./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_poly_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_poly_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8a4836c40967b3aafd0bbb2ea7228f657b02305b .............................................................................................................................................................................................................................. 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_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_poly_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8a4836c40967b3aafd0bbb2ea7228f657b02305b ............................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 11:14:13,067 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 11:14:13,068 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 11:14:13,076 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 11:14:13,076 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 11:14:13,077 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 11:14:13,077 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 11:14:13,078 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 11:14:13,079 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 11:14:13,080 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 11:14:13,081 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 11:14:13,081 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 11:14:13,082 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 11:14:13,082 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 11:14:13,084 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 11:14:13,084 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 11:14:13,085 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 11:14:13,087 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 11:14:13,088 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 11:14:13,089 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 11:14:13,090 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 11:14:13,091 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 11:14:13,093 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 11:14:13,093 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 11:14:13,093 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 11:14:13,094 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 11:14:13,095 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 11:14:13,095 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 11:14:13,096 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 11:14:13,097 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 11:14:13,097 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 11:14:13,098 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 11:14:13,098 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 11:14:13,098 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 11:14:13,098 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 11:14:13,099 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 11:14:13,099 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 11:14:13,109 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 11:14:13,109 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 11:14:13,109 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 11:14:13,110 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 11:14:13,110 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 11:14:13,110 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 11:14:13,110 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 11:14:13,111 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 11:14:13,111 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 11:14:13,111 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 11:14:13,111 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 11:14:13,111 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 11:14:13,111 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 11:14:13,111 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 11:14:13,111 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 11:14:13,111 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 11:14:13,111 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 11:14:13,111 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 11:14:13,112 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 11:14:13,112 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 11:14:13,112 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 11:14:13,112 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 11:14:13,112 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 11:14:13,112 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:14:13,112 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 11:14:13,112 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 11:14:13,112 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 11:14:13,113 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 11:14:13,113 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 11:14:13,113 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 11:14:13,113 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_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a4836c40967b3aafd0bbb2ea7228f657b02305b [2018-11-18 11:14:13,137 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 11:14:13,145 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 11:14:13,147 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 11:14:13,148 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 11:14:13,148 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 11:14:13,148 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/sqrt_poly_true-unreach-call_true-termination.c [2018-11-18 11:14:13,193 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer/data/9bd80a88d/a9933a923ce344a890fcdefeb39857e4/FLAGf57fe386b [2018-11-18 11:14:13,597 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 11:14:13,597 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/sv-benchmarks/c/float-benchs/sqrt_poly_true-unreach-call_true-termination.c [2018-11-18 11:14:13,601 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer/data/9bd80a88d/a9933a923ce344a890fcdefeb39857e4/FLAGf57fe386b [2018-11-18 11:14:13,610 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer/data/9bd80a88d/a9933a923ce344a890fcdefeb39857e4 [2018-11-18 11:14:13,612 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 11:14:13,613 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 11:14:13,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 11:14:13,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 11:14:13,617 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 11:14:13,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:14:13" (1/1) ... [2018-11-18 11:14:13,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@671094a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:14:13, skipping insertion in model container [2018-11-18 11:14:13,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:14:13" (1/1) ... [2018-11-18 11:14:13,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 11:14:13,638 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 11:14:13,748 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:14:13,752 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 11:14:13,762 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:14:13,772 INFO L195 MainTranslator]: Completed translation [2018-11-18 11:14:13,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:14:13 WrapperNode [2018-11-18 11:14:13,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 11:14:13,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 11:14:13,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 11:14:13,773 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 11:14:13,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:14:13" (1/1) ... [2018-11-18 11:14:13,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:14:13" (1/1) ... [2018-11-18 11:14:13,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:14:13" (1/1) ... [2018-11-18 11:14:13,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:14:13" (1/1) ... [2018-11-18 11:14:13,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:14:13" (1/1) ... [2018-11-18 11:14:13,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:14:13" (1/1) ... [2018-11-18 11:14:13,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:14:13" (1/1) ... [2018-11-18 11:14:13,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 11:14:13,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 11:14:13,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 11:14:13,799 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 11:14:13,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:14:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:14:13,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 11:14:13,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 11:14:13,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 11:14:13,886 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 11:14:13,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 11:14:13,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-11-18 11:14:13,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 11:14:13,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 11:14:13,886 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 11:14:13,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 11:14:13,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 11:14:13,998 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 11:14:13,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:14:13 BoogieIcfgContainer [2018-11-18 11:14:13,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 11:14:13,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 11:14:14,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 11:14:14,001 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 11:14:14,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:14:13" (1/3) ... [2018-11-18 11:14:14,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30084600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:14:14, skipping insertion in model container [2018-11-18 11:14:14,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:14:13" (2/3) ... [2018-11-18 11:14:14,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30084600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:14:14, skipping insertion in model container [2018-11-18 11:14:14,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:14:13" (3/3) ... [2018-11-18 11:14:14,005 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_poly_true-unreach-call_true-termination.c [2018-11-18 11:14:14,011 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 11:14:14,016 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 11:14:14,025 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 11:14:14,045 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 11:14:14,046 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 11:14:14,046 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 11:14:14,046 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 11:14:14,046 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 11:14:14,046 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 11:14:14,046 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 11:14:14,046 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 11:14:14,047 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 11:14:14,059 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-18 11:14:14,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 11:14:14,063 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:14:14,064 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:14:14,065 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:14:14,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:14:14,069 INFO L82 PathProgramCache]: Analyzing trace with hash -2111486095, now seen corresponding path program 1 times [2018-11-18 11:14:14,071 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:14:14,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:14:14,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:14:14,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:14:14,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:14:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:14:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:14:14,148 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 11:14:14,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 11:14:14 BoogieIcfgContainer [2018-11-18 11:14:14,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 11:14:14,163 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 11:14:14,163 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 11:14:14,163 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 11:14:14,163 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:14:13" (3/4) ... [2018-11-18 11:14:14,166 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 11:14:14,166 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 11:14:14,167 INFO L168 Benchmark]: Toolchain (without parser) took 553.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 962.5 MB in the beginning and 1.1 GB in the end (delta: -146.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:14:14,168 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:14:14,168 INFO L168 Benchmark]: CACSL2BoogieTranslator took 158.44 ms. Allocated memory is still 1.0 GB. Free memory was 962.5 MB in the beginning and 951.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:14:14,169 INFO L168 Benchmark]: Boogie Preprocessor took 25.39 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 946.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 11:14:14,169 INFO L168 Benchmark]: RCFGBuilder took 200.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 946.4 MB in the beginning and 1.1 GB in the end (delta: -179.0 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-18 11:14:14,170 INFO L168 Benchmark]: TraceAbstraction took 163.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 11:14:14,170 INFO L168 Benchmark]: Witness Printer took 3.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:14:14,172 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 158.44 ms. Allocated memory is still 1.0 GB. Free memory was 962.5 MB in the beginning and 951.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.39 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 946.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 200.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 946.4 MB in the beginning and 1.1 GB in the end (delta: -179.0 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 163.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 11]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 22, overapproximation of someBinaryArithmeticDOUBLEoperation at line 22. Possible FailurePath: [L13] double sqrt2 = 1.414213538169860839843750; VAL [\old(sqrt2)=3, sqrt2=11863283/8388608] [L17] double S, I; [L19] I = __VERIFIER_nondet_double() [L22] COND TRUE I >= 2. [L22] S = sqrt2 * (1.+(I/2.- 1.)*(.5-0.125*(I/2.-1.))) VAL [I=2, sqrt2=11863283/8388608] [L25] CALL __VERIFIER_assert(S >= 1. && S <= 2.) VAL [\old(cond)=0, sqrt2=11863283/8388608] [L11] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, sqrt2=11863283/8388608] [L11] __VERIFIER_error() VAL [\old(cond)=0, cond=0, sqrt2=11863283/8388608] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 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=19occurred 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, 11 NumberOfCodeBlocks, 11 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 0.1.23-5842f4b [2018-11-18 11:14:15,673 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 11:14:15,674 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 11:14:15,683 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 11:14:15,683 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 11:14:15,684 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 11:14:15,685 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 11:14:15,686 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 11:14:15,687 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 11:14:15,688 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 11:14:15,688 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 11:14:15,688 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 11:14:15,689 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 11:14:15,690 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 11:14:15,690 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 11:14:15,691 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 11:14:15,692 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 11:14:15,693 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 11:14:15,694 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 11:14:15,695 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 11:14:15,696 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 11:14:15,697 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 11:14:15,699 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 11:14:15,699 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 11:14:15,699 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 11:14:15,700 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 11:14:15,700 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 11:14:15,701 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 11:14:15,702 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 11:14:15,703 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 11:14:15,703 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 11:14:15,703 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 11:14:15,704 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 11:14:15,704 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 11:14:15,705 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 11:14:15,705 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 11:14:15,705 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-18 11:14:15,716 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 11:14:15,716 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 11:14:15,716 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 11:14:15,717 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 11:14:15,717 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 11:14:15,717 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 11:14:15,717 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 11:14:15,718 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 11:14:15,718 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 11:14:15,718 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 11:14:15,718 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 11:14:15,718 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 11:14:15,718 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 11:14:15,718 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 11:14:15,718 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 11:14:15,719 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 11:14:15,719 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 11:14:15,719 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 11:14:15,719 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 11:14:15,719 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 11:14:15,719 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 11:14:15,719 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 11:14:15,720 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 11:14:15,720 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 11:14:15,720 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:14:15,720 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 11:14:15,720 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 11:14:15,720 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 11:14:15,720 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-18 11:14:15,721 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 11:14:15,721 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 11:14:15,721 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 11:14:15,721 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_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a4836c40967b3aafd0bbb2ea7228f657b02305b [2018-11-18 11:14:15,750 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 11:14:15,760 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 11:14:15,763 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 11:14:15,764 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 11:14:15,764 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 11:14:15,765 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/sqrt_poly_true-unreach-call_true-termination.c [2018-11-18 11:14:15,807 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer/data/9c31d1ee3/e6bf21b5d27945718c43a90423ce6c4c/FLAGc39a2bb76 [2018-11-18 11:14:16,210 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 11:14:16,210 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/sv-benchmarks/c/float-benchs/sqrt_poly_true-unreach-call_true-termination.c [2018-11-18 11:14:16,214 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer/data/9c31d1ee3/e6bf21b5d27945718c43a90423ce6c4c/FLAGc39a2bb76 [2018-11-18 11:14:16,223 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer/data/9c31d1ee3/e6bf21b5d27945718c43a90423ce6c4c [2018-11-18 11:14:16,226 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 11:14:16,227 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 11:14:16,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 11:14:16,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 11:14:16,230 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 11:14:16,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:14:16" (1/1) ... [2018-11-18 11:14:16,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3525bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:14:16, skipping insertion in model container [2018-11-18 11:14:16,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:14:16" (1/1) ... [2018-11-18 11:14:16,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 11:14:16,254 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 11:14:16,368 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:14:16,373 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 11:14:16,387 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:14:16,398 INFO L195 MainTranslator]: Completed translation [2018-11-18 11:14:16,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:14:16 WrapperNode [2018-11-18 11:14:16,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 11:14:16,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 11:14:16,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 11:14:16,399 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 11:14:16,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:14:16" (1/1) ... [2018-11-18 11:14:16,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:14:16" (1/1) ... [2018-11-18 11:14:16,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:14:16" (1/1) ... [2018-11-18 11:14:16,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:14:16" (1/1) ... [2018-11-18 11:14:16,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:14:16" (1/1) ... [2018-11-18 11:14:16,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:14:16" (1/1) ... [2018-11-18 11:14:16,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:14:16" (1/1) ... [2018-11-18 11:14:16,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 11:14:16,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 11:14:16,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 11:14:16,422 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 11:14:16,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:14:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:14:16,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 11:14:16,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 11:14:16,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 11:14:16,501 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 11:14:16,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 11:14:16,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-11-18 11:14:16,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 11:14:16,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 11:14:16,501 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 11:14:16,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 11:14:16,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 11:14:20,786 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 11:14:20,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:14:20 BoogieIcfgContainer [2018-11-18 11:14:20,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 11:14:20,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 11:14:20,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 11:14:20,789 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 11:14:20,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:14:16" (1/3) ... [2018-11-18 11:14:20,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14ebd0d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:14:20, skipping insertion in model container [2018-11-18 11:14:20,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:14:16" (2/3) ... [2018-11-18 11:14:20,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14ebd0d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:14:20, skipping insertion in model container [2018-11-18 11:14:20,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:14:20" (3/3) ... [2018-11-18 11:14:20,792 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_poly_true-unreach-call_true-termination.c [2018-11-18 11:14:20,798 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 11:14:20,803 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 11:14:20,816 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 11:14:20,838 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 11:14:20,838 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 11:14:20,839 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 11:14:20,839 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 11:14:20,839 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 11:14:20,843 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 11:14:20,843 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 11:14:20,844 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 11:14:20,844 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 11:14:20,859 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-18 11:14:20,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 11:14:20,864 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:14:20,864 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:14:20,866 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:14:20,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:14:20,869 INFO L82 PathProgramCache]: Analyzing trace with hash -2111486095, now seen corresponding path program 1 times [2018-11-18 11:14:20,872 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:14:20,873 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-18 11:14:20,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:14:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:14:24,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:14:26,547 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~I~0 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (= (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 11863283.0 8388608.0)) (fp.add roundNearestTiesToEven .cse0 (let ((.cse1 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven main_~I~0 .cse2) .cse0))) (fp.mul roundNearestTiesToEven .cse1 (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0)) .cse1)))))) c_main_~S~0) (fp.geq main_~I~0 .cse2) (fp.geq main_~I~0 .cse0) (fp.leq main_~I~0 ((_ to_fp 11 53) roundNearestTiesToEven 3.0))))) is different from false [2018-11-18 11:14:28,627 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~I~0 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (= (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 11863283.0 8388608.0)) (fp.add roundNearestTiesToEven .cse0 (let ((.cse1 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven main_~I~0 .cse2) .cse0))) (fp.mul roundNearestTiesToEven .cse1 (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0)) .cse1)))))) c_main_~S~0) (fp.geq main_~I~0 .cse2) (fp.geq main_~I~0 .cse0) (fp.leq main_~I~0 ((_ to_fp 11 53) roundNearestTiesToEven 3.0))))) is different from true [2018-11-18 11:14:45,531 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse3 (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) (or (and (exists ((v_prenex_1 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (and (fp.geq v_prenex_1 .cse0) (fp.geq v_prenex_1 .cse1) (not (fp.leq (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 11863283.0 8388608.0)) (fp.add roundNearestTiesToEven .cse0 (let ((.cse2 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven v_prenex_1 .cse1) .cse0))) (fp.mul roundNearestTiesToEven .cse2 (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0)) .cse2)))))) .cse1)) (fp.leq v_prenex_1 ((_ to_fp 11 53) roundNearestTiesToEven 3.0))))) .cse3) (and (exists ((main_~I~0 (_ FloatingPoint 11 53))) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (.cse5 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse6 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 11863283.0 8388608.0)) (fp.add roundNearestTiesToEven .cse5 (let ((.cse7 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven main_~I~0 .cse4) .cse5))) (fp.mul roundNearestTiesToEven .cse7 (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0)) .cse7)))))))) (and (fp.geq main_~I~0 .cse4) (fp.geq main_~I~0 .cse5) (fp.leq .cse6 .cse4) (fp.geq .cse6 .cse5) (fp.leq main_~I~0 ((_ to_fp 11 53) roundNearestTiesToEven 3.0)))))) (= (bvadd |c___VERIFIER_assert_#in~cond| (_ bv4294967295 32)) (_ bv0 32))) (and (exists ((v_prenex_3 (_ FloatingPoint 11 53))) (let ((.cse8 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (.cse10 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (and (fp.geq v_prenex_3 .cse8) (fp.leq v_prenex_3 ((_ to_fp 11 53) roundNearestTiesToEven 3.0)) (not (fp.geq (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 11863283.0 8388608.0)) (fp.add roundNearestTiesToEven .cse8 (let ((.cse9 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven v_prenex_3 .cse10) .cse8))) (fp.mul roundNearestTiesToEven .cse9 (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0)) .cse9)))))) .cse8)) (fp.geq v_prenex_3 .cse10)))) .cse3))) is different from false [2018-11-18 11:15:00,370 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 (= (_ bv0 32) c___VERIFIER_assert_~cond))) (or (and .cse0 (exists ((v_prenex_3 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (and (fp.geq v_prenex_3 .cse1) (fp.leq v_prenex_3 ((_ to_fp 11 53) roundNearestTiesToEven 3.0)) (not (fp.geq (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 11863283.0 8388608.0)) (fp.add roundNearestTiesToEven .cse1 (let ((.cse2 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven v_prenex_3 .cse3) .cse1))) (fp.mul roundNearestTiesToEven .cse2 (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0)) .cse2)))))) .cse1)) (fp.geq v_prenex_3 .cse3))))) (and .cse0 (exists ((v_prenex_1 (_ FloatingPoint 11 53))) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (.cse5 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (and (fp.geq v_prenex_1 .cse4) (fp.geq v_prenex_1 .cse5) (not (fp.leq (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 11863283.0 8388608.0)) (fp.add roundNearestTiesToEven .cse4 (let ((.cse6 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven v_prenex_1 .cse5) .cse4))) (fp.mul roundNearestTiesToEven .cse6 (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0)) .cse6)))))) .cse5)) (fp.leq v_prenex_1 ((_ to_fp 11 53) roundNearestTiesToEven 3.0)))))) (and (exists ((main_~I~0 (_ FloatingPoint 11 53))) (let ((.cse7 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (.cse8 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse9 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 11863283.0 8388608.0)) (fp.add roundNearestTiesToEven .cse8 (let ((.cse10 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven main_~I~0 .cse7) .cse8))) (fp.mul roundNearestTiesToEven .cse10 (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0)) .cse10)))))))) (and (fp.geq main_~I~0 .cse7) (fp.geq main_~I~0 .cse8) (fp.leq .cse9 .cse7) (fp.geq .cse9 .cse8) (fp.leq main_~I~0 ((_ to_fp 11 53) roundNearestTiesToEven 3.0)))))) (= (bvadd c___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))))) is different from false [2018-11-18 11:15:10,962 WARN L832 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_1 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (and (fp.geq v_prenex_1 .cse0) (fp.geq v_prenex_1 .cse1) (not (fp.leq (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 11863283.0 8388608.0)) (fp.add roundNearestTiesToEven .cse0 (let ((.cse2 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven v_prenex_1 .cse1) .cse0))) (fp.mul roundNearestTiesToEven .cse2 (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0)) .cse2)))))) .cse1)) (fp.leq v_prenex_1 ((_ to_fp 11 53) roundNearestTiesToEven 3.0))))) (exists ((v_prenex_3 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (.cse5 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (and (fp.geq v_prenex_3 .cse3) (fp.leq v_prenex_3 ((_ to_fp 11 53) roundNearestTiesToEven 3.0)) (not (fp.geq (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 11863283.0 8388608.0)) (fp.add roundNearestTiesToEven .cse3 (let ((.cse4 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven v_prenex_3 .cse5) .cse3))) (fp.mul roundNearestTiesToEven .cse4 (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0)) .cse4)))))) .cse3)) (fp.geq v_prenex_3 .cse5))))) is different from false [2018-11-18 11:15:13,060 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_1 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (and (fp.geq v_prenex_1 .cse0) (fp.geq v_prenex_1 .cse1) (not (fp.leq (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 11863283.0 8388608.0)) (fp.add roundNearestTiesToEven .cse0 (let ((.cse2 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven v_prenex_1 .cse1) .cse0))) (fp.mul roundNearestTiesToEven .cse2 (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0)) .cse2)))))) .cse1)) (fp.leq v_prenex_1 ((_ to_fp 11 53) roundNearestTiesToEven 3.0))))) (exists ((v_prenex_3 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (.cse5 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (and (fp.geq v_prenex_3 .cse3) (fp.leq v_prenex_3 ((_ to_fp 11 53) roundNearestTiesToEven 3.0)) (not (fp.geq (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 11863283.0 8388608.0)) (fp.add roundNearestTiesToEven .cse3 (let ((.cse4 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven v_prenex_3 .cse5) .cse3))) (fp.mul roundNearestTiesToEven .cse4 (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0)) .cse4)))))) .cse3)) (fp.geq v_prenex_3 .cse5))))) is different from true [2018-11-18 11:15:13,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:15:13,066 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:15:13,089 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:15:13,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 11:15:13,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 11:15:13,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 11:15:13,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=8, Unknown=6, NotChecked=28, Total=56 [2018-11-18 11:15:13,101 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 8 states. [2018-11-18 11:15:17,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:15:17,839 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-11-18 11:15:17,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 11:15:17,841 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2018-11-18 11:15:17,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:15:17,849 INFO L225 Difference]: With dead ends: 31 [2018-11-18 11:15:17,849 INFO L226 Difference]: Without dead ends: 12 [2018-11-18 11:15:17,852 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=14, Invalid=8, Unknown=6, NotChecked=28, Total=56 [2018-11-18 11:15:17,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-18 11:15:17,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-18 11:15:17,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-18 11:15:17,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2018-11-18 11:15:17,881 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2018-11-18 11:15:17,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:15:17,881 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2018-11-18 11:15:17,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 11:15:17,882 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2018-11-18 11:15:17,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 11:15:17,882 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:15:17,882 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:15:17,883 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:15:17,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:15:17,883 INFO L82 PathProgramCache]: Analyzing trace with hash -2109639053, now seen corresponding path program 1 times [2018-11-18 11:15:17,883 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:15:17,884 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-18 11:15:17,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:15:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:15:21,655 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:15:23,779 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~I~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (fp.geq main_~I~0 .cse0) (not (fp.geq main_~I~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (= (fp.add roundNearestTiesToEven .cse0 (let ((.cse1 (fp.sub roundNearestTiesToEven main_~I~0 .cse0))) (fp.mul roundNearestTiesToEven .cse1 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven .cse1 (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0))) (fp.mul roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 16.0))))))))) c_main_~S~0) (fp.leq main_~I~0 ((_ to_fp 11 53) roundNearestTiesToEven 3.0))))) is different from false [2018-11-18 11:15:25,876 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~I~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (fp.geq main_~I~0 .cse0) (not (fp.geq main_~I~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (= (fp.add roundNearestTiesToEven .cse0 (let ((.cse1 (fp.sub roundNearestTiesToEven main_~I~0 .cse0))) (fp.mul roundNearestTiesToEven .cse1 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven .cse1 (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0))) (fp.mul roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 16.0))))))))) c_main_~S~0) (fp.leq main_~I~0 ((_ to_fp 11 53) roundNearestTiesToEven 3.0))))) is different from true [2018-11-18 11:15:42,897 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse2 (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) (or (and (exists ((main_~I~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (fp.geq main_~I~0 .cse0) (not (fp.geq main_~I~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (fp.leq main_~I~0 ((_ to_fp 11 53) roundNearestTiesToEven 3.0)) (not (fp.geq (fp.add roundNearestTiesToEven .cse0 (let ((.cse1 (fp.sub roundNearestTiesToEven main_~I~0 .cse0))) (fp.mul roundNearestTiesToEven .cse1 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven .cse1 (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0))) (fp.mul roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 16.0))))))))) .cse0))))) .cse2) (and .cse2 (exists ((v_prenex_5 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (.cse4 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (and (fp.geq v_prenex_5 .cse3) (not (fp.geq v_prenex_5 .cse4)) (not (fp.leq (fp.add roundNearestTiesToEven .cse3 (let ((.cse5 (fp.sub roundNearestTiesToEven v_prenex_5 .cse3))) (fp.mul roundNearestTiesToEven .cse5 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven .cse5 (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0))) (fp.mul roundNearestTiesToEven .cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 16.0))))))))) .cse4)) (fp.leq v_prenex_5 ((_ to_fp 11 53) roundNearestTiesToEven 3.0)))))) (and (= (bvadd |c___VERIFIER_assert_#in~cond| (_ bv4294967295 32)) (_ bv0 32)) (exists ((v_prenex_7 (_ FloatingPoint 11 53))) (let ((.cse7 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse6 (fp.add roundNearestTiesToEven .cse7 (let ((.cse9 (fp.sub roundNearestTiesToEven v_prenex_7 .cse7))) (fp.mul roundNearestTiesToEven .cse9 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven .cse9 (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0))) (fp.mul roundNearestTiesToEven .cse9 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 16.0)))))))))) (.cse8 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (and (fp.geq .cse6 .cse7) (fp.geq v_prenex_7 .cse7) (fp.leq v_prenex_7 ((_ to_fp 11 53) roundNearestTiesToEven 3.0)) (fp.leq .cse6 .cse8) (not (fp.geq v_prenex_7 .cse8))))))))) is different from false [2018-11-18 11:15:57,834 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 (= (_ bv0 32) c___VERIFIER_assert_~cond))) (or (and .cse0 (exists ((main_~I~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (fp.geq main_~I~0 .cse1) (not (fp.geq main_~I~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (fp.leq main_~I~0 ((_ to_fp 11 53) roundNearestTiesToEven 3.0)) (not (fp.geq (fp.add roundNearestTiesToEven .cse1 (let ((.cse2 (fp.sub roundNearestTiesToEven main_~I~0 .cse1))) (fp.mul roundNearestTiesToEven .cse2 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven .cse2 (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0))) (fp.mul roundNearestTiesToEven .cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 16.0))))))))) .cse1)))))) (and .cse0 (exists ((v_prenex_5 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (.cse4 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (and (fp.geq v_prenex_5 .cse3) (not (fp.geq v_prenex_5 .cse4)) (not (fp.leq (fp.add roundNearestTiesToEven .cse3 (let ((.cse5 (fp.sub roundNearestTiesToEven v_prenex_5 .cse3))) (fp.mul roundNearestTiesToEven .cse5 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven .cse5 (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0))) (fp.mul roundNearestTiesToEven .cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 16.0))))))))) .cse4)) (fp.leq v_prenex_5 ((_ to_fp 11 53) roundNearestTiesToEven 3.0)))))) (and (exists ((v_prenex_7 (_ FloatingPoint 11 53))) (let ((.cse7 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse6 (fp.add roundNearestTiesToEven .cse7 (let ((.cse9 (fp.sub roundNearestTiesToEven v_prenex_7 .cse7))) (fp.mul roundNearestTiesToEven .cse9 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven .cse9 (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0))) (fp.mul roundNearestTiesToEven .cse9 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 16.0)))))))))) (.cse8 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (and (fp.geq .cse6 .cse7) (fp.geq v_prenex_7 .cse7) (fp.leq v_prenex_7 ((_ to_fp 11 53) roundNearestTiesToEven 3.0)) (fp.leq .cse6 .cse8) (not (fp.geq v_prenex_7 .cse8)))))) (= (bvadd c___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))))) is different from false [2018-11-18 11:16:08,480 WARN L832 $PredicateComparison]: unable to prove that (or (exists ((main_~I~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (fp.geq main_~I~0 .cse0) (not (fp.geq main_~I~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (fp.leq main_~I~0 ((_ to_fp 11 53) roundNearestTiesToEven 3.0)) (not (fp.geq (fp.add roundNearestTiesToEven .cse0 (let ((.cse1 (fp.sub roundNearestTiesToEven main_~I~0 .cse0))) (fp.mul roundNearestTiesToEven .cse1 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven .cse1 (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0))) (fp.mul roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 16.0))))))))) .cse0))))) (exists ((v_prenex_5 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (and (fp.geq v_prenex_5 .cse2) (not (fp.geq v_prenex_5 .cse3)) (not (fp.leq (fp.add roundNearestTiesToEven .cse2 (let ((.cse4 (fp.sub roundNearestTiesToEven v_prenex_5 .cse2))) (fp.mul roundNearestTiesToEven .cse4 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven .cse4 (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0))) (fp.mul roundNearestTiesToEven .cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 16.0))))))))) .cse3)) (fp.leq v_prenex_5 ((_ to_fp 11 53) roundNearestTiesToEven 3.0)))))) is different from false [2018-11-18 11:16:10,578 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((main_~I~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (fp.geq main_~I~0 .cse0) (not (fp.geq main_~I~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (fp.leq main_~I~0 ((_ to_fp 11 53) roundNearestTiesToEven 3.0)) (not (fp.geq (fp.add roundNearestTiesToEven .cse0 (let ((.cse1 (fp.sub roundNearestTiesToEven main_~I~0 .cse0))) (fp.mul roundNearestTiesToEven .cse1 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven .cse1 (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0))) (fp.mul roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 16.0))))))))) .cse0))))) (exists ((v_prenex_5 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (and (fp.geq v_prenex_5 .cse2) (not (fp.geq v_prenex_5 .cse3)) (not (fp.leq (fp.add roundNearestTiesToEven .cse2 (let ((.cse4 (fp.sub roundNearestTiesToEven v_prenex_5 .cse2))) (fp.mul roundNearestTiesToEven .cse4 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven .cse4 (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0))) (fp.mul roundNearestTiesToEven .cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 16.0))))))))) .cse3)) (fp.leq v_prenex_5 ((_ to_fp 11 53) roundNearestTiesToEven 3.0)))))) is different from true [2018-11-18 11:16:10,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:16:10,581 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:16:10,604 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:16:10,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 11:16:10,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 11:16:10,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 11:16:10,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=5, Unknown=6, NotChecked=20, Total=42 [2018-11-18 11:16:10,606 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 7 states. [2018-11-18 11:16:12,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:16:12,804 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2018-11-18 11:16:12,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 11:16:12,921 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-11-18 11:16:12,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:16:12,921 INFO L225 Difference]: With dead ends: 12 [2018-11-18 11:16:12,921 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 11:16:12,922 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=11, Invalid=5, Unknown=6, NotChecked=20, Total=42 [2018-11-18 11:16:12,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 11:16:12,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 11:16:12,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 11:16:12,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 11:16:12,923 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2018-11-18 11:16:12,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:16:12,923 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 11:16:12,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 11:16:12,924 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 11:16:12,924 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 11:16:12,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 11:16:21,178 WARN L180 SmtUtils]: Spent 8.20 s on a formula simplification. DAG size of input: 158 DAG size of output: 1 [2018-11-18 11:16:38,034 WARN L180 SmtUtils]: Spent 16.86 s on a formula simplification that was a NOOP. DAG size: 46 [2018-11-18 11:16:38,036 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 11:16:38,037 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 11:16:38,037 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 11:16:38,037 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 11:16:38,037 INFO L421 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (= ((_ to_fp 11 53) roundNearestTiesToEven (/ 11863283.0 8388608.0)) ~sqrt2~0) [2018-11-18 11:16:38,037 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 11:16:38,037 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 11:16:38,038 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 15 27) the Hoare annotation is: true [2018-11-18 11:16:38,038 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 15 27) no Hoare annotation was computed. [2018-11-18 11:16:38,038 INFO L425 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-11-18 11:16:38,038 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 15 27) no Hoare annotation was computed. [2018-11-18 11:16:38,038 INFO L425 ceAbstractionStarter]: For program point L22(lines 22 23) no Hoare annotation was computed. [2018-11-18 11:16:38,039 INFO L421 ceAbstractionStarter]: At program point L22-2(lines 22 23) the Hoare annotation is: (or (exists ((main_~I~0 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (= (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 11863283.0 8388608.0)) (fp.add roundNearestTiesToEven .cse0 (let ((.cse1 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven main_~I~0 .cse2) .cse0))) (fp.mul roundNearestTiesToEven .cse1 (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0)) .cse1)))))) main_~S~0) (fp.geq main_~I~0 .cse2) (fp.geq main_~I~0 .cse0) (fp.leq main_~I~0 ((_ to_fp 11 53) roundNearestTiesToEven 3.0))))) (not (= ((_ to_fp 11 53) roundNearestTiesToEven (/ 11863283.0 8388608.0)) ~sqrt2~0)) (exists ((main_~I~0 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (fp.geq main_~I~0 .cse3) (not (fp.geq main_~I~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (= (fp.add roundNearestTiesToEven .cse3 (let ((.cse4 (fp.sub roundNearestTiesToEven main_~I~0 .cse3))) (fp.mul roundNearestTiesToEven .cse4 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven .cse4 (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0))) (fp.mul roundNearestTiesToEven .cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 16.0))))))))) main_~S~0) (fp.leq main_~I~0 ((_ to_fp 11 53) roundNearestTiesToEven 3.0)))))) [2018-11-18 11:16:38,039 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 11) the Hoare annotation is: true [2018-11-18 11:16:38,039 INFO L425 ceAbstractionStarter]: For program point L11(line 11) no Hoare annotation was computed. [2018-11-18 11:16:38,039 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2018-11-18 11:16:38,040 INFO L425 ceAbstractionStarter]: For program point L11-1(line 11) no Hoare annotation was computed. [2018-11-18 11:16:38,040 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 11) no Hoare annotation was computed. [2018-11-18 11:16:38,040 INFO L425 ceAbstractionStarter]: For program point L11-3(line 11) no Hoare annotation was computed. [2018-11-18 11:16:38,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 11:16:38 BoogieIcfgContainer [2018-11-18 11:16:38,042 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 11:16:38,043 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 11:16:38,043 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 11:16:38,043 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 11:16:38,043 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:14:20" (3/4) ... [2018-11-18 11:16:38,046 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 11:16:38,051 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 11:16:38,051 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 11:16:38,051 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-18 11:16:38,054 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 11:16:38,054 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-18 11:16:38,054 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 11:16:38,077 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_86bdcadf-9971-4d5f-8457-400900e2490b/bin-2019/uautomizer/witness.graphml [2018-11-18 11:16:38,078 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 11:16:38,078 INFO L168 Benchmark]: Toolchain (without parser) took 141851.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -110.1 MB). Peak memory consumption was 55.1 MB. Max. memory is 11.5 GB. [2018-11-18 11:16:38,079 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:16:38,079 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.97 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:16:38,079 INFO L168 Benchmark]: Boogie Preprocessor took 22.86 ms. Allocated memory is still 1.0 GB. Free memory was 937.9 MB in the beginning and 932.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 11:16:38,080 INFO L168 Benchmark]: RCFGBuilder took 4364.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -202.3 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2018-11-18 11:16:38,080 INFO L168 Benchmark]: TraceAbstraction took 137255.31 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: 76.1 MB). Peak memory consumption was 76.1 MB. Max. memory is 11.5 GB. [2018-11-18 11:16:38,080 INFO L168 Benchmark]: Witness Printer took 34.97 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:16:38,082 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 170.97 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.86 ms. Allocated memory is still 1.0 GB. Free memory was 937.9 MB in the beginning and 932.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 4364.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -202.3 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 137255.31 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: 76.1 MB). Peak memory consumption was 76.1 MB. Max. memory is 11.5 GB. * Witness Printer took 34.97 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 137.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 7.0s AutomataDifference, 0.0s DeadEndRemovalTime, 25.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 2 SDslu, 62 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 6.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 7 PreInvPairs, 8 NumberOfFragments, 142 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 1067 FormulaSimplificationTreeSizeReductionInter, 25.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 7.1s SatisfiabilityAnalysisTime, 97.7s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 8 QuantifiedInterpolants, 14830 SizeOfPredicates, 7 NumberOfNonLiveVariables, 42 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...