./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1230_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1230_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31da98a788dd1938c78053bade42bc512d4e8954 ................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1230_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31da98a788dd1938c78053bade42bc512d4e8954 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 20:22:31,501 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 20:22:31,503 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 20:22:31,519 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 20:22:31,519 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 20:22:31,520 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 20:22:31,522 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 20:22:31,524 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 20:22:31,525 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 20:22:31,527 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 20:22:31,528 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 20:22:31,528 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 20:22:31,529 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 20:22:31,531 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 20:22:31,532 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 20:22:31,533 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 20:22:31,534 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 20:22:31,536 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 20:22:31,538 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 20:22:31,540 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 20:22:31,541 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 20:22:31,543 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 20:22:31,545 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 20:22:31,546 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 20:22:31,546 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 20:22:31,547 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 20:22:31,548 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 20:22:31,549 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 20:22:31,550 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 20:22:31,551 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 20:22:31,552 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 20:22:31,552 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 20:22:31,553 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 20:22:31,553 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 20:22:31,555 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 20:22:31,556 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 20:22:31,556 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-26 20:22:31,570 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 20:22:31,570 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 20:22:31,571 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 20:22:31,571 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 20:22:31,572 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 20:22:31,572 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 20:22:31,572 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 20:22:31,572 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 20:22:31,572 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 20:22:31,573 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 20:22:31,573 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 20:22:31,573 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 20:22:31,573 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 20:22:31,575 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 20:22:31,575 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 20:22:31,575 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 20:22:31,575 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 20:22:31,576 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 20:22:31,576 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 20:22:31,576 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 20:22:31,576 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 20:22:31,576 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 20:22:31,577 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:22:31,577 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 20:22:31,577 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 20:22:31,577 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 20:22:31,577 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 20:22:31,577 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 20:22:31,578 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 20:22:31,578 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_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31da98a788dd1938c78053bade42bc512d4e8954 [2018-10-26 20:22:31,613 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 20:22:31,633 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 20:22:31,638 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 20:22:31,639 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 20:22:31,640 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 20:22:31,641 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1230_true-unreach-call.c [2018-10-26 20:22:31,708 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer/data/5cc8b0539/349eb39f1cd240f4b8844615d26ab91e/FLAG7313e7a0e [2018-10-26 20:22:32,109 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 20:22:32,110 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/sv-benchmarks/c/float-newlib/float_req_bl_1230_true-unreach-call.c [2018-10-26 20:22:32,118 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer/data/5cc8b0539/349eb39f1cd240f4b8844615d26ab91e/FLAG7313e7a0e [2018-10-26 20:22:32,133 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer/data/5cc8b0539/349eb39f1cd240f4b8844615d26ab91e [2018-10-26 20:22:32,136 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 20:22:32,138 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 20:22:32,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 20:22:32,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 20:22:32,144 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 20:22:32,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:22:32" (1/1) ... [2018-10-26 20:22:32,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ad7475c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:22:32, skipping insertion in model container [2018-10-26 20:22:32,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:22:32" (1/1) ... [2018-10-26 20:22:32,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 20:22:32,191 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 20:22:32,367 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:22:32,371 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 20:22:32,394 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:22:32,422 INFO L193 MainTranslator]: Completed translation [2018-10-26 20:22:32,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:22:32 WrapperNode [2018-10-26 20:22:32,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 20:22:32,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 20:22:32,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 20:22:32,424 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 20:22:32,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:22:32" (1/1) ... [2018-10-26 20:22:32,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:22:32" (1/1) ... [2018-10-26 20:22:32,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:22:32" (1/1) ... [2018-10-26 20:22:32,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:22:32" (1/1) ... [2018-10-26 20:22:32,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:22:32" (1/1) ... [2018-10-26 20:22:32,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:22:32" (1/1) ... [2018-10-26 20:22:32,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:22:32" (1/1) ... [2018-10-26 20:22:32,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 20:22:32,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 20:22:32,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 20:22:32,470 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 20:22:32,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:22:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/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 20:22:32,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 20:22:32,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 20:22:32,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-10-26 20:22:32,627 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-10-26 20:22:32,627 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-10-26 20:22:32,627 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 20:22:32,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 20:22:32,628 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-10-26 20:22:32,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-26 20:22:32,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-10-26 20:22:32,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-26 20:22:32,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-26 20:22:32,628 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-10-26 20:22:32,629 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-10-26 20:22:32,629 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 20:22:32,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 20:22:32,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 20:22:32,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-10-26 20:22:32,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-10-26 20:22:32,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-10-26 20:22:32,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-10-26 20:22:33,290 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 20:22:33,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:22:33 BoogieIcfgContainer [2018-10-26 20:22:33,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 20:22:33,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 20:22:33,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 20:22:33,296 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 20:22:33,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:22:32" (1/3) ... [2018-10-26 20:22:33,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16822724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:22:33, skipping insertion in model container [2018-10-26 20:22:33,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:22:32" (2/3) ... [2018-10-26 20:22:33,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16822724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:22:33, skipping insertion in model container [2018-10-26 20:22:33,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:22:33" (3/3) ... [2018-10-26 20:22:33,300 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230_true-unreach-call.c [2018-10-26 20:22:33,312 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 20:22:33,321 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 20:22:33,347 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 20:22:33,394 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 20:22:33,395 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 20:22:33,395 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 20:22:33,395 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 20:22:33,395 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 20:22:33,397 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 20:22:33,397 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 20:22:33,397 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 20:22:33,397 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 20:22:33,429 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-10-26 20:22:33,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-26 20:22:33,441 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:22:33,442 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] [2018-10-26 20:22:33,445 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:22:33,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:22:33,459 INFO L82 PathProgramCache]: Analyzing trace with hash 972398874, now seen corresponding path program 1 times [2018-10-26 20:22:33,461 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:22:33,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:22:33,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:22:33,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:22:33,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:22:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:22:33,621 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 20:22:33,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:22:33,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 20:22:33,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 20:22:33,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 20:22:33,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 20:22:33,656 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 2 states. [2018-10-26 20:22:33,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:22:33,694 INFO L93 Difference]: Finished difference Result 87 states and 108 transitions. [2018-10-26 20:22:33,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 20:22:33,696 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-10-26 20:22:33,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:22:33,708 INFO L225 Difference]: With dead ends: 87 [2018-10-26 20:22:33,708 INFO L226 Difference]: Without dead ends: 44 [2018-10-26 20:22:33,714 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 20:22:33,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-26 20:22:33,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-26 20:22:33,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-26 20:22:33,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2018-10-26 20:22:33,759 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 26 [2018-10-26 20:22:33,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:22:33,760 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2018-10-26 20:22:33,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 20:22:33,760 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2018-10-26 20:22:33,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-26 20:22:33,763 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:22:33,763 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, 1] [2018-10-26 20:22:33,763 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:22:33,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:22:33,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1488347716, now seen corresponding path program 1 times [2018-10-26 20:22:33,764 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:22:33,764 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:22:33,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:22:33,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:22:33,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:22:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:22:33,916 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 20:22:33,916 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:22:33,916 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 20:22:33,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 20:22:33,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 20:22:33,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:22:33,919 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 4 states. [2018-10-26 20:22:34,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:22:34,032 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2018-10-26 20:22:34,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 20:22:34,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-10-26 20:22:34,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:22:34,036 INFO L225 Difference]: With dead ends: 59 [2018-10-26 20:22:34,036 INFO L226 Difference]: Without dead ends: 48 [2018-10-26 20:22:34,037 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 20:22:34,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-26 20:22:34,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-26 20:22:34,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-26 20:22:34,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-10-26 20:22:34,050 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 35 [2018-10-26 20:22:34,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:22:34,050 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-10-26 20:22:34,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 20:22:34,050 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-10-26 20:22:34,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-26 20:22:34,052 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:22:34,052 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, 1, 1, 1, 1] [2018-10-26 20:22:34,052 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:22:34,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:22:34,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1403372891, now seen corresponding path program 1 times [2018-10-26 20:22:34,053 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:22:34,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:22:34,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:22:34,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:22:34,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:22:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:22:34,157 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 20:22:34,157 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:22:34,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 20:22:34,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 20:22:34,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 20:22:34,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:22:34,160 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 4 states. [2018-10-26 20:22:34,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:22:34,280 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2018-10-26 20:22:34,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 20:22:34,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-10-26 20:22:34,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:22:34,285 INFO L225 Difference]: With dead ends: 63 [2018-10-26 20:22:34,285 INFO L226 Difference]: Without dead ends: 52 [2018-10-26 20:22:34,285 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 20:22:34,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-26 20:22:34,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2018-10-26 20:22:34,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-26 20:22:34,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-10-26 20:22:34,293 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 38 [2018-10-26 20:22:34,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:22:34,298 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-10-26 20:22:34,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 20:22:34,298 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-10-26 20:22:34,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-26 20:22:34,299 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:22:34,299 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, 1, 1, 1, 1] [2018-10-26 20:22:34,300 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:22:34,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:22:34,300 INFO L82 PathProgramCache]: Analyzing trace with hash 104178918, now seen corresponding path program 1 times [2018-10-26 20:22:34,300 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:22:34,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:22:34,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:22:34,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:22:34,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:22:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:22:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:22:34,431 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 20:22:34,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:22:34 BoogieIcfgContainer [2018-10-26 20:22:34,462 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 20:22:34,463 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 20:22:34,463 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 20:22:34,463 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 20:22:34,464 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:22:33" (3/4) ... [2018-10-26 20:22:34,468 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-26 20:22:34,468 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 20:22:34,469 INFO L168 Benchmark]: Toolchain (without parser) took 2332.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 962.5 MB in the beginning and 1.1 GB in the end (delta: -121.7 MB). Peak memory consumption was 31.4 MB. Max. memory is 11.5 GB. [2018-10-26 20:22:34,471 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:22:34,472 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.39 ms. Allocated memory is still 1.0 GB. Free memory was 962.5 MB in the beginning and 951.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:22:34,472 INFO L168 Benchmark]: Boogie Preprocessor took 46.17 ms. Allocated memory is still 1.0 GB. Free memory was 951.7 MB in the beginning and 946.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-26 20:22:34,473 INFO L168 Benchmark]: RCFGBuilder took 821.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 946.4 MB in the beginning and 1.1 GB in the end (delta: -186.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2018-10-26 20:22:34,474 INFO L168 Benchmark]: TraceAbstraction took 1170.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 11.5 GB. [2018-10-26 20:22:34,475 INFO L168 Benchmark]: Witness Printer took 5.70 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 20:22:34,479 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 284.39 ms. Allocated memory is still 1.0 GB. Free memory was 962.5 MB in the beginning and 951.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 46.17 ms. Allocated memory is still 1.0 GB. Free memory was 951.7 MB in the beginning and 946.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 821.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 946.4 MB in the beginning and 1.1 GB in the end (delta: -186.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1170.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 11.5 GB. * Witness Printer took 5.70 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: 59]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 54. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L55] float y = 0.0f / 0.0f; [L56] CALL, EXPR fmin_float(x, y) VAL [\old(x)=4286578691, \old(y)=4286578692] [L35] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578691] [L12] __uint32_t w; VAL [\old(x)=4286578691, x=4286578691] [L15] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=4286578691, gf_u={4286578695:0}, x=4286578691] [L16] FCALL gf_u.value = (x) VAL [\old(x)=4286578691, gf_u={4286578695:0}, x=4286578691] [L17] EXPR, FCALL gf_u.word VAL [\old(x)=4286578691, gf_u={4286578695:0}, gf_u.word=4286578689, x=4286578691] [L17] (w) = gf_u.word VAL [(w) = gf_u.word=4286578693, \old(x)=4286578691, gf_u={4286578695:0}, gf_u.word=4286578689, w=4286578689, x=4286578691] [L18] COND FALSE !(0) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L20] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L22-L23] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L25-L26] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L28] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L31] RET return 0; VAL [\old(x)=4286578691, \result=0, w=4286578689, x=4286578691] [L35] EXPR __fpclassify_float(x) VAL [\old(x)=4286578691, \old(y)=4286578692, __fpclassify_float(x)=0, x=4286578691, y=4286578692] [L35] COND TRUE __fpclassify_float(x) == 0 [L36] RET return y; VAL [\old(x)=4286578691, \old(y)=4286578692, \result=4286578692, x=4286578691, y=4286578692] [L56] EXPR fmin_float(x, y) VAL [fmin_float(x, y)=4286578692, x=4286578691, y=4286578692] [L56] float res = fmin_float(x, y); [L58] CALL, EXPR isnan_float(res) VAL [\old(x)=4286578692] [L44] RET return x != x; VAL [\old(x)=4286578692, \result=0, x=4286578692] [L58] EXPR isnan_float(res) VAL [isnan_float(res)=0, res=4286578692, x=4286578691, y=4286578692] [L58] COND TRUE !isnan_float(res) [L59] __VERIFIER_error() VAL [res=4286578692, x=4286578691, y=4286578692] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 48 locations, 1 error locations. UNSAFE Result, 1.0s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 158 SDtfs, 0 SDslu, 190 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred 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, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 3718 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 20:22:36,946 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 20:22:36,947 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 20:22:36,959 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 20:22:36,960 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 20:22:36,961 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 20:22:36,962 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 20:22:36,964 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 20:22:36,965 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 20:22:36,966 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 20:22:36,967 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 20:22:36,968 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 20:22:36,969 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 20:22:36,970 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 20:22:36,971 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 20:22:36,971 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 20:22:36,972 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 20:22:36,974 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 20:22:36,976 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 20:22:36,977 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 20:22:36,979 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 20:22:36,980 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 20:22:36,982 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 20:22:36,982 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 20:22:36,982 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 20:22:36,983 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 20:22:36,984 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 20:22:36,985 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 20:22:36,986 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 20:22:36,987 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 20:22:36,987 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 20:22:36,988 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 20:22:36,988 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 20:22:36,988 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 20:22:36,989 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 20:22:36,990 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 20:22:36,990 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-10-26 20:22:37,008 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 20:22:37,008 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 20:22:37,014 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 20:22:37,014 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 20:22:37,015 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 20:22:37,015 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 20:22:37,016 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 20:22:37,016 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 20:22:37,016 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 20:22:37,016 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 20:22:37,016 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 20:22:37,017 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 20:22:37,017 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 20:22:37,017 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 20:22:37,017 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 20:22:37,017 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 20:22:37,017 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 20:22:37,018 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 20:22:37,018 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 20:22:37,018 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 20:22:37,018 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 20:22:37,018 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 20:22:37,018 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 20:22:37,019 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:22:37,019 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 20:22:37,019 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 20:22:37,019 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 20:22:37,021 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-10-26 20:22:37,022 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 20:22:37,022 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 20:22:37,022 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 20:22:37,022 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_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31da98a788dd1938c78053bade42bc512d4e8954 [2018-10-26 20:22:37,068 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 20:22:37,083 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 20:22:37,088 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 20:22:37,090 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 20:22:37,091 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 20:22:37,092 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1230_true-unreach-call.c [2018-10-26 20:22:37,155 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer/data/714697fc9/63a52455b5ad4b8aaeb700451184591a/FLAG2a58c8397 [2018-10-26 20:22:37,608 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 20:22:37,609 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/sv-benchmarks/c/float-newlib/float_req_bl_1230_true-unreach-call.c [2018-10-26 20:22:37,615 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer/data/714697fc9/63a52455b5ad4b8aaeb700451184591a/FLAG2a58c8397 [2018-10-26 20:22:37,632 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer/data/714697fc9/63a52455b5ad4b8aaeb700451184591a [2018-10-26 20:22:37,636 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 20:22:37,638 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 20:22:37,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 20:22:37,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 20:22:37,643 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 20:22:37,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:22:37" (1/1) ... [2018-10-26 20:22:37,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@732fa9ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:22:37, skipping insertion in model container [2018-10-26 20:22:37,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:22:37" (1/1) ... [2018-10-26 20:22:37,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 20:22:37,680 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 20:22:37,869 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:22:37,875 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 20:22:37,901 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:22:37,928 INFO L193 MainTranslator]: Completed translation [2018-10-26 20:22:37,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:22:37 WrapperNode [2018-10-26 20:22:37,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 20:22:37,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 20:22:37,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 20:22:37,930 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 20:22:37,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:22:37" (1/1) ... [2018-10-26 20:22:37,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:22:37" (1/1) ... [2018-10-26 20:22:37,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:22:37" (1/1) ... [2018-10-26 20:22:37,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:22:37" (1/1) ... [2018-10-26 20:22:37,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:22:37" (1/1) ... [2018-10-26 20:22:37,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:22:37" (1/1) ... [2018-10-26 20:22:37,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:22:37" (1/1) ... [2018-10-26 20:22:37,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 20:22:37,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 20:22:37,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 20:22:37,986 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 20:22:37,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:22:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/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 20:22:38,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 20:22:38,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 20:22:38,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-10-26 20:22:38,059 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-10-26 20:22:38,059 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-10-26 20:22:38,059 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 20:22:38,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 20:22:38,059 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-10-26 20:22:38,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-26 20:22:38,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-10-26 20:22:38,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-10-26 20:22:38,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-26 20:22:38,060 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-10-26 20:22:38,060 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-10-26 20:22:38,060 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 20:22:38,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 20:22:38,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 20:22:38,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-10-26 20:22:38,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-10-26 20:22:38,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-10-26 20:22:38,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-10-26 20:22:38,512 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 20:22:38,538 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 20:22:38,653 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 20:22:38,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:22:38 BoogieIcfgContainer [2018-10-26 20:22:38,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 20:22:38,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 20:22:38,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 20:22:38,659 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 20:22:38,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:22:37" (1/3) ... [2018-10-26 20:22:38,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20bef4d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:22:38, skipping insertion in model container [2018-10-26 20:22:38,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:22:37" (2/3) ... [2018-10-26 20:22:38,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20bef4d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:22:38, skipping insertion in model container [2018-10-26 20:22:38,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:22:38" (3/3) ... [2018-10-26 20:22:38,664 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230_true-unreach-call.c [2018-10-26 20:22:38,677 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 20:22:38,686 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 20:22:38,706 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 20:22:38,740 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 20:22:38,741 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 20:22:38,741 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 20:22:38,741 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 20:22:38,741 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 20:22:38,741 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 20:22:38,742 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 20:22:38,742 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 20:22:38,742 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 20:22:38,759 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-10-26 20:22:38,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-26 20:22:38,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:22:38,767 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] [2018-10-26 20:22:38,771 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:22:38,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:22:38,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1802458678, now seen corresponding path program 1 times [2018-10-26 20:22:38,784 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:22:38,785 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-10-26 20:22:38,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:22:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:22:38,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:22:38,892 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 20:22:38,892 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:22:38,911 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:22:38,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 20:22:38,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 20:22:38,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 20:22:38,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 20:22:38,929 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2018-10-26 20:22:38,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:22:38,957 INFO L93 Difference]: Finished difference Result 81 states and 102 transitions. [2018-10-26 20:22:38,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 20:22:38,959 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-10-26 20:22:38,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:22:38,970 INFO L225 Difference]: With dead ends: 81 [2018-10-26 20:22:38,970 INFO L226 Difference]: Without dead ends: 41 [2018-10-26 20:22:38,975 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 20:22:38,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-26 20:22:39,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-26 20:22:39,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-26 20:22:39,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-10-26 20:22:39,021 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 24 [2018-10-26 20:22:39,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:22:39,021 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-10-26 20:22:39,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 20:22:39,022 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-10-26 20:22:39,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-26 20:22:39,024 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:22:39,024 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] [2018-10-26 20:22:39,025 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:22:39,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:22:39,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1841206223, now seen corresponding path program 1 times [2018-10-26 20:22:39,026 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:22:39,026 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/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 20:22:39,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:22:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:22:39,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:22:39,197 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 20:22:39,201 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:22:39,212 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:22:39,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 20:22:39,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 20:22:39,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 20:22:39,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:22:39,216 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 4 states. [2018-10-26 20:22:39,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:22:39,332 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2018-10-26 20:22:39,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 20:22:39,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-10-26 20:22:39,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:22:39,337 INFO L225 Difference]: With dead ends: 54 [2018-10-26 20:22:39,337 INFO L226 Difference]: Without dead ends: 44 [2018-10-26 20:22:39,338 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:22:39,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-26 20:22:39,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-26 20:22:39,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-26 20:22:39,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-10-26 20:22:39,357 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 33 [2018-10-26 20:22:39,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:22:39,360 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-10-26 20:22:39,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 20:22:39,360 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-10-26 20:22:39,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-26 20:22:39,362 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:22:39,362 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 20:22:39,362 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:22:39,362 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:22:39,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1530245693, now seen corresponding path program 1 times [2018-10-26 20:22:39,363 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:22:39,363 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-10-26 20:22:39,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:22:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:22:39,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:22:39,610 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 20:22:39,610 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:22:39,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:22:39,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 20:22:39,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 20:22:39,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 20:22:39,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:22:39,624 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 4 states. [2018-10-26 20:22:39,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:22:39,675 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2018-10-26 20:22:39,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 20:22:39,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-10-26 20:22:39,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:22:39,677 INFO L225 Difference]: With dead ends: 57 [2018-10-26 20:22:39,678 INFO L226 Difference]: Without dead ends: 47 [2018-10-26 20:22:39,678 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 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 20:22:39,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-26 20:22:39,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2018-10-26 20:22:39,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-26 20:22:39,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-10-26 20:22:39,687 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 34 [2018-10-26 20:22:39,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:22:39,688 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-10-26 20:22:39,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 20:22:39,688 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-10-26 20:22:39,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-26 20:22:39,689 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:22:39,690 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, 1] [2018-10-26 20:22:39,690 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:22:39,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:22:39,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1792427957, now seen corresponding path program 1 times [2018-10-26 20:22:39,691 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:22:39,691 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-10-26 20:22:39,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:22:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:22:39,770 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:22:39,816 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 20:22:39,817 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:22:39,834 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:22:39,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 20:22:39,835 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 20:22:39,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 20:22:39,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:22:39,836 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 4 states. [2018-10-26 20:22:39,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:22:39,968 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2018-10-26 20:22:39,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 20:22:39,969 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-10-26 20:22:39,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:22:39,971 INFO L225 Difference]: With dead ends: 57 [2018-10-26 20:22:39,971 INFO L226 Difference]: Without dead ends: 47 [2018-10-26 20:22:39,972 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:22:39,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-26 20:22:39,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2018-10-26 20:22:39,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-26 20:22:39,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-10-26 20:22:39,980 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 35 [2018-10-26 20:22:39,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:22:39,981 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-10-26 20:22:39,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 20:22:39,981 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-10-26 20:22:39,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-26 20:22:39,983 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:22:39,984 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, 1, 1] [2018-10-26 20:22:39,984 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:22:39,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:22:39,984 INFO L82 PathProgramCache]: Analyzing trace with hash -136871486, now seen corresponding path program 1 times [2018-10-26 20:22:39,985 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:22:39,985 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/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 20:22:39,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:22:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:22:40,067 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:22:40,334 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 20:22:40,334 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:22:40,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:22:40,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-26 20:22:40,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 20:22:40,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 20:22:40,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-26 20:22:40,352 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 9 states. [2018-10-26 20:22:41,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:22:41,082 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-10-26 20:22:41,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 20:22:41,082 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-10-26 20:22:41,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:22:41,084 INFO L225 Difference]: With dead ends: 51 [2018-10-26 20:22:41,084 INFO L226 Difference]: Without dead ends: 44 [2018-10-26 20:22:41,084 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-10-26 20:22:41,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-26 20:22:41,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-10-26 20:22:41,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-26 20:22:41,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-10-26 20:22:41,091 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 36 [2018-10-26 20:22:41,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:22:41,092 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-10-26 20:22:41,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 20:22:41,092 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-10-26 20:22:41,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-26 20:22:41,095 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:22:41,095 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] [2018-10-26 20:22:41,096 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:22:41,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:22:41,096 INFO L82 PathProgramCache]: Analyzing trace with hash -2090172777, now seen corresponding path program 1 times [2018-10-26 20:22:41,096 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:22:41,096 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/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 20:22:41,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:22:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:22:41,169 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:22:41,241 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 20:22:41,242 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:22:41,255 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:22:41,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 20:22:41,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 20:22:41,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 20:22:41,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:22:41,256 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 4 states. [2018-10-26 20:22:41,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:22:41,286 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2018-10-26 20:22:41,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 20:22:41,287 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2018-10-26 20:22:41,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:22:41,289 INFO L225 Difference]: With dead ends: 54 [2018-10-26 20:22:41,289 INFO L226 Difference]: Without dead ends: 44 [2018-10-26 20:22:41,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 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 20:22:41,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-26 20:22:41,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-26 20:22:41,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-26 20:22:41,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2018-10-26 20:22:41,299 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 49 [2018-10-26 20:22:41,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:22:41,300 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2018-10-26 20:22:41,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 20:22:41,300 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2018-10-26 20:22:41,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-26 20:22:41,303 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:22:41,303 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, 1, 1, 1] [2018-10-26 20:22:41,303 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:22:41,304 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:22:41,304 INFO L82 PathProgramCache]: Analyzing trace with hash -2037596367, now seen corresponding path program 1 times [2018-10-26 20:22:41,304 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:22:41,304 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/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 20:22:41,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:22:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:22:41,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:22:41,401 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 20:22:41,401 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:22:41,418 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:22:41,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 20:22:41,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 20:22:41,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 20:22:41,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:22:41,420 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 4 states. [2018-10-26 20:22:41,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:22:41,468 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2018-10-26 20:22:41,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 20:22:41,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2018-10-26 20:22:41,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:22:41,471 INFO L225 Difference]: With dead ends: 57 [2018-10-26 20:22:41,471 INFO L226 Difference]: Without dead ends: 47 [2018-10-26 20:22:41,473 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 47 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 20:22:41,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-26 20:22:41,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2018-10-26 20:22:41,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-26 20:22:41,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2018-10-26 20:22:41,483 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 50 [2018-10-26 20:22:41,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:22:41,483 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2018-10-26 20:22:41,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 20:22:41,484 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2018-10-26 20:22:41,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-26 20:22:41,485 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:22:41,487 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] [2018-10-26 20:22:41,488 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:22:41,488 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:22:41,488 INFO L82 PathProgramCache]: Analyzing trace with hash 191150482, now seen corresponding path program 1 times [2018-10-26 20:22:41,489 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:22:41,489 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/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 20:22:41,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:22:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:22:41,572 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:22:41,708 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 20:22:41,708 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:22:41,721 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:22:41,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 20:22:41,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 20:22:41,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 20:22:41,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 20:22:41,723 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 5 states. [2018-10-26 20:22:41,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:22:41,972 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2018-10-26 20:22:41,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 20:22:41,973 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2018-10-26 20:22:41,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:22:41,974 INFO L225 Difference]: With dead ends: 55 [2018-10-26 20:22:41,974 INFO L226 Difference]: Without dead ends: 44 [2018-10-26 20:22:41,975 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 20:22:41,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-26 20:22:41,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-26 20:22:41,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-26 20:22:41,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2018-10-26 20:22:41,981 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 51 [2018-10-26 20:22:41,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:22:41,983 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2018-10-26 20:22:41,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 20:22:41,984 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2018-10-26 20:22:41,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-26 20:22:41,985 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:22:41,986 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] [2018-10-26 20:22:41,986 INFO L424 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:22:41,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:22:41,986 INFO L82 PathProgramCache]: Analyzing trace with hash 892215060, now seen corresponding path program 1 times [2018-10-26 20:22:41,987 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:22:41,987 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-10-26 20:22:42,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:22:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:22:42,090 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:22:42,441 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 20:22:42,441 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:22:42,460 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:22:42,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-10-26 20:22:42,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 20:22:42,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 20:22:42,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-10-26 20:22:42,461 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 10 states. [2018-10-26 20:22:42,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:22:42,829 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2018-10-26 20:22:42,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 20:22:42,830 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2018-10-26 20:22:42,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:22:42,831 INFO L225 Difference]: With dead ends: 51 [2018-10-26 20:22:42,831 INFO L226 Difference]: Without dead ends: 41 [2018-10-26 20:22:42,831 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-10-26 20:22:42,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-26 20:22:42,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-26 20:22:42,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-26 20:22:42,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-10-26 20:22:42,840 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 51 [2018-10-26 20:22:42,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:22:42,840 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-10-26 20:22:42,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 20:22:42,841 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-10-26 20:22:42,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-26 20:22:42,844 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:22:42,844 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, 1, 1, 1, 1] [2018-10-26 20:22:42,845 INFO L424 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:22:42,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:22:42,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1581339685, now seen corresponding path program 1 times [2018-10-26 20:22:42,845 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:22:42,847 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-10-26 20:22:42,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:22:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:22:42,931 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:22:42,966 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 20:22:42,967 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:22:42,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:22:42,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 20:22:42,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 20:22:42,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 20:22:42,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:22:42,978 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 4 states. [2018-10-26 20:22:42,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:22:42,992 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2018-10-26 20:22:42,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 20:22:42,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2018-10-26 20:22:42,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:22:42,994 INFO L225 Difference]: With dead ends: 54 [2018-10-26 20:22:42,994 INFO L226 Difference]: Without dead ends: 43 [2018-10-26 20:22:42,995 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 48 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 20:22:42,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-26 20:22:43,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2018-10-26 20:22:43,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-26 20:22:43,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-10-26 20:22:43,001 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 51 [2018-10-26 20:22:43,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:22:43,002 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-10-26 20:22:43,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 20:22:43,002 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-10-26 20:22:43,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-26 20:22:43,003 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:22:43,003 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, 1, 1, 1, 1, 1] [2018-10-26 20:22:43,004 INFO L424 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:22:43,004 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:22:43,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1789299466, now seen corresponding path program 1 times [2018-10-26 20:22:43,005 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:22:43,005 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-10-26 20:22:43,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:22:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:22:43,087 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:22:43,258 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 20:22:43,258 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:22:43,269 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:22:43,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-26 20:22:43,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 20:22:43,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 20:22:43,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-26 20:22:43,271 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 9 states. [2018-10-26 20:22:43,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:22:43,622 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2018-10-26 20:22:43,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 20:22:43,622 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2018-10-26 20:22:43,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:22:43,623 INFO L225 Difference]: With dead ends: 41 [2018-10-26 20:22:43,623 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 20:22:43,623 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-10-26 20:22:43,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 20:22:43,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 20:22:43,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 20:22:43,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 20:22:43,624 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2018-10-26 20:22:43,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:22:43,625 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 20:22:43,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 20:22:43,625 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 20:22:43,625 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 20:22:43,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 20:22:43,936 INFO L425 ceAbstractionStarter]: For program point isnan_floatFINAL(line 44) no Hoare annotation was computed. [2018-10-26 20:22:43,936 INFO L428 ceAbstractionStarter]: At program point isnan_floatENTRY(line 44) the Hoare annotation is: true [2018-10-26 20:22:43,936 INFO L425 ceAbstractionStarter]: For program point isnan_floatEXIT(line 44) no Hoare annotation was computed. [2018-10-26 20:22:43,936 INFO L428 ceAbstractionStarter]: At program point fmin_floatENTRY(lines 34 41) the Hoare annotation is: true [2018-10-26 20:22:43,936 INFO L425 ceAbstractionStarter]: For program point fmin_floatEXIT(lines 34 41) no Hoare annotation was computed. [2018-10-26 20:22:43,937 INFO L425 ceAbstractionStarter]: For program point fmin_floatFINAL(lines 34 41) no Hoare annotation was computed. [2018-10-26 20:22:43,937 INFO L425 ceAbstractionStarter]: For program point L40(line 40) no Hoare annotation was computed. [2018-10-26 20:22:43,937 INFO L425 ceAbstractionStarter]: For program point L40-2(line 40) no Hoare annotation was computed. [2018-10-26 20:22:43,937 INFO L421 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: (and (= fmin_float_~x |fmin_float_#in~x|) (= fmin_float_~y |fmin_float_#in~y|)) [2018-10-26 20:22:43,937 INFO L425 ceAbstractionStarter]: For program point L37-1(lines 37 38) no Hoare annotation was computed. [2018-10-26 20:22:43,937 INFO L421 ceAbstractionStarter]: At program point L35(line 35) the Hoare annotation is: (and (= fmin_float_~x |fmin_float_#in~x|) (= fmin_float_~y |fmin_float_#in~y|)) [2018-10-26 20:22:43,937 INFO L425 ceAbstractionStarter]: For program point L35-1(lines 35 36) no Hoare annotation was computed. [2018-10-26 20:22:43,938 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-10-26 20:22:43,938 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-10-26 20:22:43,938 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-26 20:22:43,938 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-26 20:22:43,938 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-26 20:22:43,938 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-26 20:22:43,938 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-26 20:22:43,938 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 46 64) the Hoare annotation is: true [2018-10-26 20:22:43,939 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 46 64) no Hoare annotation was computed. [2018-10-26 20:22:43,939 INFO L425 ceAbstractionStarter]: For program point L59(line 59) no Hoare annotation was computed. [2018-10-26 20:22:43,939 INFO L421 ceAbstractionStarter]: At program point L58(line 58) the Hoare annotation is: (let ((.cse0 (fp.div RNE (_ +zero 8 24) (_ +zero 8 24)))) (and (= .cse0 main_~res~0) (= .cse0 main_~y~0))) [2018-10-26 20:22:43,939 INFO L425 ceAbstractionStarter]: For program point L58-1(lines 58 61) no Hoare annotation was computed. [2018-10-26 20:22:43,939 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 46 64) no Hoare annotation was computed. [2018-10-26 20:22:43,939 INFO L421 ceAbstractionStarter]: At program point L56(line 56) the Hoare annotation is: (let ((.cse0 (fp.div RNE (_ +zero 8 24) (_ +zero 8 24)))) (and (= .cse0 main_~x~0) (= .cse0 main_~y~0))) [2018-10-26 20:22:43,939 INFO L425 ceAbstractionStarter]: For program point L56-1(line 56) no Hoare annotation was computed. [2018-10-26 20:22:43,940 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 59) no Hoare annotation was computed. [2018-10-26 20:22:43,940 INFO L425 ceAbstractionStarter]: For program point __fpclassify_floatFINAL(lines 11 32) no Hoare annotation was computed. [2018-10-26 20:22:43,940 INFO L425 ceAbstractionStarter]: For program point L25(lines 25 31) no Hoare annotation was computed. [2018-10-26 20:22:43,940 INFO L425 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-10-26 20:22:43,940 INFO L425 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2018-10-26 20:22:43,940 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-10-26 20:22:43,940 INFO L425 ceAbstractionStarter]: For program point L17-2(line 17) no Hoare annotation was computed. [2018-10-26 20:22:43,940 INFO L425 ceAbstractionStarter]: For program point L15-1(line 15) no Hoare annotation was computed. [2018-10-26 20:22:43,940 INFO L425 ceAbstractionStarter]: For program point L15-2(line 15) no Hoare annotation was computed. [2018-10-26 20:22:43,941 INFO L425 ceAbstractionStarter]: For program point L15-3(line 15) no Hoare annotation was computed. [2018-10-26 20:22:43,941 INFO L425 ceAbstractionStarter]: For program point L28(lines 28 31) no Hoare annotation was computed. [2018-10-26 20:22:43,941 INFO L425 ceAbstractionStarter]: For program point L22(lines 22 31) no Hoare annotation was computed. [2018-10-26 20:22:43,941 INFO L425 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2018-10-26 20:22:43,941 INFO L425 ceAbstractionStarter]: For program point L14-1(lines 14 18) no Hoare annotation was computed. [2018-10-26 20:22:43,941 INFO L428 ceAbstractionStarter]: At program point __fpclassify_floatENTRY(lines 11 32) the Hoare annotation is: true [2018-10-26 20:22:43,941 INFO L428 ceAbstractionStarter]: At program point L14-3(lines 14 18) the Hoare annotation is: true [2018-10-26 20:22:43,941 INFO L425 ceAbstractionStarter]: For program point L14-4(lines 11 32) no Hoare annotation was computed. [2018-10-26 20:22:43,942 INFO L425 ceAbstractionStarter]: For program point __fpclassify_floatEXIT(lines 11 32) no Hoare annotation was computed. [2018-10-26 20:22:43,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:22:43 BoogieIcfgContainer [2018-10-26 20:22:43,948 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 20:22:43,949 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 20:22:43,949 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 20:22:43,949 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 20:22:43,950 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:22:38" (3/4) ... [2018-10-26 20:22:43,954 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-26 20:22:43,960 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-10-26 20:22:43,961 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-26 20:22:43,961 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_float [2018-10-26 20:22:43,961 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-26 20:22:43,962 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-10-26 20:22:43,969 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-10-26 20:22:43,969 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-10-26 20:22:43,969 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-26 20:22:44,035 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_cff916cd-e8d2-4fbb-8983-b3aa1904162f/bin-2019/uautomizer/witness.graphml [2018-10-26 20:22:44,039 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 20:22:44,040 INFO L168 Benchmark]: Toolchain (without parser) took 6403.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 953.2 MB in the beginning and 856.5 MB in the end (delta: 96.7 MB). Peak memory consumption was 259.8 MB. Max. memory is 11.5 GB. [2018-10-26 20:22:44,042 INFO L168 Benchmark]: CDTParser took 0.21 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 20:22:44,042 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.86 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:22:44,043 INFO L168 Benchmark]: Boogie Preprocessor took 55.68 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-26 20:22:44,043 INFO L168 Benchmark]: RCFGBuilder took 668.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -196.3 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2018-10-26 20:22:44,044 INFO L168 Benchmark]: TraceAbstraction took 5293.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 856.5 MB in the end (delta: 276.9 MB). Peak memory consumption was 276.9 MB. Max. memory is 11.5 GB. [2018-10-26 20:22:44,044 INFO L168 Benchmark]: Witness Printer took 90.93 ms. Allocated memory is still 1.2 GB. Free memory is still 856.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:22:44,056 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 290.86 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 55.68 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 668.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -196.3 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5293.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 856.5 MB in the end (delta: 276.9 MB). Peak memory consumption was 276.9 MB. Max. memory is 11.5 GB. * Witness Printer took 90.93 ms. Allocated memory is still 1.2 GB. Free memory is still 856.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 59]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 45 locations, 1 error locations. SAFE Result, 5.2s OverallTime, 11 OverallIterations, 2 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 505 SDtfs, 31 SDslu, 1466 SDs, 0 SdLazy, 204 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 469 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred 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: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 14 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 26 PreInvPairs, 31 NumberOfFragments, 48 HoareAnnotationTreeSize, 26 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 466 NumberOfCodeBlocks, 466 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 455 ConstructedInterpolants, 3 QuantifiedInterpolants, 32455 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1014 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 84/84 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...