./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1232a_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/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 4284cb37841cd94fe17da64cc250a8a1e69c6375 ............................................................................................................................................................................................................................................................................................................................................................................................. 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_c1746f98-704e-4fea-a2fd-338af60a689f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/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 4284cb37841cd94fe17da64cc250a8a1e69c6375 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 12:32:08,812 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:32:08,813 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:32:08,821 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:32:08,821 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:32:08,822 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:32:08,823 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:32:08,824 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:32:08,825 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:32:08,826 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:32:08,826 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:32:08,826 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:32:08,827 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:32:08,828 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:32:08,828 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:32:08,829 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:32:08,829 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:32:08,831 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:32:08,832 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:32:08,833 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:32:08,834 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:32:08,834 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:32:08,836 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:32:08,836 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:32:08,836 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:32:08,837 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:32:08,838 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:32:08,838 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:32:08,839 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:32:08,839 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:32:08,840 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:32:08,840 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:32:08,840 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:32:08,840 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:32:08,841 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:32:08,842 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:32:08,842 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 12:32:08,851 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:32:08,851 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:32:08,852 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:32:08,852 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 12:32:08,852 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 12:32:08,853 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 12:32:08,853 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 12:32:08,853 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:32:08,853 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:32:08,853 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 12:32:08,853 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:32:08,853 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:32:08,853 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:32:08,854 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:32:08,854 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:32:08,854 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:32:08,854 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:32:08,854 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:32:08,854 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:32:08,854 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:32:08,854 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:32:08,855 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:32:08,855 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:32:08,855 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:32:08,855 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:32:08,855 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:32:08,855 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:32:08,855 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 12:32:08,856 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:32:08,856 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 12:32:08,856 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_c1746f98-704e-4fea-a2fd-338af60a689f/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 -> 4284cb37841cd94fe17da64cc250a8a1e69c6375 [2018-11-18 12:32:08,878 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:32:08,887 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:32:08,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:32:08,891 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:32:08,891 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:32:08,891 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-11-18 12:32:08,928 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/bin-2019/uautomizer/data/c41393d2b/a6ef5ef8f7e6490ab7c9b4630b14c07b/FLAG9b56cf440 [2018-11-18 12:32:09,242 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:32:09,243 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/sv-benchmarks/c/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-11-18 12:32:09,247 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/bin-2019/uautomizer/data/c41393d2b/a6ef5ef8f7e6490ab7c9b4630b14c07b/FLAG9b56cf440 [2018-11-18 12:32:09,256 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/bin-2019/uautomizer/data/c41393d2b/a6ef5ef8f7e6490ab7c9b4630b14c07b [2018-11-18 12:32:09,258 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:32:09,259 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 12:32:09,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:32:09,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:32:09,263 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:32:09,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:32:09" (1/1) ... [2018-11-18 12:32:09,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7490d4db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:32:09, skipping insertion in model container [2018-11-18 12:32:09,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:32:09" (1/1) ... [2018-11-18 12:32:09,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:32:09,293 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:32:09,418 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:32:09,420 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:32:09,435 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:32:09,449 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:32:09,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:32:09 WrapperNode [2018-11-18 12:32:09,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:32:09,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:32:09,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:32:09,449 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:32:09,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:32:09" (1/1) ... [2018-11-18 12:32:09,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:32:09" (1/1) ... [2018-11-18 12:32:09,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:32:09" (1/1) ... [2018-11-18 12:32:09,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:32:09" (1/1) ... [2018-11-18 12:32:09,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:32:09" (1/1) ... [2018-11-18 12:32:09,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:32:09" (1/1) ... [2018-11-18 12:32:09,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:32:09" (1/1) ... [2018-11-18 12:32:09,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:32:09,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:32:09,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:32:09,511 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:32:09,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:32:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/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 [2018-11-18 12:32:09,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:32:09,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:32:09,549 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-11-18 12:32:09,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-11-18 12:32:09,549 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-11-18 12:32:09,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-11-18 12:32:09,549 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:32:09,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 12:32:09,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-11-18 12:32:09,550 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-11-18 12:32:09,550 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-11-18 12:32:09,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 12:32:09,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 12:32:09,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 12:32:09,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 12:32:09,550 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-11-18 12:32:09,550 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-11-18 12:32:09,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:32:09,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:32:09,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:32:09,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-11-18 12:32:09,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-18 12:32:09,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 12:32:09,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 12:32:09,736 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:32:09,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:32:09 BoogieIcfgContainer [2018-11-18 12:32:09,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:32:09,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:32:09,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:32:09,739 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:32:09,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:32:09" (1/3) ... [2018-11-18 12:32:09,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9bb54a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:32:09, skipping insertion in model container [2018-11-18 12:32:09,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:32:09" (2/3) ... [2018-11-18 12:32:09,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9bb54a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:32:09, skipping insertion in model container [2018-11-18 12:32:09,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:32:09" (3/3) ... [2018-11-18 12:32:09,741 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a_true-unreach-call.c [2018-11-18 12:32:09,747 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:32:09,752 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 12:32:09,761 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 12:32:09,781 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 12:32:09,781 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:32:09,781 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:32:09,782 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:32:09,782 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:32:09,782 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:32:09,782 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:32:09,782 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:32:09,782 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:32:09,794 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-11-18 12:32:09,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 12:32:09,798 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:32:09,798 INFO L375 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] [2018-11-18 12:32:09,800 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:32:09,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:32:09,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1332057809, now seen corresponding path program 1 times [2018-11-18 12:32:09,804 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:32:09,805 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:32:09,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:32:09,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:32:09,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:32:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:32:09,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:32:09,898 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:32:09,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 12:32:09,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 12:32:09,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 12:32:09,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:32:09,915 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-11-18 12:32:09,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:32:09,931 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-11-18 12:32:09,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 12:32:09,932 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-11-18 12:32:09,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:32:09,938 INFO L225 Difference]: With dead ends: 79 [2018-11-18 12:32:09,938 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 12:32:09,941 INFO L604 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 [2018-11-18 12:32:09,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 12:32:09,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-18 12:32:09,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 12:32:09,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-18 12:32:09,966 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-11-18 12:32:09,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:32:09,967 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-18 12:32:09,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 12:32:09,967 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-18 12:32:09,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 12:32:09,969 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:32:09,969 INFO L375 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] [2018-11-18 12:32:09,969 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:32:09,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:32:09,969 INFO L82 PathProgramCache]: Analyzing trace with hash 423145447, now seen corresponding path program 1 times [2018-11-18 12:32:09,970 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:32:09,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:32:09,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:32:09,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:32:09,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:32:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:32:10,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:32:10,033 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:32:10,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 12:32:10,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 12:32:10,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 12:32:10,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:32:10,035 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-11-18 12:32:10,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:32:10,072 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-11-18 12:32:10,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 12:32:10,073 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-18 12:32:10,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:32:10,075 INFO L225 Difference]: With dead ends: 59 [2018-11-18 12:32:10,075 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 12:32:10,076 INFO L604 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 [2018-11-18 12:32:10,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 12:32:10,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-18 12:32:10,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-18 12:32:10,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-18 12:32:10,082 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-11-18 12:32:10,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:32:10,083 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-18 12:32:10,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 12:32:10,083 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-18 12:32:10,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 12:32:10,083 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:32:10,084 INFO L375 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] [2018-11-18 12:32:10,084 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:32:10,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:32:10,084 INFO L82 PathProgramCache]: Analyzing trace with hash -433327690, now seen corresponding path program 1 times [2018-11-18 12:32:10,084 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:32:10,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:32:10,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:32:10,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:32:10,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:32:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:32:10,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:32:10,140 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:32:10,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 12:32:10,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 12:32:10,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 12:32:10,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:32:10,141 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-11-18 12:32:10,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:32:10,178 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-11-18 12:32:10,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 12:32:10,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-11-18 12:32:10,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:32:10,179 INFO L225 Difference]: With dead ends: 63 [2018-11-18 12:32:10,179 INFO L226 Difference]: Without dead ends: 48 [2018-11-18 12:32:10,180 INFO L604 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 [2018-11-18 12:32:10,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-18 12:32:10,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-11-18 12:32:10,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-18 12:32:10,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-18 12:32:10,185 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-11-18 12:32:10,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:32:10,186 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-18 12:32:10,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 12:32:10,186 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-18 12:32:10,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 12:32:10,187 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:32:10,187 INFO L375 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] [2018-11-18 12:32:10,187 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:32:10,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:32:10,187 INFO L82 PathProgramCache]: Analyzing trace with hash 2064688247, now seen corresponding path program 1 times [2018-11-18 12:32:10,187 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:32:10,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:32:10,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:32:10,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:32:10,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:32:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:32:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:32:10,231 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 12:32:10,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 12:32:10 BoogieIcfgContainer [2018-11-18 12:32:10,247 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 12:32:10,248 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:32:10,248 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:32:10,248 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:32:10,248 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:32:09" (3/4) ... [2018-11-18 12:32:10,250 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 12:32:10,251 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:32:10,251 INFO L168 Benchmark]: Toolchain (without parser) took 992.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.7 MB). Free memory was 954.8 MB in the beginning and 1.1 GB in the end (delta: -162.9 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2018-11-18 12:32:10,252 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:32:10,252 INFO L168 Benchmark]: CACSL2BoogieTranslator took 189.51 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 941.4 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-18 12:32:10,253 INFO L168 Benchmark]: Boogie Preprocessor took 60.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.7 MB). Free memory was 941.4 MB in the beginning and 1.2 GB in the end (delta: -251.0 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. [2018-11-18 12:32:10,253 INFO L168 Benchmark]: RCFGBuilder took 226.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 11.5 GB. [2018-11-18 12:32:10,254 INFO L168 Benchmark]: TraceAbstraction took 509.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 44.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 11.5 GB. [2018-11-18 12:32:10,254 INFO L168 Benchmark]: Witness Printer took 2.97 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:32:10,257 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 189.51 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 941.4 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 60.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.7 MB). Free memory was 941.4 MB in the beginning and 1.2 GB in the end (delta: -251.0 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 226.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 509.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 44.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 11.5 GB. * Witness Printer took 2.97 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someUnaryDOUBLEoperation at line 75. Possible FailurePath: [L74] double x = 0.0; [L75] double y = -0.0; VAL [x=0] [L76] CALL, EXPR fmin_double(x, y) VAL [\old(x)=0, \old(y)=4293918725] [L46] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0] [L19] __uint32_t msw, lsw; VAL [\old(x)=0, x=0] [L22] FCALL ieee_double_shape_type ew_u; [L23] FCALL ew_u.value = (x) [L24] EXPR, FCALL ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR, FCALL ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L26] COND FALSE !(0) VAL [\old(x)=0, lsw=1, msw=4293918721, x=0] [L28-L29] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=0, lsw=1, msw=4293918721, x=0] [L31-L32] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=0, lsw=1, msw=4293918721, x=0] [L34-L35] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=0, lsw=1, msw=4293918721, x=0] [L38-L39] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L42] RET return 0; VAL [\old(x)=0, \result=0, lsw=1, msw=4293918721, x=0] [L46] EXPR __fpclassify_double(x) VAL [\old(x)=0, \old(y)=4293918725, __fpclassify_double(x)=0, x=0, y=4293918725] [L46] COND TRUE __fpclassify_double(x) == 0 [L47] RET return y; VAL [\old(x)=0, \old(y)=4293918725, \result=4293918725, x=0, y=4293918725] [L76] EXPR fmin_double(x, y) VAL [fmin_double(x, y)=4293918725, x=0, y=4293918725] [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=4293918725, res == -0.0 && __signbit_double(res) == 1=0, x=0, y=4293918725] [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() VAL [res=4293918725, x=0, y=4293918725] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 47 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s 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, 0.1s 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 0.1.23-5842f4b [2018-11-18 12:32:11,676 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:32:11,677 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:32:11,684 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:32:11,684 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:32:11,685 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:32:11,686 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:32:11,687 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:32:11,688 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:32:11,688 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:32:11,689 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:32:11,689 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:32:11,690 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:32:11,691 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:32:11,691 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:32:11,692 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:32:11,692 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:32:11,694 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:32:11,695 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:32:11,696 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:32:11,697 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:32:11,698 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:32:11,699 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:32:11,699 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:32:11,700 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:32:11,700 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:32:11,701 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:32:11,701 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:32:11,702 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:32:11,703 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:32:11,703 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:32:11,703 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:32:11,703 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:32:11,704 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:32:11,704 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:32:11,705 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:32:11,705 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-18 12:32:11,715 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:32:11,715 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:32:11,716 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:32:11,716 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 12:32:11,717 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 12:32:11,717 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 12:32:11,717 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 12:32:11,717 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:32:11,717 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:32:11,717 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:32:11,717 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:32:11,718 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:32:11,718 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:32:11,718 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:32:11,718 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 12:32:11,718 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 12:32:11,718 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:32:11,718 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:32:11,718 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:32:11,719 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:32:11,719 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:32:11,719 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:32:11,719 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:32:11,719 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:32:11,719 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:32:11,719 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:32:11,720 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:32:11,720 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:32:11,720 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-18 12:32:11,720 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:32:11,720 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 12:32:11,720 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 12:32:11,720 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_c1746f98-704e-4fea-a2fd-338af60a689f/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 -> 4284cb37841cd94fe17da64cc250a8a1e69c6375 [2018-11-18 12:32:11,749 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:32:11,758 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:32:11,761 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:32:11,762 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:32:11,762 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:32:11,763 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-11-18 12:32:11,806 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/bin-2019/uautomizer/data/5f5030257/60cf4afedbad426e8dad874772fcd5fe/FLAG49538d564 [2018-11-18 12:32:12,112 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:32:12,113 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/sv-benchmarks/c/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-11-18 12:32:12,119 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/bin-2019/uautomizer/data/5f5030257/60cf4afedbad426e8dad874772fcd5fe/FLAG49538d564 [2018-11-18 12:32:12,127 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/bin-2019/uautomizer/data/5f5030257/60cf4afedbad426e8dad874772fcd5fe [2018-11-18 12:32:12,130 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:32:12,131 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 12:32:12,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:32:12,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:32:12,134 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:32:12,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:32:12" (1/1) ... [2018-11-18 12:32:12,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27a4379e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:32:12, skipping insertion in model container [2018-11-18 12:32:12,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:32:12" (1/1) ... [2018-11-18 12:32:12,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:32:12,156 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:32:12,283 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:32:12,287 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:32:12,308 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:32:12,327 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:32:12,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:32:12 WrapperNode [2018-11-18 12:32:12,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:32:12,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:32:12,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:32:12,328 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:32:12,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:32:12" (1/1) ... [2018-11-18 12:32:12,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:32:12" (1/1) ... [2018-11-18 12:32:12,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:32:12" (1/1) ... [2018-11-18 12:32:12,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:32:12" (1/1) ... [2018-11-18 12:32:12,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:32:12" (1/1) ... [2018-11-18 12:32:12,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:32:12" (1/1) ... [2018-11-18 12:32:12,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:32:12" (1/1) ... [2018-11-18 12:32:12,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:32:12,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:32:12,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:32:12,410 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:32:12,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:32:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/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 [2018-11-18 12:32:12,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:32:12,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:32:12,452 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-11-18 12:32:12,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-11-18 12:32:12,452 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-11-18 12:32:12,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-11-18 12:32:12,453 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:32:12,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 12:32:12,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-11-18 12:32:12,453 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-11-18 12:32:12,453 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-11-18 12:32:12,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 12:32:12,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-11-18 12:32:12,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 12:32:12,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 12:32:12,454 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-11-18 12:32:12,454 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-11-18 12:32:12,454 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:32:12,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:32:12,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:32:12,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-11-18 12:32:12,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 12:32:12,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-11-18 12:32:12,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-11-18 12:32:12,576 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 12:32:12,630 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 12:32:12,683 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:32:12,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:32:12 BoogieIcfgContainer [2018-11-18 12:32:12,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:32:12,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:32:12,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:32:12,687 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:32:12,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:32:12" (1/3) ... [2018-11-18 12:32:12,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e863653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:32:12, skipping insertion in model container [2018-11-18 12:32:12,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:32:12" (2/3) ... [2018-11-18 12:32:12,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e863653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:32:12, skipping insertion in model container [2018-11-18 12:32:12,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:32:12" (3/3) ... [2018-11-18 12:32:12,689 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a_true-unreach-call.c [2018-11-18 12:32:12,696 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:32:12,702 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 12:32:12,715 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 12:32:12,734 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 12:32:12,734 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:32:12,734 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:32:12,734 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:32:12,734 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:32:12,734 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:32:12,734 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:32:12,734 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:32:12,734 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:32:12,744 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-11-18 12:32:12,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 12:32:12,748 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:32:12,748 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:32:12,750 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:32:12,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:32:12,753 INFO L82 PathProgramCache]: Analyzing trace with hash 179175536, now seen corresponding path program 1 times [2018-11-18 12:32:12,755 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:32:12,756 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/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 [2018-11-18 12:32:12,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:32:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:32:12,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:32:12,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:32:12,818 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:32:12,827 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:32:12,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 12:32:12,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 12:32:12,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 12:32:12,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:32:12,839 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-11-18 12:32:12,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:32:12,855 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-11-18 12:32:12,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 12:32:12,856 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-18 12:32:12,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:32:12,863 INFO L225 Difference]: With dead ends: 75 [2018-11-18 12:32:12,863 INFO L226 Difference]: Without dead ends: 38 [2018-11-18 12:32:12,865 INFO L604 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 [2018-11-18 12:32:12,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-18 12:32:12,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-11-18 12:32:12,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-18 12:32:12,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-11-18 12:32:12,892 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-11-18 12:32:12,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:32:12,892 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-11-18 12:32:12,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 12:32:12,893 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-11-18 12:32:12,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 12:32:12,894 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:32:12,894 INFO L375 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] [2018-11-18 12:32:12,895 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:32:12,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:32:12,895 INFO L82 PathProgramCache]: Analyzing trace with hash 844301188, now seen corresponding path program 1 times [2018-11-18 12:32:12,895 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:32:12,895 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/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 [2018-11-18 12:32:12,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:32:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:32:12,945 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:32:12,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:32:12,968 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:32:12,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:32:12,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 12:32:12,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 12:32:12,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 12:32:12,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:32:12,981 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-11-18 12:32:13,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:32:13,037 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-11-18 12:32:13,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 12:32:13,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-11-18 12:32:13,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:32:13,040 INFO L225 Difference]: With dead ends: 56 [2018-11-18 12:32:13,040 INFO L226 Difference]: Without dead ends: 41 [2018-11-18 12:32:13,041 INFO L604 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 [2018-11-18 12:32:13,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-18 12:32:13,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-18 12:32:13,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-18 12:32:13,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-11-18 12:32:13,048 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-11-18 12:32:13,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:32:13,048 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-11-18 12:32:13,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 12:32:13,048 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-11-18 12:32:13,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 12:32:13,049 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:32:13,049 INFO L375 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] [2018-11-18 12:32:13,050 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:32:13,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:32:13,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1242274605, now seen corresponding path program 1 times [2018-11-18 12:32:13,050 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:32:13,051 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/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 [2018-11-18 12:32:13,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:32:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:32:13,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:32:13,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:32:13,303 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:32:13,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:32:13,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 12:32:13,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 12:32:13,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 12:32:13,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 12:32:13,315 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-11-18 12:32:14,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:32:14,180 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2018-11-18 12:32:14,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 12:32:14,181 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-11-18 12:32:14,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:32:14,182 INFO L225 Difference]: With dead ends: 63 [2018-11-18 12:32:14,182 INFO L226 Difference]: Without dead ends: 43 [2018-11-18 12:32:14,182 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-18 12:32:14,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-18 12:32:14,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-18 12:32:14,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-18 12:32:14,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-11-18 12:32:14,188 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 23 [2018-11-18 12:32:14,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:32:14,188 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-11-18 12:32:14,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 12:32:14,188 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-11-18 12:32:14,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 12:32:14,189 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:32:14,189 INFO L375 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] [2018-11-18 12:32:14,189 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:32:14,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:32:14,190 INFO L82 PathProgramCache]: Analyzing trace with hash -91505376, now seen corresponding path program 1 times [2018-11-18 12:32:14,190 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:32:14,190 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/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 [2018-11-18 12:32:14,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:32:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:32:14,228 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:32:14,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:32:14,236 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:32:14,243 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:32:14,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 12:32:14,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 12:32:14,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 12:32:14,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:32:14,244 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 4 states. [2018-11-18 12:32:14,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:32:14,278 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2018-11-18 12:32:14,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 12:32:14,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-11-18 12:32:14,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:32:14,280 INFO L225 Difference]: With dead ends: 61 [2018-11-18 12:32:14,280 INFO L226 Difference]: Without dead ends: 46 [2018-11-18 12:32:14,281 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:32:14,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-18 12:32:14,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-11-18 12:32:14,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-18 12:32:14,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-11-18 12:32:14,285 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 24 [2018-11-18 12:32:14,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:32:14,285 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-11-18 12:32:14,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 12:32:14,285 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-11-18 12:32:14,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 12:32:14,286 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:32:14,286 INFO L375 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] [2018-11-18 12:32:14,286 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:32:14,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:32:14,286 INFO L82 PathProgramCache]: Analyzing trace with hash 724934153, now seen corresponding path program 1 times [2018-11-18 12:32:14,287 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:32:14,287 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/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 [2018-11-18 12:32:14,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:32:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:32:14,331 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:32:14,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:32:14,435 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:32:14,441 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:32:14,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 12:32:14,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 12:32:14,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 12:32:14,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 12:32:14,442 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 8 states. [2018-11-18 12:32:16,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:32:16,394 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2018-11-18 12:32:16,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 12:32:16,395 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-11-18 12:32:16,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:32:16,396 INFO L225 Difference]: With dead ends: 62 [2018-11-18 12:32:16,396 INFO L226 Difference]: Without dead ends: 42 [2018-11-18 12:32:16,396 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-18 12:32:16,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-18 12:32:16,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2018-11-18 12:32:16,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 12:32:16,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-11-18 12:32:16,401 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 25 [2018-11-18 12:32:16,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:32:16,402 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-11-18 12:32:16,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 12:32:16,402 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-11-18 12:32:16,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 12:32:16,403 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:32:16,403 INFO L375 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] [2018-11-18 12:32:16,403 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:32:16,403 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:32:16,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1225749153, now seen corresponding path program 1 times [2018-11-18 12:32:16,404 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:32:16,404 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/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 [2018-11-18 12:32:16,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:32:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:32:16,461 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:32:16,472 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 12:32:16,473 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:32:16,481 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:32:16,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 12:32:16,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 12:32:16,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 12:32:16,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:32:16,482 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-11-18 12:32:16,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:32:16,504 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2018-11-18 12:32:16,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 12:32:16,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-18 12:32:16,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:32:16,506 INFO L225 Difference]: With dead ends: 58 [2018-11-18 12:32:16,506 INFO L226 Difference]: Without dead ends: 43 [2018-11-18 12:32:16,507 INFO L604 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 [2018-11-18 12:32:16,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-18 12:32:16,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-18 12:32:16,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-18 12:32:16,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2018-11-18 12:32:16,511 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 30 [2018-11-18 12:32:16,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:32:16,511 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2018-11-18 12:32:16,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 12:32:16,512 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2018-11-18 12:32:16,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 12:32:16,512 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:32:16,512 INFO L375 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] [2018-11-18 12:32:16,512 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:32:16,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:32:16,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1288711338, now seen corresponding path program 1 times [2018-11-18 12:32:16,513 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:32:16,513 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/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 [2018-11-18 12:32:16,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:32:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:32:16,574 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:32:16,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 12:32:16,720 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:32:16,728 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:32:16,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 12:32:16,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 12:32:16,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 12:32:16,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 12:32:16,728 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 8 states. [2018-11-18 12:32:18,561 WARN L180 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-11-18 12:32:18,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:32:18,593 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2018-11-18 12:32:18,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 12:32:18,594 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-11-18 12:32:18,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:32:18,595 INFO L225 Difference]: With dead ends: 63 [2018-11-18 12:32:18,595 INFO L226 Difference]: Without dead ends: 43 [2018-11-18 12:32:18,596 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-18 12:32:18,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-18 12:32:18,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-18 12:32:18,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-18 12:32:18,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-11-18 12:32:18,601 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 31 [2018-11-18 12:32:18,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:32:18,601 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-11-18 12:32:18,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 12:32:18,601 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2018-11-18 12:32:18,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 12:32:18,602 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:32:18,602 INFO L375 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] [2018-11-18 12:32:18,602 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:32:18,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:32:18,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1406447738, now seen corresponding path program 1 times [2018-11-18 12:32:18,603 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:32:18,603 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/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 [2018-11-18 12:32:18,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:32:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:32:18,661 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:32:18,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 12:32:18,722 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:32:18,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:32:18,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 12:32:18,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 12:32:18,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 12:32:18,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 12:32:18,730 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 5 states. [2018-11-18 12:32:18,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:32:18,844 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2018-11-18 12:32:18,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 12:32:18,845 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-11-18 12:32:18,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:32:18,845 INFO L225 Difference]: With dead ends: 59 [2018-11-18 12:32:18,846 INFO L226 Difference]: Without dead ends: 43 [2018-11-18 12:32:18,846 INFO L604 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 [2018-11-18 12:32:18,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-18 12:32:18,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-18 12:32:18,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-18 12:32:18,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2018-11-18 12:32:18,850 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 32 [2018-11-18 12:32:18,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:32:18,851 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2018-11-18 12:32:18,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 12:32:18,851 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2018-11-18 12:32:18,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 12:32:18,851 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:32:18,852 INFO L375 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] [2018-11-18 12:32:18,852 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:32:18,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:32:18,852 INFO L82 PathProgramCache]: Analyzing trace with hash 2079172932, now seen corresponding path program 1 times [2018-11-18 12:32:18,852 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:32:18,852 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/bin-2019/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-11-18 12:32:18,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:32:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:32:18,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:32:18,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 12:32:18,979 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:32:18,986 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:32:18,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 12:32:18,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 12:32:18,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 12:32:18,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 12:32:18,987 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 8 states. [2018-11-18 12:32:19,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:32:19,286 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2018-11-18 12:32:19,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 12:32:19,287 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-11-18 12:32:19,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:32:19,287 INFO L225 Difference]: With dead ends: 50 [2018-11-18 12:32:19,288 INFO L226 Difference]: Without dead ends: 47 [2018-11-18 12:32:19,288 INFO L604 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 [2018-11-18 12:32:19,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-18 12:32:19,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-11-18 12:32:19,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-18 12:32:19,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2018-11-18 12:32:19,292 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 32 [2018-11-18 12:32:19,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:32:19,293 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2018-11-18 12:32:19,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 12:32:19,293 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2018-11-18 12:32:19,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 12:32:19,294 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:32:19,294 INFO L375 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, 1] [2018-11-18 12:32:19,294 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:32:19,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:32:19,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1581338045, now seen corresponding path program 1 times [2018-11-18 12:32:19,295 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:32:19,295 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/bin-2019/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-11-18 12:32:19,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:32:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:32:19,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:32:19,361 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 12:32:19,361 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:32:19,368 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:32:19,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 12:32:19,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 12:32:19,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 12:32:19,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:32:19,369 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 4 states. [2018-11-18 12:32:19,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:32:19,387 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2018-11-18 12:32:19,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 12:32:19,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-11-18 12:32:19,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:32:19,388 INFO L225 Difference]: With dead ends: 63 [2018-11-18 12:32:19,388 INFO L226 Difference]: Without dead ends: 48 [2018-11-18 12:32:19,389 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:32:19,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-18 12:32:19,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2018-11-18 12:32:19,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 12:32:19,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2018-11-18 12:32:19,393 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 32 [2018-11-18 12:32:19,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:32:19,393 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2018-11-18 12:32:19,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 12:32:19,394 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2018-11-18 12:32:19,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-18 12:32:19,394 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:32:19,394 INFO L375 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, 1, 1] [2018-11-18 12:32:19,395 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:32:19,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:32:19,395 INFO L82 PathProgramCache]: Analyzing trace with hash -427498318, now seen corresponding path program 1 times [2018-11-18 12:32:19,395 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:32:19,395 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/bin-2019/uautomizer/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-11-18 12:32:19,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:32:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:32:19,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:32:19,618 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 12:32:19,619 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:32:19,631 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:32:19,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 12:32:19,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 12:32:19,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 12:32:19,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 12:32:19,632 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 8 states. [2018-11-18 12:32:20,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:32:20,278 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2018-11-18 12:32:20,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 12:32:20,279 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2018-11-18 12:32:20,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:32:20,280 INFO L225 Difference]: With dead ends: 62 [2018-11-18 12:32:20,280 INFO L226 Difference]: Without dead ends: 37 [2018-11-18 12:32:20,280 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-18 12:32:20,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-18 12:32:20,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-11-18 12:32:20,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-18 12:32:20,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-11-18 12:32:20,283 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 33 [2018-11-18 12:32:20,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:32:20,283 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-11-18 12:32:20,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 12:32:20,284 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-11-18 12:32:20,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-18 12:32:20,284 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:32:20,284 INFO L375 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] [2018-11-18 12:32:20,284 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:32:20,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:32:20,284 INFO L82 PathProgramCache]: Analyzing trace with hash -515812987, now seen corresponding path program 1 times [2018-11-18 12:32:20,284 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:32:20,284 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/bin-2019/uautomizer/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-11-18 12:32:20,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:32:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:32:20,417 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:32:20,505 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 12:32:20,505 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 12:32:20,509 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2018-11-18 12:32:20,542 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 24 [2018-11-18 12:32:20,542 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 12:32:20,551 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2018-11-18 12:32:20,555 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 4 [2018-11-18 12:32:20,555 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 12:32:20,557 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 12:32:20,559 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 12:32:20,564 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 12:32:20,565 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:42, output treesize:14 [2018-11-18 12:32:20,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 12:32:20,710 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:32:20,719 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:32:20,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-11-18 12:32:20,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 12:32:20,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 12:32:20,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-11-18 12:32:20,720 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 13 states. [2018-11-18 12:32:23,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:32:23,269 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-11-18 12:32:23,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 12:32:23,270 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2018-11-18 12:32:23,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:32:23,270 INFO L225 Difference]: With dead ends: 37 [2018-11-18 12:32:23,270 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 12:32:23,271 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2018-11-18 12:32:23,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 12:32:23,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 12:32:23,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 12:32:23,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 12:32:23,271 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2018-11-18 12:32:23,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:32:23,271 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 12:32:23,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-18 12:32:23,271 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 12:32:23,271 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 12:32:23,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 12:32:23,492 WARN L180 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 21 [2018-11-18 12:32:23,494 INFO L425 ceAbstractionStarter]: For program point isnan_doubleENTRY(line 16) no Hoare annotation was computed. [2018-11-18 12:32:23,494 INFO L425 ceAbstractionStarter]: For program point isnan_doubleEXIT(line 16) no Hoare annotation was computed. [2018-11-18 12:32:23,494 INFO L425 ceAbstractionStarter]: For program point isnan_doubleFINAL(line 16) no Hoare annotation was computed. [2018-11-18 12:32:23,494 INFO L425 ceAbstractionStarter]: For program point L31(lines 31 42) no Hoare annotation was computed. [2018-11-18 12:32:23,494 INFO L425 ceAbstractionStarter]: For program point __fpclassify_doubleFINAL(lines 18 43) no Hoare annotation was computed. [2018-11-18 12:32:23,494 INFO L425 ceAbstractionStarter]: For program point L21-1(lines 21 26) no Hoare annotation was computed. [2018-11-18 12:32:23,494 INFO L421 ceAbstractionStarter]: At program point L21-3(lines 21 26) the Hoare annotation is: (= |__fpclassify_double_#in~x| __fpclassify_double_~x) [2018-11-18 12:32:23,494 INFO L425 ceAbstractionStarter]: For program point L21-4(lines 18 43) no Hoare annotation was computed. [2018-11-18 12:32:23,494 INFO L428 ceAbstractionStarter]: At program point __fpclassify_doubleENTRY(lines 18 43) the Hoare annotation is: true [2018-11-18 12:32:23,494 INFO L425 ceAbstractionStarter]: For program point L38(lines 38 42) no Hoare annotation was computed. [2018-11-18 12:32:23,494 INFO L425 ceAbstractionStarter]: For program point L34(lines 34 42) no Hoare annotation was computed. [2018-11-18 12:32:23,494 INFO L425 ceAbstractionStarter]: For program point __fpclassify_doubleEXIT(lines 18 43) no Hoare annotation was computed. [2018-11-18 12:32:23,494 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 12:32:23,494 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 12:32:23,494 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:32:23,494 INFO L425 ceAbstractionStarter]: For program point __signbit_doubleFINAL(lines 54 64) no Hoare annotation was computed. [2018-11-18 12:32:23,494 INFO L425 ceAbstractionStarter]: For program point L57-1(lines 57 61) no Hoare annotation was computed. [2018-11-18 12:32:23,494 INFO L425 ceAbstractionStarter]: For program point __signbit_doubleEXIT(lines 54 64) no Hoare annotation was computed. [2018-11-18 12:32:23,494 INFO L421 ceAbstractionStarter]: At program point L57-3(lines 57 61) the Hoare annotation is: (= |__signbit_double_#in~x| __signbit_double_~x) [2018-11-18 12:32:23,495 INFO L425 ceAbstractionStarter]: For program point L57-4(lines 57 61) no Hoare annotation was computed. [2018-11-18 12:32:23,495 INFO L428 ceAbstractionStarter]: At program point __signbit_doubleENTRY(lines 54 64) the Hoare annotation is: true [2018-11-18 12:32:23,495 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:32:23,495 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 12:32:23,495 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 12:32:23,495 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 12:32:23,495 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 66 85) the Hoare annotation is: true [2018-11-18 12:32:23,495 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 66 85) no Hoare annotation was computed. [2018-11-18 12:32:23,495 INFO L425 ceAbstractionStarter]: For program point L80(line 80) no Hoare annotation was computed. [2018-11-18 12:32:23,495 INFO L425 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2018-11-18 12:32:23,495 INFO L421 ceAbstractionStarter]: At program point L79-1(line 79) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and (= main_~res~0 .cse0) (= (_ +zero 11 53) main_~x~0) |main_#t~short11| (= main_~y~0 .cse0))) [2018-11-18 12:32:23,495 INFO L425 ceAbstractionStarter]: For program point L79-2(line 79) no Hoare annotation was computed. [2018-11-18 12:32:23,495 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 66 85) no Hoare annotation was computed. [2018-11-18 12:32:23,496 INFO L421 ceAbstractionStarter]: At program point L76(line 76) the Hoare annotation is: (and (= (_ +zero 11 53) main_~x~0) (= main_~y~0 (fp.neg (_ +zero 11 53)))) [2018-11-18 12:32:23,496 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 80) no Hoare annotation was computed. [2018-11-18 12:32:23,496 INFO L425 ceAbstractionStarter]: For program point L76-1(line 76) no Hoare annotation was computed. [2018-11-18 12:32:23,496 INFO L425 ceAbstractionStarter]: For program point L79-4(lines 79 82) no Hoare annotation was computed. [2018-11-18 12:32:23,496 INFO L425 ceAbstractionStarter]: For program point fmin_doubleFINAL(lines 45 52) no Hoare annotation was computed. [2018-11-18 12:32:23,496 INFO L428 ceAbstractionStarter]: At program point fmin_doubleENTRY(lines 45 52) the Hoare annotation is: true [2018-11-18 12:32:23,496 INFO L425 ceAbstractionStarter]: For program point fmin_doubleEXIT(lines 45 52) no Hoare annotation was computed. [2018-11-18 12:32:23,496 INFO L425 ceAbstractionStarter]: For program point L51(line 51) no Hoare annotation was computed. [2018-11-18 12:32:23,496 INFO L425 ceAbstractionStarter]: For program point L51-2(line 51) no Hoare annotation was computed. [2018-11-18 12:32:23,496 INFO L421 ceAbstractionStarter]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (= fmin_double_~x |fmin_double_#in~x|))) (or (and (exists ((|v_q#valueAsBitvector_4| (_ BitVec 64))) (and (= |fmin_double_#in~x| (fp ((_ extract 63 63) |v_q#valueAsBitvector_4|) ((_ extract 62 52) |v_q#valueAsBitvector_4|) ((_ extract 51 0) |v_q#valueAsBitvector_4|))) (not (bvule ((_ extract 63 32) |v_q#valueAsBitvector_4|) (_ bv1048575 32))))) .cse0) (and (= fmin_double_~y |fmin_double_#in~y|) .cse0))) [2018-11-18 12:32:23,497 INFO L425 ceAbstractionStarter]: For program point L48-1(lines 48 49) no Hoare annotation was computed. [2018-11-18 12:32:23,497 INFO L421 ceAbstractionStarter]: At program point L46(line 46) the Hoare annotation is: (and (= fmin_double_~y |fmin_double_#in~y|) (= fmin_double_~x |fmin_double_#in~x|)) [2018-11-18 12:32:23,497 INFO L425 ceAbstractionStarter]: For program point L46-1(lines 46 47) no Hoare annotation was computed. [2018-11-18 12:32:23,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 12:32:23 BoogieIcfgContainer [2018-11-18 12:32:23,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 12:32:23,505 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:32:23,505 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:32:23,505 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:32:23,505 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:32:12" (3/4) ... [2018-11-18 12:32:23,507 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 12:32:23,511 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_double [2018-11-18 12:32:23,511 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 12:32:23,511 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-11-18 12:32:23,512 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_double [2018-11-18 12:32:23,512 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_double [2018-11-18 12:32:23,512 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 12:32:23,515 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2018-11-18 12:32:23,515 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-11-18 12:32:23,516 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 12:32:23,533 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-11-18 12:32:23,534 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-11-18 12:32:23,555 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c1746f98-704e-4fea-a2fd-338af60a689f/bin-2019/uautomizer/witness.graphml [2018-11-18 12:32:23,555 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:32:23,556 INFO L168 Benchmark]: Toolchain (without parser) took 11425.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 207.1 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -125.2 MB). Peak memory consumption was 81.8 MB. Max. memory is 11.5 GB. [2018-11-18 12:32:23,556 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:32:23,556 INFO L168 Benchmark]: CACSL2BoogieTranslator took 196.18 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 934.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 12:32:23,557 INFO L168 Benchmark]: Boogie Preprocessor took 81.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 934.7 MB in the beginning and 1.1 GB in the end (delta: -197.3 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. [2018-11-18 12:32:23,557 INFO L168 Benchmark]: RCFGBuilder took 273.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2018-11-18 12:32:23,557 INFO L168 Benchmark]: TraceAbstraction took 10820.50 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 62.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 37.4 MB). Peak memory consumption was 99.8 MB. Max. memory is 11.5 GB. [2018-11-18 12:32:23,557 INFO L168 Benchmark]: Witness Printer took 49.97 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:32:23,559 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 196.18 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 934.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 81.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 934.7 MB in the beginning and 1.1 GB in the end (delta: -197.3 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 273.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 10820.50 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 62.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 37.4 MB). Peak memory consumption was 99.8 MB. Max. memory is 11.5 GB. * Witness Printer took 49.97 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 80]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 45 locations, 1 error locations. SAFE Result, 10.7s OverallTime, 12 OverallIterations, 2 TraceHistogramMax, 8.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 478 SDtfs, 183 SDslu, 1586 SDs, 0 SdLazy, 601 SolverSat, 20 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 7.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 360 GetRequests, 284 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=9, 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, 12 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 41 PreInvPairs, 50 NumberOfFragments, 69 HoareAnnotationTreeSize, 41 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 43 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 345 NumberOfCodeBlocks, 345 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 333 ConstructedInterpolants, 40 QuantifiedInterpolants, 43044 SizeOfPredicates, 29 NumberOfNonLiveVariables, 1045 ConjunctsInSsa, 77 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 42/42 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...