./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 ......................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 17:19:20,384 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 17:19:20,385 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 17:19:20,391 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 17:19:20,391 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 17:19:20,392 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 17:19:20,393 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 17:19:20,394 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 17:19:20,395 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 17:19:20,395 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 17:19:20,396 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 17:19:20,396 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 17:19:20,397 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 17:19:20,397 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 17:19:20,398 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 17:19:20,398 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 17:19:20,399 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 17:19:20,400 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 17:19:20,401 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 17:19:20,403 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 17:19:20,403 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 17:19:20,404 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 17:19:20,406 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 17:19:20,406 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:19:20,406 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:19:20,407 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:19:20,407 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:19:20,408 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:19:20,408 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:19:20,409 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:19:20,409 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:19:20,410 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:19:20,410 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:19:20,410 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:19:20,410 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:19:20,411 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:19:20,411 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 17:19:20,419 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:19:20,419 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:19:20,420 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 17:19:20,420 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 17:19:20,420 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 17:19:20,420 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 17:19:20,420 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 17:19:20,420 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 17:19:20,420 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 17:19:20,421 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 17:19:20,421 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 17:19:20,421 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 17:19:20,421 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 17:19:20,421 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:19:20,422 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 17:19:20,422 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 17:19:20,422 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 17:19:20,422 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:19:20,422 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 17:19:20,422 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 17:19:20,422 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 17:19:20,423 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 17:19:20,423 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 17:19:20,423 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:19:20,423 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 17:19:20,423 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:19:20,423 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:19:20,423 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 17:19:20,424 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 17:19:20,424 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:19:20,424 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:19:20,424 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 17:19:20,424 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 17:19:20,424 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 17:19:20,424 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 17:19:20,424 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 17:19:20,425 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 17:19:20,425 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan 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 -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 [2018-11-18 17:19:20,448 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:19:20,457 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:19:20,459 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:19:20,461 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:19:20,461 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:19:20,461 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-11-18 17:19:20,503 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/data/65116e913/11f0eb660fca4494915b282f5ed55c33/FLAG07953cb8d [2018-11-18 17:19:20,809 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:19:20,809 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-11-18 17:19:20,813 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/data/65116e913/11f0eb660fca4494915b282f5ed55c33/FLAG07953cb8d [2018-11-18 17:19:20,825 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/data/65116e913/11f0eb660fca4494915b282f5ed55c33 [2018-11-18 17:19:20,828 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:19:20,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 17:19:20,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:19:20,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:19:20,833 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:19:20,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:19:20" (1/1) ... [2018-11-18 17:19:20,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e791d46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:19:20, skipping insertion in model container [2018-11-18 17:19:20,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:19:20" (1/1) ... [2018-11-18 17:19:20,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:19:20,862 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:19:20,981 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:19:20,983 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:19:20,996 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:19:21,008 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:19:21,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:19:21 WrapperNode [2018-11-18 17:19:21,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:19:21,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 17:19:21,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 17:19:21,009 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 17:19:21,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:19:21" (1/1) ... [2018-11-18 17:19:21,021 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:19:21" (1/1) ... [2018-11-18 17:19:21,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 17:19:21,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:19:21,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:19:21,027 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:19:21,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:19:21" (1/1) ... [2018-11-18 17:19:21,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:19:21" (1/1) ... [2018-11-18 17:19:21,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:19:21" (1/1) ... [2018-11-18 17:19:21,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:19:21" (1/1) ... [2018-11-18 17:19:21,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:19:21" (1/1) ... [2018-11-18 17:19:21,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:19:21" (1/1) ... [2018-11-18 17:19:21,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:19:21" (1/1) ... [2018-11-18 17:19:21,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:19:21,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:19:21,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:19:21,084 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:19:21,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:19:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:19:21,119 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 17:19:21,119 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 17:19:21,119 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-11-18 17:19:21,119 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-11-18 17:19:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-18 17:19:21,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-18 17:19:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-18 17:19:21,120 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-18 17:19:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 17:19:21,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 17:19:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 17:19:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 17:19:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:19:21,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:19:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 17:19:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 17:19:21,285 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:19:21,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:19:21 BoogieIcfgContainer [2018-11-18 17:19:21,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:19:21,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 17:19:21,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 17:19:21,289 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 17:19:21,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:19:20" (1/3) ... [2018-11-18 17:19:21,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b876a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:19:21, skipping insertion in model container [2018-11-18 17:19:21,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:19:21" (2/3) ... [2018-11-18 17:19:21,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b876a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:19:21, skipping insertion in model container [2018-11-18 17:19:21,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:19:21" (3/3) ... [2018-11-18 17:19:21,291 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250_true-unreach-call.c [2018-11-18 17:19:21,299 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 17:19:21,304 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 17:19:21,317 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 17:19:21,340 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 17:19:21,341 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 17:19:21,341 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 17:19:21,341 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:19:21,341 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:19:21,341 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 17:19:21,341 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:19:21,341 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 17:19:21,351 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-11-18 17:19:21,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 17:19:21,355 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:19:21,355 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:19:21,357 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:19:21,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:19:21,360 INFO L82 PathProgramCache]: Analyzing trace with hash -688452071, now seen corresponding path program 1 times [2018-11-18 17:19:21,362 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:19:21,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:19:21,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:19:21,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:19:21,391 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:19:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:19:21,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:19:21,455 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:19:21,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:19:21,455 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:19:21,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 17:19:21,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 17:19:21,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 17:19:21,470 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-11-18 17:19:21,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:19:21,484 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2018-11-18 17:19:21,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 17:19:21,485 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-11-18 17:19:21,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:19:21,491 INFO L225 Difference]: With dead ends: 71 [2018-11-18 17:19:21,491 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 17:19:21,494 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 17:19:21,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 17:19:21,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-18 17:19:21,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 17:19:21,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-11-18 17:19:21,520 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2018-11-18 17:19:21,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:19:21,520 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-11-18 17:19:21,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 17:19:21,520 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-11-18 17:19:21,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 17:19:21,522 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:19:21,522 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:19:21,522 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:19:21,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:19:21,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1409132855, now seen corresponding path program 1 times [2018-11-18 17:19:21,523 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:19:21,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:19:21,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:19:21,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:19:21,524 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:19:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:19:21,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:19:21,632 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:19:21,632 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 17:19:21,632 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:19:21,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:19:21,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:19:21,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:19:21,634 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-11-18 17:19:21,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:19:21,659 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-11-18 17:19:21,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 17:19:21,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-18 17:19:21,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:19:21,661 INFO L225 Difference]: With dead ends: 51 [2018-11-18 17:19:21,661 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 17:19:21,662 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:19:21,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 17:19:21,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-18 17:19:21,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 17:19:21,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-18 17:19:21,668 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2018-11-18 17:19:21,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:19:21,668 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-18 17:19:21,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:19:21,668 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-18 17:19:21,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 17:19:21,669 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:19:21,669 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:19:21,669 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:19:21,669 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:19:21,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1379485408, now seen corresponding path program 1 times [2018-11-18 17:19:21,669 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:19:21,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:19:21,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:19:21,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:19:21,670 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:19:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:19:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:19:21,718 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:19:21,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 17:19:21,718 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:19:21,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:19:21,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:19:21,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:19:21,719 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-11-18 17:19:21,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:19:21,741 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2018-11-18 17:19:21,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 17:19:21,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-18 17:19:21,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:19:21,742 INFO L225 Difference]: With dead ends: 55 [2018-11-18 17:19:21,742 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 17:19:21,743 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:19:21,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 17:19:21,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-11-18 17:19:21,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 17:19:21,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-18 17:19:21,747 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2018-11-18 17:19:21,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:19:21,747 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-18 17:19:21,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:19:21,747 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-18 17:19:21,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 17:19:21,748 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:19:21,748 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:19:21,748 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:19:21,748 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:19:21,748 INFO L82 PathProgramCache]: Analyzing trace with hash 128066401, now seen corresponding path program 1 times [2018-11-18 17:19:21,748 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:19:21,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:19:21,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:19:21,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:19:21,749 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:19:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:19:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:19:21,789 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 17:19:21,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 05:19:21 BoogieIcfgContainer [2018-11-18 17:19:21,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 17:19:21,808 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 17:19:21,808 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 17:19:21,808 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 17:19:21,808 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:19:21" (3/4) ... [2018-11-18 17:19:21,811 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 17:19:21,811 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 17:19:21,811 INFO L168 Benchmark]: Toolchain (without parser) took 982.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 958.2 MB in the beginning and 1.1 GB in the end (delta: -101.0 MB). Peak memory consumption was 34.2 MB. Max. memory is 11.5 GB. [2018-11-18 17:19:21,812 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:19:21,812 INFO L168 Benchmark]: CACSL2BoogieTranslator took 178.18 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 944.7 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:19:21,813 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.84 ms. Allocated memory is still 1.0 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:19:21,813 INFO L168 Benchmark]: Boogie Preprocessor took 56.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -187.9 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:19:21,814 INFO L168 Benchmark]: RCFGBuilder took 202.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2018-11-18 17:19:21,814 INFO L168 Benchmark]: TraceAbstraction took 521.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 53.8 MB). Peak memory consumption was 53.8 MB. Max. memory is 11.5 GB. [2018-11-18 17:19:21,815 INFO L168 Benchmark]: Witness Printer took 2.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:19:21,816 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 178.18 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 944.7 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.84 ms. Allocated memory is still 1.0 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 56.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -187.9 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 202.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 521.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 53.8 MB). Peak memory consumption was 53.8 MB. Max. memory is 11.5 GB. * Witness Printer took 2.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 65]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 54, overapproximation of someBinaryArithmeticFLOAToperation at line 60. Possible FailurePath: [L60] float x = 0.0f / 0.0f; [L61] float y = 0.0f / 0.0f; [L62] CALL, EXPR fmax_float(x, y) VAL [\old(x)=2139095044, \old(y)=2139095042] [L43] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=2139095044] [L20] __uint32_t w; VAL [\old(x)=2139095044, x=2139095044] [L23] FCALL ieee_float_shape_type gf_u; [L24] FCALL gf_u.value = (x) [L25] EXPR, FCALL gf_u.word [L25] (w) = gf_u.word [L26] COND FALSE !(0) VAL [\old(x)=2139095044, w=2139095041, x=2139095044] [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=2139095044, w=2139095041, x=2139095044] [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=2139095044, w=2139095041, x=2139095044] [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=2139095044, w=2139095041, x=2139095044] [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] RET return 0; VAL [\old(x)=2139095044, \result=0, w=2139095041, x=2139095044] [L43] EXPR __fpclassify_float(x) VAL [\old(x)=2139095044, \old(y)=2139095042, __fpclassify_float(x)=0, x=2139095044, y=2139095042] [L43] COND TRUE __fpclassify_float(x) == 0 [L44] RET return y; VAL [\old(x)=2139095044, \old(y)=2139095042, \result=2139095042, x=2139095044, y=2139095042] [L62] EXPR fmax_float(x, y) VAL [fmax_float(x, y)=2139095042, x=2139095044, y=2139095042] [L62] float res = fmax_float(x, y); [L64] CALL, EXPR isnan_float(res) VAL [\old(x)=2139095042] [L54] RET return x != x; VAL [\old(x)=2139095042, \result=0, x=2139095042] [L64] EXPR isnan_float(res) VAL [isnan_float(res)=0, res=2139095042, x=2139095044, y=2139095042] [L64] COND TRUE !isnan_float(res) [L65] __VERIFIER_error() VAL [res=2139095042, x=2139095044, y=2139095042] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 129 SDtfs, 0 SDslu, 152 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2582 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5842f4b [2018-11-18 17:19:23,218 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 17:19:23,219 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 17:19:23,226 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 17:19:23,226 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 17:19:23,227 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 17:19:23,228 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 17:19:23,229 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 17:19:23,230 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 17:19:23,231 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 17:19:23,231 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 17:19:23,231 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 17:19:23,232 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 17:19:23,233 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 17:19:23,234 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 17:19:23,234 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 17:19:23,235 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 17:19:23,236 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 17:19:23,237 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 17:19:23,238 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 17:19:23,239 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 17:19:23,240 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 17:19:23,241 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 17:19:23,242 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:19:23,242 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:19:23,242 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:19:23,243 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:19:23,244 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:19:23,244 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:19:23,245 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:19:23,245 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:19:23,245 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:19:23,246 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:19:23,246 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:19:23,246 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:19:23,247 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:19:23,247 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 17:19:23,257 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:19:23,258 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:19:23,258 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 17:19:23,258 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 17:19:23,258 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 17:19:23,259 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 17:19:23,259 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 17:19:23,259 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 17:19:23,259 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 17:19:23,259 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 17:19:23,260 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:19:23,260 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 17:19:23,260 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 17:19:23,260 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:19:23,260 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 17:19:23,260 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 17:19:23,260 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 17:19:23,261 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 17:19:23,261 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 17:19:23,261 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 17:19:23,261 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 17:19:23,261 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:19:23,261 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 17:19:23,261 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:19:23,262 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:19:23,262 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 17:19:23,262 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 17:19:23,262 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:19:23,262 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:19:23,262 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 17:19:23,262 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 17:19:23,263 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 17:19:23,263 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 17:19:23,263 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 17:19:23,263 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 17:19:23,263 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_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan 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 -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 [2018-11-18 17:19:23,291 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:19:23,298 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:19:23,300 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:19:23,301 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:19:23,302 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:19:23,302 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-11-18 17:19:23,341 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/data/758a97b7b/1d61d248e8144a268070fc1e2bf06bc7/FLAG5b2e6a2bc [2018-11-18 17:19:23,663 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:19:23,663 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-11-18 17:19:23,668 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/data/758a97b7b/1d61d248e8144a268070fc1e2bf06bc7/FLAG5b2e6a2bc [2018-11-18 17:19:24,099 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/data/758a97b7b/1d61d248e8144a268070fc1e2bf06bc7 [2018-11-18 17:19:24,101 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:19:24,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 17:19:24,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:19:24,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:19:24,105 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:19:24,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:19:24" (1/1) ... [2018-11-18 17:19:24,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29055736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:19:24, skipping insertion in model container [2018-11-18 17:19:24,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:19:24" (1/1) ... [2018-11-18 17:19:24,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:19:24,130 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:19:24,253 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:19:24,258 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:19:24,277 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:19:24,292 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:19:24,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:19:24 WrapperNode [2018-11-18 17:19:24,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:19:24,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 17:19:24,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 17:19:24,293 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 17:19:24,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:19:24" (1/1) ... [2018-11-18 17:19:24,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:19:24" (1/1) ... [2018-11-18 17:19:24,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 17:19:24,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:19:24,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:19:24,308 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:19:24,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:19:24" (1/1) ... [2018-11-18 17:19:24,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:19:24" (1/1) ... [2018-11-18 17:19:24,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:19:24" (1/1) ... [2018-11-18 17:19:24,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:19:24" (1/1) ... [2018-11-18 17:19:24,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:19:24" (1/1) ... [2018-11-18 17:19:24,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:19:24" (1/1) ... [2018-11-18 17:19:24,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:19:24" (1/1) ... [2018-11-18 17:19:24,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:19:24,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:19:24,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:19:24,329 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:19:24,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:19:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:19:24,423 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 17:19:24,423 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 17:19:24,423 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-11-18 17:19:24,423 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-11-18 17:19:24,423 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-18 17:19:24,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-18 17:19:24,424 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-18 17:19:24,424 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-18 17:19:24,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 17:19:24,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 17:19:24,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 17:19:24,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 17:19:24,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:19:24,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:19:24,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-18 17:19:24,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 17:19:24,567 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 17:19:24,587 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:19:24,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:19:24 BoogieIcfgContainer [2018-11-18 17:19:24,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:19:24,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 17:19:24,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 17:19:24,591 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 17:19:24,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:19:24" (1/3) ... [2018-11-18 17:19:24,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3e9d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:19:24, skipping insertion in model container [2018-11-18 17:19:24,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:19:24" (2/3) ... [2018-11-18 17:19:24,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3e9d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:19:24, skipping insertion in model container [2018-11-18 17:19:24,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:19:24" (3/3) ... [2018-11-18 17:19:24,593 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250_true-unreach-call.c [2018-11-18 17:19:24,599 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 17:19:24,603 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 17:19:24,611 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 17:19:24,631 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 17:19:24,632 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 17:19:24,632 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 17:19:24,632 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 17:19:24,632 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:19:24,632 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:19:24,632 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 17:19:24,632 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:19:24,632 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 17:19:24,644 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-11-18 17:19:24,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 17:19:24,649 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:19:24,649 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:19:24,651 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:19:24,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:19:24,655 INFO L82 PathProgramCache]: Analyzing trace with hash 454092354, now seen corresponding path program 1 times [2018-11-18 17:19:24,657 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:19:24,657 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-18 17:19:24,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:19:24,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:19:24,707 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:19:24,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:19:24,721 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:19:24,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:19:24,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:19:24,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 17:19:24,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 17:19:24,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 17:19:24,745 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2018-11-18 17:19:24,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:19:24,761 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2018-11-18 17:19:24,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 17:19:24,762 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-11-18 17:19:24,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:19:24,768 INFO L225 Difference]: With dead ends: 65 [2018-11-18 17:19:24,768 INFO L226 Difference]: Without dead ends: 33 [2018-11-18 17:19:24,770 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 17:19:24,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-18 17:19:24,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-18 17:19:24,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 17:19:24,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2018-11-18 17:19:24,797 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 24 [2018-11-18 17:19:24,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:19:24,798 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2018-11-18 17:19:24,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 17:19:24,798 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2018-11-18 17:19:24,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 17:19:24,800 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:19:24,800 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:19:24,800 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:19:24,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:19:24,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1280284357, now seen corresponding path program 1 times [2018-11-18 17:19:24,801 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:19:24,801 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-18 17:19:24,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:19:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:19:24,847 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:19:24,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:19:24,880 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:19:24,887 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:19:24,887 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 17:19:24,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:19:24,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:19:24,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:19:24,889 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 4 states. [2018-11-18 17:19:24,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:19:24,909 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2018-11-18 17:19:24,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 17:19:24,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-18 17:19:24,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:19:24,911 INFO L225 Difference]: With dead ends: 46 [2018-11-18 17:19:24,912 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 17:19:24,912 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:19:24,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 17:19:24,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-18 17:19:24,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 17:19:24,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-18 17:19:24,919 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 25 [2018-11-18 17:19:24,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:19:24,919 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-18 17:19:24,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:19:24,919 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-18 17:19:24,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 17:19:24,920 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:19:24,920 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:19:24,921 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:19:24,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:19:24,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1130727099, now seen corresponding path program 1 times [2018-11-18 17:19:24,921 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:19:24,921 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-18 17:19:24,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:19:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:19:24,960 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:19:24,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:19:24,979 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:19:24,990 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:19:24,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 17:19:24,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:19:24,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:19:24,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:19:24,991 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-11-18 17:19:25,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:19:25,008 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-18 17:19:25,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 17:19:25,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-11-18 17:19:25,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:19:25,009 INFO L225 Difference]: With dead ends: 49 [2018-11-18 17:19:25,009 INFO L226 Difference]: Without dead ends: 39 [2018-11-18 17:19:25,010 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:19:25,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-18 17:19:25,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-18 17:19:25,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 17:19:25,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-18 17:19:25,014 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 26 [2018-11-18 17:19:25,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:19:25,014 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-18 17:19:25,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:19:25,014 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-18 17:19:25,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 17:19:25,015 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:19:25,015 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:19:25,015 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:19:25,016 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:19:25,016 INFO L82 PathProgramCache]: Analyzing trace with hash 263717065, now seen corresponding path program 1 times [2018-11-18 17:19:25,016 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:19:25,016 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-18 17:19:25,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:19:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:19:25,060 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:19:25,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:19:25,072 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:19:25,086 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:19:25,087 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 17:19:25,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:19:25,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:19:25,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:19:25,087 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-11-18 17:19:25,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:19:25,105 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-18 17:19:25,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 17:19:25,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-18 17:19:25,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:19:25,107 INFO L225 Difference]: With dead ends: 49 [2018-11-18 17:19:25,107 INFO L226 Difference]: Without dead ends: 39 [2018-11-18 17:19:25,107 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:19:25,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-18 17:19:25,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-18 17:19:25,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 17:19:25,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-18 17:19:25,113 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 27 [2018-11-18 17:19:25,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:19:25,113 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-18 17:19:25,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:19:25,113 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-18 17:19:25,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 17:19:25,114 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:19:25,114 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:19:25,114 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:19:25,114 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:19:25,114 INFO L82 PathProgramCache]: Analyzing trace with hash -631798839, now seen corresponding path program 1 times [2018-11-18 17:19:25,115 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:19:25,115 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-18 17:19:25,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:19:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:19:25,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:19:25,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:19:25,169 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:19:25,180 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:19:25,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 17:19:25,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:19:25,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:19:25,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:19:25,181 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-11-18 17:19:25,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:19:25,199 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-18 17:19:25,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 17:19:25,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-11-18 17:19:25,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:19:25,203 INFO L225 Difference]: With dead ends: 49 [2018-11-18 17:19:25,203 INFO L226 Difference]: Without dead ends: 39 [2018-11-18 17:19:25,203 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:19:25,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-18 17:19:25,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-18 17:19:25,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 17:19:25,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-18 17:19:25,208 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 28 [2018-11-18 17:19:25,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:19:25,208 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-18 17:19:25,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:19:25,209 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-18 17:19:25,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 17:19:25,209 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:19:25,210 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:19:25,210 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:19:25,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:19:25,210 INFO L82 PathProgramCache]: Analyzing trace with hash -925201846, now seen corresponding path program 1 times [2018-11-18 17:19:25,211 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:19:25,211 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-11-18 17:19:25,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:19:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:19:25,245 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:19:25,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:19:25,354 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:19:25,364 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:19:25,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-18 17:19:25,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 17:19:25,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 17:19:25,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-18 17:19:25,365 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 9 states. [2018-11-18 17:19:25,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:19:25,557 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-11-18 17:19:25,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 17:19:25,558 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-11-18 17:19:25,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:19:25,559 INFO L225 Difference]: With dead ends: 43 [2018-11-18 17:19:25,559 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 17:19:25,559 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-11-18 17:19:25,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 17:19:25,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-11-18 17:19:25,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 17:19:25,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2018-11-18 17:19:25,564 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 28 [2018-11-18 17:19:25,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:19:25,565 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2018-11-18 17:19:25,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 17:19:25,565 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2018-11-18 17:19:25,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-18 17:19:25,566 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:19:25,566 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:19:25,566 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:19:25,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:19:25,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1882790959, now seen corresponding path program 1 times [2018-11-18 17:19:25,568 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:19:25,568 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-11-18 17:19:25,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:19:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:19:25,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:19:25,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 17:19:25,653 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:19:25,663 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:19:25,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 17:19:25,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:19:25,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:19:25,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:19:25,664 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 4 states. [2018-11-18 17:19:25,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:19:25,679 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-11-18 17:19:25,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 17:19:25,679 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-11-18 17:19:25,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:19:25,680 INFO L225 Difference]: With dead ends: 46 [2018-11-18 17:19:25,680 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 17:19:25,680 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:19:25,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 17:19:25,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-18 17:19:25,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 17:19:25,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-11-18 17:19:25,684 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 33 [2018-11-18 17:19:25,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:19:25,685 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-11-18 17:19:25,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:19:25,685 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-11-18 17:19:25,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-18 17:19:25,686 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:19:25,686 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:19:25,686 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:19:25,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:19:25,687 INFO L82 PathProgramCache]: Analyzing trace with hash 222262197, now seen corresponding path program 1 times [2018-11-18 17:19:25,687 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:19:25,687 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-11-18 17:19:25,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:19:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:19:25,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:19:25,757 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 17:19:25,757 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:19:25,769 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:19:25,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 17:19:25,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:19:25,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:19:25,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:19:25,770 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-11-18 17:19:25,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:19:25,790 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2018-11-18 17:19:25,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 17:19:25,790 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-11-18 17:19:25,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:19:25,791 INFO L225 Difference]: With dead ends: 49 [2018-11-18 17:19:25,791 INFO L226 Difference]: Without dead ends: 39 [2018-11-18 17:19:25,791 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:19:25,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-18 17:19:25,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-18 17:19:25,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 17:19:25,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-11-18 17:19:25,798 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 34 [2018-11-18 17:19:25,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:19:25,798 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-11-18 17:19:25,799 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:19:25,799 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-11-18 17:19:25,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-18 17:19:25,799 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:19:25,799 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:19:25,800 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:19:25,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:19:25,800 INFO L82 PathProgramCache]: Analyzing trace with hash -598048468, now seen corresponding path program 1 times [2018-11-18 17:19:25,800 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:19:25,800 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-11-18 17:19:25,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:19:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:19:25,855 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:19:25,970 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 17:19:25,970 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:19:25,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:19:25,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-11-18 17:19:25,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 17:19:25,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 17:19:25,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-11-18 17:19:25,977 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 10 states. [2018-11-18 17:19:26,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:19:26,228 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2018-11-18 17:19:26,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 17:19:26,229 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-11-18 17:19:26,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:19:26,229 INFO L225 Difference]: With dead ends: 44 [2018-11-18 17:19:26,230 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 17:19:26,230 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-11-18 17:19:26,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 17:19:26,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-18 17:19:26,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 17:19:26,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-11-18 17:19:26,234 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 35 [2018-11-18 17:19:26,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:19:26,238 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-11-18 17:19:26,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 17:19:26,239 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-11-18 17:19:26,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-18 17:19:26,239 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:19:26,239 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:19:26,240 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:19:26,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:19:26,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1299113046, now seen corresponding path program 1 times [2018-11-18 17:19:26,240 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:19:26,240 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-11-18 17:19:26,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:19:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:19:26,293 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:19:26,377 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 17:19:26,377 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:19:26,385 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:19:26,385 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 17:19:26,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 17:19:26,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 17:19:26,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 17:19:26,386 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2018-11-18 17:19:26,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:19:26,481 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2018-11-18 17:19:26,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 17:19:26,482 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-11-18 17:19:26,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:19:26,483 INFO L225 Difference]: With dead ends: 46 [2018-11-18 17:19:26,483 INFO L226 Difference]: Without dead ends: 33 [2018-11-18 17:19:26,483 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 17:19:26,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-18 17:19:26,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-18 17:19:26,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 17:19:26,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-18 17:19:26,487 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-11-18 17:19:26,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:19:26,487 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-18 17:19:26,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 17:19:26,487 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-18 17:19:26,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-18 17:19:26,488 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:19:26,488 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:19:26,488 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:19:26,488 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:19:26,488 INFO L82 PathProgramCache]: Analyzing trace with hash -888133901, now seen corresponding path program 1 times [2018-11-18 17:19:26,488 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:19:26,488 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-11-18 17:19:26,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:19:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:19:26,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:19:26,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 17:19:26,527 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:19:26,534 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:19:26,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 17:19:26,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:19:26,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:19:26,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:19:26,535 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-11-18 17:19:26,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:19:26,542 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-11-18 17:19:26,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 17:19:26,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-11-18 17:19:26,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:19:26,543 INFO L225 Difference]: With dead ends: 46 [2018-11-18 17:19:26,543 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 17:19:26,543 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:19:26,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 17:19:26,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-18 17:19:26,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 17:19:26,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-18 17:19:26,546 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-11-18 17:19:26,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:19:26,546 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-18 17:19:26,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:19:26,546 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-18 17:19:26,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-18 17:19:26,546 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:19:26,547 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:19:26,547 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:19:26,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:19:26,547 INFO L82 PathProgramCache]: Analyzing trace with hash -2124286599, now seen corresponding path program 1 times [2018-11-18 17:19:26,547 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:19:26,547 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-11-18 17:19:26,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:19:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:19:26,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:19:26,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 17:19:26,609 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:19:26,616 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:19:26,617 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 17:19:26,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:19:26,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:19:26,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:19:26,617 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-11-18 17:19:26,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:19:26,626 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-11-18 17:19:26,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 17:19:26,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-11-18 17:19:26,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:19:26,627 INFO L225 Difference]: With dead ends: 46 [2018-11-18 17:19:26,627 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 17:19:26,628 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:19:26,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 17:19:26,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-18 17:19:26,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 17:19:26,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-18 17:19:26,630 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 36 [2018-11-18 17:19:26,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:19:26,631 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-18 17:19:26,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:19:26,631 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-18 17:19:26,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-18 17:19:26,631 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:19:26,631 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:19:26,631 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:19:26,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:19:26,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1877277690, now seen corresponding path program 1 times [2018-11-18 17:19:26,632 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:19:26,632 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-11-18 17:19:26,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:19:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:19:26,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:19:26,793 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 17:19:26,793 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:19:26,804 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:19:26,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-18 17:19:26,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 17:19:26,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 17:19:26,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-18 17:19:26,805 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 9 states. [2018-11-18 17:19:26,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:19:26,938 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-18 17:19:26,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 17:19:26,938 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-11-18 17:19:26,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:19:26,939 INFO L225 Difference]: With dead ends: 33 [2018-11-18 17:19:26,939 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 17:19:26,939 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-11-18 17:19:26,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 17:19:26,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 17:19:26,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 17:19:26,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 17:19:26,940 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2018-11-18 17:19:26,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:19:26,940 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 17:19:26,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 17:19:26,940 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 17:19:26,940 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 17:19:26,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 17:19:27,063 INFO L425 ceAbstractionStarter]: For program point isnan_floatFINAL(line 54) no Hoare annotation was computed. [2018-11-18 17:19:27,064 INFO L428 ceAbstractionStarter]: At program point isnan_floatENTRY(line 54) the Hoare annotation is: true [2018-11-18 17:19:27,064 INFO L425 ceAbstractionStarter]: For program point isnan_floatEXIT(line 54) no Hoare annotation was computed. [2018-11-18 17:19:27,064 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 17:19:27,064 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 17:19:27,064 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 17:19:27,064 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 17:19:27,064 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 17:19:27,064 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 17:19:27,064 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 17:19:27,064 INFO L425 ceAbstractionStarter]: For program point L65(line 65) no Hoare annotation was computed. [2018-11-18 17:19:27,064 INFO L421 ceAbstractionStarter]: At program point L64(line 64) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (and (= main_~res~0 .cse0) (= main_~y~0 .cse0))) [2018-11-18 17:19:27,064 INFO L425 ceAbstractionStarter]: For program point L64-1(lines 64 67) no Hoare annotation was computed. [2018-11-18 17:19:27,064 INFO L421 ceAbstractionStarter]: At program point L62(line 62) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (and (= main_~y~0 .cse0) (= main_~x~0 .cse0))) [2018-11-18 17:19:27,064 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 56 70) the Hoare annotation is: true [2018-11-18 17:19:27,065 INFO L425 ceAbstractionStarter]: For program point L62-1(line 62) no Hoare annotation was computed. [2018-11-18 17:19:27,065 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 56 70) no Hoare annotation was computed. [2018-11-18 17:19:27,065 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 65) no Hoare annotation was computed. [2018-11-18 17:19:27,065 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 56 70) no Hoare annotation was computed. [2018-11-18 17:19:27,065 INFO L425 ceAbstractionStarter]: For program point fmax_floatEXIT(lines 42 51) no Hoare annotation was computed. [2018-11-18 17:19:27,065 INFO L428 ceAbstractionStarter]: At program point fmax_floatENTRY(lines 42 51) the Hoare annotation is: true [2018-11-18 17:19:27,065 INFO L425 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2018-11-18 17:19:27,065 INFO L425 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2018-11-18 17:19:27,065 INFO L421 ceAbstractionStarter]: At program point L47(line 47) the Hoare annotation is: (and (= |fmax_float_#in~y| fmax_float_~y) (= |fmax_float_#in~x| fmax_float_~x)) [2018-11-18 17:19:27,065 INFO L425 ceAbstractionStarter]: For program point L47-1(lines 47 49) no Hoare annotation was computed. [2018-11-18 17:19:27,065 INFO L421 ceAbstractionStarter]: At program point L43(line 43) the Hoare annotation is: (and (= |fmax_float_#in~y| fmax_float_~y) (= |fmax_float_#in~x| fmax_float_~x)) [2018-11-18 17:19:27,065 INFO L425 ceAbstractionStarter]: For program point L43-1(lines 43 45) no Hoare annotation was computed. [2018-11-18 17:19:27,065 INFO L425 ceAbstractionStarter]: For program point fmax_floatFINAL(lines 42 51) no Hoare annotation was computed. [2018-11-18 17:19:27,065 INFO L425 ceAbstractionStarter]: For program point L33(lines 33 39) no Hoare annotation was computed. [2018-11-18 17:19:27,066 INFO L425 ceAbstractionStarter]: For program point __fpclassify_floatFINAL(lines 19 40) no Hoare annotation was computed. [2018-11-18 17:19:27,066 INFO L425 ceAbstractionStarter]: For program point L36(lines 36 39) no Hoare annotation was computed. [2018-11-18 17:19:27,066 INFO L425 ceAbstractionStarter]: For program point L30(lines 30 39) no Hoare annotation was computed. [2018-11-18 17:19:27,066 INFO L425 ceAbstractionStarter]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2018-11-18 17:19:27,066 INFO L428 ceAbstractionStarter]: At program point L22-3(lines 22 26) the Hoare annotation is: true [2018-11-18 17:19:27,066 INFO L425 ceAbstractionStarter]: For program point L22-4(lines 19 40) no Hoare annotation was computed. [2018-11-18 17:19:27,066 INFO L428 ceAbstractionStarter]: At program point __fpclassify_floatENTRY(lines 19 40) the Hoare annotation is: true [2018-11-18 17:19:27,066 INFO L425 ceAbstractionStarter]: For program point __fpclassify_floatEXIT(lines 19 40) no Hoare annotation was computed. [2018-11-18 17:19:27,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 05:19:27 BoogieIcfgContainer [2018-11-18 17:19:27,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 17:19:27,071 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 17:19:27,071 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 17:19:27,071 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 17:19:27,071 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:19:24" (3/4) ... [2018-11-18 17:19:27,073 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 17:19:27,077 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-11-18 17:19:27,077 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 17:19:27,078 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 17:19:27,078 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_float [2018-11-18 17:19:27,078 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-11-18 17:19:27,081 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-11-18 17:19:27,081 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-18 17:19:27,081 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 17:19:27,109 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_77265726-ec29-4a55-8816-c0d3473ef0de/bin-2019/utaipan/witness.graphml [2018-11-18 17:19:27,110 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 17:19:27,110 INFO L168 Benchmark]: Toolchain (without parser) took 3009.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 204.5 MB). Free memory was 951.8 MB in the beginning and 1.2 GB in the end (delta: -232.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:19:27,111 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:19:27,112 INFO L168 Benchmark]: CACSL2BoogieTranslator took 190.35 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 935.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 17:19:27,112 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.08 ms. Allocated memory is still 1.0 GB. Free memory is still 935.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:19:27,112 INFO L168 Benchmark]: Boogie Preprocessor took 20.41 ms. Allocated memory is still 1.0 GB. Free memory is still 935.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:19:27,112 INFO L168 Benchmark]: RCFGBuilder took 259.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -157.7 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. [2018-11-18 17:19:27,113 INFO L168 Benchmark]: TraceAbstraction took 2481.62 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 77.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -98.6 MB). Peak memory consumption was 310.0 MB. Max. memory is 11.5 GB. [2018-11-18 17:19:27,113 INFO L168 Benchmark]: Witness Printer took 39.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. [2018-11-18 17:19:27,115 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 190.35 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 935.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.08 ms. Allocated memory is still 1.0 GB. Free memory is still 935.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.41 ms. Allocated memory is still 1.0 GB. Free memory is still 935.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 259.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -157.7 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2481.62 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 77.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -98.6 MB). Peak memory consumption was 310.0 MB. Max. memory is 11.5 GB. * Witness Printer took 39.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 65]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. SAFE Result, 2.4s OverallTime, 13 OverallIterations, 2 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 498 SDtfs, 31 SDslu, 1315 SDs, 0 SdLazy, 221 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 19 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 28 PreInvPairs, 33 NumberOfFragments, 48 HoareAnnotationTreeSize, 28 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 402 NumberOfCodeBlocks, 402 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 389 ConstructedInterpolants, 3 QuantifiedInterpolants, 21567 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1053 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 42/42 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...