./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1032a_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1032a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/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 8d015b2bc8cb93a5e0ac1240dd23d0cf22b0709d ................................................................................................................................................................................................................................................................................................................... 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_74aaf926-6eac-4d9e-ba6e-871eef2b510e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1032a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/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 8d015b2bc8cb93a5e0ac1240dd23d0cf22b0709d .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 12:52:40,005 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 12:52:40,007 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 12:52:40,015 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 12:52:40,015 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 12:52:40,016 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 12:52:40,017 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 12:52:40,018 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 12:52:40,020 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 12:52:40,020 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 12:52:40,021 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 12:52:40,021 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 12:52:40,022 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 12:52:40,022 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 12:52:40,023 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 12:52:40,023 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 12:52:40,024 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 12:52:40,025 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 12:52:40,027 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 12:52:40,028 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 12:52:40,028 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 12:52:40,029 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 12:52:40,031 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 12:52:40,031 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 12:52:40,031 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 12:52:40,032 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 12:52:40,033 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 12:52:40,033 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 12:52:40,034 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 12:52:40,034 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 12:52:40,035 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 12:52:40,035 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 12:52:40,035 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 12:52:40,035 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 12:52:40,036 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 12:52:40,037 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 12:52:40,037 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 12:52:40,047 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 12:52:40,047 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 12:52:40,048 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 12:52:40,048 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 12:52:40,048 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 12:52:40,048 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 12:52:40,048 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 12:52:40,049 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 12:52:40,049 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 12:52:40,049 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 12:52:40,049 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 12:52:40,049 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 12:52:40,049 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 12:52:40,049 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 12:52:40,050 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 12:52:40,050 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 12:52:40,050 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 12:52:40,050 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 12:52:40,050 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 12:52:40,050 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 12:52:40,050 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 12:52:40,051 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 12:52:40,051 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 12:52:40,051 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 12:52:40,051 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 12:52:40,051 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 12:52:40,051 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 12:52:40,051 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 12:52:40,052 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 12:52:40,052 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 12:52:40,052 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_74aaf926-6eac-4d9e-ba6e-871eef2b510e/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 -> 8d015b2bc8cb93a5e0ac1240dd23d0cf22b0709d [2018-11-28 12:52:40,076 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 12:52:40,085 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 12:52:40,087 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 12:52:40,087 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 12:52:40,088 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 12:52:40,088 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1032a_true-unreach-call.c [2018-11-28 12:52:40,125 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/bin-2019/uautomizer/data/6559f0c0f/77542a39d32240f781840ad4fb28fe1f/FLAGf145650e2 [2018-11-28 12:52:40,532 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 12:52:40,532 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/sv-benchmarks/c/float-newlib/double_req_bl_1032a_true-unreach-call.c [2018-11-28 12:52:40,536 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/bin-2019/uautomizer/data/6559f0c0f/77542a39d32240f781840ad4fb28fe1f/FLAGf145650e2 [2018-11-28 12:52:40,545 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/bin-2019/uautomizer/data/6559f0c0f/77542a39d32240f781840ad4fb28fe1f [2018-11-28 12:52:40,547 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 12:52:40,548 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 12:52:40,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 12:52:40,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 12:52:40,551 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 12:52:40,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:52:40" (1/1) ... [2018-11-28 12:52:40,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5168306f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:52:40, skipping insertion in model container [2018-11-28 12:52:40,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:52:40" (1/1) ... [2018-11-28 12:52:40,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 12:52:40,571 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 12:52:40,684 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:52:40,686 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 12:52:40,704 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:52:40,716 INFO L195 MainTranslator]: Completed translation [2018-11-28 12:52:40,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:52:40 WrapperNode [2018-11-28 12:52:40,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 12:52:40,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 12:52:40,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 12:52:40,717 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 12:52:40,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:52:40" (1/1) ... [2018-11-28 12:52:40,728 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:52:40" (1/1) ... [2018-11-28 12:52:40,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 12:52:40,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 12:52:40,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 12:52:40,733 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 12:52:40,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:52:40" (1/1) ... [2018-11-28 12:52:40,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:52:40" (1/1) ... [2018-11-28 12:52:40,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:52:40" (1/1) ... [2018-11-28 12:52:40,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:52:40" (1/1) ... [2018-11-28 12:52:40,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:52:40" (1/1) ... [2018-11-28 12:52:40,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:52:40" (1/1) ... [2018-11-28 12:52:40,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:52:40" (1/1) ... [2018-11-28 12:52:40,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 12:52:40,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 12:52:40,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 12:52:40,794 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 12:52:40,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:52:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/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 [2018-11-28 12:52:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-11-28 12:52:40,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-11-28 12:52:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 12:52:40,828 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 12:52:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-28 12:52:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 12:52:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 12:52:40,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 12:52:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-28 12:52:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 12:52:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2018-11-28 12:52:40,829 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2018-11-28 12:52:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 12:52:40,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 12:52:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 12:52:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 12:52:41,037 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 12:52:41,037 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-28 12:52:41,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:52:41 BoogieIcfgContainer [2018-11-28 12:52:41,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 12:52:41,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 12:52:41,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 12:52:41,040 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 12:52:41,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:52:40" (1/3) ... [2018-11-28 12:52:41,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c612e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:52:41, skipping insertion in model container [2018-11-28 12:52:41,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:52:40" (2/3) ... [2018-11-28 12:52:41,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c612e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:52:41, skipping insertion in model container [2018-11-28 12:52:41,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:52:41" (3/3) ... [2018-11-28 12:52:41,042 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032a_true-unreach-call.c [2018-11-28 12:52:41,048 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 12:52:41,052 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 12:52:41,062 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 12:52:41,081 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 12:52:41,082 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 12:52:41,082 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 12:52:41,082 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 12:52:41,082 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 12:52:41,082 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 12:52:41,082 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 12:52:41,082 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 12:52:41,082 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 12:52:41,093 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-11-28 12:52:41,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 12:52:41,097 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:52:41,098 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:52:41,099 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:52:41,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:52:41,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1666868037, now seen corresponding path program 1 times [2018-11-28 12:52:41,104 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:52:41,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:52:41,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:52:41,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:52:41,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:52:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:52:41,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:52:41,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:52:41,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 12:52:41,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 12:52:41,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 12:52:41,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 12:52:41,208 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-11-28 12:52:41,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:52:41,222 INFO L93 Difference]: Finished difference Result 78 states and 109 transitions. [2018-11-28 12:52:41,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 12:52:41,223 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-11-28 12:52:41,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:52:41,229 INFO L225 Difference]: With dead ends: 78 [2018-11-28 12:52:41,229 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 12:52:41,231 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 12:52:41,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 12:52:41,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-28 12:52:41,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-28 12:52:41,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2018-11-28 12:52:41,260 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 19 [2018-11-28 12:52:41,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:52:41,260 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2018-11-28 12:52:41,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 12:52:41,260 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2018-11-28 12:52:41,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 12:52:41,261 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:52:41,261 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:52:41,261 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:52:41,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:52:41,262 INFO L82 PathProgramCache]: Analyzing trace with hash -165901892, now seen corresponding path program 1 times [2018-11-28 12:52:41,262 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:52:41,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:52:41,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:52:41,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:52:41,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:52:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:52:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:52:41,326 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 12:52:41,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:52:41 BoogieIcfgContainer [2018-11-28 12:52:41,344 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 12:52:41,344 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 12:52:41,344 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 12:52:41,345 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 12:52:41,345 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:52:41" (3/4) ... [2018-11-28 12:52:41,349 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 12:52:41,349 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 12:52:41,350 INFO L168 Benchmark]: Toolchain (without parser) took 801.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 959.8 MB in the beginning and 1.1 GB in the end (delta: -114.6 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2018-11-28 12:52:41,351 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:52:41,352 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.84 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 949.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 12:52:41,352 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.38 ms. Allocated memory is still 1.0 GB. Free memory was 949.0 MB in the beginning and 946.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-28 12:52:41,353 INFO L168 Benchmark]: Boogie Preprocessor took 60.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -186.6 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-11-28 12:52:41,354 INFO L168 Benchmark]: RCFGBuilder took 244.02 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-11-28 12:52:41,354 INFO L168 Benchmark]: TraceAbstraction took 306.25 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: 37.2 MB). Peak memory consumption was 37.2 MB. Max. memory is 11.5 GB. [2018-11-28 12:52:41,355 INFO L168 Benchmark]: Witness Printer took 4.54 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. [2018-11-28 12:52:41,357 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 167.84 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 949.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.38 ms. Allocated memory is still 1.0 GB. Free memory was 949.0 MB in the beginning and 946.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 60.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -186.6 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 244.02 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 306.25 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: 37.2 MB). Peak memory consumption was 37.2 MB. Max. memory is 11.5 GB. * Witness Printer took 4.54 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: 91]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 90, overapproximation of shiftRight at line 34, overapproximation of bitwiseAnd at line 35. Possible FailurePath: [L86] double x = 0.0; VAL [x=0] [L87] CALL, EXPR round_double(x) VAL [\old(x)=0] [L18] __int32_t msw, exponent_less_1023; [L19] __uint32_t lsw; VAL [\old(x)=0, x=0] [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L26] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=0, exponent_less_1023=0, lsw=0, msw=2, x=0] [L27] COND TRUE exponent_less_1023 < 20 VAL [\old(x)=0, exponent_less_1023=0, lsw=0, msw=2, x=0] [L28] COND FALSE !(exponent_less_1023 < 0) [L34] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; VAL [\old(x)=0, exponent_less_1023=0, lsw=0, msw=2, x=0] [L35] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L36] return x; VAL [\old(x)=0, \result=0, exponent_less_1023=0, lsw=0, msw=2, x=0] [L87] RET, EXPR round_double(x) VAL [round_double(x)=0, x=0] [L87] double res = round_double(x); [L90] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=0, res == 0.0 && __signbit_double(res) == 0=0, x=0] [L90] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L91] __VERIFIER_error() VAL [res=0, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 51 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 0.1.23-0cd3be1 [2018-11-28 12:52:42,820 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 12:52:42,821 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 12:52:42,829 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 12:52:42,830 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 12:52:42,830 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 12:52:42,831 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 12:52:42,832 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 12:52:42,833 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 12:52:42,834 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 12:52:42,835 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 12:52:42,835 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 12:52:42,836 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 12:52:42,837 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 12:52:42,837 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 12:52:42,838 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 12:52:42,838 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 12:52:42,840 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 12:52:42,841 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 12:52:42,842 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 12:52:42,843 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 12:52:42,844 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 12:52:42,846 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 12:52:42,846 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 12:52:42,846 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 12:52:42,847 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 12:52:42,848 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 12:52:42,849 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 12:52:42,849 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 12:52:42,850 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 12:52:42,850 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 12:52:42,850 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 12:52:42,851 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 12:52:42,851 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 12:52:42,852 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 12:52:42,852 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 12:52:42,853 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 12:52:42,863 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 12:52:42,863 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 12:52:42,864 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 12:52:42,864 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 12:52:42,865 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 12:52:42,865 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 12:52:42,865 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 12:52:42,865 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 12:52:42,865 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 12:52:42,865 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 12:52:42,865 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 12:52:42,866 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 12:52:42,866 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 12:52:42,866 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 12:52:42,866 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 12:52:42,866 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 12:52:42,866 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 12:52:42,866 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 12:52:42,866 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 12:52:42,868 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 12:52:42,868 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 12:52:42,869 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 12:52:42,869 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 12:52:42,869 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 12:52:42,869 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 12:52:42,869 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 12:52:42,869 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 12:52:42,869 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 12:52:42,869 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 12:52:42,870 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 12:52:42,870 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 12:52:42,870 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 12:52:42,870 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_74aaf926-6eac-4d9e-ba6e-871eef2b510e/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 -> 8d015b2bc8cb93a5e0ac1240dd23d0cf22b0709d [2018-11-28 12:52:42,898 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 12:52:42,908 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 12:52:42,910 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 12:52:42,912 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 12:52:42,912 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 12:52:42,913 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1032a_true-unreach-call.c [2018-11-28 12:52:42,960 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/bin-2019/uautomizer/data/eacd43bcb/4f7d0161d7ee4aeaa06b784818dd3ca4/FLAG504c793f3 [2018-11-28 12:52:43,281 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 12:52:43,282 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/sv-benchmarks/c/float-newlib/double_req_bl_1032a_true-unreach-call.c [2018-11-28 12:52:43,287 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/bin-2019/uautomizer/data/eacd43bcb/4f7d0161d7ee4aeaa06b784818dd3ca4/FLAG504c793f3 [2018-11-28 12:52:43,715 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/bin-2019/uautomizer/data/eacd43bcb/4f7d0161d7ee4aeaa06b784818dd3ca4 [2018-11-28 12:52:43,717 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 12:52:43,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 12:52:43,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 12:52:43,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 12:52:43,722 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 12:52:43,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:52:43" (1/1) ... [2018-11-28 12:52:43,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4791341d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:52:43, skipping insertion in model container [2018-11-28 12:52:43,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:52:43" (1/1) ... [2018-11-28 12:52:43,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 12:52:43,746 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 12:52:43,859 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:52:43,863 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 12:52:43,884 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:52:43,903 INFO L195 MainTranslator]: Completed translation [2018-11-28 12:52:43,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:52:43 WrapperNode [2018-11-28 12:52:43,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 12:52:43,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 12:52:43,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 12:52:43,904 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 12:52:43,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:52:43" (1/1) ... [2018-11-28 12:52:43,916 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:52:43" (1/1) ... [2018-11-28 12:52:43,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 12:52:43,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 12:52:43,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 12:52:43,921 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 12:52:43,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:52:43" (1/1) ... [2018-11-28 12:52:43,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:52:43" (1/1) ... [2018-11-28 12:52:43,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:52:43" (1/1) ... [2018-11-28 12:52:43,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:52:43" (1/1) ... [2018-11-28 12:52:43,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:52:43" (1/1) ... [2018-11-28 12:52:43,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:52:43" (1/1) ... [2018-11-28 12:52:43,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:52:43" (1/1) ... [2018-11-28 12:52:43,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 12:52:43,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 12:52:43,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 12:52:43,947 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 12:52:43,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:52:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/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 [2018-11-28 12:52:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-11-28 12:52:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-11-28 12:52:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-11-28 12:52:44,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-11-28 12:52:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 12:52:44,031 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 12:52:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 12:52:44,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 12:52:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 12:52:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 12:52:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2018-11-28 12:52:44,031 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2018-11-28 12:52:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 12:52:44,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 12:52:44,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-28 12:52:44,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 12:52:44,188 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 12:52:44,309 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 12:52:44,326 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 12:52:44,326 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-28 12:52:44,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:52:44 BoogieIcfgContainer [2018-11-28 12:52:44,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 12:52:44,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 12:52:44,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 12:52:44,330 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 12:52:44,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:52:43" (1/3) ... [2018-11-28 12:52:44,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3698def4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:52:44, skipping insertion in model container [2018-11-28 12:52:44,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:52:43" (2/3) ... [2018-11-28 12:52:44,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3698def4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:52:44, skipping insertion in model container [2018-11-28 12:52:44,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:52:44" (3/3) ... [2018-11-28 12:52:44,332 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032a_true-unreach-call.c [2018-11-28 12:52:44,340 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 12:52:44,346 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 12:52:44,355 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 12:52:44,374 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 12:52:44,375 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 12:52:44,375 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 12:52:44,375 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 12:52:44,375 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 12:52:44,375 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 12:52:44,375 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 12:52:44,375 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 12:52:44,375 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 12:52:44,386 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-11-28 12:52:44,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 12:52:44,390 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:52:44,391 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:52:44,392 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:52:44,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:52:44,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1666868037, now seen corresponding path program 1 times [2018-11-28 12:52:44,398 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 12:52:44,399 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/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 [2018-11-28 12:52:44,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:52:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:52:44,440 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:52:44,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:52:44,453 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 12:52:44,466 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:52:44,466 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 12:52:44,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 12:52:44,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 12:52:44,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 12:52:44,477 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-11-28 12:52:44,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:52:44,492 INFO L93 Difference]: Finished difference Result 78 states and 109 transitions. [2018-11-28 12:52:44,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 12:52:44,493 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-11-28 12:52:44,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:52:44,501 INFO L225 Difference]: With dead ends: 78 [2018-11-28 12:52:44,501 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 12:52:44,504 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 12:52:44,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 12:52:44,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-28 12:52:44,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-28 12:52:44,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2018-11-28 12:52:44,531 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 19 [2018-11-28 12:52:44,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:52:44,531 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2018-11-28 12:52:44,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 12:52:44,531 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2018-11-28 12:52:44,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 12:52:44,532 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:52:44,532 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:52:44,533 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:52:44,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:52:44,533 INFO L82 PathProgramCache]: Analyzing trace with hash -165901892, now seen corresponding path program 1 times [2018-11-28 12:52:44,533 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 12:52:44,533 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/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 [2018-11-28 12:52:44,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:52:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:52:44,587 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:52:44,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:52:44,699 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 12:52:44,708 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:52:44,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 12:52:44,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 12:52:44,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 12:52:44,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 12:52:44,710 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 7 states. [2018-11-28 12:52:45,203 WARN L180 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-11-28 12:52:46,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:52:46,043 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2018-11-28 12:52:46,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 12:52:46,044 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-11-28 12:52:46,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:52:46,044 INFO L225 Difference]: With dead ends: 65 [2018-11-28 12:52:46,045 INFO L226 Difference]: Without dead ends: 33 [2018-11-28 12:52:46,045 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-11-28 12:52:46,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-28 12:52:46,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-28 12:52:46,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 12:52:46,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-11-28 12:52:46,049 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 20 [2018-11-28 12:52:46,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:52:46,049 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-11-28 12:52:46,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 12:52:46,049 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-11-28 12:52:46,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 12:52:46,050 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:52:46,050 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:52:46,050 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:52:46,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:52:46,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1090994049, now seen corresponding path program 1 times [2018-11-28 12:52:46,051 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 12:52:46,051 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-28 12:52:46,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:52:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:52:46,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:52:46,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:52:46,198 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 12:52:46,210 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:52:46,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 12:52:46,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 12:52:46,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 12:52:46,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 12:52:46,211 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 7 states. [2018-11-28 12:52:47,094 WARN L180 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-11-28 12:52:47,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:52:47,315 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2018-11-28 12:52:47,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 12:52:47,317 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2018-11-28 12:52:47,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:52:47,317 INFO L225 Difference]: With dead ends: 52 [2018-11-28 12:52:47,317 INFO L226 Difference]: Without dead ends: 33 [2018-11-28 12:52:47,318 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-11-28 12:52:47,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-28 12:52:47,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-28 12:52:47,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 12:52:47,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-11-28 12:52:47,322 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 24 [2018-11-28 12:52:47,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:52:47,322 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-11-28 12:52:47,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 12:52:47,322 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-11-28 12:52:47,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 12:52:47,323 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:52:47,323 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:52:47,323 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:52:47,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:52:47,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1792058627, now seen corresponding path program 1 times [2018-11-28 12:52:47,324 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 12:52:47,325 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/bin-2019/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-28 12:52:47,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:52:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:52:47,376 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:52:47,409 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2018-11-28 12:52:47,411 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 38 [2018-11-28 12:52:47,422 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-11-28 12:52:47,422 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-28 12:52:47,424 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:52:47,426 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:52:47,428 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-28 12:52:47,428 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:51, output treesize:21 [2018-11-28 12:52:47,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:52:47,479 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 12:52:47,491 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:52:47,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 12:52:47,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 12:52:47,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 12:52:47,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-11-28 12:52:47,492 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 8 states. [2018-11-28 12:52:47,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:52:47,647 INFO L93 Difference]: Finished difference Result 36 states and 35 transitions. [2018-11-28 12:52:47,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 12:52:47,647 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2018-11-28 12:52:47,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:52:47,648 INFO L225 Difference]: With dead ends: 36 [2018-11-28 12:52:47,648 INFO L226 Difference]: Without dead ends: 33 [2018-11-28 12:52:47,648 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-11-28 12:52:47,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-28 12:52:47,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-28 12:52:47,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 12:52:47,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 32 transitions. [2018-11-28 12:52:47,651 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 32 transitions. Word has length 24 [2018-11-28 12:52:47,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:52:47,651 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 32 transitions. [2018-11-28 12:52:47,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 12:52:47,652 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 32 transitions. [2018-11-28 12:52:47,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 12:52:47,652 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:52:47,652 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:52:47,652 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:52:47,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:52:47,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1819196168, now seen corresponding path program 1 times [2018-11-28 12:52:47,653 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 12:52:47,653 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/bin-2019/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-28 12:52:47,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:52:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:52:47,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:52:47,778 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 48 [2018-11-28 12:52:47,781 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 39 [2018-11-28 12:52:47,794 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2018-11-28 12:52:47,794 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-28 12:52:47,798 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:52:47,802 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:52:47,813 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-28 12:52:47,814 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:64, output treesize:34 [2018-11-28 12:52:48,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:52:48,246 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 12:52:48,253 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:52:48,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-11-28 12:52:48,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 12:52:48,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 12:52:48,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-11-28 12:52:48,254 INFO L87 Difference]: Start difference. First operand 33 states and 32 transitions. Second operand 15 states. [2018-11-28 12:52:49,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:52:49,639 INFO L93 Difference]: Finished difference Result 33 states and 32 transitions. [2018-11-28 12:52:49,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-28 12:52:49,640 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 32 [2018-11-28 12:52:49,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:52:49,640 INFO L225 Difference]: With dead ends: 33 [2018-11-28 12:52:49,640 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 12:52:49,641 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2018-11-28 12:52:49,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 12:52:49,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 12:52:49,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 12:52:49,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 12:52:49,641 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2018-11-28 12:52:49,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:52:49,641 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 12:52:49,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 12:52:49,642 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 12:52:49,642 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 12:52:49,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 12:52:49,704 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-28 12:52:49,704 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-28 12:52:49,704 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 12:52:49,704 INFO L448 ceAbstractionStarter]: For program point L27(lines 27 56) no Hoare annotation was computed. [2018-11-28 12:52:49,704 INFO L448 ceAbstractionStarter]: For program point round_doubleFINAL(lines 17 64) no Hoare annotation was computed. [2018-11-28 12:52:49,704 INFO L448 ceAbstractionStarter]: For program point L52(lines 52 53) no Hoare annotation was computed. [2018-11-28 12:52:49,705 INFO L448 ceAbstractionStarter]: For program point L52-2(lines 52 53) no Hoare annotation was computed. [2018-11-28 12:52:49,705 INFO L451 ceAbstractionStarter]: At program point round_doubleENTRY(lines 17 64) the Hoare annotation is: true [2018-11-28 12:52:49,705 INFO L448 ceAbstractionStarter]: For program point L28(lines 28 40) no Hoare annotation was computed. [2018-11-28 12:52:49,705 INFO L448 ceAbstractionStarter]: For program point L57(lines 57 62) no Hoare annotation was computed. [2018-11-28 12:52:49,705 INFO L448 ceAbstractionStarter]: For program point L57-1(lines 17 64) no Hoare annotation was computed. [2018-11-28 12:52:49,705 INFO L448 ceAbstractionStarter]: For program point L57-2(lines 57 62) no Hoare annotation was computed. [2018-11-28 12:52:49,705 INFO L448 ceAbstractionStarter]: For program point round_doubleEXIT(lines 17 64) no Hoare annotation was computed. [2018-11-28 12:52:49,705 INFO L448 ceAbstractionStarter]: For program point L20-1(lines 20 25) no Hoare annotation was computed. [2018-11-28 12:52:49,705 INFO L444 ceAbstractionStarter]: At program point L20-2(lines 20 25) the Hoare annotation is: (= |round_double_#in~x| round_double_~x) [2018-11-28 12:52:49,705 INFO L448 ceAbstractionStarter]: For program point L20-3(lines 20 25) no Hoare annotation was computed. [2018-11-28 12:52:49,705 INFO L448 ceAbstractionStarter]: For program point L49(lines 49 50) no Hoare annotation was computed. [2018-11-28 12:52:49,706 INFO L448 ceAbstractionStarter]: For program point L41(lines 41 56) no Hoare annotation was computed. [2018-11-28 12:52:49,706 INFO L448 ceAbstractionStarter]: For program point L42(lines 42 45) no Hoare annotation was computed. [2018-11-28 12:52:49,706 INFO L448 ceAbstractionStarter]: For program point L30(lines 30 31) no Hoare annotation was computed. [2018-11-28 12:52:49,706 INFO L448 ceAbstractionStarter]: For program point L30-2(lines 30 31) no Hoare annotation was computed. [2018-11-28 12:52:49,706 INFO L448 ceAbstractionStarter]: For program point L35(lines 35 36) no Hoare annotation was computed. [2018-11-28 12:52:49,706 INFO L448 ceAbstractionStarter]: For program point __signbit_doubleFINAL(lines 66 76) no Hoare annotation was computed. [2018-11-28 12:52:49,706 INFO L448 ceAbstractionStarter]: For program point __signbit_doubleEXIT(lines 66 76) no Hoare annotation was computed. [2018-11-28 12:52:49,706 INFO L451 ceAbstractionStarter]: At program point __signbit_doubleENTRY(lines 66 76) the Hoare annotation is: true [2018-11-28 12:52:49,706 INFO L448 ceAbstractionStarter]: For program point L69-1(lines 69 73) no Hoare annotation was computed. [2018-11-28 12:52:49,706 INFO L444 ceAbstractionStarter]: At program point L69-2(lines 69 73) the Hoare annotation is: (= |__signbit_double_#in~x| __signbit_double_~x) [2018-11-28 12:52:49,707 INFO L448 ceAbstractionStarter]: For program point L69-3(lines 69 73) no Hoare annotation was computed. [2018-11-28 12:52:49,707 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 12:52:49,707 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 12:52:49,707 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 12:52:49,707 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 12:52:49,707 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 78 96) the Hoare annotation is: true [2018-11-28 12:52:49,707 INFO L448 ceAbstractionStarter]: For program point L91(line 91) no Hoare annotation was computed. [2018-11-28 12:52:49,707 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 91) no Hoare annotation was computed. [2018-11-28 12:52:49,707 INFO L448 ceAbstractionStarter]: For program point L90(line 90) no Hoare annotation was computed. [2018-11-28 12:52:49,708 INFO L444 ceAbstractionStarter]: At program point L90-1(line 90) the Hoare annotation is: (and (exists ((|v_q#valueAsBitvector_5| (_ BitVec 64)) (round_double_~lsw~0 (_ BitVec 32))) (and (= (let ((.cse0 (concat (bvand (_ bv2147483648 32) ((_ extract 63 32) |v_q#valueAsBitvector_5|)) round_double_~lsw~0))) (fp ((_ extract 63 63) .cse0) ((_ extract 62 52) .cse0) ((_ extract 51 0) .cse0))) main_~res~0) (= (_ +zero 11 53) (fp ((_ extract 63 63) |v_q#valueAsBitvector_5|) ((_ extract 62 52) |v_q#valueAsBitvector_5|) ((_ extract 51 0) |v_q#valueAsBitvector_5|))))) (= (_ +zero 11 53) main_~x~0) |main_#t~short10|) [2018-11-28 12:52:49,708 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 78 96) no Hoare annotation was computed. [2018-11-28 12:52:49,708 INFO L448 ceAbstractionStarter]: For program point L90-2(line 90) no Hoare annotation was computed. [2018-11-28 12:52:49,708 INFO L444 ceAbstractionStarter]: At program point L87(line 87) the Hoare annotation is: (= (_ +zero 11 53) main_~x~0) [2018-11-28 12:52:49,708 INFO L448 ceAbstractionStarter]: For program point L87-1(line 87) no Hoare annotation was computed. [2018-11-28 12:52:49,708 INFO L448 ceAbstractionStarter]: For program point L90-4(lines 90 93) no Hoare annotation was computed. [2018-11-28 12:52:49,708 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 78 96) no Hoare annotation was computed. [2018-11-28 12:52:49,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:52:49 BoogieIcfgContainer [2018-11-28 12:52:49,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 12:52:49,718 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 12:52:49,718 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 12:52:49,718 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 12:52:49,718 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:52:44" (3/4) ... [2018-11-28 12:52:49,722 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 12:52:49,727 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 12:52:49,727 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure round_double [2018-11-28 12:52:49,727 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_double [2018-11-28 12:52:49,727 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 12:52:49,731 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2018-11-28 12:52:49,731 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-11-28 12:52:49,731 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 12:52:49,750 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-11-28 12:52:49,751 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-11-28 12:52:49,774 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_74aaf926-6eac-4d9e-ba6e-871eef2b510e/bin-2019/uautomizer/witness.graphml [2018-11-28 12:52:49,774 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 12:52:49,775 INFO L168 Benchmark]: Toolchain (without parser) took 6057.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 948.7 MB in the beginning and 843.8 MB in the end (delta: 104.9 MB). Peak memory consumption was 241.2 MB. Max. memory is 11.5 GB. [2018-11-28 12:52:49,775 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:52:49,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 184.85 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 932.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-28 12:52:49,776 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.91 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:52:49,776 INFO L168 Benchmark]: Boogie Preprocessor took 25.13 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:52:49,776 INFO L168 Benchmark]: RCFGBuilder took 380.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -173.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-11-28 12:52:49,776 INFO L168 Benchmark]: TraceAbstraction took 5390.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 843.8 MB in the end (delta: 261.8 MB). Peak memory consumption was 261.8 MB. Max. memory is 11.5 GB. [2018-11-28 12:52:49,776 INFO L168 Benchmark]: Witness Printer took 56.68 ms. Allocated memory is still 1.2 GB. Free memory is still 843.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:52:49,777 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 184.85 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 932.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.91 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.13 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 380.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -173.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5390.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 843.8 MB in the end (delta: 261.8 MB). Peak memory consumption was 261.8 MB. Max. memory is 11.5 GB. * Witness Printer took 56.68 ms. Allocated memory is still 1.2 GB. Free memory is still 843.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 91]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 69]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. SAFE Result, 5.3s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 4.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 157 SDtfs, 134 SDslu, 557 SDs, 0 SdLazy, 266 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 16 PreInvPairs, 19 NumberOfFragments, 55 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 114 ConstructedInterpolants, 44 QuantifiedInterpolants, 27229 SizeOfPredicates, 21 NumberOfNonLiveVariables, 331 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...