./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1231b_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1231b_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/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 c714d208cb0b1f96f572e8a6108248eb76c73a94 ................................................................................................................................................................................................................................................................................................................................................................................................. 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_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1231b_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/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 c714d208cb0b1f96f572e8a6108248eb76c73a94 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 02:55:12,493 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 02:55:12,494 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 02:55:12,500 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 02:55:12,500 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 02:55:12,501 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 02:55:12,501 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 02:55:12,502 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 02:55:12,503 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 02:55:12,503 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 02:55:12,504 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 02:55:12,504 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 02:55:12,504 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 02:55:12,505 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 02:55:12,505 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 02:55:12,506 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 02:55:12,506 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 02:55:12,507 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 02:55:12,508 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 02:55:12,508 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 02:55:12,509 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 02:55:12,509 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 02:55:12,511 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 02:55:12,511 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 02:55:12,511 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 02:55:12,511 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 02:55:12,512 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 02:55:12,512 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 02:55:12,512 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 02:55:12,513 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 02:55:12,513 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 02:55:12,513 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 02:55:12,514 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 02:55:12,514 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 02:55:12,514 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 02:55:12,514 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 02:55:12,515 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-02 02:55:12,522 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 02:55:12,522 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 02:55:12,522 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 02:55:12,522 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 02:55:12,523 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 02:55:12,523 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 02:55:12,523 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 02:55:12,523 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 02:55:12,523 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 02:55:12,523 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 02:55:12,523 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 02:55:12,523 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 02:55:12,523 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 02:55:12,524 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 02:55:12,524 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 02:55:12,524 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 02:55:12,524 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 02:55:12,524 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 02:55:12,524 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 02:55:12,524 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 02:55:12,524 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 02:55:12,524 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 02:55:12,524 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 02:55:12,524 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 02:55:12,525 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 02:55:12,525 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 02:55:12,525 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 02:55:12,525 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 02:55:12,525 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 02:55:12,525 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 02:55:12,525 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_bb4bf30a-d5c5-4a31-bb93-5deadf653266/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 -> c714d208cb0b1f96f572e8a6108248eb76c73a94 [2018-12-02 02:55:12,542 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 02:55:12,549 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 02:55:12,551 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 02:55:12,552 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 02:55:12,552 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 02:55:12,552 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1231b_true-unreach-call.c [2018-12-02 02:55:12,588 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/data/3455fc6e4/046865b1ce0b43ef976e1cd4a069de42/FLAG0382d89c9 [2018-12-02 02:55:12,929 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 02:55:12,930 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/sv-benchmarks/c/float-newlib/double_req_bl_1231b_true-unreach-call.c [2018-12-02 02:55:12,934 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/data/3455fc6e4/046865b1ce0b43ef976e1cd4a069de42/FLAG0382d89c9 [2018-12-02 02:55:13,316 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/data/3455fc6e4/046865b1ce0b43ef976e1cd4a069de42 [2018-12-02 02:55:13,317 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 02:55:13,318 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 02:55:13,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 02:55:13,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 02:55:13,321 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 02:55:13,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:55:13" (1/1) ... [2018-12-02 02:55:13,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43f5ef9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:55:13, skipping insertion in model container [2018-12-02 02:55:13,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:55:13" (1/1) ... [2018-12-02 02:55:13,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 02:55:13,339 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 02:55:13,436 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 02:55:13,438 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 02:55:13,453 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 02:55:13,465 INFO L195 MainTranslator]: Completed translation [2018-12-02 02:55:13,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:55:13 WrapperNode [2018-12-02 02:55:13,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 02:55:13,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 02:55:13,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 02:55:13,466 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 02:55:13,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:55:13" (1/1) ... [2018-12-02 02:55:13,476 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:55:13" (1/1) ... [2018-12-02 02:55:13,480 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 02:55:13,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 02:55:13,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 02:55:13,480 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 02:55:13,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:55:13" (1/1) ... [2018-12-02 02:55:13,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:55:13" (1/1) ... [2018-12-02 02:55:13,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:55:13" (1/1) ... [2018-12-02 02:55:13,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:55:13" (1/1) ... [2018-12-02 02:55:13,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:55:13" (1/1) ... [2018-12-02 02:55:13,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:55:13" (1/1) ... [2018-12-02 02:55:13,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:55:13" (1/1) ... [2018-12-02 02:55:13,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 02:55:13,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 02:55:13,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 02:55:13,528 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 02:55:13,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:55:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 02:55:13,558 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-12-02 02:55:13,558 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-12-02 02:55:13,558 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 02:55:13,558 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 02:55:13,558 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-02 02:55:13,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-02 02:55:13,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 02:55:13,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 02:55:13,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-02 02:55:13,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 02:55:13,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 02:55:13,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 02:55:13,559 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-12-02 02:55:13,559 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-12-02 02:55:13,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 02:55:13,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 02:55:13,725 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 02:55:13,725 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-02 02:55:13,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:55:13 BoogieIcfgContainer [2018-12-02 02:55:13,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 02:55:13,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 02:55:13,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 02:55:13,729 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 02:55:13,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:55:13" (1/3) ... [2018-12-02 02:55:13,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661f484b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:55:13, skipping insertion in model container [2018-12-02 02:55:13,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:55:13" (2/3) ... [2018-12-02 02:55:13,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661f484b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:55:13, skipping insertion in model container [2018-12-02 02:55:13,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:55:13" (3/3) ... [2018-12-02 02:55:13,732 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b_true-unreach-call.c [2018-12-02 02:55:13,741 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 02:55:13,747 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 02:55:13,757 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 02:55:13,774 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 02:55:13,775 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 02:55:13,775 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 02:55:13,775 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 02:55:13,775 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 02:55:13,775 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 02:55:13,775 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 02:55:13,775 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 02:55:13,775 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 02:55:13,788 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-12-02 02:55:13,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-02 02:55:13,791 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 02:55:13,792 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 02:55:13,793 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 02:55:13,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 02:55:13,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1977344027, now seen corresponding path program 1 times [2018-12-02 02:55:13,798 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 02:55:13,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 02:55:13,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 02:55:13,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 02:55:13,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 02:55:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 02:55:13,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 02:55:13,891 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 02:55:13,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 02:55:13,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 02:55:13,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 02:55:13,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 02:55:13,903 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-12-02 02:55:13,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 02:55:13,918 INFO L93 Difference]: Finished difference Result 69 states and 91 transitions. [2018-12-02 02:55:13,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 02:55:13,919 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2018-12-02 02:55:13,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 02:55:13,925 INFO L225 Difference]: With dead ends: 69 [2018-12-02 02:55:13,925 INFO L226 Difference]: Without dead ends: 37 [2018-12-02 02:55:13,927 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 02:55:13,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-12-02 02:55:13,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-12-02 02:55:13,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-02 02:55:13,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2018-12-02 02:55:13,953 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 27 [2018-12-02 02:55:13,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 02:55:13,953 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2018-12-02 02:55:13,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 02:55:13,954 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2018-12-02 02:55:13,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-02 02:55:13,955 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 02:55:13,955 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 02:55:13,955 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 02:55:13,956 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 02:55:13,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1791139434, now seen corresponding path program 1 times [2018-12-02 02:55:13,956 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 02:55:13,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 02:55:13,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 02:55:13,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 02:55:13,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 02:55:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 02:55:14,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 02:55:14,010 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 02:55:14,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 02:55:14,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 02:55:14,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 02:55:14,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 02:55:14,012 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 4 states. [2018-12-02 02:55:14,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 02:55:14,034 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2018-12-02 02:55:14,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 02:55:14,034 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-12-02 02:55:14,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 02:55:14,036 INFO L225 Difference]: With dead ends: 47 [2018-12-02 02:55:14,036 INFO L226 Difference]: Without dead ends: 41 [2018-12-02 02:55:14,036 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 02:55:14,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-02 02:55:14,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-02 02:55:14,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-02 02:55:14,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2018-12-02 02:55:14,041 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2018-12-02 02:55:14,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 02:55:14,041 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2018-12-02 02:55:14,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 02:55:14,041 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2018-12-02 02:55:14,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-02 02:55:14,042 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 02:55:14,042 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 02:55:14,042 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 02:55:14,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 02:55:14,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1399464020, now seen corresponding path program 1 times [2018-12-02 02:55:14,042 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 02:55:14,043 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 02:55:14,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 02:55:14,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 02:55:14,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 02:55:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 02:55:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 02:55:14,081 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 02:55:14,081 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 02:55:14,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 02:55:14,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 02:55:14,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 02:55:14,082 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 4 states. [2018-12-02 02:55:14,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 02:55:14,099 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2018-12-02 02:55:14,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 02:55:14,099 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-12-02 02:55:14,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 02:55:14,100 INFO L225 Difference]: With dead ends: 51 [2018-12-02 02:55:14,100 INFO L226 Difference]: Without dead ends: 45 [2018-12-02 02:55:14,100 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 02:55:14,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-12-02 02:55:14,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2018-12-02 02:55:14,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-02 02:55:14,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2018-12-02 02:55:14,103 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 31 [2018-12-02 02:55:14,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 02:55:14,104 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2018-12-02 02:55:14,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 02:55:14,104 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2018-12-02 02:55:14,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-02 02:55:14,104 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 02:55:14,104 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 02:55:14,104 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 02:55:14,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 02:55:14,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1202950515, now seen corresponding path program 1 times [2018-12-02 02:55:14,105 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 02:55:14,105 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 02:55:14,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 02:55:14,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 02:55:14,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 02:55:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 02:55:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 02:55:14,139 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 02:55:14,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:55:14 BoogieIcfgContainer [2018-12-02 02:55:14,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 02:55:14,156 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 02:55:14,156 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 02:55:14,156 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 02:55:14,157 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:55:13" (3/4) ... [2018-12-02 02:55:14,159 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 02:55:14,159 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 02:55:14,159 INFO L168 Benchmark]: Toolchain (without parser) took 841.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 952.2 MB in the beginning and 1.0 GB in the end (delta: -79.5 MB). Peak memory consumption was 37.9 MB. Max. memory is 11.5 GB. [2018-12-02 02:55:14,160 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 02:55:14,161 INFO L168 Benchmark]: CACSL2BoogieTranslator took 146.46 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 02:55:14,161 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.58 ms. Allocated memory is still 1.0 GB. Free memory was 941.5 MB in the beginning and 938.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-02 02:55:14,161 INFO L168 Benchmark]: Boogie Preprocessor took 46.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 938.8 MB in the beginning and 1.1 GB in the end (delta: -173.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2018-12-02 02:55:14,162 INFO L168 Benchmark]: RCFGBuilder took 198.03 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2018-12-02 02:55:14,162 INFO L168 Benchmark]: TraceAbstraction took 430.10 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 55.8 MB). Peak memory consumption was 55.8 MB. Max. memory is 11.5 GB. [2018-12-02 02:55:14,162 INFO L168 Benchmark]: Witness Printer took 2.72 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 02:55:14,164 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 146.46 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.58 ms. Allocated memory is still 1.0 GB. Free memory was 941.5 MB in the beginning and 938.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 46.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 938.8 MB in the beginning and 1.1 GB in the end (delta: -173.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 198.03 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 430.10 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 55.8 MB). Peak memory consumption was 55.8 MB. Max. memory is 11.5 GB. * Witness Printer took 2.72 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 68]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 67, overapproximation of someBinaryArithmeticDOUBLEoperation at line 61. Possible FailurePath: [L60] double x = __VERIFIER_nondet_double(); [L61] double y = 0.0 / 0.0; VAL [x=4294967301] [L62] CALL, EXPR isnan_double(x) VAL [\old(x)=4294967301] [L16] return x != x; VAL [\old(x)=4294967301, \result=0, x=4294967301] [L62] RET, EXPR isnan_double(x) VAL [isnan_double(x)=0, x=4294967301] [L62] COND TRUE !isnan_double(x) [L64] CALL, EXPR fmin_double(x, y) VAL [\old(x)=4294967301, \old(y)=4294967300] [L45] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967301] [L18] __uint32_t msw, lsw; VAL [\old(x)=4294967301, x=4294967301] [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L27-L28] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967301, lsw=4294967297, msw=2146435073, x=4294967301] [L30-L31] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967301, lsw=4294967297, msw=2146435073, x=4294967301] [L33-L34] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967301, lsw=4294967297, msw=2146435073, x=4294967301] [L37-L38] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L41] return 0; VAL [\old(x)=4294967301, \result=0, lsw=4294967297, msw=2146435073, x=4294967301] [L45] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4294967301, \old(y)=4294967300, __fpclassify_double(x)=0, x=4294967301, y=4294967300] [L45] COND TRUE __fpclassify_double(x) == 0 [L46] return y; VAL [\old(x)=4294967301, \old(y)=4294967300, \result=4294967300, x=4294967301, y=4294967300] [L64] RET, EXPR fmin_double(x, y) VAL [fmin_double(x, y)=4294967300, x=4294967301, y=4294967300] [L64] double res = fmin_double(x, y); [L67] COND TRUE res != x VAL [res=4294967300, x=4294967301, y=4294967300] [L68] __VERIFIER_error() VAL [res=4294967300, x=4294967301, y=4294967300] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 139 SDtfs, 0 SDslu, 162 SDs, 0 SdLazy, 21 SolverSat, 2 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=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 2761 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-02 02:55:15,467 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 02:55:15,468 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 02:55:15,476 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 02:55:15,476 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 02:55:15,477 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 02:55:15,478 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 02:55:15,479 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 02:55:15,480 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 02:55:15,481 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 02:55:15,481 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 02:55:15,481 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 02:55:15,482 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 02:55:15,483 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 02:55:15,484 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 02:55:15,484 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 02:55:15,485 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 02:55:15,486 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 02:55:15,487 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 02:55:15,488 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 02:55:15,489 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 02:55:15,490 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 02:55:15,491 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 02:55:15,492 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 02:55:15,492 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 02:55:15,492 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 02:55:15,493 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 02:55:15,494 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 02:55:15,494 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 02:55:15,495 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 02:55:15,495 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 02:55:15,496 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 02:55:15,496 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 02:55:15,496 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 02:55:15,497 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 02:55:15,497 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 02:55:15,497 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-02 02:55:15,507 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 02:55:15,507 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 02:55:15,508 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 02:55:15,508 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 02:55:15,509 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 02:55:15,509 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 02:55:15,509 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 02:55:15,509 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 02:55:15,509 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 02:55:15,509 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 02:55:15,509 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 02:55:15,509 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 02:55:15,510 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 02:55:15,510 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 02:55:15,510 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-02 02:55:15,510 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-02 02:55:15,510 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 02:55:15,510 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 02:55:15,510 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 02:55:15,510 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 02:55:15,510 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 02:55:15,511 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 02:55:15,511 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 02:55:15,511 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 02:55:15,511 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 02:55:15,511 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 02:55:15,511 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 02:55:15,511 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 02:55:15,511 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-02 02:55:15,511 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 02:55:15,511 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-02 02:55:15,511 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-02 02:55:15,512 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_bb4bf30a-d5c5-4a31-bb93-5deadf653266/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 -> c714d208cb0b1f96f572e8a6108248eb76c73a94 [2018-12-02 02:55:15,535 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 02:55:15,542 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 02:55:15,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 02:55:15,545 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 02:55:15,545 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 02:55:15,546 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1231b_true-unreach-call.c [2018-12-02 02:55:15,581 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/data/33a2abaef/0561fbff143c4a13bc4648c626f22d2f/FLAGe09be3f54 [2018-12-02 02:55:15,983 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 02:55:15,984 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/sv-benchmarks/c/float-newlib/double_req_bl_1231b_true-unreach-call.c [2018-12-02 02:55:15,988 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/data/33a2abaef/0561fbff143c4a13bc4648c626f22d2f/FLAGe09be3f54 [2018-12-02 02:55:15,996 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/data/33a2abaef/0561fbff143c4a13bc4648c626f22d2f [2018-12-02 02:55:15,998 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 02:55:15,999 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 02:55:15,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 02:55:15,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 02:55:16,001 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 02:55:16,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:55:15" (1/1) ... [2018-12-02 02:55:16,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a0bb1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:55:16, skipping insertion in model container [2018-12-02 02:55:16,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:55:15" (1/1) ... [2018-12-02 02:55:16,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 02:55:16,018 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 02:55:16,111 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 02:55:16,114 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 02:55:16,130 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 02:55:16,147 INFO L195 MainTranslator]: Completed translation [2018-12-02 02:55:16,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:55:16 WrapperNode [2018-12-02 02:55:16,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 02:55:16,148 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 02:55:16,148 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 02:55:16,148 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 02:55:16,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:55:16" (1/1) ... [2018-12-02 02:55:16,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:55:16" (1/1) ... [2018-12-02 02:55:16,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 02:55:16,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 02:55:16,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 02:55:16,165 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 02:55:16,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:55:16" (1/1) ... [2018-12-02 02:55:16,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:55:16" (1/1) ... [2018-12-02 02:55:16,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:55:16" (1/1) ... [2018-12-02 02:55:16,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:55:16" (1/1) ... [2018-12-02 02:55:16,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:55:16" (1/1) ... [2018-12-02 02:55:16,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:55:16" (1/1) ... [2018-12-02 02:55:16,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:55:16" (1/1) ... [2018-12-02 02:55:16,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 02:55:16,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 02:55:16,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 02:55:16,184 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 02:55:16,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:55:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 02:55:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-12-02 02:55:16,244 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-12-02 02:55:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-12-02 02:55:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 02:55:16,244 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 02:55:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-02 02:55:16,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-02 02:55:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 02:55:16,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 02:55:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 02:55:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-02 02:55:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 02:55:16,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 02:55:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-12-02 02:55:16,245 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-12-02 02:55:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 02:55:16,356 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 02:55:16,428 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 02:55:16,428 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-02 02:55:16,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:55:16 BoogieIcfgContainer [2018-12-02 02:55:16,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 02:55:16,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 02:55:16,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 02:55:16,431 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 02:55:16,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:55:15" (1/3) ... [2018-12-02 02:55:16,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52190014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:55:16, skipping insertion in model container [2018-12-02 02:55:16,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:55:16" (2/3) ... [2018-12-02 02:55:16,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52190014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:55:16, skipping insertion in model container [2018-12-02 02:55:16,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:55:16" (3/3) ... [2018-12-02 02:55:16,434 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b_true-unreach-call.c [2018-12-02 02:55:16,439 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 02:55:16,443 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 02:55:16,452 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 02:55:16,470 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 02:55:16,470 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 02:55:16,470 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 02:55:16,470 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 02:55:16,470 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 02:55:16,470 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 02:55:16,471 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 02:55:16,471 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 02:55:16,471 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 02:55:16,480 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-12-02 02:55:16,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-02 02:55:16,483 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 02:55:16,484 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 02:55:16,485 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 02:55:16,488 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 02:55:16,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1136033273, now seen corresponding path program 1 times [2018-12-02 02:55:16,492 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 02:55:16,492 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-12-02 02:55:16,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 02:55:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 02:55:16,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 02:55:16,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 02:55:16,560 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 02:55:16,568 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 02:55:16,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 02:55:16,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 02:55:16,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 02:55:16,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 02:55:16,579 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2018-12-02 02:55:16,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 02:55:16,592 INFO L93 Difference]: Finished difference Result 64 states and 86 transitions. [2018-12-02 02:55:16,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 02:55:16,593 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-12-02 02:55:16,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 02:55:16,601 INFO L225 Difference]: With dead ends: 64 [2018-12-02 02:55:16,602 INFO L226 Difference]: Without dead ends: 34 [2018-12-02 02:55:16,604 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 02:55:16,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-02 02:55:16,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-12-02 02:55:16,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-02 02:55:16,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2018-12-02 02:55:16,633 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 25 [2018-12-02 02:55:16,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 02:55:16,633 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2018-12-02 02:55:16,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 02:55:16,633 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2018-12-02 02:55:16,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-02 02:55:16,635 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 02:55:16,635 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 02:55:16,635 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 02:55:16,636 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 02:55:16,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1267021660, now seen corresponding path program 1 times [2018-12-02 02:55:16,636 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 02:55:16,636 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-02 02:55:16,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 02:55:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 02:55:16,686 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 02:55:16,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 02:55:16,705 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 02:55:16,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 02:55:16,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 02:55:16,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 02:55:16,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 02:55:16,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 02:55:16,714 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 4 states. [2018-12-02 02:55:16,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 02:55:16,742 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-12-02 02:55:16,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 02:55:16,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-12-02 02:55:16,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 02:55:16,744 INFO L225 Difference]: With dead ends: 43 [2018-12-02 02:55:16,744 INFO L226 Difference]: Without dead ends: 37 [2018-12-02 02:55:16,745 INFO L631 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 [2018-12-02 02:55:16,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-12-02 02:55:16,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-12-02 02:55:16,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-02 02:55:16,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2018-12-02 02:55:16,750 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 26 [2018-12-02 02:55:16,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 02:55:16,750 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2018-12-02 02:55:16,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 02:55:16,751 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2018-12-02 02:55:16,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-02 02:55:16,752 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 02:55:16,752 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 02:55:16,752 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 02:55:16,752 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 02:55:16,752 INFO L82 PathProgramCache]: Analyzing trace with hash -938443286, now seen corresponding path program 1 times [2018-12-02 02:55:16,753 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 02:55:16,753 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-12-02 02:55:16,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 02:55:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 02:55:16,799 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 02:55:16,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 02:55:16,810 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 02:55:16,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 02:55:16,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 02:55:16,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 02:55:16,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 02:55:16,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 02:55:16,818 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 4 states. [2018-12-02 02:55:16,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 02:55:16,839 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2018-12-02 02:55:16,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 02:55:16,840 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-02 02:55:16,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 02:55:16,840 INFO L225 Difference]: With dead ends: 46 [2018-12-02 02:55:16,840 INFO L226 Difference]: Without dead ends: 40 [2018-12-02 02:55:16,841 INFO L631 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 [2018-12-02 02:55:16,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-02 02:55:16,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2018-12-02 02:55:16,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-02 02:55:16,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2018-12-02 02:55:16,845 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 27 [2018-12-02 02:55:16,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 02:55:16,845 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2018-12-02 02:55:16,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 02:55:16,845 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2018-12-02 02:55:16,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-02 02:55:16,846 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 02:55:16,846 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 02:55:16,846 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 02:55:16,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 02:55:16,846 INFO L82 PathProgramCache]: Analyzing trace with hash 2017668456, now seen corresponding path program 1 times [2018-12-02 02:55:16,846 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 02:55:16,846 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-12-02 02:55:16,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 02:55:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 02:55:16,889 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 02:55:16,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 02:55:16,898 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 02:55:16,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 02:55:16,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 02:55:16,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 02:55:16,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 02:55:16,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 02:55:16,908 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 4 states. [2018-12-02 02:55:16,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 02:55:16,929 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2018-12-02 02:55:16,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 02:55:16,930 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-12-02 02:55:16,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 02:55:16,930 INFO L225 Difference]: With dead ends: 46 [2018-12-02 02:55:16,930 INFO L226 Difference]: Without dead ends: 40 [2018-12-02 02:55:16,931 INFO L631 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 [2018-12-02 02:55:16,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-02 02:55:16,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2018-12-02 02:55:16,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-02 02:55:16,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2018-12-02 02:55:16,934 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 28 [2018-12-02 02:55:16,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 02:55:16,934 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2018-12-02 02:55:16,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 02:55:16,935 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2018-12-02 02:55:16,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-02 02:55:16,935 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 02:55:16,935 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 02:55:16,935 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 02:55:16,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 02:55:16,936 INFO L82 PathProgramCache]: Analyzing trace with hash 527968686, now seen corresponding path program 1 times [2018-12-02 02:55:16,936 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 02:55:16,936 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-12-02 02:55:16,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 02:55:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 02:55:16,982 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 02:55:16,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 02:55:16,991 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 02:55:16,998 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 02:55:16,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 02:55:16,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 02:55:16,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 02:55:16,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 02:55:16,999 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 4 states. [2018-12-02 02:55:17,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 02:55:17,020 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2018-12-02 02:55:17,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 02:55:17,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-12-02 02:55:17,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 02:55:17,022 INFO L225 Difference]: With dead ends: 46 [2018-12-02 02:55:17,022 INFO L226 Difference]: Without dead ends: 40 [2018-12-02 02:55:17,022 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 02:55:17,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-02 02:55:17,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2018-12-02 02:55:17,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-02 02:55:17,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2018-12-02 02:55:17,025 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 29 [2018-12-02 02:55:17,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 02:55:17,025 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2018-12-02 02:55:17,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 02:55:17,025 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2018-12-02 02:55:17,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-02 02:55:17,026 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 02:55:17,026 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 02:55:17,026 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 02:55:17,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 02:55:17,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1279485777, now seen corresponding path program 1 times [2018-12-02 02:55:17,026 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 02:55:17,027 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-12-02 02:55:17,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 02:55:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 02:55:17,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 02:55:17,170 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 02:55:17,170 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 02:55:17,174 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2018-12-02 02:55:17,202 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 24 [2018-12-02 02:55:17,203 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 02:55:17,213 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2018-12-02 02:55:17,217 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 4 [2018-12-02 02:55:17,217 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 02:55:17,219 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 02:55:17,221 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 02:55:17,229 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 02:55:17,230 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:46, output treesize:18 [2018-12-02 02:55:17,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 02:55:17,690 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 02:55:17,697 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 02:55:17,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-12-02 02:55:17,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-02 02:55:17,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-02 02:55:17,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2018-12-02 02:55:17,698 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 12 states. [2018-12-02 02:55:20,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 02:55:20,177 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2018-12-02 02:55:20,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-02 02:55:20,178 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2018-12-02 02:55:20,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 02:55:20,179 INFO L225 Difference]: With dead ends: 54 [2018-12-02 02:55:20,179 INFO L226 Difference]: Without dead ends: 40 [2018-12-02 02:55:20,179 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-12-02 02:55:20,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-02 02:55:20,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2018-12-02 02:55:20,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-02 02:55:20,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-12-02 02:55:20,183 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 29 [2018-12-02 02:55:20,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 02:55:20,183 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-12-02 02:55:20,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-02 02:55:20,183 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-12-02 02:55:20,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-02 02:55:20,184 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 02:55:20,184 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 02:55:20,184 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 02:55:20,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 02:55:20,184 INFO L82 PathProgramCache]: Analyzing trace with hash 627481976, now seen corresponding path program 1 times [2018-12-02 02:55:20,185 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 02:55:20,185 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-12-02 02:55:20,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 02:55:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 02:55:20,241 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 02:55:20,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 02:55:20,250 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 02:55:20,258 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 02:55:20,258 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 02:55:20,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 02:55:20,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 02:55:20,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 02:55:20,259 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 4 states. [2018-12-02 02:55:20,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 02:55:20,277 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2018-12-02 02:55:20,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 02:55:20,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-12-02 02:55:20,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 02:55:20,278 INFO L225 Difference]: With dead ends: 45 [2018-12-02 02:55:20,278 INFO L226 Difference]: Without dead ends: 39 [2018-12-02 02:55:20,278 INFO L631 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 [2018-12-02 02:55:20,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-02 02:55:20,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-12-02 02:55:20,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-02 02:55:20,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2018-12-02 02:55:20,281 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 34 [2018-12-02 02:55:20,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 02:55:20,281 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2018-12-02 02:55:20,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 02:55:20,281 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2018-12-02 02:55:20,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-02 02:55:20,282 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 02:55:20,282 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 02:55:20,282 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 02:55:20,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 02:55:20,282 INFO L82 PathProgramCache]: Analyzing trace with hash 246575920, now seen corresponding path program 1 times [2018-12-02 02:55:20,282 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 02:55:20,282 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-12-02 02:55:20,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 02:55:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 02:55:20,339 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 02:55:20,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 02:55:20,348 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 02:55:20,355 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 02:55:20,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 02:55:20,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 02:55:20,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 02:55:20,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 02:55:20,357 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 4 states. [2018-12-02 02:55:20,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 02:55:20,378 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2018-12-02 02:55:20,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 02:55:20,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-12-02 02:55:20,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 02:55:20,379 INFO L225 Difference]: With dead ends: 48 [2018-12-02 02:55:20,380 INFO L226 Difference]: Without dead ends: 42 [2018-12-02 02:55:20,380 INFO L631 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 [2018-12-02 02:55:20,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-02 02:55:20,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2018-12-02 02:55:20,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-02 02:55:20,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2018-12-02 02:55:20,383 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 35 [2018-12-02 02:55:20,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 02:55:20,383 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2018-12-02 02:55:20,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 02:55:20,383 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2018-12-02 02:55:20,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-02 02:55:20,384 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 02:55:20,384 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 02:55:20,384 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 02:55:20,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 02:55:20,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1208866989, now seen corresponding path program 1 times [2018-12-02 02:55:20,384 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 02:55:20,384 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/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 [2018-12-02 02:55:20,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 02:55:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 02:55:20,444 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 02:55:20,523 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-02 02:55:20,523 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 02:55:20,531 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 02:55:20,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 02:55:20,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 02:55:20,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 02:55:20,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-02 02:55:20,532 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 5 states. [2018-12-02 02:55:20,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 02:55:20,805 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2018-12-02 02:55:20,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 02:55:20,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2018-12-02 02:55:20,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 02:55:20,808 INFO L225 Difference]: With dead ends: 46 [2018-12-02 02:55:20,808 INFO L226 Difference]: Without dead ends: 39 [2018-12-02 02:55:20,808 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-02 02:55:20,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-02 02:55:20,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-12-02 02:55:20,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-02 02:55:20,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2018-12-02 02:55:20,811 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 36 [2018-12-02 02:55:20,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 02:55:20,811 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2018-12-02 02:55:20,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 02:55:20,811 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2018-12-02 02:55:20,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-02 02:55:20,812 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 02:55:20,812 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 02:55:20,812 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 02:55:20,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 02:55:20,812 INFO L82 PathProgramCache]: Analyzing trace with hash 566140373, now seen corresponding path program 1 times [2018-12-02 02:55:20,812 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 02:55:20,812 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/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 [2018-12-02 02:55:20,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 02:55:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 02:55:20,873 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 02:55:21,009 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 02:55:21,009 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 02:55:21,021 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 02:55:21,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 02:55:21,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 02:55:21,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 02:55:21,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 02:55:21,022 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 8 states. [2018-12-02 02:55:21,412 WARN L180 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-12-02 02:55:21,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 02:55:21,750 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2018-12-02 02:55:21,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 02:55:21,751 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2018-12-02 02:55:21,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 02:55:21,751 INFO L225 Difference]: With dead ends: 50 [2018-12-02 02:55:21,751 INFO L226 Difference]: Without dead ends: 41 [2018-12-02 02:55:21,751 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-02 02:55:21,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-02 02:55:21,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-02 02:55:21,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-02 02:55:21,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-12-02 02:55:21,754 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 36 [2018-12-02 02:55:21,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 02:55:21,754 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-12-02 02:55:21,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 02:55:21,754 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-12-02 02:55:21,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-02 02:55:21,755 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 02:55:21,755 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 02:55:21,755 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 02:55:21,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 02:55:21,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1611460484, now seen corresponding path program 1 times [2018-12-02 02:55:21,755 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 02:55:21,755 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/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 [2018-12-02 02:55:21,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 02:55:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 02:55:21,814 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 02:55:21,826 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 02:55:21,826 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 02:55:21,834 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 02:55:21,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 02:55:21,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 02:55:21,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 02:55:21,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 02:55:21,835 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 4 states. [2018-12-02 02:55:21,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 02:55:21,853 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2018-12-02 02:55:21,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 02:55:21,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-12-02 02:55:21,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 02:55:21,854 INFO L225 Difference]: With dead ends: 50 [2018-12-02 02:55:21,854 INFO L226 Difference]: Without dead ends: 44 [2018-12-02 02:55:21,854 INFO L631 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 [2018-12-02 02:55:21,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-02 02:55:21,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-12-02 02:55:21,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-02 02:55:21,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-12-02 02:55:21,859 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 36 [2018-12-02 02:55:21,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 02:55:21,859 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-12-02 02:55:21,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 02:55:21,859 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-12-02 02:55:21,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-02 02:55:21,860 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 02:55:21,860 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 02:55:21,860 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 02:55:21,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 02:55:21,861 INFO L82 PathProgramCache]: Analyzing trace with hash -412359283, now seen corresponding path program 1 times [2018-12-02 02:55:21,861 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 02:55:21,861 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/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 [2018-12-02 02:55:21,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 02:55:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 02:55:21,921 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 02:55:22,045 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 02:55:22,045 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 02:55:22,053 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 02:55:22,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 02:55:22,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 02:55:22,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 02:55:22,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 02:55:22,054 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 8 states. [2018-12-02 02:55:22,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 02:55:22,740 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2018-12-02 02:55:22,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 02:55:22,741 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2018-12-02 02:55:22,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 02:55:22,742 INFO L225 Difference]: With dead ends: 52 [2018-12-02 02:55:22,742 INFO L226 Difference]: Without dead ends: 43 [2018-12-02 02:55:22,742 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-02 02:55:22,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-02 02:55:22,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2018-12-02 02:55:22,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-02 02:55:22,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-12-02 02:55:22,745 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 37 [2018-12-02 02:55:22,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 02:55:22,745 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-12-02 02:55:22,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 02:55:22,745 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-12-02 02:55:22,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-02 02:55:22,745 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 02:55:22,745 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 02:55:22,746 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 02:55:22,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 02:55:22,746 INFO L82 PathProgramCache]: Analyzing trace with hash -2015897420, now seen corresponding path program 1 times [2018-12-02 02:55:22,746 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 02:55:22,746 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/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 [2018-12-02 02:55:22,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 02:55:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 02:55:22,802 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 02:55:22,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 02:55:22,813 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 02:55:22,820 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 02:55:22,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 02:55:22,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 02:55:22,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 02:55:22,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 02:55:22,821 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 4 states. [2018-12-02 02:55:22,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 02:55:22,838 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2018-12-02 02:55:22,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 02:55:22,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-12-02 02:55:22,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 02:55:22,839 INFO L225 Difference]: With dead ends: 48 [2018-12-02 02:55:22,839 INFO L226 Difference]: Without dead ends: 42 [2018-12-02 02:55:22,840 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 02:55:22,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-02 02:55:22,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2018-12-02 02:55:22,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-02 02:55:22,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2018-12-02 02:55:22,842 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 37 [2018-12-02 02:55:22,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 02:55:22,842 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2018-12-02 02:55:22,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 02:55:22,843 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2018-12-02 02:55:22,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-02 02:55:22,843 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 02:55:22,843 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 02:55:22,843 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 02:55:22,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 02:55:22,844 INFO L82 PathProgramCache]: Analyzing trace with hash 471615413, now seen corresponding path program 1 times [2018-12-02 02:55:22,844 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 02:55:22,844 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2018-12-02 02:55:22,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 02:55:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 02:55:22,903 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 02:55:23,281 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 02:55:23,281 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 02:55:24,046 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 02:55:24,046 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 02:55:24,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 02:55:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 02:55:25,421 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 02:55:25,761 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-02 02:55:25,761 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 02:55:25,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-02 02:55:25,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 16 [2018-12-02 02:55:25,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-02 02:55:25,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-02 02:55:25,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2018-12-02 02:55:25,777 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 16 states. [2018-12-02 02:55:27,124 WARN L180 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2018-12-02 02:55:27,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 02:55:27,254 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2018-12-02 02:55:27,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-02 02:55:27,254 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 37 [2018-12-02 02:55:27,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 02:55:27,255 INFO L225 Difference]: With dead ends: 59 [2018-12-02 02:55:27,255 INFO L226 Difference]: Without dead ends: 49 [2018-12-02 02:55:27,255 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2018-12-02 02:55:27,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-12-02 02:55:27,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2018-12-02 02:55:27,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-02 02:55:27,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-12-02 02:55:27,259 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 37 [2018-12-02 02:55:27,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 02:55:27,259 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-12-02 02:55:27,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-02 02:55:27,259 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-12-02 02:55:27,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-02 02:55:27,259 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 02:55:27,259 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 02:55:27,260 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 02:55:27,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 02:55:27,260 INFO L82 PathProgramCache]: Analyzing trace with hash 721051609, now seen corresponding path program 1 times [2018-12-02 02:55:27,260 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 02:55:27,260 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2018-12-02 02:55:27,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 02:55:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 02:55:27,329 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 02:55:27,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 02:55:27,453 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 02:55:27,461 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 02:55:27,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 02:55:27,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 02:55:27,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 02:55:27,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 02:55:27,461 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 8 states. [2018-12-02 02:55:28,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 02:55:28,290 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2018-12-02 02:55:28,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 02:55:28,292 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2018-12-02 02:55:28,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 02:55:28,292 INFO L225 Difference]: With dead ends: 51 [2018-12-02 02:55:28,292 INFO L226 Difference]: Without dead ends: 42 [2018-12-02 02:55:28,293 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-02 02:55:28,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-02 02:55:28,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2018-12-02 02:55:28,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-02 02:55:28,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-12-02 02:55:28,297 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 38 [2018-12-02 02:55:28,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 02:55:28,297 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-12-02 02:55:28,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 02:55:28,297 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-12-02 02:55:28,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-02 02:55:28,298 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 02:55:28,298 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 02:55:28,298 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 02:55:28,298 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 02:55:28,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1395787247, now seen corresponding path program 1 times [2018-12-02 02:55:28,299 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 02:55:28,299 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2018-12-02 02:55:28,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 02:55:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 02:55:28,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 02:55:28,396 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 02:55:28,397 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 02:55:28,397 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2018-12-02 02:55:28,457 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 35 [2018-12-02 02:55:28,457 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 02:55:28,478 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2018-12-02 02:55:28,494 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 9 [2018-12-02 02:55:28,494 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 02:55:28,501 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 02:55:28,507 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 02:55:28,515 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 02:55:28,516 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:57, output treesize:18 [2018-12-02 02:55:28,617 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 02:55:28,617 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 02:55:28,626 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 02:55:28,626 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 02:55:28,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 02:55:28,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 02:55:28,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 02:55:28,627 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 8 states. [2018-12-02 02:55:29,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 02:55:29,978 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2018-12-02 02:55:29,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 02:55:29,980 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2018-12-02 02:55:29,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 02:55:29,980 INFO L225 Difference]: With dead ends: 47 [2018-12-02 02:55:29,980 INFO L226 Difference]: Without dead ends: 38 [2018-12-02 02:55:29,980 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-02 02:55:29,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-02 02:55:29,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2018-12-02 02:55:29,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-02 02:55:29,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2018-12-02 02:55:29,983 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 39 [2018-12-02 02:55:29,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 02:55:29,983 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2018-12-02 02:55:29,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 02:55:29,983 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2018-12-02 02:55:29,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-02 02:55:29,983 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 02:55:29,983 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 02:55:29,983 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 02:55:29,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 02:55:29,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1102228690, now seen corresponding path program 1 times [2018-12-02 02:55:29,984 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 02:55:29,984 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/mathsat Starting monitored process 19 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with mathsat -unsat_core_generation=3 [2018-12-02 02:55:29,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 02:55:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 02:55:30,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 02:55:30,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 02:55:30,049 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 02:55:30,057 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 02:55:30,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 02:55:30,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 02:55:30,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 02:55:30,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 02:55:30,058 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 4 states. [2018-12-02 02:55:30,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 02:55:30,063 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2018-12-02 02:55:30,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 02:55:30,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-12-02 02:55:30,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 02:55:30,064 INFO L225 Difference]: With dead ends: 36 [2018-12-02 02:55:30,064 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 02:55:30,064 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 02:55:30,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 02:55:30,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 02:55:30,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 02:55:30,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 02:55:30,065 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2018-12-02 02:55:30,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 02:55:30,065 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 02:55:30,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 02:55:30,065 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 02:55:30,065 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 02:55:30,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-02 02:55:30,177 INFO L451 ceAbstractionStarter]: At program point isnan_doubleENTRY(line 16) the Hoare annotation is: true [2018-12-02 02:55:30,177 INFO L448 ceAbstractionStarter]: For program point isnan_doubleEXIT(line 16) no Hoare annotation was computed. [2018-12-02 02:55:30,177 INFO L448 ceAbstractionStarter]: For program point isnan_doubleFINAL(line 16) no Hoare annotation was computed. [2018-12-02 02:55:30,177 INFO L448 ceAbstractionStarter]: For program point L33(lines 33 41) no Hoare annotation was computed. [2018-12-02 02:55:30,177 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleFINAL(lines 17 42) no Hoare annotation was computed. [2018-12-02 02:55:30,177 INFO L451 ceAbstractionStarter]: At program point __fpclassify_doubleENTRY(lines 17 42) the Hoare annotation is: true [2018-12-02 02:55:30,177 INFO L448 ceAbstractionStarter]: For program point L30(lines 30 41) no Hoare annotation was computed. [2018-12-02 02:55:30,177 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleEXIT(lines 17 42) no Hoare annotation was computed. [2018-12-02 02:55:30,177 INFO L448 ceAbstractionStarter]: For program point L20-1(lines 20 25) no Hoare annotation was computed. [2018-12-02 02:55:30,177 INFO L444 ceAbstractionStarter]: At program point L20-2(lines 20 25) the Hoare annotation is: (= |__fpclassify_double_#in~x| __fpclassify_double_~x) [2018-12-02 02:55:30,177 INFO L448 ceAbstractionStarter]: For program point L20-3(lines 17 42) no Hoare annotation was computed. [2018-12-02 02:55:30,177 INFO L448 ceAbstractionStarter]: For program point L37(lines 37 41) no Hoare annotation was computed. [2018-12-02 02:55:30,177 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-02 02:55:30,177 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-02 02:55:30,177 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-02 02:55:30,177 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-02 02:55:30,177 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-02 02:55:30,178 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-02 02:55:30,178 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-02 02:55:30,178 INFO L444 ceAbstractionStarter]: At program point L64(line 64) the Hoare annotation is: (and (= main_~y~0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53))) (fp.eq main_~x~0 main_~x~0)) [2018-12-02 02:55:30,178 INFO L448 ceAbstractionStarter]: For program point L64-1(line 64) no Hoare annotation was computed. [2018-12-02 02:55:30,178 INFO L444 ceAbstractionStarter]: At program point L62(line 62) the Hoare annotation is: (= main_~y~0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53))) [2018-12-02 02:55:30,178 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 53 74) the Hoare annotation is: true [2018-12-02 02:55:30,178 INFO L448 ceAbstractionStarter]: For program point L62-1(lines 62 71) no Hoare annotation was computed. [2018-12-02 02:55:30,178 INFO L448 ceAbstractionStarter]: For program point L62-3(lines 62 71) no Hoare annotation was computed. [2018-12-02 02:55:30,178 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 53 74) no Hoare annotation was computed. [2018-12-02 02:55:30,178 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 53 74) no Hoare annotation was computed. [2018-12-02 02:55:30,178 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 68) no Hoare annotation was computed. [2018-12-02 02:55:30,178 INFO L448 ceAbstractionStarter]: For program point L68(line 68) no Hoare annotation was computed. [2018-12-02 02:55:30,178 INFO L448 ceAbstractionStarter]: For program point L67(lines 67 70) no Hoare annotation was computed. [2018-12-02 02:55:30,178 INFO L448 ceAbstractionStarter]: For program point fmin_doubleFINAL(lines 44 51) no Hoare annotation was computed. [2018-12-02 02:55:30,178 INFO L451 ceAbstractionStarter]: At program point fmin_doubleENTRY(lines 44 51) the Hoare annotation is: true [2018-12-02 02:55:30,178 INFO L448 ceAbstractionStarter]: For program point fmin_doubleEXIT(lines 44 51) no Hoare annotation was computed. [2018-12-02 02:55:30,179 INFO L448 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2018-12-02 02:55:30,179 INFO L448 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2018-12-02 02:55:30,179 INFO L444 ceAbstractionStarter]: At program point L47(line 47) the Hoare annotation is: (let ((.cse1 (= fmin_double_~x |fmin_double_#in~x|))) (or (and (exists ((v_prenex_24 (_ BitVec 64))) (let ((.cse0 ((_ extract 63 32) v_prenex_24))) (and (= (fp ((_ extract 63 63) v_prenex_24) ((_ extract 62 52) v_prenex_24) ((_ extract 51 0) v_prenex_24)) |fmin_double_#in~x|) (not (bvule .cse0 (_ bv2146435071 32))) (not (= ((_ extract 31 0) v_prenex_24) (_ bv0 32))) (not (bvuge .cse0 (_ bv2147483648 32)))))) .cse1) (and (= fmin_double_~y |fmin_double_#in~y|) .cse1))) [2018-12-02 02:55:30,179 INFO L448 ceAbstractionStarter]: For program point L47-1(lines 47 48) no Hoare annotation was computed. [2018-12-02 02:55:30,179 INFO L444 ceAbstractionStarter]: At program point L45(line 45) the Hoare annotation is: (and (= fmin_double_~y |fmin_double_#in~y|) (= fmin_double_~x |fmin_double_#in~x|)) [2018-12-02 02:55:30,179 INFO L448 ceAbstractionStarter]: For program point L45-1(lines 45 46) no Hoare annotation was computed. [2018-12-02 02:55:30,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:55:30 BoogieIcfgContainer [2018-12-02 02:55:30,186 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 02:55:30,186 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 02:55:30,186 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 02:55:30,186 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 02:55:30,187 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:55:16" (3/4) ... [2018-12-02 02:55:30,189 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 02:55:30,193 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_double [2018-12-02 02:55:30,193 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-12-02 02:55:30,193 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-02 02:55:30,193 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-02 02:55:30,193 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_double [2018-12-02 02:55:30,196 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2018-12-02 02:55:30,196 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-02 02:55:30,196 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 02:55:30,212 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-12-02 02:55:30,229 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_bb4bf30a-d5c5-4a31-bb93-5deadf653266/bin-2019/uautomizer/witness.graphml [2018-12-02 02:55:30,229 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 02:55:30,230 INFO L168 Benchmark]: Toolchain (without parser) took 14232.03 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 298.8 MB). Free memory was 943.4 MB in the beginning and 1.3 GB in the end (delta: -351.5 MB). Peak memory consumption was 365.2 MB. Max. memory is 11.5 GB. [2018-12-02 02:55:30,231 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 02:55:30,231 INFO L168 Benchmark]: CACSL2BoogieTranslator took 148.90 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 02:55:30,231 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.98 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-02 02:55:30,231 INFO L168 Benchmark]: Boogie Preprocessor took 19.52 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 02:55:30,232 INFO L168 Benchmark]: RCFGBuilder took 244.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -158.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-12-02 02:55:30,232 INFO L168 Benchmark]: TraceAbstraction took 13757.19 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 75.5 MB). Free memory was 1.1 GB in the beginning and 771.7 MB in the end (delta: 314.1 MB). Peak memory consumption was 389.6 MB. Max. memory is 11.5 GB. [2018-12-02 02:55:30,232 INFO L168 Benchmark]: Witness Printer took 43.21 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 107.0 MB). Free memory was 771.7 MB in the beginning and 1.3 GB in the end (delta: -523.1 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2018-12-02 02:55:30,234 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 148.90 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.98 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.52 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 244.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -158.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 13757.19 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 75.5 MB). Free memory was 1.1 GB in the beginning and 771.7 MB in the end (delta: 314.1 MB). Peak memory consumption was 389.6 MB. Max. memory is 11.5 GB. * Witness Printer took 43.21 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 107.0 MB). Free memory was 771.7 MB in the beginning and 1.3 GB in the end (delta: -523.1 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 68]: 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: 20]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 39 locations, 1 error locations. SAFE Result, 13.7s OverallTime, 17 OverallIterations, 2 TraceHistogramMax, 8.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 611 SDtfs, 213 SDslu, 1666 SDs, 0 SdLazy, 888 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 636 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=10, 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, 17 MinimizatonAttempts, 41 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 18 PreInvPairs, 23 NumberOfFragments, 71 HoareAnnotationTreeSize, 18 FomulaSimplifications, 53 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 605 NumberOfCodeBlocks, 605 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 587 ConstructedInterpolants, 66 QuantifiedInterpolants, 98629 SizeOfPredicates, 37 NumberOfNonLiveVariables, 1777 ConjunctsInSsa, 115 ConjunctsInUnsatCore, 18 InterpolantComputations, 17 PerfectInterpolantSequences, 67/72 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...