./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1230_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_e922ebfc-aed2-4337-96dd-44bddec7ac65/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1230_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/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 31da98a788dd1938c78053bade42bc512d4e8954 .............................................................................................................................................................................................................................................................................................................................................................................................. 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_e922ebfc-aed2-4337-96dd-44bddec7ac65/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1230_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/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 31da98a788dd1938c78053bade42bc512d4e8954 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 11:17:02,574 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 11:17:02,575 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 11:17:02,583 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 11:17:02,583 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 11:17:02,584 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 11:17:02,584 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 11:17:02,585 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 11:17:02,587 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 11:17:02,587 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 11:17:02,588 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 11:17:02,588 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 11:17:02,589 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 11:17:02,589 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 11:17:02,590 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 11:17:02,591 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 11:17:02,592 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 11:17:02,593 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 11:17:02,594 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 11:17:02,595 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 11:17:02,596 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 11:17:02,597 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 11:17:02,598 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 11:17:02,598 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 11:17:02,598 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 11:17:02,599 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 11:17:02,600 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 11:17:02,600 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 11:17:02,601 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 11:17:02,601 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 11:17:02,601 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 11:17:02,602 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 11:17:02,602 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 11:17:02,602 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 11:17:02,603 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 11:17:02,603 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 11:17:02,603 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 11:17:02,612 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 11:17:02,613 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 11:17:02,613 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 11:17:02,613 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 11:17:02,613 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 11:17:02,614 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 11:17:02,614 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 11:17:02,614 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 11:17:02,614 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 11:17:02,614 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 11:17:02,614 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 11:17:02,614 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 11:17:02,615 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 11:17:02,615 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 11:17:02,615 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 11:17:02,616 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 11:17:02,616 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 11:17:02,616 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 11:17:02,616 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 11:17:02,616 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 11:17:02,616 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 11:17:02,616 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 11:17:02,617 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 11:17:02,617 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 11:17:02,617 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 11:17:02,617 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 11:17:02,617 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 11:17:02,617 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 11:17:02,617 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 11:17:02,617 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:17:02,618 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 11:17:02,618 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 11:17:02,618 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 11:17:02,618 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 11:17:02,618 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 11:17:02,618 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 11:17:02,618 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 11:17:02,620 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_e922ebfc-aed2-4337-96dd-44bddec7ac65/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 -> 31da98a788dd1938c78053bade42bc512d4e8954 [2018-11-18 11:17:02,645 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 11:17:02,653 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 11:17:02,656 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 11:17:02,657 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 11:17:02,657 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 11:17:02,658 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1230_true-unreach-call.c [2018-11-18 11:17:02,698 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/bin-2019/utaipan/data/48032566b/a8c6fdbd198d47f18f96de8fbc8cf935/FLAG0b481d6d6 [2018-11-18 11:17:03,040 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 11:17:03,040 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/sv-benchmarks/c/float-newlib/float_req_bl_1230_true-unreach-call.c [2018-11-18 11:17:03,046 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/bin-2019/utaipan/data/48032566b/a8c6fdbd198d47f18f96de8fbc8cf935/FLAG0b481d6d6 [2018-11-18 11:17:03,057 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/bin-2019/utaipan/data/48032566b/a8c6fdbd198d47f18f96de8fbc8cf935 [2018-11-18 11:17:03,059 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 11:17:03,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 11:17:03,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 11:17:03,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 11:17:03,063 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 11:17:03,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:17:03" (1/1) ... [2018-11-18 11:17:03,065 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 11:17:03, skipping insertion in model container [2018-11-18 11:17:03,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:17:03" (1/1) ... [2018-11-18 11:17:03,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 11:17:03,087 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 11:17:03,206 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:17:03,208 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 11:17:03,224 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:17:03,237 INFO L195 MainTranslator]: Completed translation [2018-11-18 11:17:03,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:17:03 WrapperNode [2018-11-18 11:17:03,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 11:17:03,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 11:17:03,238 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 11:17:03,238 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 11:17:03,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:17:03" (1/1) ... [2018-11-18 11:17:03,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:17:03" (1/1) ... [2018-11-18 11:17:03,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 11:17:03,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 11:17:03,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 11:17:03,257 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 11:17:03,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:17:03" (1/1) ... [2018-11-18 11:17:03,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:17:03" (1/1) ... [2018-11-18 11:17:03,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:17:03" (1/1) ... [2018-11-18 11:17:03,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:17:03" (1/1) ... [2018-11-18 11:17:03,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:17:03" (1/1) ... [2018-11-18 11:17:03,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:17:03" (1/1) ... [2018-11-18 11:17:03,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:17:03" (1/1) ... [2018-11-18 11:17:03,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 11:17:03,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 11:17:03,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 11:17:03,315 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 11:17:03,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:17:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/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 11:17:03,356 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 11:17:03,356 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 11:17:03,356 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-18 11:17:03,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-18 11:17:03,356 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-18 11:17:03,356 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-18 11:17:03,357 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-11-18 11:17:03,357 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-11-18 11:17:03,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 11:17:03,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 11:17:03,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 11:17:03,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 11:17:03,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 11:17:03,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 11:17:03,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 11:17:03,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 11:17:03,568 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 11:17:03,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:17:03 BoogieIcfgContainer [2018-11-18 11:17:03,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 11:17:03,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 11:17:03,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 11:17:03,571 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 11:17:03,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:17:03" (1/3) ... [2018-11-18 11:17:03,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f0523b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:17:03, skipping insertion in model container [2018-11-18 11:17:03,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:17:03" (2/3) ... [2018-11-18 11:17:03,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f0523b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:17:03, skipping insertion in model container [2018-11-18 11:17:03,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:17:03" (3/3) ... [2018-11-18 11:17:03,573 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230_true-unreach-call.c [2018-11-18 11:17:03,579 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 11:17:03,584 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 11:17:03,595 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 11:17:03,614 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 11:17:03,614 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 11:17:03,614 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 11:17:03,614 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 11:17:03,614 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 11:17:03,614 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 11:17:03,614 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 11:17:03,614 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 11:17:03,625 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-11-18 11:17:03,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 11:17:03,629 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:17:03,629 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 11:17:03,631 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:17:03,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:17:03,635 INFO L82 PathProgramCache]: Analyzing trace with hash 380996298, now seen corresponding path program 1 times [2018-11-18 11:17:03,636 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:17:03,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:17:03,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:17:03,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:17:03,669 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:17:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:17:03,736 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 11:17:03,738 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:17:03,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:17:03,738 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:17:03,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 11:17:03,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 11:17:03,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 11:17:03,751 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-11-18 11:17:03,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:17:03,769 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2018-11-18 11:17:03,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 11:17:03,770 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-11-18 11:17:03,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:17:03,778 INFO L225 Difference]: With dead ends: 71 [2018-11-18 11:17:03,778 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 11:17:03,781 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 11:17:03,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 11:17:03,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-18 11:17:03,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 11:17:03,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-11-18 11:17:03,808 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2018-11-18 11:17:03,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:17:03,808 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-11-18 11:17:03,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 11:17:03,808 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-11-18 11:17:03,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 11:17:03,810 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:17:03,810 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 11:17:03,810 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:17:03,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:17:03,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1403510606, now seen corresponding path program 1 times [2018-11-18 11:17:03,810 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:17:03,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:17:03,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:17:03,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:17:03,811 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:17:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:17:03,873 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 11:17:03,874 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:17:03,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:17:03,874 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:17:03,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:17:03,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:17:03,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:17:03,877 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-11-18 11:17:03,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:17:03,923 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-11-18 11:17:03,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:17:03,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-18 11:17:03,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:17:03,925 INFO L225 Difference]: With dead ends: 51 [2018-11-18 11:17:03,925 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 11:17:03,926 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 11:17:03,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 11:17:03,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-18 11:17:03,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 11:17:03,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-18 11:17:03,933 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2018-11-18 11:17:03,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:17:03,933 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-18 11:17:03,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:17:03,933 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-18 11:17:03,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 11:17:03,934 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:17:03,935 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 11:17:03,935 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:17:03,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:17:03,935 INFO L82 PathProgramCache]: Analyzing trace with hash -7683119, now seen corresponding path program 1 times [2018-11-18 11:17:03,935 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:17:03,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:17:03,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:17:03,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:17:03,937 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:17:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:17:03,984 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 11:17:03,984 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:17:03,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:17:03,984 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:17:03,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:17:03,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:17:03,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:17:03,985 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-11-18 11:17:04,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:17:04,013 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2018-11-18 11:17:04,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:17:04,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-18 11:17:04,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:17:04,014 INFO L225 Difference]: With dead ends: 55 [2018-11-18 11:17:04,014 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 11:17:04,015 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 11:17:04,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 11:17:04,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-11-18 11:17:04,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 11:17:04,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-18 11:17:04,020 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2018-11-18 11:17:04,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:17:04,021 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-18 11:17:04,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:17:04,021 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-18 11:17:04,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 11:17:04,022 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:17:04,022 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 11:17:04,022 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:17:04,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:17:04,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1499868690, now seen corresponding path program 1 times [2018-11-18 11:17:04,023 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:17:04,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:17:04,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:17:04,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:17:04,024 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:17:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:17:04,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:17:04,065 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 11:17:04,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 11:17:04 BoogieIcfgContainer [2018-11-18 11:17:04,083 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 11:17:04,084 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 11:17:04,084 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 11:17:04,084 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 11:17:04,084 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:17:03" (3/4) ... [2018-11-18 11:17:04,086 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 11:17:04,087 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 11:17:04,087 INFO L168 Benchmark]: Toolchain (without parser) took 1027.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -109.1 MB). Peak memory consumption was 32.0 MB. Max. memory is 11.5 GB. [2018-11-18 11:17:04,088 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:17:04,088 INFO L168 Benchmark]: CACSL2BoogieTranslator took 177.29 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 946.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-18 11:17:04,089 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.84 ms. Allocated memory is still 1.0 GB. Free memory is still 946.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:17:04,089 INFO L168 Benchmark]: Boogie Preprocessor took 57.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -191.7 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-18 11:17:04,090 INFO L168 Benchmark]: RCFGBuilder took 253.55 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 11:17:04,090 INFO L168 Benchmark]: TraceAbstraction took 514.33 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: 49.5 MB). Peak memory consumption was 49.5 MB. Max. memory is 11.5 GB. [2018-11-18 11:17:04,090 INFO L168 Benchmark]: Witness Printer took 3.11 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 11:17:04,092 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 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 177.29 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 946.8 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 18.84 ms. Allocated memory is still 1.0 GB. Free memory is still 946.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 57.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -191.7 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 253.55 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 514.33 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: 49.5 MB). Peak memory consumption was 49.5 MB. Max. memory is 11.5 GB. * Witness Printer took 3.11 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: 59]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 54. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L55] float y = 0.0f / 0.0f; [L56] CALL, EXPR fmin_float(x, y) VAL [\old(x)=2139095043, \old(y)=2139095044] [L35] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=2139095043] [L12] __uint32_t w; VAL [\old(x)=2139095043, x=2139095043] [L15] FCALL ieee_float_shape_type gf_u; [L16] FCALL gf_u.value = (x) [L17] EXPR, FCALL gf_u.word [L17] (w) = gf_u.word [L18] COND FALSE !(0) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L20] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L22-L23] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L25-L26] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L28] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L31] RET return 0; VAL [\old(x)=2139095043, \result=0, w=2139095041, x=2139095043] [L35] EXPR __fpclassify_float(x) VAL [\old(x)=2139095043, \old(y)=2139095044, __fpclassify_float(x)=0, x=2139095043, y=2139095044] [L35] COND TRUE __fpclassify_float(x) == 0 [L36] RET return y; VAL [\old(x)=2139095043, \old(y)=2139095044, \result=2139095044, x=2139095043, y=2139095044] [L56] EXPR fmin_float(x, y) VAL [fmin_float(x, y)=2139095044, x=2139095043, y=2139095044] [L56] float res = fmin_float(x, y); [L58] CALL, EXPR isnan_float(res) VAL [\old(x)=2139095044] [L44] RET return x != x; VAL [\old(x)=2139095044, \result=0, x=2139095044] [L58] EXPR isnan_float(res) VAL [isnan_float(res)=0, res=2139095044, x=2139095043, y=2139095044] [L58] COND TRUE !isnan_float(res) [L59] __VERIFIER_error() VAL [res=2139095044, x=2139095043, y=2139095044] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 129 SDtfs, 0 SDslu, 152 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2582 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5842f4b [2018-11-18 11:17:05,582 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 11:17:05,584 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 11:17:05,591 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 11:17:05,591 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 11:17:05,591 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 11:17:05,592 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 11:17:05,593 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 11:17:05,595 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 11:17:05,596 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 11:17:05,596 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 11:17:05,596 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 11:17:05,597 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 11:17:05,598 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 11:17:05,599 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 11:17:05,600 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 11:17:05,600 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 11:17:05,601 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 11:17:05,603 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 11:17:05,604 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 11:17:05,605 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 11:17:05,606 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 11:17:05,608 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 11:17:05,608 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 11:17:05,608 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 11:17:05,609 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 11:17:05,610 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 11:17:05,610 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 11:17:05,611 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 11:17:05,612 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 11:17:05,612 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 11:17:05,613 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 11:17:05,613 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 11:17:05,613 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 11:17:05,614 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 11:17:05,614 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 11:17:05,615 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 11:17:05,623 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 11:17:05,623 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 11:17:05,624 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 11:17:05,624 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 11:17:05,624 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 11:17:05,624 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 11:17:05,624 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 11:17:05,624 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 11:17:05,624 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 11:17:05,625 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 11:17:05,625 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 11:17:05,625 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 11:17:05,625 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 11:17:05,625 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 11:17:05,625 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 11:17:05,625 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 11:17:05,626 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 11:17:05,626 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 11:17:05,626 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 11:17:05,626 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 11:17:05,626 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 11:17:05,626 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 11:17:05,626 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 11:17:05,628 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 11:17:05,628 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 11:17:05,628 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 11:17:05,628 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 11:17:05,628 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:17:05,628 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 11:17:05,628 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 11:17:05,629 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 11:17:05,629 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 11:17:05,629 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 11:17:05,629 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 11:17:05,629 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 11:17:05,629 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_e922ebfc-aed2-4337-96dd-44bddec7ac65/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 -> 31da98a788dd1938c78053bade42bc512d4e8954 [2018-11-18 11:17:05,656 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 11:17:05,664 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 11:17:05,666 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 11:17:05,667 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 11:17:05,667 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 11:17:05,668 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1230_true-unreach-call.c [2018-11-18 11:17:05,702 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/bin-2019/utaipan/data/2d6b3347b/30e20a9933d94bdfbadbddc71c1a1820/FLAG1f64f9f74 [2018-11-18 11:17:06,033 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 11:17:06,033 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/sv-benchmarks/c/float-newlib/float_req_bl_1230_true-unreach-call.c [2018-11-18 11:17:06,037 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/bin-2019/utaipan/data/2d6b3347b/30e20a9933d94bdfbadbddc71c1a1820/FLAG1f64f9f74 [2018-11-18 11:17:06,045 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/bin-2019/utaipan/data/2d6b3347b/30e20a9933d94bdfbadbddc71c1a1820 [2018-11-18 11:17:06,047 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 11:17:06,048 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 11:17:06,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 11:17:06,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 11:17:06,052 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 11:17:06,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:17:06" (1/1) ... [2018-11-18 11:17:06,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c1c7639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:17:06, skipping insertion in model container [2018-11-18 11:17:06,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:17:06" (1/1) ... [2018-11-18 11:17:06,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 11:17:06,079 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 11:17:06,225 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:17:06,230 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 11:17:06,249 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:17:06,268 INFO L195 MainTranslator]: Completed translation [2018-11-18 11:17:06,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:17:06 WrapperNode [2018-11-18 11:17:06,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 11:17:06,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 11:17:06,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 11:17:06,270 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 11:17:06,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:17:06" (1/1) ... [2018-11-18 11:17:06,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:17:06" (1/1) ... [2018-11-18 11:17:06,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 11:17:06,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 11:17:06,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 11:17:06,292 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 11:17:06,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:17:06" (1/1) ... [2018-11-18 11:17:06,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:17:06" (1/1) ... [2018-11-18 11:17:06,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:17:06" (1/1) ... [2018-11-18 11:17:06,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:17:06" (1/1) ... [2018-11-18 11:17:06,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:17:06" (1/1) ... [2018-11-18 11:17:06,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:17:06" (1/1) ... [2018-11-18 11:17:06,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:17:06" (1/1) ... [2018-11-18 11:17:06,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 11:17:06,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 11:17:06,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 11:17:06,317 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 11:17:06,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:17:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/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 11:17:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 11:17:06,401 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 11:17:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-18 11:17:06,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-18 11:17:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-18 11:17:06,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-18 11:17:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-11-18 11:17:06,401 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-11-18 11:17:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 11:17:06,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 11:17:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 11:17:06,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 11:17:06,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 11:17:06,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 11:17:06,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-18 11:17:06,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 11:17:06,553 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 11:17:06,580 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 11:17:06,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:17:06 BoogieIcfgContainer [2018-11-18 11:17:06,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 11:17:06,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 11:17:06,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 11:17:06,584 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 11:17:06,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:17:06" (1/3) ... [2018-11-18 11:17:06,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b90a416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:17:06, skipping insertion in model container [2018-11-18 11:17:06,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:17:06" (2/3) ... [2018-11-18 11:17:06,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b90a416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:17:06, skipping insertion in model container [2018-11-18 11:17:06,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:17:06" (3/3) ... [2018-11-18 11:17:06,587 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230_true-unreach-call.c [2018-11-18 11:17:06,596 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 11:17:06,600 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 11:17:06,610 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 11:17:06,631 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 11:17:06,632 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 11:17:06,632 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 11:17:06,632 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 11:17:06,632 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 11:17:06,632 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 11:17:06,632 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 11:17:06,632 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 11:17:06,633 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 11:17:06,643 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-11-18 11:17:06,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 11:17:06,647 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:17:06,648 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 11:17:06,650 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:17:06,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:17:06,653 INFO L82 PathProgramCache]: Analyzing trace with hash -70747444, now seen corresponding path program 1 times [2018-11-18 11:17:06,656 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:17:06,656 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/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 11:17:06,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:17:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:17:06,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:17:06,727 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 11:17:06,728 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:17:06,738 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:17:06,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:17:06,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 11:17:06,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 11:17:06,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 11:17:06,750 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2018-11-18 11:17:06,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:17:06,769 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2018-11-18 11:17:06,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 11:17:06,770 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-11-18 11:17:06,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:17:06,779 INFO L225 Difference]: With dead ends: 65 [2018-11-18 11:17:06,779 INFO L226 Difference]: Without dead ends: 33 [2018-11-18 11:17:06,781 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 11:17:06,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-18 11:17:06,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-18 11:17:06,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 11:17:06,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2018-11-18 11:17:06,808 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 24 [2018-11-18 11:17:06,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:17:06,809 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2018-11-18 11:17:06,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 11:17:06,809 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2018-11-18 11:17:06,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 11:17:06,811 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:17:06,811 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 11:17:06,811 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:17:06,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:17:06,812 INFO L82 PathProgramCache]: Analyzing trace with hash -603858711, now seen corresponding path program 1 times [2018-11-18 11:17:06,812 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:17:06,812 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/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 11:17:06,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:17:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:17:06,867 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:17:06,899 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 11:17:06,899 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:17:06,909 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:17:06,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:17:06,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:17:06,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:17:06,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:17:06,911 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 4 states. [2018-11-18 11:17:06,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:17:06,943 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2018-11-18 11:17:06,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:17:06,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-18 11:17:06,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:17:06,946 INFO L225 Difference]: With dead ends: 46 [2018-11-18 11:17:06,946 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 11:17:06,947 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 11:17:06,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 11:17:06,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-18 11:17:06,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 11:17:06,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-18 11:17:06,953 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 25 [2018-11-18 11:17:06,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:17:06,953 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-18 11:17:06,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:17:06,954 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-18 11:17:06,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 11:17:06,954 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:17:06,955 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 11:17:06,955 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:17:06,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:17:06,955 INFO L82 PathProgramCache]: Analyzing trace with hash 2091368719, now seen corresponding path program 1 times [2018-11-18 11:17:06,956 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:17:06,956 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/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 11:17:06,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:17:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:17:06,992 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:17:07,035 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 11:17:07,035 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:17:07,043 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:17:07,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:17:07,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:17:07,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:17:07,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:17:07,044 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-11-18 11:17:07,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:17:07,066 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-18 11:17:07,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:17:07,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-11-18 11:17:07,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:17:07,068 INFO L225 Difference]: With dead ends: 49 [2018-11-18 11:17:07,068 INFO L226 Difference]: Without dead ends: 39 [2018-11-18 11:17:07,069 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 11:17:07,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-18 11:17:07,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-18 11:17:07,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 11:17:07,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-18 11:17:07,074 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 26 [2018-11-18 11:17:07,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:17:07,075 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-18 11:17:07,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:17:07,075 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-18 11:17:07,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 11:17:07,076 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:17:07,076 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 11:17:07,076 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:17:07,076 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:17:07,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1429538899, now seen corresponding path program 1 times [2018-11-18 11:17:07,077 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:17:07,077 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/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 11:17:07,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:17:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:17:07,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:17:07,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:17:07,142 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:17:07,149 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:17:07,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:17:07,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:17:07,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:17:07,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:17:07,150 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-11-18 11:17:07,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:17:07,174 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-18 11:17:07,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:17:07,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-18 11:17:07,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:17:07,175 INFO L225 Difference]: With dead ends: 49 [2018-11-18 11:17:07,175 INFO L226 Difference]: Without dead ends: 39 [2018-11-18 11:17:07,175 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 11:17:07,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-18 11:17:07,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-18 11:17:07,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 11:17:07,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-18 11:17:07,181 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 27 [2018-11-18 11:17:07,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:17:07,181 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-18 11:17:07,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:17:07,181 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-18 11:17:07,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 11:17:07,182 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:17:07,182 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 11:17:07,182 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:17:07,182 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:17:07,182 INFO L82 PathProgramCache]: Analyzing trace with hash -82137389, now seen corresponding path program 1 times [2018-11-18 11:17:07,183 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:17:07,183 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/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 11:17:07,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:17:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:17:07,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:17:07,246 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 11:17:07,246 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:17:07,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:17:07,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:17:07,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:17:07,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:17:07,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:17:07,255 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-11-18 11:17:07,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:17:07,275 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-18 11:17:07,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:17:07,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-11-18 11:17:07,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:17:07,276 INFO L225 Difference]: With dead ends: 49 [2018-11-18 11:17:07,276 INFO L226 Difference]: Without dead ends: 39 [2018-11-18 11:17:07,277 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 11:17:07,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-18 11:17:07,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-18 11:17:07,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 11:17:07,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-18 11:17:07,280 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 28 [2018-11-18 11:17:07,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:17:07,281 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-18 11:17:07,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:17:07,281 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-18 11:17:07,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 11:17:07,282 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:17:07,282 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:17:07,282 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:17:07,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:17:07,282 INFO L82 PathProgramCache]: Analyzing trace with hash -375540396, now seen corresponding path program 1 times [2018-11-18 11:17:07,283 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:17:07,283 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/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 11:17:07,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:17:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:17:07,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:17:07,483 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 11:17:07,483 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:17:07,494 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:17:07,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-18 11:17:07,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 11:17:07,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 11:17:07,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-18 11:17:07,495 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 9 states. [2018-11-18 11:17:07,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:17:07,732 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-11-18 11:17:07,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 11:17:07,732 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-11-18 11:17:07,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:17:07,733 INFO L225 Difference]: With dead ends: 43 [2018-11-18 11:17:07,733 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 11:17:07,734 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-11-18 11:17:07,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 11:17:07,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-11-18 11:17:07,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 11:17:07,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2018-11-18 11:17:07,738 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 28 [2018-11-18 11:17:07,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:17:07,738 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2018-11-18 11:17:07,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 11:17:07,739 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2018-11-18 11:17:07,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-18 11:17:07,739 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:17:07,740 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 11:17:07,740 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:17:07,740 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:17:07,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1707143507, now seen corresponding path program 1 times [2018-11-18 11:17:07,740 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:17:07,741 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/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 11:17:07,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:17:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:17:07,790 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:17:07,821 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 11:17:07,821 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:17:07,833 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:17:07,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:17:07,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:17:07,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:17:07,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:17:07,834 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 4 states. [2018-11-18 11:17:07,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:17:07,853 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-11-18 11:17:07,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:17:07,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-11-18 11:17:07,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:17:07,854 INFO L225 Difference]: With dead ends: 46 [2018-11-18 11:17:07,855 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 11:17:07,855 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 11:17:07,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 11:17:07,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-18 11:17:07,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 11:17:07,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-11-18 11:17:07,859 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 33 [2018-11-18 11:17:07,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:17:07,860 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-11-18 11:17:07,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:17:07,860 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-11-18 11:17:07,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-18 11:17:07,861 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:17:07,861 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 11:17:07,861 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:17:07,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:17:07,861 INFO L82 PathProgramCache]: Analyzing trace with hash 573147263, now seen corresponding path program 1 times [2018-11-18 11:17:07,862 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:17:07,862 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/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 11:17:07,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:17:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:17:07,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:17:07,953 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 11:17:07,953 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:17:07,964 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:17:07,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:17:07,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:17:07,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:17:07,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:17:07,966 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-11-18 11:17:07,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:17:07,981 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2018-11-18 11:17:07,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:17:07,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-11-18 11:17:07,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:17:07,983 INFO L225 Difference]: With dead ends: 49 [2018-11-18 11:17:07,983 INFO L226 Difference]: Without dead ends: 39 [2018-11-18 11:17:07,983 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 11:17:07,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-18 11:17:07,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-18 11:17:07,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 11:17:07,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-11-18 11:17:07,988 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 34 [2018-11-18 11:17:07,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:17:07,988 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-11-18 11:17:07,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:17:07,988 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-11-18 11:17:07,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-18 11:17:07,989 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:17:07,989 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 11:17:07,989 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:17:07,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:17:07,990 INFO L82 PathProgramCache]: Analyzing trace with hash 668085008, now seen corresponding path program 1 times [2018-11-18 11:17:07,990 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:17:07,990 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/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 11:17:07,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:17:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:17:08,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:17:08,152 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 11:17:08,153 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:17:08,160 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:17:08,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-11-18 11:17:08,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 11:17:08,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 11:17:08,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-11-18 11:17:08,161 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 10 states. [2018-11-18 11:17:08,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:17:08,397 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2018-11-18 11:17:08,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 11:17:08,398 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-11-18 11:17:08,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:17:08,399 INFO L225 Difference]: With dead ends: 44 [2018-11-18 11:17:08,399 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 11:17:08,400 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 11:17:08,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 11:17:08,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-18 11:17:08,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 11:17:08,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-11-18 11:17:08,404 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 35 [2018-11-18 11:17:08,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:17:08,404 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-11-18 11:17:08,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 11:17:08,404 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-11-18 11:17:08,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-18 11:17:08,405 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:17:08,405 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 11:17:08,405 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:17:08,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:17:08,406 INFO L82 PathProgramCache]: Analyzing trace with hash -32979570, now seen corresponding path program 1 times [2018-11-18 11:17:08,406 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:17:08,406 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/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 11:17:08,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:17:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:17:08,446 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:17:08,518 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 11:17:08,519 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:17:08,525 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:17:08,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 11:17:08,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 11:17:08,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 11:17:08,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:17:08,526 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2018-11-18 11:17:08,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:17:08,628 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2018-11-18 11:17:08,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 11:17:08,630 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-11-18 11:17:08,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:17:08,630 INFO L225 Difference]: With dead ends: 46 [2018-11-18 11:17:08,630 INFO L226 Difference]: Without dead ends: 33 [2018-11-18 11:17:08,631 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 11:17:08,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-18 11:17:08,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-18 11:17:08,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 11:17:08,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-18 11:17:08,634 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-11-18 11:17:08,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:17:08,634 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-18 11:17:08,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 11:17:08,634 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-18 11:17:08,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-18 11:17:08,634 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:17:08,635 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 11:17:08,635 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:17:08,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:17:08,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1394609961, now seen corresponding path program 1 times [2018-11-18 11:17:08,635 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:17:08,635 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/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 11:17:08,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:17:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:17:08,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:17:08,678 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 11:17:08,678 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:17:08,686 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:17:08,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:17:08,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:17:08,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:17:08,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:17:08,687 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-11-18 11:17:08,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:17:08,694 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-11-18 11:17:08,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:17:08,697 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-11-18 11:17:08,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:17:08,697 INFO L225 Difference]: With dead ends: 46 [2018-11-18 11:17:08,697 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 11:17:08,698 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 11:17:08,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 11:17:08,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-18 11:17:08,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 11:17:08,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-18 11:17:08,700 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-11-18 11:17:08,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:17:08,700 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-18 11:17:08,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:17:08,701 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-18 11:17:08,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-18 11:17:08,701 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:17:08,701 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 11:17:08,701 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:17:08,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:17:08,702 INFO L82 PathProgramCache]: Analyzing trace with hash 855813507, now seen corresponding path program 1 times [2018-11-18 11:17:08,702 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:17:08,702 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/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 11:17:08,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:17:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:17:08,744 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:17:08,783 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 11:17:08,783 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:17:08,790 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:17:08,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:17:08,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:17:08,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:17:08,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:17:08,791 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-11-18 11:17:08,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:17:08,801 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-11-18 11:17:08,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:17:08,802 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-11-18 11:17:08,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:17:08,802 INFO L225 Difference]: With dead ends: 46 [2018-11-18 11:17:08,802 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 11:17:08,803 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 11:17:08,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 11:17:08,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-18 11:17:08,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 11:17:08,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-18 11:17:08,807 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 36 [2018-11-18 11:17:08,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:17:08,807 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-18 11:17:08,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:17:08,807 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-18 11:17:08,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-18 11:17:08,808 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:17:08,808 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 11:17:08,808 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:17:08,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:17:08,809 INFO L82 PathProgramCache]: Analyzing trace with hash 562410500, now seen corresponding path program 1 times [2018-11-18 11:17:08,809 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:17:08,809 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/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 11:17:08,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:17:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:17:08,847 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:17:08,937 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 11:17:08,938 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:17:08,945 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:17:08,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-18 11:17:08,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 11:17:08,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 11:17:08,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-18 11:17:08,946 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 9 states. [2018-11-18 11:17:09,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:17:09,060 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-18 11:17:09,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 11:17:09,061 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-11-18 11:17:09,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:17:09,061 INFO L225 Difference]: With dead ends: 33 [2018-11-18 11:17:09,061 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 11:17:09,062 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 11:17:09,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 11:17:09,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 11:17:09,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 11:17:09,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 11:17:09,062 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2018-11-18 11:17:09,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:17:09,063 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 11:17:09,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 11:17:09,063 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 11:17:09,063 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 11:17:09,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 11:17:09,154 INFO L425 ceAbstractionStarter]: For program point isnan_floatFINAL(line 44) no Hoare annotation was computed. [2018-11-18 11:17:09,154 INFO L428 ceAbstractionStarter]: At program point isnan_floatENTRY(line 44) the Hoare annotation is: true [2018-11-18 11:17:09,154 INFO L425 ceAbstractionStarter]: For program point isnan_floatEXIT(line 44) no Hoare annotation was computed. [2018-11-18 11:17:09,154 INFO L428 ceAbstractionStarter]: At program point fmin_floatENTRY(lines 34 41) the Hoare annotation is: true [2018-11-18 11:17:09,154 INFO L425 ceAbstractionStarter]: For program point fmin_floatEXIT(lines 34 41) no Hoare annotation was computed. [2018-11-18 11:17:09,154 INFO L425 ceAbstractionStarter]: For program point fmin_floatFINAL(lines 34 41) no Hoare annotation was computed. [2018-11-18 11:17:09,154 INFO L425 ceAbstractionStarter]: For program point L40(line 40) no Hoare annotation was computed. [2018-11-18 11:17:09,154 INFO L425 ceAbstractionStarter]: For program point L40-2(line 40) no Hoare annotation was computed. [2018-11-18 11:17:09,155 INFO L421 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: (and (= fmin_float_~x |fmin_float_#in~x|) (= fmin_float_~y |fmin_float_#in~y|)) [2018-11-18 11:17:09,155 INFO L425 ceAbstractionStarter]: For program point L37-1(lines 37 38) no Hoare annotation was computed. [2018-11-18 11:17:09,155 INFO L421 ceAbstractionStarter]: At program point L35(line 35) the Hoare annotation is: (and (= fmin_float_~x |fmin_float_#in~x|) (= fmin_float_~y |fmin_float_#in~y|)) [2018-11-18 11:17:09,155 INFO L425 ceAbstractionStarter]: For program point L35-1(lines 35 36) no Hoare annotation was computed. [2018-11-18 11:17:09,155 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 11:17:09,155 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 11:17:09,155 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 11:17:09,155 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 11:17:09,155 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 11:17:09,156 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 11:17:09,156 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 11:17:09,156 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 46 64) the Hoare annotation is: true [2018-11-18 11:17:09,156 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 46 64) no Hoare annotation was computed. [2018-11-18 11:17:09,156 INFO L425 ceAbstractionStarter]: For program point L59(line 59) no Hoare annotation was computed. [2018-11-18 11:17:09,156 INFO L421 ceAbstractionStarter]: At program point L58(line 58) 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 11:17:09,156 INFO L425 ceAbstractionStarter]: For program point L58-1(lines 58 61) no Hoare annotation was computed. [2018-11-18 11:17:09,156 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 59) no Hoare annotation was computed. [2018-11-18 11:17:09,156 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 46 64) no Hoare annotation was computed. [2018-11-18 11:17:09,157 INFO L421 ceAbstractionStarter]: At program point L56(line 56) 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 11:17:09,157 INFO L425 ceAbstractionStarter]: For program point L56-1(line 56) no Hoare annotation was computed. [2018-11-18 11:17:09,157 INFO L425 ceAbstractionStarter]: For program point __fpclassify_floatFINAL(lines 11 32) no Hoare annotation was computed. [2018-11-18 11:17:09,157 INFO L425 ceAbstractionStarter]: For program point L25(lines 25 31) no Hoare annotation was computed. [2018-11-18 11:17:09,157 INFO L425 ceAbstractionStarter]: For program point L28(lines 28 31) no Hoare annotation was computed. [2018-11-18 11:17:09,157 INFO L425 ceAbstractionStarter]: For program point L22(lines 22 31) no Hoare annotation was computed. [2018-11-18 11:17:09,157 INFO L425 ceAbstractionStarter]: For program point L14-1(lines 14 18) no Hoare annotation was computed. [2018-11-18 11:17:09,157 INFO L428 ceAbstractionStarter]: At program point __fpclassify_floatENTRY(lines 11 32) the Hoare annotation is: true [2018-11-18 11:17:09,157 INFO L428 ceAbstractionStarter]: At program point L14-3(lines 14 18) the Hoare annotation is: true [2018-11-18 11:17:09,157 INFO L425 ceAbstractionStarter]: For program point L14-4(lines 11 32) no Hoare annotation was computed. [2018-11-18 11:17:09,157 INFO L425 ceAbstractionStarter]: For program point __fpclassify_floatEXIT(lines 11 32) no Hoare annotation was computed. [2018-11-18 11:17:09,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 11:17:09 BoogieIcfgContainer [2018-11-18 11:17:09,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 11:17:09,163 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 11:17:09,163 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 11:17:09,163 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 11:17:09,163 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:17:06" (3/4) ... [2018-11-18 11:17:09,167 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 11:17:09,173 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-11-18 11:17:09,173 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_float [2018-11-18 11:17:09,173 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 11:17:09,173 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 11:17:09,173 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-11-18 11:17:09,177 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-11-18 11:17:09,178 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-18 11:17:09,178 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 11:17:09,209 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e922ebfc-aed2-4337-96dd-44bddec7ac65/bin-2019/utaipan/witness.graphml [2018-11-18 11:17:09,209 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 11:17:09,210 INFO L168 Benchmark]: Toolchain (without parser) took 3162.27 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 950.8 MB in the beginning and 785.9 MB in the end (delta: 164.9 MB). Peak memory consumption was 285.5 MB. Max. memory is 11.5 GB. [2018-11-18 11:17:09,211 INFO L168 Benchmark]: CDTParser took 0.11 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 11:17:09,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 220.73 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 933.6 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. [2018-11-18 11:17:09,211 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.19 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:17:09,212 INFO L168 Benchmark]: Boogie Preprocessor took 24.66 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:17:09,212 INFO L168 Benchmark]: RCFGBuilder took 264.12 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -161.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2018-11-18 11:17:09,212 INFO L168 Benchmark]: TraceAbstraction took 2580.90 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 785.9 MB in the end (delta: 309.1 MB). Peak memory consumption was 309.1 MB. Max. memory is 11.5 GB. [2018-11-18 11:17:09,212 INFO L168 Benchmark]: Witness Printer took 46.12 ms. Allocated memory is still 1.1 GB. Free memory is still 785.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:17:09,214 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 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 220.73 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 933.6 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.19 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.66 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 264.12 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -161.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2580.90 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 785.9 MB in the end (delta: 309.1 MB). Peak memory consumption was 309.1 MB. Max. memory is 11.5 GB. * Witness Printer took 46.12 ms. Allocated memory is still 1.1 GB. Free memory is still 785.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 59]: 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: 14]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. SAFE Result, 2.5s OverallTime, 13 OverallIterations, 2 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 497 SDtfs, 31 SDslu, 1313 SDs, 0 SdLazy, 224 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, 0.8s 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, 0.7s InterpolantComputationTime, 402 NumberOfCodeBlocks, 402 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 389 ConstructedInterpolants, 3 QuantifiedInterpolants, 21389 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...