:37:08" (1/1) ... [2018-12-08 10:37:08,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:37:08" (1/1) ... [2018-12-08 10:37:08,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:37:08" (1/1) ... [2018-12-08 10:37:08,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:37:08" (1/1) ... [2018-12-08 10:37:08,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:37:08" (1/1) ... [2018-12-08 10:37:08,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:37:08" (1/1) ... [2018-12-08 10:37:08,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:37:08" (1/1) ... [2018-12-08 10:37:08,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 10:37:08,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 10:37:08,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 10:37:08,497 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 10:37:08,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:37:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/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 [2018-12-08 10:37:08,566 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 10:37:08,566 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 10:37:08,567 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-12-08 10:37:08,567 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-12-08 10:37:08,567 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-12-08 10:37:08,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-12-08 10:37:08,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 10:37:08,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 10:37:08,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 10:37:08,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-08 10:37:08,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 10:37:08,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 10:37:08,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-12-08 10:37:08,567 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-08 10:37:08,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-08 10:37:08,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 10:37:08,703 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:37:08,728 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 10:37:08,731 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 10:37:08,731 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-08 10:37:08,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:37:08 BoogieIcfgContainer [2018-12-08 10:37:08,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 10:37:08,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 10:37:08,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 10:37:08,733 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 10:37:08,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 10:37:08" (1/3) ... [2018-12-08 10:37:08,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9627e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 10:37:08, skipping insertion in model container [2018-12-08 10:37:08,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:37:08" (2/3) ... [2018-12-08 10:37:08,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9627e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 10:37:08, skipping insertion in model container [2018-12-08 10:37:08,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:37:08" (3/3) ... [2018-12-08 10:37:08,735 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b_false-unreach-call.c [2018-12-08 10:37:08,741 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 10:37:08,745 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 10:37:08,753 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 10:37:08,770 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 10:37:08,770 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 10:37:08,770 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 10:37:08,770 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 10:37:08,770 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 10:37:08,770 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 10:37:08,771 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 10:37:08,771 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 10:37:08,771 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 10:37:08,780 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-12-08 10:37:08,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-08 10:37:08,783 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:37:08,784 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:37:08,785 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 10:37:08,788 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:37:08,788 INFO L82 PathProgramCache]: Analyzing trace with hash -849686715, now seen corresponding path program 1 times [2018-12-08 10:37:08,790 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 10:37:08,791 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/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 [2018-12-08 10:37:08,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:37:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:37:08,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:37:08,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:37:08,850 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 10:37:08,858 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:37:08,858 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 10:37:08,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-08 10:37:08,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-08 10:37:08,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 10:37:08,869 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-12-08 10:37:08,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:37:08,883 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-12-08 10:37:08,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 10:37:08,884 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-12-08 10:37:08,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:37:08,889 INFO L225 Difference]: With dead ends: 75 [2018-12-08 10:37:08,889 INFO L226 Difference]: Without dead ends: 38 [2018-12-08 10:37:08,891 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 10:37:08,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-08 10:37:08,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-12-08 10:37:08,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-08 10:37:08,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-12-08 10:37:08,915 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-12-08 10:37:08,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:37:08,915 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-12-08 10:37:08,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-08 10:37:08,915 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-12-08 10:37:08,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-08 10:37:08,916 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:37:08,916 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:37:08,917 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 10:37:08,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:37:08,917 INFO L82 PathProgramCache]: Analyzing trace with hash -2014516036, now seen corresponding path program 1 times [2018-12-08 10:37:08,917 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 10:37:08,917 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/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 [2018-12-08 10:37:08,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:37:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:37:08,953 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:37:08,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:37:08,972 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 10:37:08,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:37:08,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 10:37:08,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 10:37:08,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 10:37:08,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 10:37:08,981 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-12-08 10:37:09,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:37:09,003 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-12-08 10:37:09,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 10:37:09,003 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-12-08 10:37:09,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:37:09,005 INFO L225 Difference]: With dead ends: 56 [2018-12-08 10:37:09,005 INFO L226 Difference]: Without dead ends: 41 [2018-12-08 10:37:09,006 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 10:37:09,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-08 10:37:09,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-08 10:37:09,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-08 10:37:09,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-12-08 10:37:09,011 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-12-08 10:37:09,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:37:09,012 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-12-08 10:37:09,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 10:37:09,012 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-12-08 10:37:09,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-08 10:37:09,012 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:37:09,012 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:37:09,013 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 10:37:09,013 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:37:09,013 INFO L82 PathProgramCache]: Analyzing trace with hash -842703294, now seen corresponding path program 1 times [2018-12-08 10:37:09,013 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 10:37:09,013 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/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 [2018-12-08 10:37:09,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:37:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:37:09,046 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:37:09,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:37:09,126 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 10:37:09,133 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:37:09,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-08 10:37:09,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-08 10:37:09,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-08 10:37:09,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-08 10:37:09,134 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-12-08 10:37:09,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:37:09,509 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2018-12-08 10:37:09,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-08 10:37:09,510 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-12-08 10:37:09,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:37:09,511 INFO L225 Difference]: With dead ends: 60 [2018-12-08 10:37:09,511 INFO L226 Difference]: Without dead ends: 40 [2018-12-08 10:37:09,511 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-08 10:37:09,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-08 10:37:09,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-08 10:37:09,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-08 10:37:09,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-12-08 10:37:09,515 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 23 [2018-12-08 10:37:09,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:37:09,515 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-12-08 10:37:09,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-08 10:37:09,515 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-12-08 10:37:09,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-08 10:37:09,516 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:37:09,516 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:37:09,516 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 10:37:09,516 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:37:09,516 INFO L82 PathProgramCache]: Analyzing trace with hash 513797078, now seen corresponding path program 1 times [2018-12-08 10:37:09,516 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 10:37:09,516 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/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 [2018-12-08 10:37:09,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:37:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:37:09,563 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:37:09,572 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-08 10:37:09,572 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 10:37:09,578 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:37:09,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 10:37:09,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 10:37:09,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 10:37:09,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 10:37:09,579 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-12-08 10:37:09,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:37:09,589 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2018-12-08 10:37:09,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 10:37:09,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-12-08 10:37:09,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:37:09,590 INFO L225 Difference]: With dead ends: 56 [2018-12-08 10:37:09,590 INFO L226 Difference]: Without dead ends: 41 [2018-12-08 10:37:09,590 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 10:37:09,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-08 10:37:09,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-08 10:37:09,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-08 10:37:09,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-12-08 10:37:09,594 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 30 [2018-12-08 10:37:09,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:37:09,594 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-12-08 10:37:09,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 10:37:09,594 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-12-08 10:37:09,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-08 10:37:09,594 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:37:09,595 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:37:09,595 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 10:37:09,595 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:37:09,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1245379058, now seen corresponding path program 1 times [2018-12-08 10:37:09,595 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 10:37:09,595 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/bin-2019/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-12-08 10:37:09,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:37:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:37:09,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:37:09,711 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-08 10:37:09,711 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 10:37:09,718 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:37:09,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-08 10:37:09,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-08 10:37:09,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-08 10:37:09,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-08 10:37:09,719 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 8 states. [2018-12-08 10:37:10,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:37:10,040 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-12-08 10:37:10,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-08 10:37:10,041 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-12-08 10:37:10,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:37:10,042 INFO L225 Difference]: With dead ends: 58 [2018-12-08 10:37:10,042 INFO L226 Difference]: Without dead ends: 35 [2018-12-08 10:37:10,042 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-08 10:37:10,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-08 10:37:10,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-08 10:37:10,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-08 10:37:10,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-12-08 10:37:10,046 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 31 [2018-12-08 10:37:10,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:37:10,046 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-12-08 10:37:10,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-08 10:37:10,047 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-12-08 10:37:10,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-08 10:37:10,047 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:37:10,047 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:37:10,048 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 10:37:10,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:37:10,048 INFO L82 PathProgramCache]: Analyzing trace with hash 45724059, now seen corresponding path program 1 times [2018-12-08 10:37:10,048 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 10:37:10,048 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/bin-2019/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-12-08 10:37:10,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:37:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:37:10,086 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:37:10,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-08 10:37:10,124 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 10:37:10,131 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:37:10,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 10:37:10,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 10:37:10,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 10:37:10,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 10:37:10,132 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 5 states. [2018-12-08 10:37:10,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:37:10,183 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-12-08 10:37:10,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 10:37:10,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-12-08 10:37:10,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:37:10,184 INFO L225 Difference]: With dead ends: 51 [2018-12-08 10:37:10,184 INFO L226 Difference]: Without dead ends: 35 [2018-12-08 10:37:10,185 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-08 10:37:10,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-08 10:37:10,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-08 10:37:10,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-08 10:37:10,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-12-08 10:37:10,187 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2018-12-08 10:37:10,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:37:10,187 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-12-08 10:37:10,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 10:37:10,188 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-12-08 10:37:10,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-08 10:37:10,188 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:37:10,188 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:37:10,188 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 10:37:10,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:37:10,189 INFO L82 PathProgramCache]: Analyzing trace with hash -763622567, now seen corresponding path program 1 times [2018-12-08 10:37:10,189 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 10:37:10,189 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/bin-2019/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-12-08 10:37:10,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:37:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:37:10,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:37:10,279 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-08 10:37:10,279 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 10:37:10,286 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:37:10,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-08 10:37:10,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-08 10:37:10,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-08 10:37:10,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-08 10:37:10,286 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 8 states. [2018-12-08 10:37:10,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:37:10,421 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-12-08 10:37:10,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-08 10:37:10,421 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-12-08 10:37:10,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:37:10,422 INFO L225 Difference]: With dead ends: 38 [2018-12-08 10:37:10,422 INFO L226 Difference]: Without dead ends: 35 [2018-12-08 10:37:10,422 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-12-08 10:37:10,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-08 10:37:10,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-08 10:37:10,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-08 10:37:10,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-12-08 10:37:10,426 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-12-08 10:37:10,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:37:10,426 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-12-08 10:37:10,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-08 10:37:10,427 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-12-08 10:37:10,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-08 10:37:10,427 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:37:10,428 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:37:10,428 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 10:37:10,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:37:10,428 INFO L82 PathProgramCache]: Analyzing trace with hash -135886477, now seen corresponding path program 1 times [2018-12-08 10:37:10,428 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 10:37:10,428 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/bin-2019/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-12-08 10:37:10,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:37:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:37:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 10:37:10,552 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-08 10:37:10,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 10:37:10 BoogieIcfgContainer [2018-12-08 10:37:10,582 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 10:37:10,582 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 10:37:10,582 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 10:37:10,583 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 10:37:10,583 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:37:08" (3/4) ... [2018-12-08 10:37:10,584 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-08 10:37:10,624 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d944189a-6074-462d-909e-30994cb2418b/bin-2019/uautomizer/witness.graphml [2018-12-08 10:37:10,624 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 10:37:10,625 INFO L168 Benchmark]: Toolchain (without parser) took 2308.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 944.7 MB in the beginning and 882.7 MB in the end (delta: 62.0 MB). Peak memory consumption was 198.9 MB. Max. memory is 11.5 GB. [2018-12-08 10:37:10,626 INFO L168 Benchmark]: CDTParser took 0.12 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. [2018-12-08 10:37:10,626 INFO L168 Benchmark]: CACSL2BoogieTranslator took 143.86 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 932.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-12-08 10:37:10,627 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.83 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-08 10:37:10,627 INFO L168 Benchmark]: Boogie Preprocessor took 19.86 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 10:37:10,627 INFO L168 Benchmark]: RCFGBuilder took 234.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -179.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-12-08 10:37:10,628 INFO L168 Benchmark]: TraceAbstraction took 1850.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 889.5 MB in the end (delta: 216.9 MB). Peak memory consumption was 216.9 MB. Max. memory is 11.5 GB. [2018-12-08 10:37:10,628 INFO L168 Benchmark]: Witness Printer took 42.03 ms. Allocated memory is still 1.2 GB. Free memory was 889.5 MB in the beginning and 882.7 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-08 10:37:10,630 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 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 143.86 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 932.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.83 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.86 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 234.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -179.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1850.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 889.5 MB in the end (delta: 216.9 MB). Peak memory consumption was 216.9 MB. Max. memory is 11.5 GB. * Witness Printer took 42.03 ms. Allocated memory is still 1.2 GB. Free memory was 889.5 MB in the beginning and 882.7 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 79]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L73] float x = 0.0f; [L74] float y = -0.0f; VAL [x=0.0, y=0.0] [L75] CALL, EXPR fmax_float(x, y) VAL [\old(x)=0.0, \old(y)=0.0] [L44] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0.0] [L21] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L24] ieee_float_shape_type gf_u; [L25] gf_u.value = (x) [L26] EXPR gf_u.word [L26] (w) = gf_u.word [L29] COND TRUE w == 0x00000000 || w == 0x80000000 [L30] return 2; VAL [\old(x)=0.0, \result=2, w=0, x=0.0] [L44] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(x)=2, x=0.0, y=0.0] [L44] COND FALSE !(__fpclassify_float(x) == 0) [L48] CALL, EXPR __fpclassify_float(y) VAL [\old(x)=0.0] [L21] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L24] ieee_float_shape_type gf_u; [L25] gf_u.value = (x) [L26] EXPR gf_u.word [L26] (w) = gf_u.word [L29] COND TRUE w == 0x00000000 || w == 0x80000000 [L30] return 2; VAL [\old(x)=0.0, \result=2, w=2147483648, x=0.0] [L48] RET, EXPR __fpclassify_float(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(y)=2, x=0.0, y=0.0] [L48] COND FALSE !(__fpclassify_float(y) == 0) [L51] EXPR x > y ? x : y VAL [\old(x)=0.0, \old(y)=0.0, x=0.0, x > y ? x : y=0.0, y=0.0] [L51] return x > y ? x : y; [L75] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=0.0, x=0.0, y=0.0] [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=0.0, res == 0.0f && __signbit_float(res) == 0=1, x=0.0, y=0.0] [L78] CALL, EXPR __signbit_float(res) VAL [\old(x)=0.0] [L55] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L58] ieee_float_shape_type gf_u; [L59] gf_u.value = (x) [L60] EXPR gf_u.word [L60] (w) = gf_u.word [L63] return (w & 0x80000000) != 0; VAL [\old(x)=0.0, \result=1, w=2147483648, x=0.0] [L78] RET, EXPR __signbit_float(res) VAL [__signbit_float(res)=1, res=0.0, res == 0.0f && __signbit_float(res) == 0=1, x=0.0, y=0.0] [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [__signbit_float(res)=1, res=0.0, res == 0.0f && __signbit_float(res) == 0=0, x=0.0, y=0.0] [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() VAL [res=0.0, x=0.0, y=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. UNSAFE Result, 1.8s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 272 SDtfs, 111 SDslu, 739 SDs, 0 SdLazy, 268 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 196 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 231 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 184 ConstructedInterpolants, 12 QuantifiedInterpolants, 13625 SizeOfPredicates, 15 NumberOfNonLiveVariables, 539 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 24/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...