./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/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 1d363a30f559764c47bcb73d637f2d7196a1b97b .................................................................................................................................................................................................................................................. 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_f139f48a-848f-458c-9278-d8a1818e00f0/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/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 1d363a30f559764c47bcb73d637f2d7196a1b97b .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 06:04:22,116 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 06:04:22,117 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 06:04:22,123 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 06:04:22,123 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 06:04:22,124 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 06:04:22,124 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 06:04:22,125 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 06:04:22,126 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 06:04:22,126 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 06:04:22,126 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 06:04:22,127 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 06:04:22,127 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 06:04:22,127 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 06:04:22,128 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 06:04:22,128 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 06:04:22,129 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 06:04:22,130 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 06:04:22,130 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 06:04:22,131 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 06:04:22,132 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 06:04:22,132 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 06:04:22,133 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 06:04:22,133 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 06:04:22,133 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 06:04:22,134 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 06:04:22,134 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 06:04:22,135 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 06:04:22,135 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 06:04:22,136 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 06:04:22,136 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 06:04:22,136 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 06:04:22,136 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 06:04:22,136 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 06:04:22,137 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 06:04:22,137 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 06:04:22,137 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-02 06:04:22,144 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 06:04:22,145 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 06:04:22,145 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 06:04:22,145 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 06:04:22,145 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 06:04:22,145 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 06:04:22,145 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 06:04:22,146 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 06:04:22,146 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 06:04:22,146 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 06:04:22,146 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 06:04:22,146 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 06:04:22,146 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 06:04:22,146 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 06:04:22,146 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 06:04:22,147 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 06:04:22,147 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 06:04:22,147 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 06:04:22,147 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 06:04:22,147 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 06:04:22,147 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 06:04:22,147 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 06:04:22,147 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 06:04:22,147 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 06:04:22,147 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 06:04:22,147 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 06:04:22,148 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 06:04:22,148 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 06:04:22,148 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 06:04:22,148 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 06:04:22,148 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 06:04:22,148 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 06:04:22,148 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 06:04:22,148 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 06:04:22,148 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 06:04:22,148 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 06:04:22,149 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_f139f48a-848f-458c-9278-d8a1818e00f0/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 -> 1d363a30f559764c47bcb73d637f2d7196a1b97b [2018-12-02 06:04:22,165 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 06:04:22,172 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 06:04:22,174 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 06:04:22,174 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 06:04:22,175 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 06:04:22,175 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/bin-2019/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i [2018-12-02 06:04:22,209 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/bin-2019/utaipan/data/a4dc9625c/255d60f0409441fc82536c72b81ddb48/FLAG05bba2748 [2018-12-02 06:04:22,517 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 06:04:22,517 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i [2018-12-02 06:04:22,521 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/bin-2019/utaipan/data/a4dc9625c/255d60f0409441fc82536c72b81ddb48/FLAG05bba2748 [2018-12-02 06:04:22,529 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/bin-2019/utaipan/data/a4dc9625c/255d60f0409441fc82536c72b81ddb48 [2018-12-02 06:04:22,530 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 06:04:22,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 06:04:22,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 06:04:22,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 06:04:22,534 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 06:04:22,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:04:22" (1/1) ... [2018-12-02 06:04:22,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3033e242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:22, skipping insertion in model container [2018-12-02 06:04:22,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:04:22" (1/1) ... [2018-12-02 06:04:22,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 06:04:22,553 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 06:04:22,639 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 06:04:22,642 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 06:04:22,650 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 06:04:22,658 INFO L195 MainTranslator]: Completed translation [2018-12-02 06:04:22,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:22 WrapperNode [2018-12-02 06:04:22,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 06:04:22,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 06:04:22,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 06:04:22,659 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 06:04:22,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:22" (1/1) ... [2018-12-02 06:04:22,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:22" (1/1) ... [2018-12-02 06:04:22,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 06:04:22,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 06:04:22,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 06:04:22,675 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 06:04:22,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:22" (1/1) ... [2018-12-02 06:04:22,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:22" (1/1) ... [2018-12-02 06:04:22,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:22" (1/1) ... [2018-12-02 06:04:22,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:22" (1/1) ... [2018-12-02 06:04:22,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:22" (1/1) ... [2018-12-02 06:04:22,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:22" (1/1) ... [2018-12-02 06:04:22,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:22" (1/1) ... [2018-12-02 06:04:22,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 06:04:22,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 06:04:22,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 06:04:22,720 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 06:04:22,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/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 [2018-12-02 06:04:22,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 06:04:22,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 06:04:22,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 06:04:22,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 06:04:22,756 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 06:04:22,756 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 06:04:22,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-02 06:04:22,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-02 06:04:22,838 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 06:04:22,838 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-02 06:04:22,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:04:22 BoogieIcfgContainer [2018-12-02 06:04:22,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 06:04:22,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 06:04:22,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 06:04:22,841 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 06:04:22,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:04:22" (1/3) ... [2018-12-02 06:04:22,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c910191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:04:22, skipping insertion in model container [2018-12-02 06:04:22,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:22" (2/3) ... [2018-12-02 06:04:22,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c910191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:04:22, skipping insertion in model container [2018-12-02 06:04:22,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:04:22" (3/3) ... [2018-12-02 06:04:22,843 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_bad_false-unreach-call.i [2018-12-02 06:04:22,849 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 06:04:22,854 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 06:04:22,864 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 06:04:22,884 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 06:04:22,884 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 06:04:22,884 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 06:04:22,884 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 06:04:22,884 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 06:04:22,885 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 06:04:22,885 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 06:04:22,885 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 06:04:22,896 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-12-02 06:04:22,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 06:04:22,900 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:04:22,900 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:04:22,901 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:04:22,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:04:22,905 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2018-12-02 06:04:22,906 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 06:04:22,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:04:22,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:04:22,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:04:22,935 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 06:04:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 06:04:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 06:04:22,973 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 06:04:22,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:04:22 BoogieIcfgContainer [2018-12-02 06:04:22,988 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 06:04:22,988 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 06:04:22,988 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 06:04:22,989 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 06:04:22,989 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:04:22" (3/4) ... [2018-12-02 06:04:22,991 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 06:04:22,992 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 06:04:22,992 INFO L168 Benchmark]: Toolchain (without parser) took 461.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 949.7 MB in the beginning and 1.1 GB in the end (delta: -144.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 06:04:22,993 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 06:04:22,994 INFO L168 Benchmark]: CACSL2BoogieTranslator took 126.65 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 06:04:22,995 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.11 ms. Allocated memory is still 1.0 GB. Free memory is still 939.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 06:04:22,995 INFO L168 Benchmark]: Boogie Preprocessor took 44.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 939.0 MB in the beginning and 1.1 GB in the end (delta: -188.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2018-12-02 06:04:22,996 INFO L168 Benchmark]: RCFGBuilder took 119.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2018-12-02 06:04:22,996 INFO L168 Benchmark]: TraceAbstraction took 148.90 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: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 11.5 GB. [2018-12-02 06:04:22,997 INFO L168 Benchmark]: Witness Printer took 3.24 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: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-12-02 06:04:23,000 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 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 126.65 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.11 ms. Allocated memory is still 1.0 GB. Free memory is still 939.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 44.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 939.0 MB in the beginning and 1.1 GB in the end (delta: -188.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 119.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 148.90 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: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 11.5 GB. * Witness Printer took 3.24 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: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 2]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 10. Possible FailurePath: [L9] double x = 1.0; [L10] double x1 = x/1.6; VAL [x=1] [L12] COND FALSE !(x1 != x) VAL [x=1] [L18] CALL __VERIFIER_assert(x == 0) VAL [\old(cond)=0] [L2] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L2] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-02 06:04:24,303 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 06:04:24,304 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 06:04:24,311 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 06:04:24,311 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 06:04:24,311 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 06:04:24,312 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 06:04:24,313 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 06:04:24,313 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 06:04:24,314 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 06:04:24,314 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 06:04:24,314 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 06:04:24,315 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 06:04:24,315 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 06:04:24,316 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 06:04:24,316 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 06:04:24,317 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 06:04:24,318 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 06:04:24,318 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 06:04:24,319 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 06:04:24,320 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 06:04:24,320 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 06:04:24,321 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 06:04:24,322 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 06:04:24,322 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 06:04:24,322 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 06:04:24,323 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 06:04:24,323 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 06:04:24,324 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 06:04:24,324 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 06:04:24,324 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 06:04:24,325 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 06:04:24,325 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 06:04:24,325 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 06:04:24,325 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 06:04:24,326 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 06:04:24,326 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-02 06:04:24,333 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 06:04:24,333 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 06:04:24,334 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 06:04:24,334 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 06:04:24,334 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 06:04:24,334 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 06:04:24,334 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 06:04:24,334 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 06:04:24,334 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 06:04:24,334 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 06:04:24,335 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 06:04:24,335 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 06:04:24,335 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 06:04:24,335 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 06:04:24,335 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 06:04:24,335 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 06:04:24,335 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 06:04:24,336 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-02 06:04:24,336 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-02 06:04:24,336 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 06:04:24,336 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 06:04:24,336 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 06:04:24,336 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 06:04:24,336 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 06:04:24,336 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 06:04:24,336 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 06:04:24,336 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 06:04:24,336 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 06:04:24,337 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 06:04:24,337 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 06:04:24,337 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 06:04:24,337 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-02 06:04:24,337 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 06:04:24,337 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-02 06:04:24,337 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-02 06:04:24,337 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_f139f48a-848f-458c-9278-d8a1818e00f0/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 -> 1d363a30f559764c47bcb73d637f2d7196a1b97b [2018-12-02 06:04:24,356 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 06:04:24,366 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 06:04:24,368 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 06:04:24,370 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 06:04:24,370 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 06:04:24,370 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/bin-2019/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i [2018-12-02 06:04:24,405 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/bin-2019/utaipan/data/92a95775b/9373bed50bf34234b40e334840e11568/FLAG48b4d75c4 [2018-12-02 06:04:24,752 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 06:04:24,752 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i [2018-12-02 06:04:24,757 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/bin-2019/utaipan/data/92a95775b/9373bed50bf34234b40e334840e11568/FLAG48b4d75c4 [2018-12-02 06:04:25,141 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/bin-2019/utaipan/data/92a95775b/9373bed50bf34234b40e334840e11568 [2018-12-02 06:04:25,144 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 06:04:25,146 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 06:04:25,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 06:04:25,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 06:04:25,150 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 06:04:25,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:04:25" (1/1) ... [2018-12-02 06:04:25,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63407dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:25, skipping insertion in model container [2018-12-02 06:04:25,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:04:25" (1/1) ... [2018-12-02 06:04:25,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 06:04:25,170 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 06:04:25,253 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 06:04:25,257 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 06:04:25,265 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 06:04:25,273 INFO L195 MainTranslator]: Completed translation [2018-12-02 06:04:25,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:25 WrapperNode [2018-12-02 06:04:25,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 06:04:25,274 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 06:04:25,274 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 06:04:25,274 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 06:04:25,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:25" (1/1) ... [2018-12-02 06:04:25,283 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:25" (1/1) ... [2018-12-02 06:04:25,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 06:04:25,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 06:04:25,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 06:04:25,287 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 06:04:25,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:25" (1/1) ... [2018-12-02 06:04:25,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:25" (1/1) ... [2018-12-02 06:04:25,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:25" (1/1) ... [2018-12-02 06:04:25,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:25" (1/1) ... [2018-12-02 06:04:25,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:25" (1/1) ... [2018-12-02 06:04:25,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:25" (1/1) ... [2018-12-02 06:04:25,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:25" (1/1) ... [2018-12-02 06:04:25,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 06:04:25,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 06:04:25,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 06:04:25,301 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 06:04:25,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/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 [2018-12-02 06:04:25,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 06:04:25,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 06:04:25,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 06:04:25,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 06:04:25,360 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 06:04:25,360 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 06:04:25,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-02 06:04:25,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-02 06:04:26,157 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 06:04:26,157 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-02 06:04:26,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:04:26 BoogieIcfgContainer [2018-12-02 06:04:26,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 06:04:26,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 06:04:26,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 06:04:26,160 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 06:04:26,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:04:25" (1/3) ... [2018-12-02 06:04:26,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48471614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:04:26, skipping insertion in model container [2018-12-02 06:04:26,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:25" (2/3) ... [2018-12-02 06:04:26,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48471614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:04:26, skipping insertion in model container [2018-12-02 06:04:26,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:04:26" (3/3) ... [2018-12-02 06:04:26,162 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_bad_false-unreach-call.i [2018-12-02 06:04:26,167 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 06:04:26,171 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 06:04:26,179 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 06:04:26,196 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 06:04:26,196 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 06:04:26,196 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 06:04:26,196 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 06:04:26,197 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 06:04:26,197 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 06:04:26,197 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 06:04:26,197 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 06:04:26,197 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 06:04:26,206 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-12-02 06:04:26,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 06:04:26,210 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:04:26,210 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:04:26,211 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:04:26,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:04:26,214 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2018-12-02 06:04:26,217 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 06:04:26,217 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/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 [2018-12-02 06:04:26,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:04:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:04:26,447 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:04:27,989 WARN L180 SmtUtils]: Spent 1.53 s on a formula simplification that was a NOOP. DAG size: 11 [2018-12-02 06:04:27,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 06:04:27,996 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 06:04:28,012 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:04:28,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 06:04:28,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 06:04:28,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 06:04:28,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 06:04:28,023 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2018-12-02 06:04:29,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:04:29,493 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2018-12-02 06:04:30,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 06:04:30,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-02 06:04:30,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:04:30,101 INFO L225 Difference]: With dead ends: 31 [2018-12-02 06:04:30,102 INFO L226 Difference]: Without dead ends: 12 [2018-12-02 06:04:30,104 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 06:04:30,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-02 06:04:30,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-02 06:04:30,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-02 06:04:30,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-12-02 06:04:30,124 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-12-02 06:04:30,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:04:30,125 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-12-02 06:04:30,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 06:04:30,125 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-12-02 06:04:30,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-02 06:04:30,125 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:04:30,125 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:04:30,126 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:04:30,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:04:30,126 INFO L82 PathProgramCache]: Analyzing trace with hash -429188558, now seen corresponding path program 1 times [2018-12-02 06:04:30,126 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 06:04:30,126 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/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 [2018-12-02 06:04:30,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:04:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:04:30,555 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:04:34,861 WARN L180 SmtUtils]: Spent 2.89 s on a formula simplification that was a NOOP. DAG size: 12 [2018-12-02 06:04:34,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 06:04:34,864 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 06:04:47,106 WARN L180 SmtUtils]: Spent 2.73 s on a formula simplification that was a NOOP. DAG size: 7 [2018-12-02 06:04:47,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 06:04:47,131 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 06:04:47,131 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 06:04:47,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:04:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:04:55,909 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:04:55,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 06:04:55,913 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 06:05:01,811 WARN L854 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div roundNearestTiesToEven c_main_~x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) c_main_~x1~0)) (fp.eq c_main_~x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) is different from true [2018-12-02 06:05:01,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2018-12-02 06:05:01,900 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-02 06:05:01,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 7] total 11 [2018-12-02 06:05:01,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-02 06:05:01,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-02 06:05:01,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=67, Unknown=2, NotChecked=16, Total=110 [2018-12-02 06:05:01,901 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-12-02 06:05:05,159 WARN L180 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 19 DAG size of output: 12 [2018-12-02 06:05:19,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:05:19,210 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2018-12-02 06:05:19,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 06:05:19,211 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-12-02 06:05:19,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:05:19,211 INFO L225 Difference]: With dead ends: 19 [2018-12-02 06:05:19,211 INFO L226 Difference]: Without dead ends: 14 [2018-12-02 06:05:19,212 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=31, Invalid=81, Unknown=2, NotChecked=18, Total=132 [2018-12-02 06:05:19,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-12-02 06:05:19,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-12-02 06:05:19,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-02 06:05:19,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-12-02 06:05:19,215 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-12-02 06:05:19,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:05:19,215 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-12-02 06:05:19,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-02 06:05:19,215 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-12-02 06:05:19,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-02 06:05:19,215 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:05:19,216 INFO L402 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:05:19,216 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:05:19,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:05:19,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1003863954, now seen corresponding path program 2 times [2018-12-02 06:05:19,216 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 06:05:19,216 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/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 [2018-12-02 06:05:19,219 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-02 06:05:20,013 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 06:05:20,013 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 06:05:20,083 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:05:27,739 WARN L180 SmtUtils]: Spent 1.92 s on a formula simplification that was a NOOP. DAG size: 14 [2018-12-02 06:05:27,742 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 06:05:27,742 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 06:05:36,618 WARN L832 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div roundNearestTiesToEven c_main_~x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) c_main_~x1~0)) (fp.eq c_main_~x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) is different from false [2018-12-02 06:05:39,631 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))) is different from false [2018-12-02 06:05:42,046 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))) is different from true [2018-12-02 06:05:44,649 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))) is different from false [2018-12-02 06:05:47,249 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))) is different from true [2018-12-02 06:05:47,260 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2018-12-02 06:05:47,279 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 06:05:47,279 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 06:05:47,286 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 06:06:01,294 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 06:06:01,294 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [2018-12-02 06:06:03,550 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 06:06:03,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 13 [2018-12-02 06:06:03,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-02 06:06:03,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-02 06:06:03,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=71, Unknown=6, NotChecked=54, Total=156 [2018-12-02 06:06:03,551 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-12-02 06:06:06,187 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (= c_main_~x1~0 (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0)) (let ((.cse1 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse0) .cse0))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1)) (fp.eq .cse1 .cse2))) (or (fp.eq c_main_~x~0 .cse2) (not (fp.eq c_main_~x1~0 c_main_~x~0))))) is different from true [2018-12-02 06:06:08,606 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (= c_main_~x1~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) .cse0)) (let ((.cse1 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse0))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1)) (fp.eq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))))) is different from true [2018-12-02 06:06:22,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:06:22,300 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2018-12-02 06:06:22,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-02 06:06:22,300 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-12-02 06:06:22,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:06:22,301 INFO L225 Difference]: With dead ends: 24 [2018-12-02 06:06:22,301 INFO L226 Difference]: Without dead ends: 16 [2018-12-02 06:06:22,301 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.2s TimeCoverageRelationStatistics Valid=33, Invalid=89, Unknown=8, NotChecked=110, Total=240 [2018-12-02 06:06:22,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-12-02 06:06:22,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-12-02 06:06:22,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-02 06:06:22,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-12-02 06:06:22,304 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-12-02 06:06:22,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:06:22,304 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-12-02 06:06:22,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-02 06:06:22,305 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-12-02 06:06:22,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-02 06:06:22,305 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:06:22,305 INFO L402 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:06:22,305 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:06:22,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:06:22,305 INFO L82 PathProgramCache]: Analyzing trace with hash -517174030, now seen corresponding path program 3 times [2018-12-02 06:06:22,306 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 06:06:22,306 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/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 [2018-12-02 06:06:22,308 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-12-02 06:06:23,727 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-02 06:06:23,728 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 06:06:23,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:06:30,276 WARN L180 SmtUtils]: Spent 4.61 s on a formula simplification that was a NOOP. DAG size: 16 [2018-12-02 06:06:30,279 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 06:06:30,279 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 06:06:33,831 WARN L854 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div roundNearestTiesToEven c_main_~x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) c_main_~x1~0)) (fp.eq c_main_~x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) is different from true [2018-12-02 06:06:36,263 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))) is different from false [2018-12-02 06:06:38,674 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))) is different from true [2018-12-02 06:06:41,275 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))) is different from false [2018-12-02 06:06:43,891 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))) is different from true [2018-12-02 06:06:46,676 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2018-12-02 06:06:49,492 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2018-12-02 06:06:52,490 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))) is different from false [2018-12-02 06:06:55,460 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))) is different from true [2018-12-02 06:06:55,476 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2018-12-02 06:06:55,500 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 06:06:55,501 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 06:06:55,508 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 06:07:30,775 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-02 06:07:30,775 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (8)] Forcibly destroying the process [2018-12-02 06:07:33,060 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 06:07:33,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 17 [2018-12-02 06:07:33,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-12-02 06:07:33,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-12-02 06:07:33,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=110, Unknown=9, NotChecked=120, Total=272 [2018-12-02 06:07:33,062 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 17 states. [2018-12-02 06:07:36,055 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (= c_main_~x1~0 (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0)) (let ((.cse1 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse0) .cse0) .cse0) .cse0))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1)) (fp.eq .cse1 .cse2))) (or (fp.eq c_main_~x~0 .cse2) (not (fp.eq c_main_~x1~0 c_main_~x~0))))) is different from true [2018-12-02 06:07:38,887 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (= c_main_~x1~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) .cse0)) (let ((.cse1 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse0) .cse0) .cse0))) (or (fp.eq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1)))))) is different from true [2018-12-02 06:07:41,513 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (= c_main_~x1~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) .cse0) .cse0)) (let ((.cse1 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse0) .cse0))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1)) (fp.eq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))))) is different from true [2018-12-02 06:07:48,522 WARN L180 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 25 DAG size of output: 16 [2018-12-02 06:07:53,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:07:53,329 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2018-12-02 06:07:53,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-02 06:07:53,330 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 15 [2018-12-02 06:07:53,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:07:53,330 INFO L225 Difference]: With dead ends: 26 [2018-12-02 06:07:53,330 INFO L226 Difference]: Without dead ends: 18 [2018-12-02 06:07:53,331 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 45.6s TimeCoverageRelationStatistics Valid=47, Invalid=155, Unknown=12, NotChecked=248, Total=462 [2018-12-02 06:07:53,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-12-02 06:07:53,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-12-02 06:07:53,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-02 06:07:53,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-12-02 06:07:53,334 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-12-02 06:07:53,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:07:53,334 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-12-02 06:07:53,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-12-02 06:07:53,334 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-12-02 06:07:53,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-02 06:07:53,334 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:07:53,334 INFO L402 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:07:53,335 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:07:53,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:07:53,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1945796014, now seen corresponding path program 4 times [2018-12-02 06:07:53,335 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 06:07:53,335 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/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 [2018-12-02 06:07:53,338 INFO L101 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-02 06:07:54,964 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-02 06:07:54,964 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 06:07:55,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:08:11,967 WARN L180 SmtUtils]: Spent 3.65 s on a formula simplification that was a NOOP. DAG size: 18 [2018-12-02 06:08:11,971 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 06:08:11,971 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 06:08:15,784 WARN L832 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div roundNearestTiesToEven c_main_~x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) c_main_~x1~0)) is different from false [2018-12-02 06:08:18,748 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-12-02 06:08:21,165 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-12-02 06:08:23,786 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-12-02 06:08:26,412 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-12-02 06:08:29,251 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-12-02 06:08:32,083 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-12-02 06:08:35,105 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-12-02 06:08:38,134 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-12-02 06:08:41,364 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-12-02 06:08:44,604 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-12-02 06:08:48,010 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-12-02 06:08:51,467 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-12-02 06:08:51,483 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 28 not checked. [2018-12-02 06:08:51,514 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 06:08:51,514 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/bin-2019/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 06:08:51,521 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-02 06:09:15,542 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-02 06:09:15,542 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (10)] Forcibly destroying the process [2018-12-02 06:09:17,250 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 06:09:17,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2018-12-02 06:09:17,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-02 06:09:17,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-02 06:09:17,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=90, Unknown=14, NotChecked=168, Total=306 [2018-12-02 06:09:17,251 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 18 states. [2018-12-02 06:09:20,747 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (= c_main_~x1~0 (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0)) (not (let ((.cse1 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse0) .cse0) .cse0) .cse0) .cse0) .cse0))) (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1))) (not (fp.eq c_main_~x1~0 c_main_~x~0)))) is different from true [2018-12-02 06:09:23,987 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (not (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))) (= c_main_~x1~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) .cse1)))) is different from true [2018-12-02 06:09:27,057 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (= c_main_~x1~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) .cse0) .cse0)) (not (let ((.cse1 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse0) .cse0) .cse0) .cse0))) (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1))))) is different from true [2018-12-02 06:09:29,937 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (= c_main_~x1~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) .cse0) .cse0) .cse0)) (not (let ((.cse1 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse0) .cse0) .cse0))) (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1))))) is different from true [2018-12-02 06:09:32,575 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (not (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))) (= c_main_~x1~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) .cse1) .cse1) .cse1) .cse1)))) is different from true [2018-12-02 06:09:35,008 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (not (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))) (= c_main_~x1~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) .cse1) .cse1) .cse1) .cse1) .cse1)))) is different from true [2018-12-02 06:09:42,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:09:42,973 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-12-02 06:09:42,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-02 06:09:42,974 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 17 [2018-12-02 06:09:42,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:09:42,974 INFO L225 Difference]: With dead ends: 25 [2018-12-02 06:09:42,974 INFO L226 Difference]: Without dead ends: 20 [2018-12-02 06:09:42,975 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 74.9s TimeCoverageRelationStatistics Valid=46, Invalid=96, Unknown=20, NotChecked=390, Total=552 [2018-12-02 06:09:42,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-12-02 06:09:42,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-12-02 06:09:42,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-12-02 06:09:42,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-12-02 06:09:42,979 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2018-12-02 06:09:42,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:09:42,979 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-12-02 06:09:42,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-02 06:09:42,979 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-12-02 06:09:42,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 06:09:42,979 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:09:42,980 INFO L402 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:09:42,980 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:09:42,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:09:42,980 INFO L82 PathProgramCache]: Analyzing trace with hash -461987918, now seen corresponding path program 5 times [2018-12-02 06:09:42,980 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 06:09:42,981 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f139f48a-848f-458c-9278-d8a1818e00f0/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 [2018-12-02 06:09:42,984 INFO L101 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2018-12-02 06:09:46,506 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-12-02 06:09:46,506 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 06:09:46,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:09:52,878 WARN L180 SmtUtils]: Spent 4.40 s on a formula simplification that was a NOOP. DAG size: 20 [2018-12-02 06:09:52,882 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 06:09:52,882 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 06:10:18,737 WARN L180 SmtUtils]: Spent 1.90 s on a formula simplification that was a NOOP. DAG size: 7 [2018-12-02 06:10:21,170 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-12-02 06:10:23,609 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-12-02 06:10:26,240 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-12-02 06:10:31,632 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-12-02 06:10:34,484 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-12-02 06:10:37,557 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-12-02 06:10:40,623 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-12-02 06:10:41,862 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-12-02 06:10:42,063 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2018-12-02 06:10:42,064 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:141) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:823) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:767) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:339) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 40 more [2018-12-02 06:10:42,068 INFO L168 Benchmark]: Toolchain (without parser) took 376923.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 943.4 MB in the beginning and 852.5 MB in the end (delta: 90.9 MB). Peak memory consumption was 214.6 MB. Max. memory is 11.5 GB. [2018-12-02 06:10:42,069 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 06:10:42,069 INFO L168 Benchmark]: CACSL2BoogieTranslator took 126.96 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 06:10:42,070 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.44 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 06:10:42,070 INFO L168 Benchmark]: Boogie Preprocessor took 14.02 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-02 06:10:42,071 INFO L168 Benchmark]: RCFGBuilder took 856.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -160.9 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2018-12-02 06:10:42,072 INFO L168 Benchmark]: TraceAbstraction took 375909.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 852.5 MB in the end (delta: 235.7 MB). Peak memory consumption was 235.7 MB. Max. memory is 11.5 GB. [2018-12-02 06:10:42,075 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 126.96 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.44 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.02 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 856.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -160.9 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 375909.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 852.5 MB in the end (delta: 235.7 MB). Peak memory consumption was 235.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...