./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1230_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1230_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/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 31da98a788dd1938c78053bade42bc512d4e8954 ......................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1230_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/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 31da98a788dd1938c78053bade42bc512d4e8954 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-01 22:15:37,897 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 22:15:37,898 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 22:15:37,906 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 22:15:37,906 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 22:15:37,907 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 22:15:37,907 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 22:15:37,908 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 22:15:37,909 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 22:15:37,909 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 22:15:37,910 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 22:15:37,910 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 22:15:37,910 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 22:15:37,911 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 22:15:37,911 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 22:15:37,911 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 22:15:37,912 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 22:15:37,913 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 22:15:37,914 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 22:15:37,915 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 22:15:37,916 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 22:15:37,916 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 22:15:37,918 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 22:15:37,918 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 22:15:37,918 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 22:15:37,919 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 22:15:37,919 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 22:15:37,920 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 22:15:37,920 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 22:15:37,921 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 22:15:37,921 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 22:15:37,921 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 22:15:37,921 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 22:15:37,921 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 22:15:37,922 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 22:15:37,922 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 22:15:37,922 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-01 22:15:37,929 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 22:15:37,929 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 22:15:37,930 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 22:15:37,930 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 22:15:37,930 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 22:15:37,930 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 22:15:37,930 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 22:15:37,931 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 22:15:37,931 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 22:15:37,931 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 22:15:37,931 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 22:15:37,931 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 22:15:37,931 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 22:15:37,931 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 22:15:37,931 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 22:15:37,931 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 22:15:37,931 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 22:15:37,931 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 22:15:37,932 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 22:15:37,932 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 22:15:37,932 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 22:15:37,932 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 22:15:37,932 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 22:15:37,932 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 22:15:37,932 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 22:15:37,932 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 22:15:37,932 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 22:15:37,932 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-01 22:15:37,933 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 22:15:37,933 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-01 22:15:37,933 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_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/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 -> 31da98a788dd1938c78053bade42bc512d4e8954 [2018-12-01 22:15:37,955 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 22:15:37,963 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 22:15:37,965 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 22:15:37,966 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 22:15:37,966 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 22:15:37,967 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1230_true-unreach-call.c [2018-12-01 22:15:38,004 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/data/533c387e4/efa754bac0c24575b917e605ad7036a8/FLAGce032b91e [2018-12-01 22:15:38,429 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 22:15:38,430 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/sv-benchmarks/c/float-newlib/float_req_bl_1230_true-unreach-call.c [2018-12-01 22:15:38,433 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/data/533c387e4/efa754bac0c24575b917e605ad7036a8/FLAGce032b91e [2018-12-01 22:15:38,441 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/data/533c387e4/efa754bac0c24575b917e605ad7036a8 [2018-12-01 22:15:38,443 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 22:15:38,444 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 22:15:38,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 22:15:38,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 22:15:38,446 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 22:15:38,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:15:38" (1/1) ... [2018-12-01 22:15:38,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e9f86c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:15:38, skipping insertion in model container [2018-12-01 22:15:38,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:15:38" (1/1) ... [2018-12-01 22:15:38,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 22:15:38,462 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 22:15:38,551 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 22:15:38,553 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 22:15:38,567 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 22:15:38,579 INFO L195 MainTranslator]: Completed translation [2018-12-01 22:15:38,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:15:38 WrapperNode [2018-12-01 22:15:38,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 22:15:38,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 22:15:38,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 22:15:38,580 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 22:15:38,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:15:38" (1/1) ... [2018-12-01 22:15:38,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:15:38" (1/1) ... [2018-12-01 22:15:38,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 22:15:38,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 22:15:38,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 22:15:38,594 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 22:15:38,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:15:38" (1/1) ... [2018-12-01 22:15:38,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:15:38" (1/1) ... [2018-12-01 22:15:38,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:15:38" (1/1) ... [2018-12-01 22:15:38,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:15:38" (1/1) ... [2018-12-01 22:15:38,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:15:38" (1/1) ... [2018-12-01 22:15:38,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:15:38" (1/1) ... [2018-12-01 22:15:38,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:15:38" (1/1) ... [2018-12-01 22:15:38,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 22:15:38,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 22:15:38,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 22:15:38,642 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 22:15:38,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:15:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/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 [2018-12-01 22:15:38,674 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-12-01 22:15:38,674 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-12-01 22:15:38,674 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-12-01 22:15:38,674 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-12-01 22:15:38,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 22:15:38,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 22:15:38,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-01 22:15:38,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-01 22:15:38,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 22:15:38,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 22:15:38,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-01 22:15:38,674 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 22:15:38,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 22:15:38,675 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-12-01 22:15:38,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-12-01 22:15:38,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-01 22:15:38,804 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 22:15:38,804 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-01 22:15:38,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:15:38 BoogieIcfgContainer [2018-12-01 22:15:38,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 22:15:38,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 22:15:38,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 22:15:38,808 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 22:15:38,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 10:15:38" (1/3) ... [2018-12-01 22:15:38,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286245cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 10:15:38, skipping insertion in model container [2018-12-01 22:15:38,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:15:38" (2/3) ... [2018-12-01 22:15:38,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286245cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 10:15:38, skipping insertion in model container [2018-12-01 22:15:38,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:15:38" (3/3) ... [2018-12-01 22:15:38,810 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230_true-unreach-call.c [2018-12-01 22:15:38,819 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 22:15:38,825 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 22:15:38,838 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 22:15:38,864 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 22:15:38,865 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 22:15:38,865 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 22:15:38,865 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 22:15:38,865 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 22:15:38,865 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 22:15:38,866 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 22:15:38,866 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 22:15:38,866 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 22:15:38,880 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-12-01 22:15:38,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-01 22:15:38,885 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:15:38,886 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] [2018-12-01 22:15:38,888 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:15:38,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:15:38,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1023937428, now seen corresponding path program 1 times [2018-12-01 22:15:38,894 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 22:15:38,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 22:15:38,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:15:38,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:15:38,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:15:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:15:38,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:15:38,975 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:15:38,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-01 22:15:38,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-01 22:15:38,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-01 22:15:38,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-01 22:15:38,986 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-12-01 22:15:38,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:15:38,999 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2018-12-01 22:15:38,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-01 22:15:39,000 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-12-01 22:15:39,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:15:39,005 INFO L225 Difference]: With dead ends: 71 [2018-12-01 22:15:39,005 INFO L226 Difference]: Without dead ends: 36 [2018-12-01 22:15:39,007 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 [2018-12-01 22:15:39,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-01 22:15:39,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-01 22:15:39,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-01 22:15:39,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-12-01 22:15:39,031 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2018-12-01 22:15:39,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:15:39,031 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-12-01 22:15:39,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-01 22:15:39,031 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-12-01 22:15:39,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-01 22:15:39,032 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:15:39,032 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] [2018-12-01 22:15:39,032 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:15:39,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:15:39,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1596536717, now seen corresponding path program 1 times [2018-12-01 22:15:39,033 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 22:15:39,033 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 22:15:39,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:15:39,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:15:39,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:15:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:15:39,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:15:39,085 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:15:39,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-01 22:15:39,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-01 22:15:39,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-01 22:15:39,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 22:15:39,087 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-12-01 22:15:39,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:15:39,111 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-12-01 22:15:39,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 22:15:39,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-01 22:15:39,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:15:39,113 INFO L225 Difference]: With dead ends: 51 [2018-12-01 22:15:39,113 INFO L226 Difference]: Without dead ends: 40 [2018-12-01 22:15:39,114 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 22:15:39,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-01 22:15:39,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-01 22:15:39,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-01 22:15:39,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-01 22:15:39,120 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2018-12-01 22:15:39,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:15:39,121 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-01 22:15:39,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-01 22:15:39,121 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-01 22:15:39,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-01 22:15:39,122 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:15:39,122 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] [2018-12-01 22:15:39,122 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:15:39,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:15:39,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1459057619, now seen corresponding path program 1 times [2018-12-01 22:15:39,122 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 22:15:39,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 22:15:39,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:15:39,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:15:39,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:15:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:15:39,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:15:39,165 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:15:39,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-01 22:15:39,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-01 22:15:39,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-01 22:15:39,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 22:15:39,166 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-12-01 22:15:39,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:15:39,178 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2018-12-01 22:15:39,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 22:15:39,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-12-01 22:15:39,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:15:39,179 INFO L225 Difference]: With dead ends: 55 [2018-12-01 22:15:39,179 INFO L226 Difference]: Without dead ends: 44 [2018-12-01 22:15:39,180 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 22:15:39,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-01 22:15:39,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-12-01 22:15:39,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-01 22:15:39,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-01 22:15:39,183 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2018-12-01 22:15:39,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:15:39,183 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-01 22:15:39,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-01 22:15:39,184 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-01 22:15:39,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-01 22:15:39,184 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:15:39,184 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] [2018-12-01 22:15:39,184 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:15:39,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:15:39,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1328357868, now seen corresponding path program 1 times [2018-12-01 22:15:39,185 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 22:15:39,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 22:15:39,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:15:39,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:15:39,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:15:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:15:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:15:39,220 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-01 22:15:39,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 10:15:39 BoogieIcfgContainer [2018-12-01 22:15:39,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 22:15:39,237 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 22:15:39,237 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 22:15:39,237 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 22:15:39,238 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:15:38" (3/4) ... [2018-12-01 22:15:39,240 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-01 22:15:39,240 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 22:15:39,240 INFO L168 Benchmark]: Toolchain (without parser) took 797.06 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 957.1 MB in the beginning and 1.0 GB in the end (delta: -74.4 MB). Peak memory consumption was 32.5 MB. Max. memory is 11.5 GB. [2018-12-01 22:15:39,241 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 22:15:39,241 INFO L168 Benchmark]: CACSL2BoogieTranslator took 135.00 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 945.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-12-01 22:15:39,242 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.34 ms. Allocated memory is still 1.0 GB. Free memory was 945.3 MB in the beginning and 939.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-01 22:15:39,242 INFO L168 Benchmark]: Boogie Preprocessor took 47.90 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -162.3 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-12-01 22:15:39,242 INFO L168 Benchmark]: RCFGBuilder took 162.39 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-12-01 22:15:39,243 INFO L168 Benchmark]: TraceAbstraction took 432.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 56.4 MB). Peak memory consumption was 56.4 MB. Max. memory is 11.5 GB. [2018-12-01 22:15:39,243 INFO L168 Benchmark]: Witness Printer took 2.68 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 22:15:39,245 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 135.00 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 945.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.34 ms. Allocated memory is still 1.0 GB. Free memory was 945.3 MB in the beginning and 939.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.90 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -162.3 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 162.39 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 432.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 56.4 MB). Peak memory consumption was 56.4 MB. Max. memory is 11.5 GB. * Witness Printer took 2.68 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 59]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 54. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L55] float y = 0.0f / 0.0f; [L56] CALL, EXPR fmin_float(x, y) VAL [\old(x)=2139095043, \old(y)=2139095045] [L35] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=2139095043] [L12] __uint32_t w; VAL [\old(x)=2139095043, x=2139095043] [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (w) = gf_u.word [L20] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L22-L23] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L25-L26] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L28] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L31] return 0; VAL [\old(x)=2139095043, \result=0, w=2139095041, x=2139095043] [L35] RET, EXPR __fpclassify_float(x) VAL [\old(x)=2139095043, \old(y)=2139095045, __fpclassify_float(x)=0, x=2139095043, y=2139095045] [L35] COND TRUE __fpclassify_float(x) == 0 [L36] return y; VAL [\old(x)=2139095043, \old(y)=2139095045, \result=2139095045, x=2139095043, y=2139095045] [L56] RET, EXPR fmin_float(x, y) VAL [fmin_float(x, y)=2139095045, x=2139095043, y=2139095045] [L56] float res = fmin_float(x, y); [L58] CALL, EXPR isnan_float(res) VAL [\old(x)=2139095045] [L44] return x != x; VAL [\old(x)=2139095045, \result=0, x=2139095045] [L58] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, res=2139095045, x=2139095043, y=2139095045] [L58] COND TRUE !isnan_float(res) [L59] __VERIFIER_error() VAL [res=2139095045, x=2139095043, y=2139095045] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 129 SDtfs, 0 SDslu, 152 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2582 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-01 22:15:40,582 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 22:15:40,583 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 22:15:40,589 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 22:15:40,589 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 22:15:40,589 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 22:15:40,590 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 22:15:40,591 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 22:15:40,592 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 22:15:40,592 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 22:15:40,592 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 22:15:40,592 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 22:15:40,593 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 22:15:40,593 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 22:15:40,594 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 22:15:40,594 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 22:15:40,595 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 22:15:40,595 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 22:15:40,597 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 22:15:40,597 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 22:15:40,598 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 22:15:40,599 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 22:15:40,600 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 22:15:40,601 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 22:15:40,601 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 22:15:40,601 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 22:15:40,602 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 22:15:40,602 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 22:15:40,603 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 22:15:40,603 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 22:15:40,603 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 22:15:40,604 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 22:15:40,604 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 22:15:40,604 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 22:15:40,605 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 22:15:40,605 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 22:15:40,605 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-01 22:15:40,614 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 22:15:40,614 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 22:15:40,615 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 22:15:40,615 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 22:15:40,616 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 22:15:40,616 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 22:15:40,616 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 22:15:40,616 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 22:15:40,616 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 22:15:40,617 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 22:15:40,617 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 22:15:40,617 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 22:15:40,617 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 22:15:40,617 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 22:15:40,617 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-01 22:15:40,617 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-01 22:15:40,618 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 22:15:40,618 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 22:15:40,618 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 22:15:40,618 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 22:15:40,618 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 22:15:40,618 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 22:15:40,619 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 22:15:40,619 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 22:15:40,619 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 22:15:40,619 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 22:15:40,619 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 22:15:40,619 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 22:15:40,620 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-01 22:15:40,620 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 22:15:40,620 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-01 22:15:40,620 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-01 22:15:40,620 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_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/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 -> 31da98a788dd1938c78053bade42bc512d4e8954 [2018-12-01 22:15:40,644 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 22:15:40,651 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 22:15:40,654 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 22:15:40,655 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 22:15:40,655 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 22:15:40,655 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1230_true-unreach-call.c [2018-12-01 22:15:40,693 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/data/b96c8a72a/28ec2c03f7624547b719cc740d5feac0/FLAG37749ef52 [2018-12-01 22:15:41,107 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 22:15:41,107 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/sv-benchmarks/c/float-newlib/float_req_bl_1230_true-unreach-call.c [2018-12-01 22:15:41,111 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/data/b96c8a72a/28ec2c03f7624547b719cc740d5feac0/FLAG37749ef52 [2018-12-01 22:15:41,119 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/data/b96c8a72a/28ec2c03f7624547b719cc740d5feac0 [2018-12-01 22:15:41,121 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 22:15:41,121 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 22:15:41,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 22:15:41,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 22:15:41,124 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 22:15:41,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:15:41" (1/1) ... [2018-12-01 22:15:41,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@284ba15b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:15:41, skipping insertion in model container [2018-12-01 22:15:41,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:15:41" (1/1) ... [2018-12-01 22:15:41,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 22:15:41,140 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 22:15:41,231 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 22:15:41,234 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 22:15:41,248 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 22:15:41,262 INFO L195 MainTranslator]: Completed translation [2018-12-01 22:15:41,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:15:41 WrapperNode [2018-12-01 22:15:41,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 22:15:41,263 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 22:15:41,263 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 22:15:41,263 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 22:15:41,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:15:41" (1/1) ... [2018-12-01 22:15:41,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:15:41" (1/1) ... [2018-12-01 22:15:41,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 22:15:41,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 22:15:41,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 22:15:41,279 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 22:15:41,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:15:41" (1/1) ... [2018-12-01 22:15:41,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:15:41" (1/1) ... [2018-12-01 22:15:41,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:15:41" (1/1) ... [2018-12-01 22:15:41,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:15:41" (1/1) ... [2018-12-01 22:15:41,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:15:41" (1/1) ... [2018-12-01 22:15:41,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:15:41" (1/1) ... [2018-12-01 22:15:41,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:15:41" (1/1) ... [2018-12-01 22:15:41,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 22:15:41,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 22:15:41,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 22:15:41,298 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 22:15:41,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:15:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/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 [2018-12-01 22:15:41,367 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-12-01 22:15:41,367 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-12-01 22:15:41,367 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-12-01 22:15:41,367 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-12-01 22:15:41,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 22:15:41,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 22:15:41,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-01 22:15:41,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-01 22:15:41,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 22:15:41,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 22:15:41,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-12-01 22:15:41,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 22:15:41,368 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 22:15:41,368 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-12-01 22:15:41,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-12-01 22:15:41,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-01 22:15:41,487 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-01 22:15:41,508 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 22:15:41,508 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-01 22:15:41,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:15:41 BoogieIcfgContainer [2018-12-01 22:15:41,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 22:15:41,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 22:15:41,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 22:15:41,511 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 22:15:41,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 10:15:41" (1/3) ... [2018-12-01 22:15:41,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8c8808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 10:15:41, skipping insertion in model container [2018-12-01 22:15:41,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:15:41" (2/3) ... [2018-12-01 22:15:41,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8c8808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 10:15:41, skipping insertion in model container [2018-12-01 22:15:41,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:15:41" (3/3) ... [2018-12-01 22:15:41,513 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230_true-unreach-call.c [2018-12-01 22:15:41,519 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 22:15:41,523 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 22:15:41,531 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 22:15:41,549 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 22:15:41,549 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 22:15:41,549 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 22:15:41,549 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 22:15:41,550 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 22:15:41,550 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 22:15:41,550 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 22:15:41,550 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 22:15:41,550 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 22:15:41,559 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-12-01 22:15:41,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-01 22:15:41,562 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:15:41,563 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] [2018-12-01 22:15:41,564 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:15:41,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:15:41,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1898238320, now seen corresponding path program 1 times [2018-12-01 22:15:41,570 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:15:41,570 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/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 [2018-12-01 22:15:41,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:15:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:15:41,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:15:41,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:15:41,634 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:15:41,642 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:15:41,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-01 22:15:41,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-01 22:15:41,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-01 22:15:41,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-01 22:15:41,653 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2018-12-01 22:15:41,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:15:41,666 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2018-12-01 22:15:41,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-01 22:15:41,666 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-12-01 22:15:41,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:15:41,672 INFO L225 Difference]: With dead ends: 65 [2018-12-01 22:15:41,672 INFO L226 Difference]: Without dead ends: 33 [2018-12-01 22:15:41,674 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-01 22:15:41,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-01 22:15:41,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-01 22:15:41,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-01 22:15:41,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2018-12-01 22:15:41,698 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 24 [2018-12-01 22:15:41,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:15:41,698 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2018-12-01 22:15:41,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-01 22:15:41,698 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2018-12-01 22:15:41,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-01 22:15:41,700 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:15:41,700 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] [2018-12-01 22:15:41,700 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:15:41,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:15:41,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1313917914, now seen corresponding path program 1 times [2018-12-01 22:15:41,700 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:15:41,700 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/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 [2018-12-01 22:15:41,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:15:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:15:41,736 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:15:41,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:15:41,753 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:15:41,759 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:15:41,760 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-01 22:15:41,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-01 22:15:41,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-01 22:15:41,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 22:15:41,761 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 4 states. [2018-12-01 22:15:41,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:15:41,785 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2018-12-01 22:15:41,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 22:15:41,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-12-01 22:15:41,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:15:41,788 INFO L225 Difference]: With dead ends: 46 [2018-12-01 22:15:41,788 INFO L226 Difference]: Without dead ends: 36 [2018-12-01 22:15:41,788 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 22:15:41,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-01 22:15:41,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-01 22:15:41,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-01 22:15:41,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-01 22:15:41,793 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 25 [2018-12-01 22:15:41,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:15:41,793 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-01 22:15:41,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-01 22:15:41,793 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-01 22:15:41,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-01 22:15:41,794 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:15:41,794 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] [2018-12-01 22:15:41,794 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:15:41,794 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:15:41,794 INFO L82 PathProgramCache]: Analyzing trace with hash 659959827, now seen corresponding path program 1 times [2018-12-01 22:15:41,795 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:15:41,795 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/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 [2018-12-01 22:15:41,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:15:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:15:41,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:15:41,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:15:41,841 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:15:41,848 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:15:41,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-01 22:15:41,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-01 22:15:41,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-01 22:15:41,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 22:15:41,849 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-12-01 22:15:41,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:15:41,869 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-01 22:15:41,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 22:15:41,870 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-12-01 22:15:41,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:15:41,871 INFO L225 Difference]: With dead ends: 49 [2018-12-01 22:15:41,871 INFO L226 Difference]: Without dead ends: 39 [2018-12-01 22:15:41,871 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 22:15:41,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-01 22:15:41,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-01 22:15:41,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-01 22:15:41,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-01 22:15:41,875 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 26 [2018-12-01 22:15:41,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:15:41,875 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-01 22:15:41,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-01 22:15:41,876 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-01 22:15:41,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-01 22:15:41,876 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:15:41,876 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] [2018-12-01 22:15:41,877 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:15:41,877 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:15:41,877 INFO L82 PathProgramCache]: Analyzing trace with hash 547015626, now seen corresponding path program 1 times [2018-12-01 22:15:41,877 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:15:41,877 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/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 [2018-12-01 22:15:41,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:15:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:15:41,911 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:15:41,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:15:41,925 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:15:41,932 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:15:41,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-01 22:15:41,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-01 22:15:41,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-01 22:15:41,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 22:15:41,933 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-12-01 22:15:41,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:15:41,950 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-01 22:15:41,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 22:15:41,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-01 22:15:41,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:15:41,951 INFO L225 Difference]: With dead ends: 49 [2018-12-01 22:15:41,951 INFO L226 Difference]: Without dead ends: 39 [2018-12-01 22:15:41,952 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 22:15:41,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-01 22:15:41,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-01 22:15:41,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-01 22:15:41,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-01 22:15:41,957 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 27 [2018-12-01 22:15:41,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:15:41,957 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-01 22:15:41,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-01 22:15:41,958 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-01 22:15:41,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-01 22:15:41,958 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:15:41,958 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] [2018-12-01 22:15:41,958 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:15:41,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:15:41,959 INFO L82 PathProgramCache]: Analyzing trace with hash 167100663, now seen corresponding path program 1 times [2018-12-01 22:15:41,959 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:15:41,959 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/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 [2018-12-01 22:15:41,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:15:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:15:41,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:15:41,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:15:41,998 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:15:42,005 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:15:42,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-01 22:15:42,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-01 22:15:42,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-01 22:15:42,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 22:15:42,006 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-12-01 22:15:42,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:15:42,024 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-01 22:15:42,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 22:15:42,024 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-12-01 22:15:42,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:15:42,025 INFO L225 Difference]: With dead ends: 49 [2018-12-01 22:15:42,025 INFO L226 Difference]: Without dead ends: 39 [2018-12-01 22:15:42,025 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 22:15:42,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-01 22:15:42,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-01 22:15:42,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-01 22:15:42,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-01 22:15:42,028 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 28 [2018-12-01 22:15:42,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:15:42,028 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-01 22:15:42,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-01 22:15:42,029 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-01 22:15:42,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-01 22:15:42,029 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:15:42,029 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] [2018-12-01 22:15:42,029 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:15:42,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:15:42,030 INFO L82 PathProgramCache]: Analyzing trace with hash -126302344, now seen corresponding path program 1 times [2018-12-01 22:15:42,030 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:15:42,030 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-12-01 22:15:42,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:15:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:15:42,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:15:42,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:15:42,155 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:15:42,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:15:42,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-01 22:15:42,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-01 22:15:42,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-01 22:15:42,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-01 22:15:42,163 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 9 states. [2018-12-01 22:15:42,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:15:42,354 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-12-01 22:15:42,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-01 22:15:42,354 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-12-01 22:15:42,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:15:42,355 INFO L225 Difference]: With dead ends: 43 [2018-12-01 22:15:42,355 INFO L226 Difference]: Without dead ends: 36 [2018-12-01 22:15:42,355 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-12-01 22:15:42,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-01 22:15:42,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-12-01 22:15:42,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-01 22:15:42,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2018-12-01 22:15:42,360 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 28 [2018-12-01 22:15:42,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:15:42,360 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2018-12-01 22:15:42,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-01 22:15:42,360 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2018-12-01 22:15:42,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-01 22:15:42,361 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:15:42,361 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:15:42,362 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:15:42,362 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:15:42,362 INFO L82 PathProgramCache]: Analyzing trace with hash -114502674, now seen corresponding path program 1 times [2018-12-01 22:15:42,362 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:15:42,362 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-12-01 22:15:42,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:15:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:15:42,402 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:15:42,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-01 22:15:42,423 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:15:42,434 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:15:42,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-01 22:15:42,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-01 22:15:42,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-01 22:15:42,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 22:15:42,435 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 4 states. [2018-12-01 22:15:42,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:15:42,447 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-12-01 22:15:42,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 22:15:42,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-12-01 22:15:42,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:15:42,448 INFO L225 Difference]: With dead ends: 46 [2018-12-01 22:15:42,448 INFO L226 Difference]: Without dead ends: 36 [2018-12-01 22:15:42,449 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 22:15:42,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-01 22:15:42,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-01 22:15:42,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-01 22:15:42,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-12-01 22:15:42,452 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 33 [2018-12-01 22:15:42,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:15:42,453 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-12-01 22:15:42,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-01 22:15:42,453 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-12-01 22:15:42,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-01 22:15:42,453 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:15:42,454 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:15:42,454 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:15:42,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:15:42,454 INFO L82 PathProgramCache]: Analyzing trace with hash -957719579, now seen corresponding path program 1 times [2018-12-01 22:15:42,454 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:15:42,454 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-12-01 22:15:42,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:15:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:15:42,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:15:42,500 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-01 22:15:42,500 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:15:42,507 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:15:42,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-01 22:15:42,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-01 22:15:42,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-01 22:15:42,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 22:15:42,508 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-12-01 22:15:42,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:15:42,519 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2018-12-01 22:15:42,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 22:15:42,520 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-12-01 22:15:42,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:15:42,520 INFO L225 Difference]: With dead ends: 49 [2018-12-01 22:15:42,520 INFO L226 Difference]: Without dead ends: 39 [2018-12-01 22:15:42,521 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 22:15:42,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-01 22:15:42,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-01 22:15:42,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-01 22:15:42,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-12-01 22:15:42,525 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 34 [2018-12-01 22:15:42,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:15:42,525 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-12-01 22:15:42,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-01 22:15:42,526 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-12-01 22:15:42,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-01 22:15:42,526 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:15:42,527 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:15:42,527 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:15:42,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:15:42,527 INFO L82 PathProgramCache]: Analyzing trace with hash -2106425557, now seen corresponding path program 1 times [2018-12-01 22:15:42,527 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:15:42,527 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-12-01 22:15:42,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:15:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:15:42,565 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:15:42,655 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-01 22:15:42,655 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:15:42,662 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:15:42,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-12-01 22:15:42,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-01 22:15:42,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-01 22:15:42,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-12-01 22:15:42,662 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 10 states. [2018-12-01 22:15:42,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:15:42,896 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2018-12-01 22:15:42,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-01 22:15:42,897 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-12-01 22:15:42,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:15:42,897 INFO L225 Difference]: With dead ends: 44 [2018-12-01 22:15:42,897 INFO L226 Difference]: Without dead ends: 36 [2018-12-01 22:15:42,898 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-12-01 22:15:42,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-01 22:15:42,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-01 22:15:42,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-01 22:15:42,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-12-01 22:15:42,900 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 35 [2018-12-01 22:15:42,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:15:42,901 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-12-01 22:15:42,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-01 22:15:42,901 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-12-01 22:15:42,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-01 22:15:42,901 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:15:42,901 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:15:42,901 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:15:42,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:15:42,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1487477161, now seen corresponding path program 1 times [2018-12-01 22:15:42,902 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:15:42,902 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-12-01 22:15:42,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:15:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:15:42,940 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:15:43,001 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-01 22:15:43,002 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:15:43,008 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:15:43,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-01 22:15:43,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-01 22:15:43,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-01 22:15:43,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-01 22:15:43,009 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2018-12-01 22:15:43,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:15:43,088 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2018-12-01 22:15:43,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-01 22:15:43,089 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-12-01 22:15:43,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:15:43,090 INFO L225 Difference]: With dead ends: 46 [2018-12-01 22:15:43,090 INFO L226 Difference]: Without dead ends: 33 [2018-12-01 22:15:43,090 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-01 22:15:43,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-01 22:15:43,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-01 22:15:43,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-01 22:15:43,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-01 22:15:43,092 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-12-01 22:15:43,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:15:43,092 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-01 22:15:43,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-01 22:15:43,092 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-01 22:15:43,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-01 22:15:43,093 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:15:43,093 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:15:43,093 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:15:43,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:15:43,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1793715410, now seen corresponding path program 1 times [2018-12-01 22:15:43,093 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:15:43,093 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-12-01 22:15:43,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:15:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:15:43,126 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:15:43,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-01 22:15:43,133 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:15:43,139 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:15:43,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-01 22:15:43,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-01 22:15:43,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-01 22:15:43,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 22:15:43,140 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-12-01 22:15:43,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:15:43,147 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-12-01 22:15:43,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 22:15:43,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-12-01 22:15:43,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:15:43,148 INFO L225 Difference]: With dead ends: 46 [2018-12-01 22:15:43,148 INFO L226 Difference]: Without dead ends: 35 [2018-12-01 22:15:43,148 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 22:15:43,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-01 22:15:43,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-12-01 22:15:43,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-01 22:15:43,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-01 22:15:43,150 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-12-01 22:15:43,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:15:43,150 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-01 22:15:43,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-01 22:15:43,151 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-01 22:15:43,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-01 22:15:43,151 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:15:43,151 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:15:43,151 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:15:43,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:15:43,151 INFO L82 PathProgramCache]: Analyzing trace with hash 15242121, now seen corresponding path program 1 times [2018-12-01 22:15:43,152 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:15:43,152 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-12-01 22:15:43,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:15:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:15:43,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:15:43,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-01 22:15:43,196 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:15:43,203 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:15:43,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-01 22:15:43,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-01 22:15:43,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-01 22:15:43,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 22:15:43,203 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-12-01 22:15:43,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:15:43,212 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-12-01 22:15:43,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 22:15:43,212 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-12-01 22:15:43,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:15:43,213 INFO L225 Difference]: With dead ends: 46 [2018-12-01 22:15:43,213 INFO L226 Difference]: Without dead ends: 35 [2018-12-01 22:15:43,213 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 22:15:43,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-01 22:15:43,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-12-01 22:15:43,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-01 22:15:43,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-01 22:15:43,216 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 36 [2018-12-01 22:15:43,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:15:43,216 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-01 22:15:43,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-01 22:15:43,216 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-01 22:15:43,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-01 22:15:43,216 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:15:43,217 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:15:43,217 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:15:43,217 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:15:43,217 INFO L82 PathProgramCache]: Analyzing trace with hash -278160886, now seen corresponding path program 1 times [2018-12-01 22:15:43,217 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 22:15:43,217 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-12-01 22:15:43,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:15:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:15:43,266 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:15:43,346 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-01 22:15:43,346 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:15:43,352 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:15:43,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-01 22:15:43,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-01 22:15:43,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-01 22:15:43,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-01 22:15:43,353 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 9 states. [2018-12-01 22:15:43,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:15:43,482 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-12-01 22:15:43,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-01 22:15:43,482 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-12-01 22:15:43,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:15:43,482 INFO L225 Difference]: With dead ends: 33 [2018-12-01 22:15:43,482 INFO L226 Difference]: Without dead ends: 0 [2018-12-01 22:15:43,482 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-12-01 22:15:43,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-01 22:15:43,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-01 22:15:43,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-01 22:15:43,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-01 22:15:43,483 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2018-12-01 22:15:43,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:15:43,483 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 22:15:43,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-01 22:15:43,483 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-01 22:15:43,483 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-01 22:15:43,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-01 22:15:43,563 INFO L448 ceAbstractionStarter]: For program point isnan_floatFINAL(line 44) no Hoare annotation was computed. [2018-12-01 22:15:43,563 INFO L451 ceAbstractionStarter]: At program point isnan_floatENTRY(line 44) the Hoare annotation is: true [2018-12-01 22:15:43,563 INFO L448 ceAbstractionStarter]: For program point isnan_floatEXIT(line 44) no Hoare annotation was computed. [2018-12-01 22:15:43,563 INFO L451 ceAbstractionStarter]: At program point fmin_floatENTRY(lines 34 41) the Hoare annotation is: true [2018-12-01 22:15:43,563 INFO L448 ceAbstractionStarter]: For program point fmin_floatEXIT(lines 34 41) no Hoare annotation was computed. [2018-12-01 22:15:43,563 INFO L448 ceAbstractionStarter]: For program point fmin_floatFINAL(lines 34 41) no Hoare annotation was computed. [2018-12-01 22:15:43,563 INFO L448 ceAbstractionStarter]: For program point L40(line 40) no Hoare annotation was computed. [2018-12-01 22:15:43,564 INFO L448 ceAbstractionStarter]: For program point L40-2(line 40) no Hoare annotation was computed. [2018-12-01 22:15:43,564 INFO L444 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: (and (= fmin_float_~x |fmin_float_#in~x|) (= fmin_float_~y |fmin_float_#in~y|)) [2018-12-01 22:15:43,564 INFO L448 ceAbstractionStarter]: For program point L37-1(lines 37 38) no Hoare annotation was computed. [2018-12-01 22:15:43,564 INFO L444 ceAbstractionStarter]: At program point L35(line 35) the Hoare annotation is: (and (= fmin_float_~x |fmin_float_#in~x|) (= fmin_float_~y |fmin_float_#in~y|)) [2018-12-01 22:15:43,564 INFO L448 ceAbstractionStarter]: For program point L35-1(lines 35 36) no Hoare annotation was computed. [2018-12-01 22:15:43,564 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-01 22:15:43,564 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-01 22:15:43,564 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-01 22:15:43,564 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-01 22:15:43,564 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-01 22:15:43,564 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-01 22:15:43,564 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-01 22:15:43,564 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 46 64) the Hoare annotation is: true [2018-12-01 22:15:43,564 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 46 64) no Hoare annotation was computed. [2018-12-01 22:15:43,564 INFO L448 ceAbstractionStarter]: For program point L59(line 59) no Hoare annotation was computed. [2018-12-01 22:15:43,564 INFO L444 ceAbstractionStarter]: At program point L58(line 58) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (and (= main_~res~0 .cse0) (= main_~y~0 .cse0))) [2018-12-01 22:15:43,564 INFO L448 ceAbstractionStarter]: For program point L58-1(lines 58 61) no Hoare annotation was computed. [2018-12-01 22:15:43,564 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 46 64) no Hoare annotation was computed. [2018-12-01 22:15:43,564 INFO L444 ceAbstractionStarter]: At program point L56(line 56) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (and (= main_~y~0 .cse0) (= main_~x~0 .cse0))) [2018-12-01 22:15:43,565 INFO L448 ceAbstractionStarter]: For program point L56-1(line 56) no Hoare annotation was computed. [2018-12-01 22:15:43,565 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 59) no Hoare annotation was computed. [2018-12-01 22:15:43,565 INFO L448 ceAbstractionStarter]: For program point __fpclassify_floatFINAL(lines 11 32) no Hoare annotation was computed. [2018-12-01 22:15:43,565 INFO L448 ceAbstractionStarter]: For program point L25(lines 25 31) no Hoare annotation was computed. [2018-12-01 22:15:43,565 INFO L448 ceAbstractionStarter]: For program point L28(lines 28 31) no Hoare annotation was computed. [2018-12-01 22:15:43,565 INFO L448 ceAbstractionStarter]: For program point L22(lines 22 31) no Hoare annotation was computed. [2018-12-01 22:15:43,565 INFO L448 ceAbstractionStarter]: For program point L14-1(lines 14 18) no Hoare annotation was computed. [2018-12-01 22:15:43,565 INFO L451 ceAbstractionStarter]: At program point __fpclassify_floatENTRY(lines 11 32) the Hoare annotation is: true [2018-12-01 22:15:43,565 INFO L451 ceAbstractionStarter]: At program point L14-2(lines 14 18) the Hoare annotation is: true [2018-12-01 22:15:43,565 INFO L448 ceAbstractionStarter]: For program point L14-3(lines 11 32) no Hoare annotation was computed. [2018-12-01 22:15:43,565 INFO L448 ceAbstractionStarter]: For program point __fpclassify_floatEXIT(lines 11 32) no Hoare annotation was computed. [2018-12-01 22:15:43,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 10:15:43 BoogieIcfgContainer [2018-12-01 22:15:43,569 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 22:15:43,569 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 22:15:43,569 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 22:15:43,569 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 22:15:43,569 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:15:41" (3/4) ... [2018-12-01 22:15:43,571 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-01 22:15:43,575 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-12-01 22:15:43,575 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_float [2018-12-01 22:15:43,576 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-01 22:15:43,576 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-01 22:15:43,576 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-12-01 22:15:43,579 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-12-01 22:15:43,580 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-01 22:15:43,580 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-01 22:15:43,611 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_105b19a4-cf2e-4b7c-85a7-5d7ad74e17da/bin-2019/uautomizer/witness.graphml [2018-12-01 22:15:43,611 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 22:15:43,612 INFO L168 Benchmark]: Toolchain (without parser) took 2490.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 216.0 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -252.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 22:15:43,613 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 22:15:43,613 INFO L168 Benchmark]: CACSL2BoogieTranslator took 140.55 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 932.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-12-01 22:15:43,613 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.81 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-01 22:15:43,614 INFO L168 Benchmark]: Boogie Preprocessor took 18.82 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 22:15:43,614 INFO L168 Benchmark]: RCFGBuilder took 210.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -188.8 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-12-01 22:15:43,614 INFO L168 Benchmark]: TraceAbstraction took 2059.97 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 69.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -87.8 MB). Peak memory consumption was 313.9 MB. Max. memory is 11.5 GB. [2018-12-01 22:15:43,614 INFO L168 Benchmark]: Witness Printer took 42.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2018-12-01 22:15:43,616 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 140.55 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 932.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.81 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.82 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 210.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -188.8 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2059.97 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 69.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -87.8 MB). Peak memory consumption was 313.9 MB. Max. memory is 11.5 GB. * Witness Printer took 42.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 59]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. SAFE Result, 2.0s OverallTime, 13 OverallIterations, 2 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 497 SDtfs, 31 SDslu, 1313 SDs, 0 SdLazy, 224 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 19 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 28 PreInvPairs, 33 NumberOfFragments, 48 HoareAnnotationTreeSize, 28 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 402 NumberOfCodeBlocks, 402 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 389 ConstructedInterpolants, 3 QuantifiedInterpolants, 21389 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1091 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 42/42 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...