./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/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 36a0a55241cede481b157c1ab9f348d708a5b166 ............................................................................................................................................................................................................................................................................................................................................................................................... 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_e4176df9-8862-4d6c-81bd-61dabec8704f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/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 36a0a55241cede481b157c1ab9f348d708a5b166 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:25:17,886 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:25:17,888 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:25:17,902 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:25:17,902 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:25:17,905 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:25:17,906 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:25:17,908 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:25:17,910 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:25:17,911 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:25:17,912 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:25:17,912 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:25:17,913 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:25:17,913 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:25:17,914 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:25:17,915 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:25:17,916 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:25:17,917 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:25:17,919 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:25:17,920 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:25:17,921 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:25:17,922 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:25:17,924 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:25:17,924 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:25:17,924 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:25:17,925 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:25:17,926 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:25:17,927 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:25:17,928 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:25:17,929 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:25:17,929 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:25:17,929 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 22:25:17,930 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 22:25:17,930 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 22:25:17,931 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 22:25:17,931 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 22:25:17,931 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-26 22:25:17,943 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:25:17,944 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:25:17,944 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:25:17,944 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:25:17,945 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:25:17,945 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:25:17,945 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:25:17,946 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:25:17,946 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 22:25:17,946 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:25:17,946 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 22:25:17,946 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:25:17,946 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:25:17,947 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:25:17,947 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:25:17,947 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 22:25:17,947 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:25:17,947 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:25:17,947 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:25:17,948 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:25:17,948 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:25:17,948 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:25:17,948 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:25:17,948 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:25:17,949 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:25:17,949 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:25:17,949 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 22:25:17,949 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:25:17,949 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:25:17,949 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_e4176df9-8862-4d6c-81bd-61dabec8704f/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 -> 36a0a55241cede481b157c1ab9f348d708a5b166 [2018-10-26 22:25:17,981 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:25:17,994 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:25:18,000 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:25:18,002 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:25:18,003 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:25:18,004 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-10-26 22:25:18,065 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/bin-2019/uautomizer/data/26e3952a0/e20cb08763e1475994edd583a86179e4/FLAG9f4d5055f [2018-10-26 22:25:18,453 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:25:18,453 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-10-26 22:25:18,458 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/bin-2019/uautomizer/data/26e3952a0/e20cb08763e1475994edd583a86179e4/FLAG9f4d5055f [2018-10-26 22:25:18,470 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/bin-2019/uautomizer/data/26e3952a0/e20cb08763e1475994edd583a86179e4 [2018-10-26 22:25:18,473 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:25:18,474 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:25:18,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:25:18,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:25:18,479 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:25:18,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:25:18" (1/1) ... [2018-10-26 22:25:18,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cdc003b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:25:18, skipping insertion in model container [2018-10-26 22:25:18,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:25:18" (1/1) ... [2018-10-26 22:25:18,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:25:18,508 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:25:18,637 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:25:18,639 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:25:18,657 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:25:18,673 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:25:18,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:25:18 WrapperNode [2018-10-26 22:25:18,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:25:18,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:25:18,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:25:18,674 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:25:18,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:25:18" (1/1) ... [2018-10-26 22:25:18,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:25:18" (1/1) ... [2018-10-26 22:25:18,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:25:18" (1/1) ... [2018-10-26 22:25:18,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:25:18" (1/1) ... [2018-10-26 22:25:18,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:25:18" (1/1) ... [2018-10-26 22:25:18,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:25:18" (1/1) ... [2018-10-26 22:25:18,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:25:18" (1/1) ... [2018-10-26 22:25:18,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:25:18,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:25:18,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:25:18,709 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:25:18,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:25:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/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 [2018-10-26 22:25:18,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 22:25:18,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:25:18,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-10-26 22:25:18,823 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-10-26 22:25:18,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-10-26 22:25:18,823 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 22:25:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 22:25:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-10-26 22:25:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-10-26 22:25:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-26 22:25:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-10-26 22:25:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-26 22:25:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-26 22:25:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-10-26 22:25:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-10-26 22:25:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 22:25:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 22:25:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:25:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-10-26 22:25:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-10-26 22:25:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-10-26 22:25:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-10-26 22:25:19,378 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:25:19,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:25:19 BoogieIcfgContainer [2018-10-26 22:25:19,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:25:19,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:25:19,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:25:19,383 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:25:19,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:25:18" (1/3) ... [2018-10-26 22:25:19,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34948c4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:25:19, skipping insertion in model container [2018-10-26 22:25:19,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:25:18" (2/3) ... [2018-10-26 22:25:19,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34948c4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:25:19, skipping insertion in model container [2018-10-26 22:25:19,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:25:19" (3/3) ... [2018-10-26 22:25:19,388 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b_false-unreach-call.c [2018-10-26 22:25:19,399 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:25:19,407 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:25:19,425 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:25:19,464 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:25:19,465 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:25:19,465 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:25:19,465 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:25:19,466 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:25:19,466 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:25:19,466 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:25:19,466 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:25:19,466 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:25:19,490 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2018-10-26 22:25:19,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-26 22:25:19,498 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:25:19,499 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:25:19,501 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:25:19,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:25:19,512 INFO L82 PathProgramCache]: Analyzing trace with hash 969493283, now seen corresponding path program 1 times [2018-10-26 22:25:19,514 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:25:19,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:25:19,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:25:19,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:25:19,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:25:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:25:19,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:25:19,675 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:25:19,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 22:25:19,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 22:25:19,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 22:25:19,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:25:19,697 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2018-10-26 22:25:19,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:25:19,737 INFO L93 Difference]: Finished difference Result 111 states and 139 transitions. [2018-10-26 22:25:19,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 22:25:19,738 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-10-26 22:25:19,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:25:19,750 INFO L225 Difference]: With dead ends: 111 [2018-10-26 22:25:19,750 INFO L226 Difference]: Without dead ends: 56 [2018-10-26 22:25:19,754 INFO L605 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 [2018-10-26 22:25:19,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-26 22:25:19,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-26 22:25:19,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-26 22:25:19,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2018-10-26 22:25:19,798 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 22 [2018-10-26 22:25:19,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:25:19,799 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2018-10-26 22:25:19,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 22:25:19,799 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2018-10-26 22:25:19,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-26 22:25:19,801 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:25:19,801 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:25:19,801 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:25:19,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:25:19,802 INFO L82 PathProgramCache]: Analyzing trace with hash -228670553, now seen corresponding path program 1 times [2018-10-26 22:25:19,802 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:25:19,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:25:19,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:25:19,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:25:19,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:25:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:25:19,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:25:19,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:25:19,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:25:19,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:25:19,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:25:19,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:25:19,927 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 4 states. [2018-10-26 22:25:19,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:25:19,997 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2018-10-26 22:25:19,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:25:19,998 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-10-26 22:25:19,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:25:20,001 INFO L225 Difference]: With dead ends: 83 [2018-10-26 22:25:20,002 INFO L226 Difference]: Without dead ends: 60 [2018-10-26 22:25:20,003 INFO L605 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 [2018-10-26 22:25:20,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-26 22:25:20,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-26 22:25:20,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-26 22:25:20,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2018-10-26 22:25:20,015 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 31 [2018-10-26 22:25:20,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:25:20,016 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2018-10-26 22:25:20,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:25:20,016 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2018-10-26 22:25:20,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-26 22:25:20,018 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:25:20,018 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:25:20,019 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:25:20,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:25:20,019 INFO L82 PathProgramCache]: Analyzing trace with hash 738637230, now seen corresponding path program 1 times [2018-10-26 22:25:20,019 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:25:20,020 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:25:20,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:25:20,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:25:20,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:25:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:25:20,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:25:20,215 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:25:20,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:25:20,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:25:20,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:25:20,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:25:20,216 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand 4 states. [2018-10-26 22:25:20,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:25:20,299 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2018-10-26 22:25:20,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:25:20,309 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-10-26 22:25:20,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:25:20,311 INFO L225 Difference]: With dead ends: 87 [2018-10-26 22:25:20,311 INFO L226 Difference]: Without dead ends: 64 [2018-10-26 22:25:20,311 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:25:20,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-26 22:25:20,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2018-10-26 22:25:20,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-26 22:25:20,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2018-10-26 22:25:20,322 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 34 [2018-10-26 22:25:20,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:25:20,323 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2018-10-26 22:25:20,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:25:20,323 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2018-10-26 22:25:20,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-26 22:25:20,324 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:25:20,324 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:25:20,324 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:25:20,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:25:20,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1058314129, now seen corresponding path program 1 times [2018-10-26 22:25:20,325 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:25:20,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:25:20,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:25:20,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:25:20,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:25:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:25:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:25:20,390 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 22:25:20,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:25:20 BoogieIcfgContainer [2018-10-26 22:25:20,423 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:25:20,424 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 22:25:20,424 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 22:25:20,424 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 22:25:20,425 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:25:19" (3/4) ... [2018-10-26 22:25:20,428 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-26 22:25:20,428 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 22:25:20,429 INFO L168 Benchmark]: Toolchain (without parser) took 1955.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 186.1 MB). Free memory was 958.2 MB in the beginning and 1.1 GB in the end (delta: -151.1 MB). Peak memory consumption was 35.1 MB. Max. memory is 11.5 GB. [2018-10-26 22:25:20,430 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:25:20,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 198.77 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 947.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 22:25:20,431 INFO L168 Benchmark]: Boogie Preprocessor took 34.95 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 22:25:20,432 INFO L168 Benchmark]: RCFGBuilder took 669.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 186.1 MB). Free memory was 944.8 MB in the beginning and 1.2 GB in the end (delta: -210.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2018-10-26 22:25:20,433 INFO L168 Benchmark]: TraceAbstraction took 1044.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 11.5 GB. [2018-10-26 22:25:20,434 INFO L168 Benchmark]: Witness Printer took 4.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:25:20,436 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 198.77 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 947.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.95 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 669.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 186.1 MB). Free memory was 944.8 MB in the beginning and 1.2 GB in the end (delta: -210.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1044.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 64. Possible FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; VAL [y=0] [L66] CALL, EXPR fmin_float(x, y) VAL [\old(x)=2139095043, \old(y)=0] [L36] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=2139095043] [L13] __uint32_t w; VAL [\old(x)=2139095043, x=2139095043] [L16] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=2139095043, gf_u={2139095046:0}, x=2139095043] [L17] FCALL gf_u.value = (x) VAL [\old(x)=2139095043, gf_u={2139095046:0}, x=2139095043] [L18] EXPR, FCALL gf_u.word VAL [\old(x)=2139095043, gf_u={2139095046:0}, gf_u.word=2139095041, x=2139095043] [L18] (w) = gf_u.word VAL [(w) = gf_u.word=2139095044, \old(x)=2139095043, gf_u={2139095046:0}, gf_u.word=2139095041, w=2139095041, x=2139095043] [L19] COND FALSE !(0) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] RET return 0; VAL [\old(x)=2139095043, \result=0, w=2139095041, x=2139095043] [L36] EXPR __fpclassify_float(x) VAL [\old(x)=2139095043, \old(y)=0, __fpclassify_float(x)=0, x=2139095043, y=0] [L36] COND TRUE __fpclassify_float(x) == 0 [L37] RET return y; VAL [\old(x)=2139095043, \old(y)=0, \result=0, x=2139095043, y=0] [L66] EXPR fmin_float(x, y) VAL [fmin_float(x, y)=0, x=2139095043, y=0] [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=0, res == -0.0f && __signbit_float(res) == 1=0, x=2139095043, y=0] [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() VAL [res=0, x=2139095043, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 60 locations, 1 error locations. UNSAFE Result, 0.9s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 197 SDtfs, 0 SDslu, 242 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 2934 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 0.1.23-1dbac8b [2018-10-26 22:25:22,470 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:25:22,471 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:25:22,481 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:25:22,481 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:25:22,482 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:25:22,482 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:25:22,483 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:25:22,484 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:25:22,493 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:25:22,495 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:25:22,495 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:25:22,496 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:25:22,496 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:25:22,497 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:25:22,498 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:25:22,499 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:25:22,500 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:25:22,503 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:25:22,504 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:25:22,505 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:25:22,506 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:25:22,509 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:25:22,509 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:25:22,509 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:25:22,510 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:25:22,511 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:25:22,512 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:25:22,512 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:25:22,514 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:25:22,514 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:25:22,515 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 22:25:22,515 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 22:25:22,515 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 22:25:22,516 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 22:25:22,517 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 22:25:22,518 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-10-26 22:25:22,531 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:25:22,531 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:25:22,532 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:25:22,532 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:25:22,532 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:25:22,533 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:25:22,533 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:25:22,534 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:25:22,534 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 22:25:22,534 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 22:25:22,534 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:25:22,534 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:25:22,535 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:25:22,535 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:25:22,535 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 22:25:22,535 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 22:25:22,535 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 22:25:22,536 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:25:22,536 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:25:22,536 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:25:22,536 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:25:22,536 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:25:22,536 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:25:22,537 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:25:22,539 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:25:22,539 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:25:22,539 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:25:22,540 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-10-26 22:25:22,540 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:25:22,540 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 22:25:22,540 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 22:25:22,540 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_e4176df9-8862-4d6c-81bd-61dabec8704f/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 -> 36a0a55241cede481b157c1ab9f348d708a5b166 [2018-10-26 22:25:22,578 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:25:22,589 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:25:22,592 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:25:22,594 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:25:22,595 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:25:22,595 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-10-26 22:25:22,664 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/bin-2019/uautomizer/data/bd40b0ef1/71424cb0c68943299880b54f00e36742/FLAGa110d5a7c [2018-10-26 22:25:23,020 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:25:23,021 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-10-26 22:25:23,026 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/bin-2019/uautomizer/data/bd40b0ef1/71424cb0c68943299880b54f00e36742/FLAGa110d5a7c [2018-10-26 22:25:23,039 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/bin-2019/uautomizer/data/bd40b0ef1/71424cb0c68943299880b54f00e36742 [2018-10-26 22:25:23,042 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:25:23,043 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:25:23,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:25:23,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:25:23,049 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:25:23,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:25:23" (1/1) ... [2018-10-26 22:25:23,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@205a6579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:25:23, skipping insertion in model container [2018-10-26 22:25:23,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:25:23" (1/1) ... [2018-10-26 22:25:23,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:25:23,084 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:25:23,250 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:25:23,255 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:25:23,285 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:25:23,321 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:25:23,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:25:23 WrapperNode [2018-10-26 22:25:23,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:25:23,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:25:23,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:25:23,322 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:25:23,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:25:23" (1/1) ... [2018-10-26 22:25:23,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:25:23" (1/1) ... [2018-10-26 22:25:23,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:25:23" (1/1) ... [2018-10-26 22:25:23,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:25:23" (1/1) ... [2018-10-26 22:25:23,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:25:23" (1/1) ... [2018-10-26 22:25:23,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:25:23" (1/1) ... [2018-10-26 22:25:23,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:25:23" (1/1) ... [2018-10-26 22:25:23,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:25:23,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:25:23,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:25:23,389 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:25:23,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:25:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/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 [2018-10-26 22:25:23,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 22:25:23,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:25:23,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-10-26 22:25:23,450 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-10-26 22:25:23,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-10-26 22:25:23,450 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 22:25:23,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 22:25:23,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-10-26 22:25:23,451 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-10-26 22:25:23,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-26 22:25:23,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-10-26 22:25:23,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-10-26 22:25:23,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-26 22:25:23,452 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-10-26 22:25:23,452 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-10-26 22:25:23,452 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 22:25:23,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 22:25:23,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:25:23,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-10-26 22:25:23,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-10-26 22:25:23,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-10-26 22:25:23,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-10-26 22:25:23,863 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 22:25:23,885 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 22:25:23,998 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 22:25:24,014 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 22:25:24,024 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:25:24,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:25:24 BoogieIcfgContainer [2018-10-26 22:25:24,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:25:24,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:25:24,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:25:24,029 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:25:24,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:25:23" (1/3) ... [2018-10-26 22:25:24,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e4de3bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:25:24, skipping insertion in model container [2018-10-26 22:25:24,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:25:23" (2/3) ... [2018-10-26 22:25:24,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e4de3bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:25:24, skipping insertion in model container [2018-10-26 22:25:24,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:25:24" (3/3) ... [2018-10-26 22:25:24,034 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b_false-unreach-call.c [2018-10-26 22:25:24,044 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:25:24,051 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:25:24,067 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:25:24,097 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:25:24,098 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:25:24,098 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:25:24,098 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:25:24,098 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:25:24,098 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:25:24,098 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:25:24,098 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:25:24,099 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:25:24,118 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2018-10-26 22:25:24,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-26 22:25:24,125 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:25:24,126 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:25:24,128 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:25:24,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:25:24,135 INFO L82 PathProgramCache]: Analyzing trace with hash 430535463, now seen corresponding path program 1 times [2018-10-26 22:25:24,140 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 22:25:24,140 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 22:25:24,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-10-26 22:25:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:25:24,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:25:24,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:25:24,267 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 22:25:24,279 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:25:24,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 22:25:24,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 22:25:24,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 22:25:24,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:25:24,293 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 2 states. [2018-10-26 22:25:24,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:25:24,316 INFO L93 Difference]: Finished difference Result 107 states and 135 transitions. [2018-10-26 22:25:24,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 22:25:24,318 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-10-26 22:25:24,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:25:24,328 INFO L225 Difference]: With dead ends: 107 [2018-10-26 22:25:24,328 INFO L226 Difference]: Without dead ends: 54 [2018-10-26 22:25:24,332 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:25:24,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-26 22:25:24,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-26 22:25:24,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-26 22:25:24,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2018-10-26 22:25:24,376 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 21 [2018-10-26 22:25:24,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:25:24,376 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2018-10-26 22:25:24,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 22:25:24,378 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2018-10-26 22:25:24,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-26 22:25:24,380 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:25:24,380 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:25:24,381 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:25:24,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:25:24,381 INFO L82 PathProgramCache]: Analyzing trace with hash 973147503, now seen corresponding path program 1 times [2018-10-26 22:25:24,381 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 22:25:24,382 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/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 [2018-10-26 22:25:24,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:25:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:25:24,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:25:24,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:25:24,543 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 22:25:24,560 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:25:24,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:25:24,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:25:24,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:25:24,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:25:24,562 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 4 states. [2018-10-26 22:25:24,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:25:24,620 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2018-10-26 22:25:24,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:25:24,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-10-26 22:25:24,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:25:24,624 INFO L225 Difference]: With dead ends: 80 [2018-10-26 22:25:24,625 INFO L226 Difference]: Without dead ends: 57 [2018-10-26 22:25:24,626 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:25:24,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-26 22:25:24,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-26 22:25:24,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-26 22:25:24,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2018-10-26 22:25:24,639 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 30 [2018-10-26 22:25:24,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:25:24,640 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2018-10-26 22:25:24,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:25:24,640 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2018-10-26 22:25:24,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-26 22:25:24,641 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:25:24,641 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:25:24,641 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:25:24,642 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:25:24,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1744180640, now seen corresponding path program 1 times [2018-10-26 22:25:24,642 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 22:25:24,643 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 22:25:24,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-10-26 22:25:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:25:24,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:25:24,931 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 22:25:24,938 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 22:25:24,938 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 22:25:24,941 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 22:25:24,957 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 22:25:24,958 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-10-26 22:25:25,010 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-10-26 22:25:25,014 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-10-26 22:25:25,014 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 22:25:25,016 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 22:25:25,019 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 22:25:25,019 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-10-26 22:25:25,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:25:25,430 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 22:25:25,449 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:25:25,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-10-26 22:25:25,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 22:25:25,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 22:25:25,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-10-26 22:25:25,451 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 10 states. [2018-10-26 22:25:26,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:25:26,655 INFO L93 Difference]: Finished difference Result 84 states and 97 transitions. [2018-10-26 22:25:26,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-26 22:25:26,656 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2018-10-26 22:25:26,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:25:26,658 INFO L225 Difference]: With dead ends: 84 [2018-10-26 22:25:26,658 INFO L226 Difference]: Without dead ends: 56 [2018-10-26 22:25:26,659 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-10-26 22:25:26,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-26 22:25:26,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-26 22:25:26,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-26 22:25:26,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2018-10-26 22:25:26,672 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 31 [2018-10-26 22:25:26,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:25:26,672 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2018-10-26 22:25:26,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 22:25:26,672 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2018-10-26 22:25:26,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-26 22:25:26,677 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:25:26,677 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:25:26,678 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:25:26,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:25:26,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1143554021, now seen corresponding path program 1 times [2018-10-26 22:25:26,679 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 22:25:26,679 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/bin-2019/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 22:25:26,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-10-26 22:25:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:25:26,758 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:25:26,850 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-26 22:25:26,852 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 22:25:26,860 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:25:26,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:25:26,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:25:26,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:25:26,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:25:26,861 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 4 states. [2018-10-26 22:25:26,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:25:26,884 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2018-10-26 22:25:26,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:25:26,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-10-26 22:25:26,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:25:26,885 INFO L225 Difference]: With dead ends: 80 [2018-10-26 22:25:26,885 INFO L226 Difference]: Without dead ends: 57 [2018-10-26 22:25:26,886 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:25:26,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-26 22:25:26,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-26 22:25:26,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-26 22:25:26,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2018-10-26 22:25:26,894 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 46 [2018-10-26 22:25:26,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:25:26,896 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2018-10-26 22:25:26,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:25:26,896 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2018-10-26 22:25:26,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-26 22:25:26,897 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:25:26,897 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:25:26,897 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:25:26,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:25:26,898 INFO L82 PathProgramCache]: Analyzing trace with hash -113422118, now seen corresponding path program 1 times [2018-10-26 22:25:26,898 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 22:25:26,898 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/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 [2018-10-26 22:25:26,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:25:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:25:26,957 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:25:26,997 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 22:25:27,000 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 22:25:27,000 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 22:25:27,004 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 22:25:27,014 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 22:25:27,014 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-10-26 22:25:27,071 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-10-26 22:25:27,074 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-10-26 22:25:27,075 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 22:25:27,077 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 22:25:27,080 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 22:25:27,080 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-10-26 22:25:27,206 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-26 22:25:27,206 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 22:25:27,220 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:25:27,220 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-10-26 22:25:27,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 22:25:27,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 22:25:27,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-10-26 22:25:27,221 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 10 states. [2018-10-26 22:25:27,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:25:27,953 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2018-10-26 22:25:27,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-26 22:25:27,954 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2018-10-26 22:25:27,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:25:27,955 INFO L225 Difference]: With dead ends: 82 [2018-10-26 22:25:27,955 INFO L226 Difference]: Without dead ends: 51 [2018-10-26 22:25:27,955 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-10-26 22:25:27,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-26 22:25:27,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-26 22:25:27,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-26 22:25:27,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2018-10-26 22:25:27,963 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 47 [2018-10-26 22:25:27,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:25:27,963 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2018-10-26 22:25:27,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 22:25:27,964 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2018-10-26 22:25:27,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-26 22:25:27,965 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:25:27,965 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:25:27,966 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:25:27,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:25:27,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1826494496, now seen corresponding path program 1 times [2018-10-26 22:25:27,967 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 22:25:27,967 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/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 [2018-10-26 22:25:27,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:25:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:25:28,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:25:28,099 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-26 22:25:28,099 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 22:25:28,108 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:25:28,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 22:25:28,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 22:25:28,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 22:25:28,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:25:28,109 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 5 states. [2018-10-26 22:25:28,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:25:28,183 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2018-10-26 22:25:28,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 22:25:28,185 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2018-10-26 22:25:28,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:25:28,187 INFO L225 Difference]: With dead ends: 75 [2018-10-26 22:25:28,187 INFO L226 Difference]: Without dead ends: 51 [2018-10-26 22:25:28,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:25:28,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-26 22:25:28,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-26 22:25:28,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-26 22:25:28,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-10-26 22:25:28,194 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 48 [2018-10-26 22:25:28,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:25:28,195 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-10-26 22:25:28,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 22:25:28,195 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-10-26 22:25:28,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-26 22:25:28,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:25:28,198 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:25:28,198 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:25:28,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:25:28,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1659126174, now seen corresponding path program 1 times [2018-10-26 22:25:28,199 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 22:25:28,199 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/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 [2018-10-26 22:25:28,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:25:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:25:28,269 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:25:28,346 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-26 22:25:28,346 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 22:25:28,354 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:25:28,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-26 22:25:28,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 22:25:28,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 22:25:28,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-26 22:25:28,355 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 8 states. [2018-10-26 22:25:28,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:25:28,535 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-10-26 22:25:28,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 22:25:28,536 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2018-10-26 22:25:28,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:25:28,537 INFO L225 Difference]: With dead ends: 54 [2018-10-26 22:25:28,537 INFO L226 Difference]: Without dead ends: 51 [2018-10-26 22:25:28,538 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-10-26 22:25:28,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-26 22:25:28,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-26 22:25:28,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-26 22:25:28,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-26 22:25:28,543 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-10-26 22:25:28,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:25:28,544 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-26 22:25:28,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 22:25:28,544 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-26 22:25:28,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-26 22:25:28,545 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:25:28,545 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:25:28,546 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:25:28,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:25:28,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1902635068, now seen corresponding path program 1 times [2018-10-26 22:25:28,547 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 22:25:28,547 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/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 [2018-10-26 22:25:28,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:25:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:25:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:25:28,757 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 22:25:28,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:25:28 BoogieIcfgContainer [2018-10-26 22:25:28,848 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:25:28,848 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 22:25:28,848 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 22:25:28,849 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 22:25:28,849 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:25:24" (3/4) ... [2018-10-26 22:25:28,852 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-26 22:25:28,952 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e4176df9-8862-4d6c-81bd-61dabec8704f/bin-2019/uautomizer/witness.graphml [2018-10-26 22:25:28,955 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 22:25:28,956 INFO L168 Benchmark]: Toolchain (without parser) took 5913.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 951.9 MB in the beginning and 861.0 MB in the end (delta: 90.9 MB). Peak memory consumption was 253.9 MB. Max. memory is 11.5 GB. [2018-10-26 22:25:28,957 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:25:28,957 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.71 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 935.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-10-26 22:25:28,959 INFO L168 Benchmark]: Boogie Preprocessor took 66.48 ms. Allocated memory is still 1.0 GB. Free memory is still 935.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:25:28,959 INFO L168 Benchmark]: RCFGBuilder took 635.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -191.1 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2018-10-26 22:25:28,960 INFO L168 Benchmark]: TraceAbstraction took 4822.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 861.0 MB in the end (delta: 265.9 MB). Peak memory consumption was 265.9 MB. Max. memory is 11.5 GB. [2018-10-26 22:25:28,961 INFO L168 Benchmark]: Witness Printer took 106.75 ms. Allocated memory is still 1.2 GB. Free memory is still 861.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:25:28,963 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 276.71 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 935.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 66.48 ms. Allocated memory is still 1.0 GB. Free memory is still 935.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 635.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -191.1 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4822.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 861.0 MB in the end (delta: 265.9 MB). Peak memory consumption was 265.9 MB. Max. memory is 11.5 GB. * Witness Printer took 106.75 ms. Allocated memory is still 1.2 GB. Free memory is still 861.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 70]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; VAL [x=0.0, y=0.0] [L66] CALL, EXPR fmin_float(x, y) VAL [\old(x)=0.0, \old(y)=0.0] [L36] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0.0] [L13] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L16] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L17] FCALL gf_u.value = (x) VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L18] EXPR, FCALL gf_u.word VAL [\old(x)=0.0, gf_u={2:0}, gf_u.word=-2147483648, x=0.0] [L18] (w) = gf_u.word [L19] COND FALSE !(0) VAL [\old(x)=0.0, w=2147483648, x=0.0] [L21] COND TRUE w == 0x00000000 || w == 0x80000000 [L22] RET return 2; VAL [\old(x)=0.0, \result=2, w=2147483648, x=0.0] [L36] EXPR __fpclassify_float(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(x)=2, x=0.0, y=0.0] [L36] COND FALSE !(__fpclassify_float(x) == 0) [L38] CALL, EXPR __fpclassify_float(y) VAL [\old(x)=0.0] [L13] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L16] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L17] FCALL gf_u.value = (x) VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L18] EXPR, FCALL gf_u.word VAL [\old(x)=0.0, gf_u={2:0}, gf_u.word=0, x=0.0] [L18] (w) = gf_u.word [L19] COND FALSE !(0) VAL [\old(x)=0.0, w=0, x=0.0] [L21] COND TRUE w == 0x00000000 || w == 0x80000000 [L22] RET return 2; VAL [\old(x)=0.0, \result=2, w=0, x=0.0] [L38] EXPR __fpclassify_float(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(y)=2, x=0.0, y=0.0] [L38] COND FALSE !(__fpclassify_float(y) == 0) [L41] COND FALSE, EXPR !(x < y ? x : y) VAL [\old(x)=0.0, \old(y)=0.0, x=0.0, x < y ? x : y=0.0, y=0.0] [L41] RET return x < y ? x : y; [L66] EXPR fmin_float(x, y) VAL [fmin_float(x, y)=0.0, x=0.0, y=0.0] [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=0.0, res == -0.0f && __signbit_float(res) == 1=1, x=0.0, y=0.0] [L69] CALL, EXPR __signbit_float(res) VAL [\old(x)=0.0] [L45] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L48] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L49] FCALL gf_u.value = (x) VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L50] EXPR, FCALL gf_u.word VAL [\old(x)=0.0, gf_u={2:0}, gf_u.word=0, x=0.0] [L50] (w) = gf_u.word [L51] COND FALSE !(0) VAL [\old(x)=0.0, w=0, x=0.0] [L53] RET return (w & 0x80000000) != 0; VAL [\old(x)=0.0, \result=0, w=0, x=0.0] [L69] EXPR __signbit_float(res) VAL [__signbit_float(res)=0, res=0.0, res == -0.0f && __signbit_float(res) == 1=1, x=0.0, y=0.0] [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [__signbit_float(res)=0, res=0.0, res == -0.0f && __signbit_float(res) == 1=0, x=0.0, y=0.0] [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() VAL [res=0.0, x=0.0, y=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 58 locations, 1 error locations. UNSAFE Result, 4.7s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 2.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 380 SDtfs, 122 SDslu, 1261 SDs, 0 SdLazy, 423 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 284 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 335 NumberOfCodeBlocks, 335 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 264 ConstructedInterpolants, 12 QuantifiedInterpolants, 27895 SizeOfPredicates, 23 NumberOfNonLiveVariables, 599 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 56/56 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...