./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b_false-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/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 064927d7c1e3d8158c8524deee46f65d988c7936 .......................................................................................................................................................................................................................................................................................................................................................................................... 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_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/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 064927d7c1e3d8158c8524deee46f65d988c7936 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 00:46:31,761 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 00:46:31,762 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 00:46:31,768 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 00:46:31,768 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 00:46:31,769 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 00:46:31,769 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 00:46:31,770 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 00:46:31,771 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 00:46:31,771 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 00:46:31,772 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 00:46:31,772 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 00:46:31,772 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 00:46:31,773 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 00:46:31,773 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 00:46:31,773 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 00:46:31,774 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 00:46:31,775 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 00:46:31,775 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 00:46:31,776 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 00:46:31,777 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 00:46:31,777 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 00:46:31,778 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 00:46:31,778 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 00:46:31,778 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 00:46:31,779 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 00:46:31,779 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 00:46:31,780 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 00:46:31,780 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 00:46:31,781 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 00:46:31,781 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 00:46:31,781 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 00:46:31,781 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 00:46:31,781 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 00:46:31,782 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 00:46:31,782 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 00:46:31,782 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-09 00:46:31,789 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 00:46:31,789 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 00:46:31,790 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 00:46:31,790 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 00:46:31,790 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 00:46:31,790 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 00:46:31,790 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 00:46:31,790 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 00:46:31,791 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 00:46:31,791 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 00:46:31,791 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 00:46:31,791 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 00:46:31,791 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 00:46:31,791 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 00:46:31,791 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 00:46:31,791 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 00:46:31,791 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 00:46:31,791 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 00:46:31,791 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 00:46:31,791 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 00:46:31,792 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 00:46:31,792 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 00:46:31,792 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 00:46:31,792 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 00:46:31,792 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 00:46:31,792 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 00:46:31,792 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 00:46:31,792 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-09 00:46:31,792 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 00:46:31,792 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 00:46:31,792 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_d8397d9b-1921-4189-a04c-35308b6f8768/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 -> 064927d7c1e3d8158c8524deee46f65d988c7936 [2018-12-09 00:46:31,809 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 00:46:31,816 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 00:46:31,818 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 00:46:31,819 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 00:46:31,819 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 00:46:31,819 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b_false-unreach-call.c [2018-12-09 00:46:31,854 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/data/181eb8d2f/edc21909bf554a4089742bd283d36cfe/FLAG37b2362e8 [2018-12-09 00:46:32,288 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 00:46:32,289 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/sv-benchmarks/c/float-newlib/double_req_bl_1232b_false-unreach-call.c [2018-12-09 00:46:32,293 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/data/181eb8d2f/edc21909bf554a4089742bd283d36cfe/FLAG37b2362e8 [2018-12-09 00:46:32,301 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/data/181eb8d2f/edc21909bf554a4089742bd283d36cfe [2018-12-09 00:46:32,303 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 00:46:32,304 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 00:46:32,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 00:46:32,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 00:46:32,307 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 00:46:32,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:46:32" (1/1) ... [2018-12-09 00:46:32,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26c1f7bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:46:32, skipping insertion in model container [2018-12-09 00:46:32,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:46:32" (1/1) ... [2018-12-09 00:46:32,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 00:46:32,324 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 00:46:32,420 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 00:46:32,422 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 00:46:32,439 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 00:46:32,451 INFO L195 MainTranslator]: Completed translation [2018-12-09 00:46:32,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:46:32 WrapperNode [2018-12-09 00:46:32,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 00:46:32,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 00:46:32,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 00:46:32,452 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 00:46:32,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:46:32" (1/1) ... [2018-12-09 00:46:32,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:46:32" (1/1) ... [2018-12-09 00:46:32,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 00:46:32,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 00:46:32,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 00:46:32,468 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 00:46:32,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:46:32" (1/1) ... [2018-12-09 00:46:32,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:46:32" (1/1) ... [2018-12-09 00:46:32,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:46:32" (1/1) ... [2018-12-09 00:46:32,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:46:32" (1/1) ... [2018-12-09 00:46:32,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:46:32" (1/1) ... [2018-12-09 00:46:32,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:46:32" (1/1) ... [2018-12-09 00:46:32,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:46:32" (1/1) ... [2018-12-09 00:46:32,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 00:46:32,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 00:46:32,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 00:46:32,518 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 00:46:32,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:46:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 00:46:32,549 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-12-09 00:46:32,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-12-09 00:46:32,549 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 00:46:32,549 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 00:46:32,549 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-09 00:46:32,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-09 00:46:32,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 00:46:32,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 00:46:32,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-09 00:46:32,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 00:46:32,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 00:46:32,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 00:46:32,550 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-12-09 00:46:32,550 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-12-09 00:46:32,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 00:46:32,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 00:46:32,688 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 00:46:32,688 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-09 00:46:32,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:46:32 BoogieIcfgContainer [2018-12-09 00:46:32,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 00:46:32,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 00:46:32,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 00:46:32,691 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 00:46:32,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:46:32" (1/3) ... [2018-12-09 00:46:32,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e351185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:46:32, skipping insertion in model container [2018-12-09 00:46:32,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:46:32" (2/3) ... [2018-12-09 00:46:32,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e351185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:46:32, skipping insertion in model container [2018-12-09 00:46:32,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:46:32" (3/3) ... [2018-12-09 00:46:32,693 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b_false-unreach-call.c [2018-12-09 00:46:32,699 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 00:46:32,703 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 00:46:32,712 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 00:46:32,729 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 00:46:32,729 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 00:46:32,729 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 00:46:32,729 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 00:46:32,729 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 00:46:32,729 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 00:46:32,729 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 00:46:32,730 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 00:46:32,730 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 00:46:32,739 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-12-09 00:46:32,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 00:46:32,743 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:46:32,744 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:46:32,745 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:46:32,748 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:46:32,748 INFO L82 PathProgramCache]: Analyzing trace with hash 2125018936, now seen corresponding path program 1 times [2018-12-09 00:46:32,750 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 00:46:32,750 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 00:46:32,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:46:32,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:46:32,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:46:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:46:32,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:46:32,827 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:46:32,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 00:46:32,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 00:46:32,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 00:46:32,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 00:46:32,838 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-12-09 00:46:32,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:46:32,852 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-12-09 00:46:32,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 00:46:32,852 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-12-09 00:46:32,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:46:32,858 INFO L225 Difference]: With dead ends: 79 [2018-12-09 00:46:32,858 INFO L226 Difference]: Without dead ends: 40 [2018-12-09 00:46:32,859 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 00:46:32,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-09 00:46:32,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-09 00:46:32,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 00:46:32,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-09 00:46:32,883 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-12-09 00:46:32,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:46:32,883 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-09 00:46:32,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 00:46:32,884 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-09 00:46:32,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 00:46:32,885 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:46:32,885 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:46:32,885 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:46:32,885 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:46:32,885 INFO L82 PathProgramCache]: Analyzing trace with hash 2099930979, now seen corresponding path program 1 times [2018-12-09 00:46:32,885 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 00:46:32,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 00:46:32,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:46:32,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:46:32,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:46:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:46:32,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:46:32,928 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:46:32,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 00:46:32,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 00:46:32,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 00:46:32,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 00:46:32,929 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-12-09 00:46:32,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:46:32,945 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-12-09 00:46:32,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 00:46:32,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-09 00:46:32,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:46:32,947 INFO L225 Difference]: With dead ends: 59 [2018-12-09 00:46:32,947 INFO L226 Difference]: Without dead ends: 44 [2018-12-09 00:46:32,947 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 00:46:32,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-09 00:46:32,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-12-09 00:46:32,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-09 00:46:32,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-09 00:46:32,952 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-12-09 00:46:32,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:46:32,952 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-09 00:46:32,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 00:46:32,953 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-09 00:46:32,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 00:46:32,953 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:46:32,953 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:46:32,953 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:46:32,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:46:32,953 INFO L82 PathProgramCache]: Analyzing trace with hash -2011933537, now seen corresponding path program 1 times [2018-12-09 00:46:32,954 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 00:46:32,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 00:46:32,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:46:32,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:46:32,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:46:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:46:32,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:46:32,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:46:32,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 00:46:32,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 00:46:32,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 00:46:32,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 00:46:32,996 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-12-09 00:46:33,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:46:33,009 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-12-09 00:46:33,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 00:46:33,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-12-09 00:46:33,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:46:33,010 INFO L225 Difference]: With dead ends: 63 [2018-12-09 00:46:33,010 INFO L226 Difference]: Without dead ends: 48 [2018-12-09 00:46:33,010 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 00:46:33,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-09 00:46:33,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-12-09 00:46:33,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-09 00:46:33,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-09 00:46:33,014 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-12-09 00:46:33,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:46:33,014 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-09 00:46:33,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 00:46:33,014 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-09 00:46:33,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 00:46:33,015 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:46:33,015 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:46:33,015 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:46:33,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:46:33,015 INFO L82 PathProgramCache]: Analyzing trace with hash 486082400, now seen corresponding path program 1 times [2018-12-09 00:46:33,015 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 00:46:33,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 00:46:33,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:46:33,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:46:33,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:46:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:46:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:46:33,051 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 00:46:33,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:46:33 BoogieIcfgContainer [2018-12-09 00:46:33,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 00:46:33,068 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 00:46:33,068 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 00:46:33,068 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 00:46:33,068 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:46:32" (3/4) ... [2018-12-09 00:46:33,070 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 00:46:33,071 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 00:46:33,071 INFO L168 Benchmark]: Toolchain (without parser) took 767.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.2 MB). Free memory was 954.4 MB in the beginning and 1.0 GB in the end (delta: -72.3 MB). Peak memory consumption was 29.9 MB. Max. memory is 11.5 GB. [2018-12-09 00:46:33,072 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 00:46:33,072 INFO L168 Benchmark]: CACSL2BoogieTranslator took 147.34 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 942.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. [2018-12-09 00:46:33,073 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.18 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 939.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 00:46:33,073 INFO L168 Benchmark]: Boogie Preprocessor took 50.38 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.2 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -160.3 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2018-12-09 00:46:33,073 INFO L168 Benchmark]: RCFGBuilder took 170.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-12-09 00:46:33,074 INFO L168 Benchmark]: TraceAbstraction took 378.47 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.7 MB). Peak memory consumption was 53.7 MB. Max. memory is 11.5 GB. [2018-12-09 00:46:33,074 INFO L168 Benchmark]: Witness Printer took 2.70 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 00:46:33,076 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 147.34 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 942.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.18 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 939.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 50.38 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.2 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -160.3 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 170.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 378.47 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.7 MB). Peak memory consumption was 53.7 MB. Max. memory is 11.5 GB. * Witness Printer took 2.70 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someUnaryDOUBLEoperation at line 74. Possible FailurePath: [L74] double x = -0.0; [L75] double y = 0.0; VAL [y=0] [L76] CALL, EXPR fmin_double(x, y) VAL [\old(x)=4293918727, \old(y)=0] [L46] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4293918727] [L19] __uint32_t msw, lsw; VAL [\old(x)=4293918727, x=4293918727] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4293918727, lsw=1, msw=4293918721, x=4293918727] [L31-L32] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4293918727, lsw=1, msw=4293918721, x=4293918727] [L34-L35] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4293918727, lsw=1, msw=4293918721, x=4293918727] [L38-L39] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L42] return 0; VAL [\old(x)=4293918727, \result=0, lsw=1, msw=4293918721, x=4293918727] [L46] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4293918727, \old(y)=0, __fpclassify_double(x)=0, x=4293918727, y=0] [L46] COND TRUE __fpclassify_double(x) == 0 [L47] return y; VAL [\old(x)=4293918727, \old(y)=0, \result=0, x=4293918727, y=0] [L76] RET, EXPR fmin_double(x, y) VAL [fmin_double(x, y)=0, x=4293918727, y=0] [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=0, res == -0.0 && __signbit_double(res) == 1=0, x=4293918727, y=0] [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() VAL [res=0, x=4293918727, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 144 SDtfs, 0 SDslu, 172 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-09 00:46:34,298 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 00:46:34,299 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 00:46:34,306 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 00:46:34,307 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 00:46:34,307 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 00:46:34,308 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 00:46:34,309 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 00:46:34,310 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 00:46:34,311 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 00:46:34,312 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 00:46:34,312 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 00:46:34,313 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 00:46:34,313 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 00:46:34,314 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 00:46:34,315 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 00:46:34,315 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 00:46:34,316 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 00:46:34,318 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 00:46:34,319 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 00:46:34,320 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 00:46:34,320 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 00:46:34,322 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 00:46:34,322 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 00:46:34,322 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 00:46:34,323 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 00:46:34,324 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 00:46:34,324 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 00:46:34,325 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 00:46:34,326 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 00:46:34,326 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 00:46:34,326 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 00:46:34,326 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 00:46:34,327 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 00:46:34,327 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 00:46:34,328 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 00:46:34,328 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-09 00:46:34,339 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 00:46:34,339 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 00:46:34,340 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 00:46:34,340 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 00:46:34,340 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 00:46:34,340 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 00:46:34,340 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 00:46:34,341 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 00:46:34,341 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 00:46:34,341 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 00:46:34,341 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 00:46:34,341 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 00:46:34,341 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 00:46:34,341 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 00:46:34,341 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 00:46:34,341 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 00:46:34,341 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 00:46:34,342 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 00:46:34,342 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 00:46:34,342 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 00:46:34,342 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 00:46:34,342 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 00:46:34,342 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 00:46:34,342 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 00:46:34,343 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 00:46:34,343 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 00:46:34,343 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 00:46:34,343 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 00:46:34,343 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-09 00:46:34,343 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 00:46:34,343 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 00:46:34,343 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 00:46:34,343 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_d8397d9b-1921-4189-a04c-35308b6f8768/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 -> 064927d7c1e3d8158c8524deee46f65d988c7936 [2018-12-09 00:46:34,367 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 00:46:34,376 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 00:46:34,379 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 00:46:34,380 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 00:46:34,380 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 00:46:34,381 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b_false-unreach-call.c [2018-12-09 00:46:34,419 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/data/7202aa355/ff1209c4d22a46d39fae54cd0f639615/FLAG261c99316 [2018-12-09 00:46:34,741 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 00:46:34,741 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/sv-benchmarks/c/float-newlib/double_req_bl_1232b_false-unreach-call.c [2018-12-09 00:46:34,745 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/data/7202aa355/ff1209c4d22a46d39fae54cd0f639615/FLAG261c99316 [2018-12-09 00:46:34,753 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/data/7202aa355/ff1209c4d22a46d39fae54cd0f639615 [2018-12-09 00:46:34,755 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 00:46:34,756 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 00:46:34,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 00:46:34,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 00:46:34,759 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 00:46:34,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:46:34" (1/1) ... [2018-12-09 00:46:34,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a0bb1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:46:34, skipping insertion in model container [2018-12-09 00:46:34,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:46:34" (1/1) ... [2018-12-09 00:46:34,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 00:46:34,775 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 00:46:34,870 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 00:46:34,873 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 00:46:34,890 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 00:46:34,907 INFO L195 MainTranslator]: Completed translation [2018-12-09 00:46:34,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:46:34 WrapperNode [2018-12-09 00:46:34,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 00:46:34,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 00:46:34,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 00:46:34,908 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 00:46:34,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:46:34" (1/1) ... [2018-12-09 00:46:34,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:46:34" (1/1) ... [2018-12-09 00:46:34,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 00:46:34,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 00:46:34,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 00:46:34,924 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 00:46:34,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:46:34" (1/1) ... [2018-12-09 00:46:34,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:46:34" (1/1) ... [2018-12-09 00:46:34,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:46:34" (1/1) ... [2018-12-09 00:46:34,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:46:34" (1/1) ... [2018-12-09 00:46:34,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:46:34" (1/1) ... [2018-12-09 00:46:34,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:46:34" (1/1) ... [2018-12-09 00:46:34,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:46:34" (1/1) ... [2018-12-09 00:46:34,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 00:46:34,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 00:46:34,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 00:46:34,944 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 00:46:34,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:46:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 00:46:35,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-12-09 00:46:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-12-09 00:46:35,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-12-09 00:46:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 00:46:35,012 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 00:46:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-09 00:46:35,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-09 00:46:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 00:46:35,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 00:46:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 00:46:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-09 00:46:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 00:46:35,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 00:46:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-12-09 00:46:35,013 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-12-09 00:46:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 00:46:35,141 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:46:35,186 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:46:35,231 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 00:46:35,231 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-09 00:46:35,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:46:35 BoogieIcfgContainer [2018-12-09 00:46:35,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 00:46:35,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 00:46:35,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 00:46:35,235 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 00:46:35,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:46:34" (1/3) ... [2018-12-09 00:46:35,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73230cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:46:35, skipping insertion in model container [2018-12-09 00:46:35,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:46:34" (2/3) ... [2018-12-09 00:46:35,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73230cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:46:35, skipping insertion in model container [2018-12-09 00:46:35,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:46:35" (3/3) ... [2018-12-09 00:46:35,237 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b_false-unreach-call.c [2018-12-09 00:46:35,244 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 00:46:35,250 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 00:46:35,263 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 00:46:35,280 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 00:46:35,280 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 00:46:35,280 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 00:46:35,281 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 00:46:35,281 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 00:46:35,281 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 00:46:35,281 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 00:46:35,281 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 00:46:35,281 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 00:46:35,290 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-12-09 00:46:35,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-09 00:46:35,294 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:46:35,294 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:46:35,295 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:46:35,298 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:46:35,299 INFO L82 PathProgramCache]: Analyzing trace with hash -397395125, now seen corresponding path program 1 times [2018-12-09 00:46:35,301 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:46:35,301 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-12-09 00:46:35,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:46:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:46:35,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:46:35,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:46:35,357 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:46:35,365 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:46:35,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 00:46:35,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 00:46:35,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 00:46:35,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 00:46:35,377 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-12-09 00:46:35,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:46:35,391 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-12-09 00:46:35,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 00:46:35,392 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-12-09 00:46:35,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:46:35,398 INFO L225 Difference]: With dead ends: 75 [2018-12-09 00:46:35,399 INFO L226 Difference]: Without dead ends: 38 [2018-12-09 00:46:35,401 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 00:46:35,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-09 00:46:35,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-12-09 00:46:35,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-09 00:46:35,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-12-09 00:46:35,427 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-12-09 00:46:35,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:46:35,428 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-12-09 00:46:35,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 00:46:35,428 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-12-09 00:46:35,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 00:46:35,429 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:46:35,430 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:46:35,430 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:46:35,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:46:35,430 INFO L82 PathProgramCache]: Analyzing trace with hash -2145002868, now seen corresponding path program 1 times [2018-12-09 00:46:35,430 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:46:35,431 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-09 00:46:35,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:46:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:46:35,487 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:46:35,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:46:35,505 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:46:35,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:46:35,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 00:46:35,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 00:46:35,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 00:46:35,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 00:46:35,514 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-12-09 00:46:35,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:46:35,563 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-12-09 00:46:35,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 00:46:35,564 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-12-09 00:46:35,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:46:35,565 INFO L225 Difference]: With dead ends: 56 [2018-12-09 00:46:35,565 INFO L226 Difference]: Without dead ends: 41 [2018-12-09 00:46:35,566 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 00:46:35,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-09 00:46:35,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-09 00:46:35,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-09 00:46:35,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-12-09 00:46:35,573 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-12-09 00:46:35,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:46:35,573 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-12-09 00:46:35,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 00:46:35,574 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-12-09 00:46:35,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 00:46:35,574 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:46:35,575 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:46:35,575 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:46:35,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:46:35,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1859452024, now seen corresponding path program 1 times [2018-12-09 00:46:35,575 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:46:35,576 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-12-09 00:46:35,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:46:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:46:35,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:46:35,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:46:35,772 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:46:35,783 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:46:35,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 00:46:35,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 00:46:35,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 00:46:35,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 00:46:35,784 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-12-09 00:46:36,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:46:36,588 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2018-12-09 00:46:36,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 00:46:36,589 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-12-09 00:46:36,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:46:36,590 INFO L225 Difference]: With dead ends: 63 [2018-12-09 00:46:36,590 INFO L226 Difference]: Without dead ends: 43 [2018-12-09 00:46:36,591 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-09 00:46:36,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-09 00:46:36,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-09 00:46:36,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-09 00:46:36,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-12-09 00:46:36,595 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 23 [2018-12-09 00:46:36,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:46:36,595 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-12-09 00:46:36,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 00:46:36,595 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-12-09 00:46:36,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-09 00:46:36,596 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:46:36,596 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:46:36,596 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:46:36,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:46:36,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1911602824, now seen corresponding path program 1 times [2018-12-09 00:46:36,597 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:46:36,597 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-12-09 00:46:36,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:46:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:46:36,635 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:46:36,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:46:36,646 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:46:36,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:46:36,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 00:46:36,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 00:46:36,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 00:46:36,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 00:46:36,654 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 4 states. [2018-12-09 00:46:36,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:46:36,685 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2018-12-09 00:46:36,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 00:46:36,686 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-12-09 00:46:36,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:46:36,687 INFO L225 Difference]: With dead ends: 61 [2018-12-09 00:46:36,687 INFO L226 Difference]: Without dead ends: 46 [2018-12-09 00:46:36,687 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 00:46:36,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-12-09 00:46:36,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-12-09 00:46:36,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-09 00:46:36,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-12-09 00:46:36,693 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 24 [2018-12-09 00:46:36,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:46:36,693 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-12-09 00:46:36,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 00:46:36,693 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-12-09 00:46:36,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 00:46:36,694 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:46:36,694 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:46:36,694 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:46:36,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:46:36,695 INFO L82 PathProgramCache]: Analyzing trace with hash 2064132100, now seen corresponding path program 1 times [2018-12-09 00:46:36,695 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:46:36,695 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-12-09 00:46:36,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:46:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:46:36,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:46:36,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:46:36,889 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:46:36,898 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:46:36,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 00:46:36,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 00:46:36,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 00:46:36,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 00:46:36,899 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 8 states. [2018-12-09 00:46:37,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:46:37,907 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2018-12-09 00:46:37,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 00:46:37,908 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-12-09 00:46:37,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:46:37,909 INFO L225 Difference]: With dead ends: 62 [2018-12-09 00:46:37,909 INFO L226 Difference]: Without dead ends: 42 [2018-12-09 00:46:37,910 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-09 00:46:37,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-09 00:46:37,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2018-12-09 00:46:37,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 00:46:37,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-12-09 00:46:37,914 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 25 [2018-12-09 00:46:37,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:46:37,914 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-12-09 00:46:37,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 00:46:37,914 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-12-09 00:46:37,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-09 00:46:37,915 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:46:37,915 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:46:37,916 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:46:37,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:46:37,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1438845801, now seen corresponding path program 1 times [2018-12-09 00:46:37,916 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:46:37,917 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-12-09 00:46:37,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:46:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:46:37,972 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:46:37,981 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 00:46:37,981 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:46:37,989 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:46:37,989 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 00:46:37,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 00:46:37,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 00:46:37,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 00:46:37,990 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-12-09 00:46:38,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:46:38,027 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2018-12-09 00:46:38,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 00:46:38,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-12-09 00:46:38,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:46:38,029 INFO L225 Difference]: With dead ends: 58 [2018-12-09 00:46:38,029 INFO L226 Difference]: Without dead ends: 43 [2018-12-09 00:46:38,029 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 00:46:38,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-09 00:46:38,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-09 00:46:38,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-09 00:46:38,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2018-12-09 00:46:38,034 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 30 [2018-12-09 00:46:38,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:46:38,034 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2018-12-09 00:46:38,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 00:46:38,035 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2018-12-09 00:46:38,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-09 00:46:38,035 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:46:38,035 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:46:38,036 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:46:38,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:46:38,036 INFO L82 PathProgramCache]: Analyzing trace with hash 394703345, now seen corresponding path program 1 times [2018-12-09 00:46:38,036 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:46:38,036 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-12-09 00:46:38,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:46:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:46:38,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:46:38,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 00:46:38,221 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:46:38,228 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:46:38,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 00:46:38,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 00:46:38,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 00:46:38,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 00:46:38,229 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 8 states. [2018-12-09 00:46:39,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:46:39,086 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2018-12-09 00:46:39,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 00:46:39,087 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-12-09 00:46:39,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:46:39,088 INFO L225 Difference]: With dead ends: 63 [2018-12-09 00:46:39,088 INFO L226 Difference]: Without dead ends: 43 [2018-12-09 00:46:39,088 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-09 00:46:39,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-09 00:46:39,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-09 00:46:39,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-09 00:46:39,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-12-09 00:46:39,091 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 31 [2018-12-09 00:46:39,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:46:39,092 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-12-09 00:46:39,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 00:46:39,092 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2018-12-09 00:46:39,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-09 00:46:39,092 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:46:39,092 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:46:39,092 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:46:39,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:46:39,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1599971557, now seen corresponding path program 1 times [2018-12-09 00:46:39,093 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:46:39,093 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-12-09 00:46:39,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:46:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:46:39,147 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:46:39,155 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 00:46:39,155 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:46:39,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:46:39,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 00:46:39,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 00:46:39,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 00:46:39,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 00:46:39,163 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 4 states. [2018-12-09 00:46:39,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:46:39,197 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2018-12-09 00:46:39,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 00:46:39,198 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-12-09 00:46:39,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:46:39,198 INFO L225 Difference]: With dead ends: 59 [2018-12-09 00:46:39,198 INFO L226 Difference]: Without dead ends: 44 [2018-12-09 00:46:39,198 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 00:46:39,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-09 00:46:39,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-12-09 00:46:39,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-09 00:46:39,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-12-09 00:46:39,202 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 32 [2018-12-09 00:46:39,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:46:39,202 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-12-09 00:46:39,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 00:46:39,202 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-12-09 00:46:39,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-09 00:46:39,203 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:46:39,203 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:46:39,203 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:46:39,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:46:39,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1200719566, now seen corresponding path program 1 times [2018-12-09 00:46:39,204 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:46:39,204 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-12-09 00:46:39,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:46:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:46:39,262 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:46:39,317 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 00:46:39,317 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:46:39,324 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:46:39,325 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 00:46:39,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 00:46:39,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 00:46:39,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 00:46:39,325 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 5 states. [2018-12-09 00:46:39,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:46:39,444 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2018-12-09 00:46:39,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 00:46:39,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-12-09 00:46:39,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:46:39,446 INFO L225 Difference]: With dead ends: 57 [2018-12-09 00:46:39,446 INFO L226 Difference]: Without dead ends: 41 [2018-12-09 00:46:39,446 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-09 00:46:39,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-09 00:46:39,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-09 00:46:39,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-09 00:46:39,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2018-12-09 00:46:39,449 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 32 [2018-12-09 00:46:39,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:46:39,449 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2018-12-09 00:46:39,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 00:46:39,449 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2018-12-09 00:46:39,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-09 00:46:39,449 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:46:39,449 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:46:39,450 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:46:39,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:46:39,450 INFO L82 PathProgramCache]: Analyzing trace with hash 391372940, now seen corresponding path program 1 times [2018-12-09 00:46:39,450 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:46:39,450 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-12-09 00:46:39,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:46:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:46:39,506 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:46:39,566 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 00:46:39,566 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:46:39,573 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:46:39,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 00:46:39,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 00:46:39,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 00:46:39,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 00:46:39,574 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 8 states. [2018-12-09 00:46:39,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:46:39,916 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2018-12-09 00:46:39,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 00:46:39,917 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-12-09 00:46:39,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:46:39,917 INFO L225 Difference]: With dead ends: 48 [2018-12-09 00:46:39,917 INFO L226 Difference]: Without dead ends: 45 [2018-12-09 00:46:39,918 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-12-09 00:46:39,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-12-09 00:46:39,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-12-09 00:46:39,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-09 00:46:39,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2018-12-09 00:46:39,929 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 32 [2018-12-09 00:46:39,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:46:39,930 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2018-12-09 00:46:39,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 00:46:39,930 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2018-12-09 00:46:39,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-09 00:46:39,930 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:46:39,930 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:46:39,931 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:46:39,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:46:39,931 INFO L82 PathProgramCache]: Analyzing trace with hash -477473555, now seen corresponding path program 1 times [2018-12-09 00:46:39,931 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:46:39,931 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-12-09 00:46:39,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:46:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:46:39,986 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:46:40,077 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 00:46:40,077 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:46:40,084 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:46:40,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 00:46:40,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 00:46:40,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 00:46:40,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 00:46:40,085 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 8 states. [2018-12-09 00:46:40,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:46:40,683 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2018-12-09 00:46:40,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 00:46:40,684 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2018-12-09 00:46:40,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:46:40,684 INFO L225 Difference]: With dead ends: 62 [2018-12-09 00:46:40,684 INFO L226 Difference]: Without dead ends: 37 [2018-12-09 00:46:40,684 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-09 00:46:40,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-12-09 00:46:40,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-12-09 00:46:40,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-09 00:46:40,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-12-09 00:46:40,686 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 33 [2018-12-09 00:46:40,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:46:40,686 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-12-09 00:46:40,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 00:46:40,687 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-12-09 00:46:40,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-09 00:46:40,687 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:46:40,687 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:46:40,687 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:46:40,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:46:40,687 INFO L82 PathProgramCache]: Analyzing trace with hash -25386389, now seen corresponding path program 1 times [2018-12-09 00:46:40,687 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:46:40,688 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-12-09 00:46:40,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:46:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:46:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:46:40,930 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 00:46:40,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:46:40 BoogieIcfgContainer [2018-12-09 00:46:40,955 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 00:46:40,955 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 00:46:40,955 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 00:46:40,956 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 00:46:40,956 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:46:35" (3/4) ... [2018-12-09 00:46:40,957 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 00:46:40,996 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d8397d9b-1921-4189-a04c-35308b6f8768/bin-2019/uautomizer/witness.graphml [2018-12-09 00:46:40,996 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 00:46:40,997 INFO L168 Benchmark]: Toolchain (without parser) took 6241.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 207.6 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -194.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2018-12-09 00:46:40,998 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 00:46:40,998 INFO L168 Benchmark]: CACSL2BoogieTranslator took 150.47 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 927.2 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-12-09 00:46:40,999 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.93 ms. Allocated memory is still 1.0 GB. Free memory is still 927.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 00:46:40,999 INFO L168 Benchmark]: Boogie Preprocessor took 20.41 ms. Allocated memory is still 1.0 GB. Free memory is still 927.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 00:46:40,999 INFO L168 Benchmark]: RCFGBuilder took 287.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 927.2 MB in the beginning and 1.1 GB in the end (delta: -188.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-12-09 00:46:41,000 INFO L168 Benchmark]: TraceAbstraction took 5722.82 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -22.4 MB). Peak memory consumption was 39.5 MB. Max. memory is 11.5 GB. [2018-12-09 00:46:41,000 INFO L168 Benchmark]: Witness Printer took 41.15 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: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2018-12-09 00:46:41,002 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 150.47 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 927.2 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.93 ms. Allocated memory is still 1.0 GB. Free memory is still 927.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.41 ms. Allocated memory is still 1.0 GB. Free memory is still 927.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 287.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 927.2 MB in the beginning and 1.1 GB in the end (delta: -188.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5722.82 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -22.4 MB). Peak memory consumption was 39.5 MB. Max. memory is 11.5 GB. * Witness Printer took 41.15 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: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 80]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L74] double x = -0.0; [L75] double y = 0.0; VAL [x=0.0, y=0.0] [L76] CALL, EXPR fmin_double(x, y) VAL [\old(x)=0.0, \old(y)=0.0] [L46] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0.0] [L19] __uint32_t msw, lsw; VAL [\old(x)=0.0, x=0.0] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L30] return 2; VAL [\old(x)=0.0, \result=2, lsw=0, msw=-2147483648, x=0.0] [L46] RET, EXPR __fpclassify_double(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_double(x)=2, x=0.0, y=0.0] [L46] COND FALSE !(__fpclassify_double(x) == 0) [L48] CALL, EXPR __fpclassify_double(y) VAL [\old(x)=0.0] [L19] __uint32_t msw, lsw; VAL [\old(x)=0.0, x=0.0] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L30] return 2; VAL [\old(x)=0.0, \result=2, lsw=0, msw=0, x=0.0] [L48] RET, EXPR __fpclassify_double(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_double(y)=2, x=0.0, y=0.0] [L48] COND FALSE !(__fpclassify_double(y) == 0) [L51] EXPR x < y ? x : y VAL [\old(x)=0.0, \old(y)=0.0, x=0.0, x < y ? x : y=0.0, y=0.0] [L51] return x < y ? x : y; [L76] RET, EXPR fmin_double(x, y) VAL [fmin_double(x, y)=0.0, x=0.0, y=0.0] [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=0.0, res == -0.0 && __signbit_double(res) == 1=1, x=0.0, y=0.0] [L79] CALL, EXPR __signbit_double(res) VAL [\old(x)=0.0] [L55] __uint32_t msw; VAL [\old(x)=0.0, x=0.0] [L58] ieee_double_shape_type gh_u; [L59] gh_u.value = (x) [L60] EXPR gh_u.parts.msw [L60] (msw) = gh_u.parts.msw [L63] return (msw & 0x80000000) != 0; VAL [\old(x)=0.0, \result=0, msw=0, x=0.0] [L79] RET, EXPR __signbit_double(res) VAL [__signbit_double(res)=0, res=0.0, res == -0.0 && __signbit_double(res) == 1=1, x=0.0, y=0.0] [L79] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [__signbit_double(res)=0, res=0.0, res == -0.0 && __signbit_double(res) == 1=0, x=0.0, y=0.0] [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() VAL [res=0.0, x=0.0, y=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. UNSAFE Result, 5.6s OverallTime, 12 OverallIterations, 2 TraceHistogramMax, 3.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 452 SDtfs, 177 SDslu, 1317 SDs, 0 SdLazy, 513 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 315 GetRequests, 256 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=10, 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, 11 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 345 NumberOfCodeBlocks, 345 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 294 ConstructedInterpolants, 36 QuantifiedInterpolants, 34701 SizeOfPredicates, 23 NumberOfNonLiveVariables, 957 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 36/36 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...