./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1250_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_576636c5-2153-4b3f-9b1e-f4a2837b3342/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/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 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 ......................................................................................................................................................................................................................................................................................................................................................................................... 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_576636c5-2153-4b3f-9b1e-f4a2837b3342/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/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 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 10:59:39,702 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 10:59:39,704 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 10:59:39,712 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 10:59:39,712 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 10:59:39,712 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 10:59:39,713 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 10:59:39,714 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 10:59:39,715 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 10:59:39,716 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 10:59:39,717 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 10:59:39,717 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 10:59:39,717 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 10:59:39,718 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 10:59:39,719 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 10:59:39,719 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 10:59:39,720 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 10:59:39,721 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 10:59:39,722 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 10:59:39,723 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 10:59:39,724 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 10:59:39,724 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 10:59:39,726 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 10:59:39,726 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 10:59:39,726 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 10:59:39,727 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 10:59:39,727 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 10:59:39,728 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 10:59:39,728 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 10:59:39,729 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 10:59:39,729 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 10:59:39,730 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 10:59:39,730 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 10:59:39,730 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 10:59:39,731 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 10:59:39,731 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 10:59:39,731 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 10:59:39,740 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 10:59:39,741 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 10:59:39,741 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 10:59:39,741 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 10:59:39,742 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 10:59:39,742 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 10:59:39,742 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 10:59:39,742 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 10:59:39,742 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 10:59:39,743 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 10:59:39,743 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 10:59:39,743 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 10:59:39,743 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 10:59:39,743 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 10:59:39,743 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 10:59:39,743 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 10:59:39,744 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 10:59:39,744 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 10:59:39,744 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 10:59:39,744 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 10:59:39,744 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 10:59:39,744 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 10:59:39,744 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 10:59:39,745 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:59:39,745 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 10:59:39,745 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 10:59:39,745 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 10:59:39,745 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 10:59:39,745 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 10:59:39,745 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 10:59:39,746 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_576636c5-2153-4b3f-9b1e-f4a2837b3342/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 -> 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 [2018-11-18 10:59:39,767 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 10:59:39,774 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 10:59:39,776 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 10:59:39,777 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 10:59:39,777 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 10:59:39,777 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-11-18 10:59:39,814 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/bin-2019/uautomizer/data/89fa4ad24/098db2af408943d283ef38ef626966ae/FLAG0392268ac [2018-11-18 10:59:40,107 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 10:59:40,108 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-11-18 10:59:40,112 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/bin-2019/uautomizer/data/89fa4ad24/098db2af408943d283ef38ef626966ae/FLAG0392268ac [2018-11-18 10:59:40,122 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/bin-2019/uautomizer/data/89fa4ad24/098db2af408943d283ef38ef626966ae [2018-11-18 10:59:40,124 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 10:59:40,125 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 10:59:40,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 10:59:40,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 10:59:40,127 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 10:59:40,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:59:40" (1/1) ... [2018-11-18 10:59:40,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e791d46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:40, skipping insertion in model container [2018-11-18 10:59:40,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:59:40" (1/1) ... [2018-11-18 10:59:40,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 10:59:40,147 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 10:59:40,253 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:59:40,255 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 10:59:40,269 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:59:40,282 INFO L195 MainTranslator]: Completed translation [2018-11-18 10:59:40,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:40 WrapperNode [2018-11-18 10:59:40,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 10:59:40,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 10:59:40,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 10:59:40,283 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 10:59:40,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:40" (1/1) ... [2018-11-18 10:59:40,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:40" (1/1) ... [2018-11-18 10:59:40,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:40" (1/1) ... [2018-11-18 10:59:40,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:40" (1/1) ... [2018-11-18 10:59:40,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:40" (1/1) ... [2018-11-18 10:59:40,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:40" (1/1) ... [2018-11-18 10:59:40,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:40" (1/1) ... [2018-11-18 10:59:40,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 10:59:40,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 10:59:40,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 10:59:40,344 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 10:59:40,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/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 10:59:40,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 10:59:40,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 10:59:40,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-18 10:59:40,381 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-11-18 10:59:40,381 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-18 10:59:40,381 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 10:59:40,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 10:59:40,381 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-18 10:59:40,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 10:59:40,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 10:59:40,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 10:59:40,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 10:59:40,382 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-11-18 10:59:40,382 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-18 10:59:40,382 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 10:59:40,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 10:59:40,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 10:59:40,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 10:59:40,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 10:59:40,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-11-18 10:59:40,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-18 10:59:40,562 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 10:59:40,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:59:40 BoogieIcfgContainer [2018-11-18 10:59:40,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 10:59:40,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 10:59:40,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 10:59:40,565 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 10:59:40,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:59:40" (1/3) ... [2018-11-18 10:59:40,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ee786a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:59:40, skipping insertion in model container [2018-11-18 10:59:40,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:40" (2/3) ... [2018-11-18 10:59:40,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ee786a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:59:40, skipping insertion in model container [2018-11-18 10:59:40,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:59:40" (3/3) ... [2018-11-18 10:59:40,568 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250_true-unreach-call.c [2018-11-18 10:59:40,575 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 10:59:40,581 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 10:59:40,598 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 10:59:40,630 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 10:59:40,631 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 10:59:40,631 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 10:59:40,631 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 10:59:40,631 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 10:59:40,631 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 10:59:40,631 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 10:59:40,632 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 10:59:40,632 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 10:59:40,647 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-11-18 10:59:40,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 10:59:40,652 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:59:40,653 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 10:59:40,655 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:59:40,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:40,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1839789942, now seen corresponding path program 1 times [2018-11-18 10:59:40,661 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:59:40,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:59:40,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:40,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:59:40,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:40,773 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 10:59:40,775 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:59:40,775 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 10:59:40,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 10:59:40,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 10:59:40,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 10:59:40,794 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-11-18 10:59:40,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:59:40,816 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2018-11-18 10:59:40,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 10:59:40,818 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-11-18 10:59:40,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:59:40,825 INFO L225 Difference]: With dead ends: 71 [2018-11-18 10:59:40,825 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 10:59:40,828 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 10:59:40,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 10:59:40,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-18 10:59:40,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 10:59:40,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-11-18 10:59:40,861 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2018-11-18 10:59:40,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:59:40,861 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-11-18 10:59:40,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 10:59:40,862 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-11-18 10:59:40,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 10:59:40,863 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:59:40,863 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, 1] [2018-11-18 10:59:40,864 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:59:40,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:40,864 INFO L82 PathProgramCache]: Analyzing trace with hash 561427005, now seen corresponding path program 1 times [2018-11-18 10:59:40,864 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:59:40,864 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:59:40,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:40,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:59:40,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:40,927 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 10:59:40,927 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:59:40,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 10:59:40,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 10:59:40,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 10:59:40,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 10:59:40,930 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-11-18 10:59:40,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:59:40,966 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-11-18 10:59:40,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 10:59:40,966 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-18 10:59:40,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:59:40,969 INFO L225 Difference]: With dead ends: 51 [2018-11-18 10:59:40,969 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 10:59:40,969 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 10:59:40,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 10:59:40,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-18 10:59:40,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 10:59:40,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-18 10:59:40,978 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2018-11-18 10:59:40,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:59:40,979 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-18 10:59:40,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 10:59:40,979 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-18 10:59:40,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 10:59:40,980 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:59:40,980 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, 1, 1, 1, 1] [2018-11-18 10:59:40,980 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:59:40,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:40,981 INFO L82 PathProgramCache]: Analyzing trace with hash 2075679825, now seen corresponding path program 1 times [2018-11-18 10:59:40,981 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:59:40,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:59:40,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:40,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:59:40,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:41,031 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 10:59:41,032 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:59:41,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 10:59:41,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 10:59:41,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 10:59:41,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 10:59:41,033 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-11-18 10:59:41,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:59:41,062 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2018-11-18 10:59:41,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 10:59:41,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-18 10:59:41,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:59:41,064 INFO L225 Difference]: With dead ends: 55 [2018-11-18 10:59:41,064 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 10:59:41,064 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 10:59:41,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 10:59:41,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-11-18 10:59:41,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 10:59:41,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-18 10:59:41,070 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2018-11-18 10:59:41,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:59:41,070 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-18 10:59:41,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 10:59:41,071 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-18 10:59:41,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 10:59:41,071 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:59:41,071 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, 1, 1, 1, 1] [2018-11-18 10:59:41,072 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:59:41,072 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:41,072 INFO L82 PathProgramCache]: Analyzing trace with hash -711735662, now seen corresponding path program 1 times [2018-11-18 10:59:41,072 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:59:41,072 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:59:41,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:41,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:59:41,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:59:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:59:41,122 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 10:59:41,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 10:59:41 BoogieIcfgContainer [2018-11-18 10:59:41,142 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 10:59:41,143 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 10:59:41,143 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 10:59:41,143 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 10:59:41,143 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:59:40" (3/4) ... [2018-11-18 10:59:41,146 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 10:59:41,146 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 10:59:41,147 INFO L168 Benchmark]: Toolchain (without parser) took 1022.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 953.8 MB in the beginning and 1.1 GB in the end (delta: -111.9 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. [2018-11-18 10:59:41,148 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 10:59:41,149 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.03 ms. Allocated memory is still 1.0 GB. Free memory was 953.8 MB in the beginning and 940.3 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-18 10:59:41,149 INFO L168 Benchmark]: Boogie Preprocessor took 60.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -195.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-18 10:59:41,150 INFO L168 Benchmark]: RCFGBuilder took 218.86 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: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2018-11-18 10:59:41,150 INFO L168 Benchmark]: TraceAbstraction took 579.53 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: 51.7 MB). Peak memory consumption was 51.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:59:41,151 INFO L168 Benchmark]: Witness Printer took 3.72 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 10:59:41,153 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 157.03 ms. Allocated memory is still 1.0 GB. Free memory was 953.8 MB in the beginning and 940.3 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 60.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -195.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 218.86 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: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 579.53 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: 51.7 MB). Peak memory consumption was 51.7 MB. Max. memory is 11.5 GB. * Witness Printer took 3.72 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: 65]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 54, overapproximation of someBinaryArithmeticFLOAToperation at line 60. Possible FailurePath: [L60] float x = 0.0f / 0.0f; [L61] float y = 0.0f / 0.0f; [L62] CALL, EXPR fmax_float(x, y) VAL [\old(x)=4286578692, \old(y)=4286578690] [L43] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578692] [L20] __uint32_t w; VAL [\old(x)=4286578692, x=4286578692] [L23] FCALL ieee_float_shape_type gf_u; [L24] FCALL gf_u.value = (x) [L25] EXPR, FCALL gf_u.word [L25] (w) = gf_u.word [L26] COND FALSE !(0) VAL [\old(x)=4286578692, w=4286578689, x=4286578692] [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=4286578692, w=4286578689, x=4286578692] [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=4286578692, w=4286578689, x=4286578692] [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=4286578692, w=4286578689, x=4286578692] [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] RET return 0; VAL [\old(x)=4286578692, \result=0, w=4286578689, x=4286578692] [L43] EXPR __fpclassify_float(x) VAL [\old(x)=4286578692, \old(y)=4286578690, __fpclassify_float(x)=0, x=4286578692, y=4286578690] [L43] COND TRUE __fpclassify_float(x) == 0 [L44] RET return y; VAL [\old(x)=4286578692, \old(y)=4286578690, \result=4286578690, x=4286578692, y=4286578690] [L62] EXPR fmax_float(x, y) VAL [fmax_float(x, y)=4286578690, x=4286578692, y=4286578690] [L62] float res = fmax_float(x, y); [L64] CALL, EXPR isnan_float(res) VAL [\old(x)=4286578690] [L54] RET return x != x; VAL [\old(x)=4286578690, \result=0, x=4286578690] [L64] EXPR isnan_float(res) VAL [isnan_float(res)=0, res=4286578690, x=4286578692, y=4286578690] [L64] COND TRUE !isnan_float(res) [L65] __VERIFIER_error() VAL [res=4286578690, x=4286578692, y=4286578690] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 129 SDtfs, 0 SDslu, 152 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=40occurred 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, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2582 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 10:59:42,646 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 10:59:42,647 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 10:59:42,656 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 10:59:42,656 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 10:59:42,657 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 10:59:42,657 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 10:59:42,659 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 10:59:42,660 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 10:59:42,660 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 10:59:42,661 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 10:59:42,661 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 10:59:42,661 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 10:59:42,662 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 10:59:42,663 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 10:59:42,663 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 10:59:42,664 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 10:59:42,665 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 10:59:42,666 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 10:59:42,667 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 10:59:42,668 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 10:59:42,669 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 10:59:42,670 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 10:59:42,670 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 10:59:42,671 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 10:59:42,671 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 10:59:42,672 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 10:59:42,672 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 10:59:42,673 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 10:59:42,674 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 10:59:42,674 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 10:59:42,674 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 10:59:42,675 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 10:59:42,675 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 10:59:42,675 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 10:59:42,676 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 10:59:42,676 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-18 10:59:42,686 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 10:59:42,687 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 10:59:42,687 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 10:59:42,687 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 10:59:42,688 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 10:59:42,688 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 10:59:42,688 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 10:59:42,688 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 10:59:42,688 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 10:59:42,689 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 10:59:42,689 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 10:59:42,689 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 10:59:42,689 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 10:59:42,689 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 10:59:42,689 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 10:59:42,689 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 10:59:42,689 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 10:59:42,690 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 10:59:42,690 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 10:59:42,690 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 10:59:42,690 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 10:59:42,690 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 10:59:42,690 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 10:59:42,690 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 10:59:42,691 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:59:42,691 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 10:59:42,691 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 10:59:42,691 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 10:59:42,691 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-18 10:59:42,691 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 10:59:42,691 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 10:59:42,691 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 10:59:42,692 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_576636c5-2153-4b3f-9b1e-f4a2837b3342/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 -> 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 [2018-11-18 10:59:42,721 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 10:59:42,730 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 10:59:42,732 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 10:59:42,733 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 10:59:42,734 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 10:59:42,734 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-11-18 10:59:42,768 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/bin-2019/uautomizer/data/0ad9b0b1e/213d8d1c1ab94b83a7cb983002310459/FLAGee3e4e45d [2018-11-18 10:59:43,164 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 10:59:43,164 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-11-18 10:59:43,169 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/bin-2019/uautomizer/data/0ad9b0b1e/213d8d1c1ab94b83a7cb983002310459/FLAGee3e4e45d [2018-11-18 10:59:43,179 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/bin-2019/uautomizer/data/0ad9b0b1e/213d8d1c1ab94b83a7cb983002310459 [2018-11-18 10:59:43,182 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 10:59:43,183 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 10:59:43,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 10:59:43,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 10:59:43,188 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 10:59:43,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:59:43" (1/1) ... [2018-11-18 10:59:43,191 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 10:59:43, skipping insertion in model container [2018-11-18 10:59:43,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:59:43" (1/1) ... [2018-11-18 10:59:43,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 10:59:43,219 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 10:59:43,364 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:59:43,368 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 10:59:43,386 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:59:43,404 INFO L195 MainTranslator]: Completed translation [2018-11-18 10:59:43,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:43 WrapperNode [2018-11-18 10:59:43,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 10:59:43,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 10:59:43,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 10:59:43,406 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 10:59:43,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:43" (1/1) ... [2018-11-18 10:59:43,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:43" (1/1) ... [2018-11-18 10:59:43,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:43" (1/1) ... [2018-11-18 10:59:43,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:43" (1/1) ... [2018-11-18 10:59:43,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:43" (1/1) ... [2018-11-18 10:59:43,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:43" (1/1) ... [2018-11-18 10:59:43,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:43" (1/1) ... [2018-11-18 10:59:43,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 10:59:43,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 10:59:43,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 10:59:43,440 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 10:59:43,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/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 10:59:43,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 10:59:43,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 10:59:43,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-18 10:59:43,544 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-11-18 10:59:43,544 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-18 10:59:43,544 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 10:59:43,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 10:59:43,544 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-18 10:59:43,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 10:59:43,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-18 10:59:43,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 10:59:43,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 10:59:43,545 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-11-18 10:59:43,545 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-18 10:59:43,545 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 10:59:43,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 10:59:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 10:59:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-11-18 10:59:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-11-18 10:59:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 10:59:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-11-18 10:59:43,711 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 10:59:43,770 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 10:59:43,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:59:43 BoogieIcfgContainer [2018-11-18 10:59:43,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 10:59:43,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 10:59:43,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 10:59:43,774 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 10:59:43,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:59:43" (1/3) ... [2018-11-18 10:59:43,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198593b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:59:43, skipping insertion in model container [2018-11-18 10:59:43,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:59:43" (2/3) ... [2018-11-18 10:59:43,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198593b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:59:43, skipping insertion in model container [2018-11-18 10:59:43,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:59:43" (3/3) ... [2018-11-18 10:59:43,777 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250_true-unreach-call.c [2018-11-18 10:59:43,783 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 10:59:43,788 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 10:59:43,796 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 10:59:43,814 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 10:59:43,814 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 10:59:43,814 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 10:59:43,814 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 10:59:43,815 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 10:59:43,815 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 10:59:43,815 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 10:59:43,815 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 10:59:43,815 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 10:59:43,826 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-11-18 10:59:43,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 10:59:43,830 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:59:43,831 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 10:59:43,833 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:59:43,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:43,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1772388333, now seen corresponding path program 1 times [2018-11-18 10:59:43,840 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 10:59:43,840 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/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 10:59:43,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:59:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:43,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:43,925 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 10:59:43,925 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 10:59:43,937 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:59:43,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 10:59:43,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 10:59:43,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 10:59:43,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 10:59:43,957 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2018-11-18 10:59:43,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:59:43,980 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2018-11-18 10:59:43,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 10:59:43,982 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-11-18 10:59:43,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:59:43,991 INFO L225 Difference]: With dead ends: 65 [2018-11-18 10:59:43,992 INFO L226 Difference]: Without dead ends: 33 [2018-11-18 10:59:43,995 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 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 10:59:44,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-18 10:59:44,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-18 10:59:44,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 10:59:44,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2018-11-18 10:59:44,028 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 24 [2018-11-18 10:59:44,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:59:44,029 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2018-11-18 10:59:44,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 10:59:44,029 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2018-11-18 10:59:44,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 10:59:44,031 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:59:44,031 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 10:59:44,032 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:59:44,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:44,032 INFO L82 PathProgramCache]: Analyzing trace with hash -450987661, now seen corresponding path program 1 times [2018-11-18 10:59:44,032 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 10:59:44,033 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/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 10:59:44,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:59:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:44,090 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:44,122 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 10:59:44,123 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 10:59:44,131 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:59:44,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 10:59:44,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 10:59:44,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 10:59:44,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 10:59:44,133 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 4 states. [2018-11-18 10:59:44,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:59:44,159 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2018-11-18 10:59:44,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 10:59:44,160 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-18 10:59:44,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:59:44,162 INFO L225 Difference]: With dead ends: 46 [2018-11-18 10:59:44,162 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 10:59:44,163 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 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 10:59:44,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 10:59:44,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-18 10:59:44,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 10:59:44,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-18 10:59:44,173 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 25 [2018-11-18 10:59:44,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:59:44,173 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-18 10:59:44,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 10:59:44,173 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-18 10:59:44,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 10:59:44,174 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:59:44,175 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 10:59:44,175 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:59:44,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:44,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1385640784, now seen corresponding path program 1 times [2018-11-18 10:59:44,176 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 10:59:44,176 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/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 10:59:44,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:59:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:44,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:44,244 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 10:59:44,244 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 10:59:44,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:59:44,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 10:59:44,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 10:59:44,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 10:59:44,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 10:59:44,253 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-11-18 10:59:44,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:59:44,274 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-18 10:59:44,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 10:59:44,275 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-11-18 10:59:44,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:59:44,276 INFO L225 Difference]: With dead ends: 49 [2018-11-18 10:59:44,276 INFO L226 Difference]: Without dead ends: 39 [2018-11-18 10:59:44,276 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 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 10:59:44,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-18 10:59:44,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-18 10:59:44,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 10:59:44,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-18 10:59:44,281 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 26 [2018-11-18 10:59:44,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:59:44,281 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-18 10:59:44,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 10:59:44,281 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-18 10:59:44,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 10:59:44,282 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:59:44,282 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, 1] [2018-11-18 10:59:44,282 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:59:44,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:44,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1312935703, now seen corresponding path program 1 times [2018-11-18 10:59:44,283 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 10:59:44,283 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/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 10:59:44,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:59:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:44,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:44,331 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 10:59:44,331 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 10:59:44,340 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:59:44,340 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 10:59:44,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 10:59:44,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 10:59:44,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 10:59:44,341 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-11-18 10:59:44,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:59:44,364 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-18 10:59:44,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 10:59:44,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-18 10:59:44,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:59:44,366 INFO L225 Difference]: With dead ends: 49 [2018-11-18 10:59:44,366 INFO L226 Difference]: Without dead ends: 39 [2018-11-18 10:59:44,367 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 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 10:59:44,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-18 10:59:44,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-18 10:59:44,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 10:59:44,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-18 10:59:44,370 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 27 [2018-11-18 10:59:44,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:59:44,371 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-18 10:59:44,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 10:59:44,371 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-18 10:59:44,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 10:59:44,371 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:59:44,371 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, 1, 1] [2018-11-18 10:59:44,372 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:59:44,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:44,372 INFO L82 PathProgramCache]: Analyzing trace with hash -2114533836, now seen corresponding path program 1 times [2018-11-18 10:59:44,372 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 10:59:44,372 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/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 10:59:44,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:59:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:44,405 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:44,418 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 10:59:44,418 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 10:59:44,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:59:44,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 10:59:44,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 10:59:44,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 10:59:44,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 10:59:44,434 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-11-18 10:59:44,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:59:44,447 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-18 10:59:44,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 10:59:44,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-11-18 10:59:44,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:59:44,449 INFO L225 Difference]: With dead ends: 49 [2018-11-18 10:59:44,449 INFO L226 Difference]: Without dead ends: 39 [2018-11-18 10:59:44,449 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 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 10:59:44,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-18 10:59:44,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-18 10:59:44,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 10:59:44,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-18 10:59:44,454 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 28 [2018-11-18 10:59:44,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:59:44,454 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-18 10:59:44,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 10:59:44,455 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-18 10:59:44,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 10:59:44,455 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:59:44,455 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, 1, 1] [2018-11-18 10:59:44,456 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:59:44,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:44,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1887030453, now seen corresponding path program 1 times [2018-11-18 10:59:44,456 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 10:59:44,456 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/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 10:59:44,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:59:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:44,491 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:44,618 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 10:59:44,619 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 10:59:44,628 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:59:44,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-18 10:59:44,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 10:59:44,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 10:59:44,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-18 10:59:44,629 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 9 states. [2018-11-18 10:59:44,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:59:44,836 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-11-18 10:59:44,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 10:59:44,836 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-11-18 10:59:44,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:59:44,837 INFO L225 Difference]: With dead ends: 43 [2018-11-18 10:59:44,837 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 10:59:44,838 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-11-18 10:59:44,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 10:59:44,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-11-18 10:59:44,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 10:59:44,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2018-11-18 10:59:44,841 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 28 [2018-11-18 10:59:44,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:59:44,842 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2018-11-18 10:59:44,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 10:59:44,842 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2018-11-18 10:59:44,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-18 10:59:44,844 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:59:44,844 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] [2018-11-18 10:59:44,844 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:59:44,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:44,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1207042909, now seen corresponding path program 1 times [2018-11-18 10:59:44,845 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 10:59:44,845 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/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 10:59:44,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:59:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:44,902 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:44,928 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 10:59:44,928 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 10:59:44,940 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:59:44,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 10:59:44,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 10:59:44,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 10:59:44,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 10:59:44,941 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 4 states. [2018-11-18 10:59:44,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:59:44,961 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-11-18 10:59:44,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 10:59:44,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-11-18 10:59:44,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:59:44,962 INFO L225 Difference]: With dead ends: 46 [2018-11-18 10:59:44,962 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 10:59:44,963 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 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 10:59:44,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 10:59:44,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-18 10:59:44,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 10:59:44,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-11-18 10:59:44,966 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 33 [2018-11-18 10:59:44,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:59:44,966 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-11-18 10:59:44,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 10:59:44,966 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-11-18 10:59:44,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-18 10:59:44,967 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:59:44,967 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, 1] [2018-11-18 10:59:44,967 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:59:44,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:44,968 INFO L82 PathProgramCache]: Analyzing trace with hash -722081606, now seen corresponding path program 1 times [2018-11-18 10:59:44,968 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 10:59:44,968 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/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 10:59:44,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:59:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:45,021 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:45,038 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 10:59:45,038 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 10:59:45,049 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:59:45,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 10:59:45,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 10:59:45,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 10:59:45,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 10:59:45,050 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-11-18 10:59:45,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:59:45,069 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2018-11-18 10:59:45,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 10:59:45,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-11-18 10:59:45,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:59:45,070 INFO L225 Difference]: With dead ends: 49 [2018-11-18 10:59:45,070 INFO L226 Difference]: Without dead ends: 39 [2018-11-18 10:59:45,071 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 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 10:59:45,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-18 10:59:45,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-18 10:59:45,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 10:59:45,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-11-18 10:59:45,075 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 34 [2018-11-18 10:59:45,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:59:45,075 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-11-18 10:59:45,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 10:59:45,075 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-11-18 10:59:45,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-18 10:59:45,076 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:59:45,076 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] [2018-11-18 10:59:45,077 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:59:45,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:45,077 INFO L82 PathProgramCache]: Analyzing trace with hash 57903486, now seen corresponding path program 1 times [2018-11-18 10:59:45,077 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 10:59:45,077 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/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 10:59:45,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:59:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:45,137 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:45,212 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 10:59:45,212 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 10:59:45,219 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:59:45,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 10:59:45,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 10:59:45,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 10:59:45,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 10:59:45,220 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 5 states. [2018-11-18 10:59:45,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:59:45,294 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2018-11-18 10:59:45,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 10:59:45,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-11-18 10:59:45,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:59:45,296 INFO L225 Difference]: With dead ends: 47 [2018-11-18 10:59:45,296 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 10:59:45,297 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 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 10:59:45,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 10:59:45,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-18 10:59:45,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 10:59:45,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-11-18 10:59:45,301 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 35 [2018-11-18 10:59:45,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:59:45,301 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-11-18 10:59:45,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 10:59:45,301 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-11-18 10:59:45,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-18 10:59:45,302 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:59:45,302 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] [2018-11-18 10:59:45,302 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:59:45,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:45,303 INFO L82 PathProgramCache]: Analyzing trace with hash 758968064, now seen corresponding path program 1 times [2018-11-18 10:59:45,303 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 10:59:45,303 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/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 10:59:45,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:59:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:45,348 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:45,443 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 10:59:45,443 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 10:59:45,450 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:59:45,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-11-18 10:59:45,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 10:59:45,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 10:59:45,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-11-18 10:59:45,451 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 10 states. [2018-11-18 10:59:45,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:59:45,657 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2018-11-18 10:59:45,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 10:59:45,657 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-11-18 10:59:45,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:59:45,658 INFO L225 Difference]: With dead ends: 43 [2018-11-18 10:59:45,658 INFO L226 Difference]: Without dead ends: 33 [2018-11-18 10:59:45,658 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-11-18 10:59:45,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-18 10:59:45,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-18 10:59:45,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 10:59:45,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-18 10:59:45,662 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-11-18 10:59:45,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:59:45,662 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-18 10:59:45,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 10:59:45,663 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-18 10:59:45,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-18 10:59:45,663 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:59:45,664 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, 1, 1] [2018-11-18 10:59:45,664 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:59:45,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:45,664 INFO L82 PathProgramCache]: Analyzing trace with hash 253204871, now seen corresponding path program 1 times [2018-11-18 10:59:45,665 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 10:59:45,665 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/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 10:59:45,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:59:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:45,698 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:45,706 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 10:59:45,706 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 10:59:45,713 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:59:45,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 10:59:45,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 10:59:45,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 10:59:45,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 10:59:45,714 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-11-18 10:59:45,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:59:45,721 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-11-18 10:59:45,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 10:59:45,722 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-11-18 10:59:45,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:59:45,722 INFO L225 Difference]: With dead ends: 46 [2018-11-18 10:59:45,722 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 10:59:45,723 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 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 10:59:45,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 10:59:45,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-18 10:59:45,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 10:59:45,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-18 10:59:45,725 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-11-18 10:59:45,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:59:45,726 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-18 10:59:45,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 10:59:45,726 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-18 10:59:45,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-18 10:59:45,727 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:59:45,727 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, 1, 1, 1] [2018-11-18 10:59:45,727 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:59:45,727 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:45,727 INFO L82 PathProgramCache]: Analyzing trace with hash -751297442, now seen corresponding path program 1 times [2018-11-18 10:59:45,728 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 10:59:45,728 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/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 10:59:45,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:59:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:45,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:45,790 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 10:59:45,790 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 10:59:45,798 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:59:45,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 10:59:45,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 10:59:45,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 10:59:45,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 10:59:45,798 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-11-18 10:59:45,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:59:45,807 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-11-18 10:59:45,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 10:59:45,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-11-18 10:59:45,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:59:45,809 INFO L225 Difference]: With dead ends: 46 [2018-11-18 10:59:45,809 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 10:59:45,809 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 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 10:59:45,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 10:59:45,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-18 10:59:45,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 10:59:45,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-18 10:59:45,813 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 36 [2018-11-18 10:59:45,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:59:45,814 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-18 10:59:45,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 10:59:45,814 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-18 10:59:45,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-18 10:59:45,815 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:59:45,815 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, 1, 1, 1] [2018-11-18 10:59:45,815 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:59:45,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:59:45,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1044700449, now seen corresponding path program 1 times [2018-11-18 10:59:45,816 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 10:59:45,816 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/bin-2019/uautomizer/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-11-18 10:59:45,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:59:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:59:45,863 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:59:45,993 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 10:59:45,993 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 10:59:46,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:59:46,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-18 10:59:46,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 10:59:46,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 10:59:46,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-18 10:59:46,003 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 9 states. [2018-11-18 10:59:46,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:59:46,151 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-18 10:59:46,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 10:59:46,151 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-11-18 10:59:46,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:59:46,151 INFO L225 Difference]: With dead ends: 33 [2018-11-18 10:59:46,152 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 10:59:46,152 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-11-18 10:59:46,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 10:59:46,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 10:59:46,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 10:59:46,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 10:59:46,153 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2018-11-18 10:59:46,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:59:46,153 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 10:59:46,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 10:59:46,154 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 10:59:46,154 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 10:59:46,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 10:59:46,262 INFO L425 ceAbstractionStarter]: For program point isnan_floatFINAL(line 54) no Hoare annotation was computed. [2018-11-18 10:59:46,262 INFO L428 ceAbstractionStarter]: At program point isnan_floatENTRY(line 54) the Hoare annotation is: true [2018-11-18 10:59:46,262 INFO L425 ceAbstractionStarter]: For program point isnan_floatEXIT(line 54) no Hoare annotation was computed. [2018-11-18 10:59:46,263 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 10:59:46,263 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 10:59:46,263 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 10:59:46,263 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 10:59:46,263 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 10:59:46,263 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 10:59:46,263 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 10:59:46,263 INFO L425 ceAbstractionStarter]: For program point L65(line 65) no Hoare annotation was computed. [2018-11-18 10:59:46,264 INFO L421 ceAbstractionStarter]: At program point L64(line 64) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (and (= main_~res~0 .cse0) (= main_~y~0 .cse0))) [2018-11-18 10:59:46,264 INFO L425 ceAbstractionStarter]: For program point L64-1(lines 64 67) no Hoare annotation was computed. [2018-11-18 10:59:46,264 INFO L421 ceAbstractionStarter]: At program point L62(line 62) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (and (= main_~y~0 .cse0) (= main_~x~0 .cse0))) [2018-11-18 10:59:46,264 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 56 70) the Hoare annotation is: true [2018-11-18 10:59:46,264 INFO L425 ceAbstractionStarter]: For program point L62-1(line 62) no Hoare annotation was computed. [2018-11-18 10:59:46,264 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 56 70) no Hoare annotation was computed. [2018-11-18 10:59:46,264 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 65) no Hoare annotation was computed. [2018-11-18 10:59:46,265 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 56 70) no Hoare annotation was computed. [2018-11-18 10:59:46,266 INFO L425 ceAbstractionStarter]: For program point fmax_floatEXIT(lines 42 51) no Hoare annotation was computed. [2018-11-18 10:59:46,266 INFO L428 ceAbstractionStarter]: At program point fmax_floatENTRY(lines 42 51) the Hoare annotation is: true [2018-11-18 10:59:46,266 INFO L425 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2018-11-18 10:59:46,266 INFO L425 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2018-11-18 10:59:46,266 INFO L421 ceAbstractionStarter]: At program point L47(line 47) the Hoare annotation is: (and (= |fmax_float_#in~y| fmax_float_~y) (= |fmax_float_#in~x| fmax_float_~x)) [2018-11-18 10:59:46,266 INFO L425 ceAbstractionStarter]: For program point L47-1(lines 47 49) no Hoare annotation was computed. [2018-11-18 10:59:46,266 INFO L421 ceAbstractionStarter]: At program point L43(line 43) the Hoare annotation is: (and (= |fmax_float_#in~y| fmax_float_~y) (= |fmax_float_#in~x| fmax_float_~x)) [2018-11-18 10:59:46,266 INFO L425 ceAbstractionStarter]: For program point L43-1(lines 43 45) no Hoare annotation was computed. [2018-11-18 10:59:46,267 INFO L425 ceAbstractionStarter]: For program point fmax_floatFINAL(lines 42 51) no Hoare annotation was computed. [2018-11-18 10:59:46,267 INFO L425 ceAbstractionStarter]: For program point L33(lines 33 39) no Hoare annotation was computed. [2018-11-18 10:59:46,267 INFO L425 ceAbstractionStarter]: For program point __fpclassify_floatFINAL(lines 19 40) no Hoare annotation was computed. [2018-11-18 10:59:46,267 INFO L425 ceAbstractionStarter]: For program point L36(lines 36 39) no Hoare annotation was computed. [2018-11-18 10:59:46,267 INFO L425 ceAbstractionStarter]: For program point L30(lines 30 39) no Hoare annotation was computed. [2018-11-18 10:59:46,267 INFO L425 ceAbstractionStarter]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2018-11-18 10:59:46,267 INFO L428 ceAbstractionStarter]: At program point L22-3(lines 22 26) the Hoare annotation is: true [2018-11-18 10:59:46,267 INFO L425 ceAbstractionStarter]: For program point L22-4(lines 19 40) no Hoare annotation was computed. [2018-11-18 10:59:46,267 INFO L428 ceAbstractionStarter]: At program point __fpclassify_floatENTRY(lines 19 40) the Hoare annotation is: true [2018-11-18 10:59:46,268 INFO L425 ceAbstractionStarter]: For program point __fpclassify_floatEXIT(lines 19 40) no Hoare annotation was computed. [2018-11-18 10:59:46,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 10:59:46 BoogieIcfgContainer [2018-11-18 10:59:46,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 10:59:46,274 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 10:59:46,274 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 10:59:46,274 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 10:59:46,274 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:59:43" (3/4) ... [2018-11-18 10:59:46,278 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 10:59:46,284 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-11-18 10:59:46,284 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 10:59:46,285 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 10:59:46,285 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_float [2018-11-18 10:59:46,285 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-11-18 10:59:46,289 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-11-18 10:59:46,289 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-18 10:59:46,289 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 10:59:46,331 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_576636c5-2153-4b3f-9b1e-f4a2837b3342/bin-2019/uautomizer/witness.graphml [2018-11-18 10:59:46,331 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 10:59:46,332 INFO L168 Benchmark]: Toolchain (without parser) took 3149.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 950.8 MB in the beginning and 829.6 MB in the end (delta: 121.2 MB). Peak memory consumption was 270.1 MB. Max. memory is 11.5 GB. [2018-11-18 10:59:46,333 INFO L168 Benchmark]: CDTParser took 0.12 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 10:59:46,333 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.76 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 933.6 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. [2018-11-18 10:59:46,334 INFO L168 Benchmark]: Boogie Preprocessor took 33.86 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:59:46,334 INFO L168 Benchmark]: RCFGBuilder took 330.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -186.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:59:46,334 INFO L168 Benchmark]: TraceAbstraction took 2502.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 829.6 MB in the end (delta: 290.7 MB). Peak memory consumption was 290.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:59:46,335 INFO L168 Benchmark]: Witness Printer took 57.67 ms. Allocated memory is still 1.2 GB. Free memory is still 829.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:59:46,336 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 221.76 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 933.6 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.86 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 330.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -186.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2502.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 829.6 MB in the end (delta: 290.7 MB). Peak memory consumption was 290.7 MB. Max. memory is 11.5 GB. * Witness Printer took 57.67 ms. Allocated memory is still 1.2 GB. Free memory is still 829.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 65]: 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: 22]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. SAFE Result, 2.4s OverallTime, 13 OverallIterations, 2 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 498 SDtfs, 31 SDslu, 1316 SDs, 0 SdLazy, 215 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 13 MinimizatonAttempts, 19 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 28 PreInvPairs, 33 NumberOfFragments, 48 HoareAnnotationTreeSize, 28 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 402 NumberOfCodeBlocks, 402 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 389 ConstructedInterpolants, 3 QuantifiedInterpolants, 21567 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1053 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...