./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 36a0a55241cede481b157c1ab9f348d708a5b166 ........................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 36a0a55241cede481b157c1ab9f348d708a5b166 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 00:33:29,863 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 00:33:29,864 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 00:33:29,871 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 00:33:29,872 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 00:33:29,872 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 00:33:29,873 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 00:33:29,874 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 00:33:29,875 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 00:33:29,875 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 00:33:29,876 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 00:33:29,876 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 00:33:29,877 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 00:33:29,877 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 00:33:29,878 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 00:33:29,879 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 00:33:29,879 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 00:33:29,880 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 00:33:29,882 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 00:33:29,882 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 00:33:29,883 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 00:33:29,884 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 00:33:29,885 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 00:33:29,886 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 00:33:29,886 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 00:33:29,886 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 00:33:29,887 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 00:33:29,888 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 00:33:29,888 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 00:33:29,889 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 00:33:29,889 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 00:33:29,890 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 00:33:29,890 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 00:33:29,890 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 00:33:29,890 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 00:33:29,891 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 00:33:29,891 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-09 00:33:29,900 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 00:33:29,901 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 00:33:29,901 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 00:33:29,901 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 00:33:29,902 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 00:33:29,902 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 00:33:29,902 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 00:33:29,902 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 00:33:29,902 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 00:33:29,902 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 00:33:29,903 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 00:33:29,903 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 00:33:29,903 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 00:33:29,903 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 00:33:29,903 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 00:33:29,903 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 00:33:29,903 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 00:33:29,903 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 00:33:29,903 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 00:33:29,904 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 00:33:29,904 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 00:33:29,904 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 00:33:29,904 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 00:33:29,904 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 00:33:29,904 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 00:33:29,904 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 00:33:29,904 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 00:33:29,904 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-09 00:33:29,904 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 00:33:29,905 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 00:33:29,905 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_cade27ce-ac9f-4721-8dbb-1fbb6e015935/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36a0a55241cede481b157c1ab9f348d708a5b166 [2018-12-09 00:33:29,927 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 00:33:29,936 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 00:33:29,939 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 00:33:29,940 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 00:33:29,940 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 00:33:29,941 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-12-09 00:33:29,982 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/bin-2019/uautomizer/data/dd460b891/e4f21672d0c94b1e9af21a156c76fcea/FLAGffe644059 [2018-12-09 00:33:30,356 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 00:33:30,356 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-12-09 00:33:30,360 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/bin-2019/uautomizer/data/dd460b891/e4f21672d0c94b1e9af21a156c76fcea/FLAGffe644059 [2018-12-09 00:33:30,369 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/bin-2019/uautomizer/data/dd460b891/e4f21672d0c94b1e9af21a156c76fcea [2018-12-09 00:33:30,371 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 00:33:30,371 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 00:33:30,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 00:33:30,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 00:33:30,375 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 00:33:30,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:33:30" (1/1) ... [2018-12-09 00:33:30,377 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 12:33:30, skipping insertion in model container [2018-12-09 00:33:30,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:33:30" (1/1) ... [2018-12-09 00:33:30,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 00:33:30,393 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 00:33:30,485 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 00:33:30,487 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 00:33:30,502 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 00:33:30,514 INFO L195 MainTranslator]: Completed translation [2018-12-09 00:33:30,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:30 WrapperNode [2018-12-09 00:33:30,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 00:33:30,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 00:33:30,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 00:33:30,515 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 00:33:30,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:30" (1/1) ... [2018-12-09 00:33:30,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:30" (1/1) ... [2018-12-09 00:33:30,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 00:33:30,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 00:33:30,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 00:33:30,563 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 00:33:30,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:30" (1/1) ... [2018-12-09 00:33:30,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:30" (1/1) ... [2018-12-09 00:33:30,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:30" (1/1) ... [2018-12-09 00:33:30,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:30" (1/1) ... [2018-12-09 00:33:30,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:30" (1/1) ... [2018-12-09 00:33:30,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:30" (1/1) ... [2018-12-09 00:33:30,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:30" (1/1) ... [2018-12-09 00:33:30,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 00:33:30,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 00:33:30,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 00:33:30,581 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 00:33:30,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/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 00:33:30,618 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 00:33:30,618 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 00:33:30,618 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-12-09 00:33:30,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-12-09 00:33:30,619 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-12-09 00:33:30,619 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-12-09 00:33:30,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 00:33:30,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 00:33:30,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-09 00:33:30,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 00:33:30,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 00:33:30,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 00:33:30,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 00:33:30,619 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-09 00:33:30,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-09 00:33:30,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 00:33:30,760 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 00:33:30,760 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-09 00:33:30,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:33:30 BoogieIcfgContainer [2018-12-09 00:33:30,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 00:33:30,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 00:33:30,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 00:33:30,763 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 00:33:30,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:33:30" (1/3) ... [2018-12-09 00:33:30,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dae36f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:33:30, skipping insertion in model container [2018-12-09 00:33:30,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:30" (2/3) ... [2018-12-09 00:33:30,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dae36f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:33:30, skipping insertion in model container [2018-12-09 00:33:30,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:33:30" (3/3) ... [2018-12-09 00:33:30,765 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b_false-unreach-call.c [2018-12-09 00:33:30,771 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 00:33:30,775 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 00:33:30,785 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 00:33:30,804 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 00:33:30,804 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 00:33:30,804 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 00:33:30,804 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 00:33:30,804 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 00:33:30,804 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 00:33:30,804 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 00:33:30,805 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 00:33:30,805 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 00:33:30,815 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-12-09 00:33:30,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 00:33:30,819 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:33:30,820 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 00:33:30,821 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:33:30,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:33:30,824 INFO L82 PathProgramCache]: Analyzing trace with hash 2127055292, now seen corresponding path program 1 times [2018-12-09 00:33:30,825 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 00:33:30,826 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 00:33:30,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:33:30,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:33:30,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:33:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:33:30,903 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 00:33:30,905 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:33:30,905 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 00:33:30,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 00:33:30,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 00:33:30,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 00:33:30,916 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-12-09 00:33:30,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:33:30,930 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-12-09 00:33:30,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 00:33:30,930 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-12-09 00:33:30,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:33:30,935 INFO L225 Difference]: With dead ends: 79 [2018-12-09 00:33:30,936 INFO L226 Difference]: Without dead ends: 40 [2018-12-09 00:33:30,937 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 00:33:30,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-09 00:33:30,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-09 00:33:30,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 00:33:30,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-09 00:33:30,961 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-12-09 00:33:30,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:33:30,961 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-09 00:33:30,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 00:33:30,961 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-09 00:33:30,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 00:33:30,962 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:33:30,962 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 00:33:30,962 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:33:30,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:33:30,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1720731955, now seen corresponding path program 1 times [2018-12-09 00:33:30,963 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 00:33:30,963 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 00:33:30,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:33:30,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:33:30,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:33:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:33:31,009 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 00:33:31,009 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:33:31,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 00:33:31,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 00:33:31,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 00:33:31,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 00:33:31,011 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-12-09 00:33:31,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:33:31,035 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-12-09 00:33:31,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 00:33:31,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-09 00:33:31,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:33:31,037 INFO L225 Difference]: With dead ends: 59 [2018-12-09 00:33:31,037 INFO L226 Difference]: Without dead ends: 44 [2018-12-09 00:33:31,037 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 00:33:31,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-09 00:33:31,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-12-09 00:33:31,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-09 00:33:31,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-09 00:33:31,042 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-12-09 00:33:31,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:33:31,042 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-09 00:33:31,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 00:33:31,043 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-09 00:33:31,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 00:33:31,043 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:33:31,043 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 00:33:31,043 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:33:31,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:33:31,044 INFO L82 PathProgramCache]: Analyzing trace with hash 185784867, now seen corresponding path program 1 times [2018-12-09 00:33:31,044 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 00:33:31,044 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 00:33:31,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:33:31,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:33:31,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:33:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:33:31,077 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 00:33:31,077 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:33:31,077 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 00:33:31,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 00:33:31,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 00:33:31,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 00:33:31,078 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-12-09 00:33:31,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:33:31,096 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-12-09 00:33:31,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 00:33:31,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-12-09 00:33:31,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:33:31,097 INFO L225 Difference]: With dead ends: 63 [2018-12-09 00:33:31,098 INFO L226 Difference]: Without dead ends: 48 [2018-12-09 00:33:31,098 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 00:33:31,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-09 00:33:31,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-12-09 00:33:31,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-09 00:33:31,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-09 00:33:31,104 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-12-09 00:33:31,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:33:31,104 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-09 00:33:31,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 00:33:31,104 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-09 00:33:31,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 00:33:31,105 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:33:31,105 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 00:33:31,105 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:33:31,105 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:33:31,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1611166492, now seen corresponding path program 1 times [2018-12-09 00:33:31,105 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 00:33:31,106 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 00:33:31,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:33:31,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:33:31,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:33:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:33:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:33:31,145 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 00:33:31,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:33:31 BoogieIcfgContainer [2018-12-09 00:33:31,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 00:33:31,162 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 00:33:31,162 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 00:33:31,162 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 00:33:31,162 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:33:30" (3/4) ... [2018-12-09 00:33:31,164 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 00:33:31,164 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 00:33:31,165 INFO L168 Benchmark]: Toolchain (without parser) took 793.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 953.3 MB in the beginning and 1.0 GB in the end (delta: -82.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2018-12-09 00:33:31,166 INFO L168 Benchmark]: CDTParser took 0.16 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 00:33:31,166 INFO L168 Benchmark]: CACSL2BoogieTranslator took 142.48 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 00:33:31,166 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -162.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2018-12-09 00:33:31,167 INFO L168 Benchmark]: Boogie Preprocessor took 18.11 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 00:33:31,167 INFO L168 Benchmark]: RCFGBuilder took 179.60 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 00:33:31,167 INFO L168 Benchmark]: TraceAbstraction took 400.96 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: 49.5 MB). Peak memory consumption was 49.5 MB. Max. memory is 11.5 GB. [2018-12-09 00:33:31,168 INFO L168 Benchmark]: Witness Printer took 2.64 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 00:33:31,169 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 142.48 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 47.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -162.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.11 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 179.60 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 400.96 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: 49.5 MB). Peak memory consumption was 49.5 MB. Max. memory is 11.5 GB. * Witness Printer took 2.64 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: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 64. Possible FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; VAL [y=0] [L66] CALL, EXPR fmin_float(x, y) VAL [\old(x)=4286578691, \old(y)=0] [L36] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578691] [L13] __uint32_t w; VAL [\old(x)=4286578691, x=4286578691] [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] return 0; VAL [\old(x)=4286578691, \result=0, w=4286578689, x=4286578691] [L36] RET, EXPR __fpclassify_float(x) VAL [\old(x)=4286578691, \old(y)=0, __fpclassify_float(x)=0, x=4286578691, y=0] [L36] COND TRUE __fpclassify_float(x) == 0 [L37] return y; VAL [\old(x)=4286578691, \old(y)=0, \result=0, x=4286578691, y=0] [L66] RET, EXPR fmin_float(x, y) VAL [fmin_float(x, y)=0, x=4286578691, y=0] [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=0, res == -0.0f && __signbit_float(res) == 1=0, x=4286578691, y=0] [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() VAL [res=0, x=4286578691, 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 00:33:32,482 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 00:33:32,483 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 00:33:32,489 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 00:33:32,489 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 00:33:32,489 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 00:33:32,490 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 00:33:32,491 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 00:33:32,492 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 00:33:32,493 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 00:33:32,493 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 00:33:32,493 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 00:33:32,494 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 00:33:32,495 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 00:33:32,495 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 00:33:32,496 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 00:33:32,496 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 00:33:32,497 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 00:33:32,498 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 00:33:32,499 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 00:33:32,500 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 00:33:32,500 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 00:33:32,501 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 00:33:32,501 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 00:33:32,501 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 00:33:32,502 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 00:33:32,502 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 00:33:32,502 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 00:33:32,503 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 00:33:32,503 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 00:33:32,503 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 00:33:32,504 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 00:33:32,504 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 00:33:32,504 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 00:33:32,504 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 00:33:32,505 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 00:33:32,505 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-09 00:33:32,514 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 00:33:32,514 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 00:33:32,514 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 00:33:32,515 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 00:33:32,515 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 00:33:32,515 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 00:33:32,515 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 00:33:32,516 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 00:33:32,516 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 00:33:32,516 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 00:33:32,516 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 00:33:32,516 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 00:33:32,516 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 00:33:32,516 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 00:33:32,517 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 00:33:32,517 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 00:33:32,517 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 00:33:32,517 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 00:33:32,517 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 00:33:32,517 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 00:33:32,518 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 00:33:32,518 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 00:33:32,518 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 00:33:32,518 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 00:33:32,518 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 00:33:32,518 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 00:33:32,519 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 00:33:32,519 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 00:33:32,519 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-09 00:33:32,519 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 00:33:32,519 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 00:33:32,519 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 00:33:32,519 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_cade27ce-ac9f-4721-8dbb-1fbb6e015935/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36a0a55241cede481b157c1ab9f348d708a5b166 [2018-12-09 00:33:32,543 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 00:33:32,551 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 00:33:32,553 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 00:33:32,554 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 00:33:32,554 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 00:33:32,554 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-12-09 00:33:32,590 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/bin-2019/uautomizer/data/78a335e3e/c6a0db99382f461595715b734ddff236/FLAGfa04963c2 [2018-12-09 00:33:32,974 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 00:33:32,974 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-12-09 00:33:32,978 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/bin-2019/uautomizer/data/78a335e3e/c6a0db99382f461595715b734ddff236/FLAGfa04963c2 [2018-12-09 00:33:32,986 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/bin-2019/uautomizer/data/78a335e3e/c6a0db99382f461595715b734ddff236 [2018-12-09 00:33:32,988 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 00:33:32,989 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 00:33:32,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 00:33:32,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 00:33:32,991 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 00:33:32,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:33:32" (1/1) ... [2018-12-09 00:33:32,994 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 12:33:32, skipping insertion in model container [2018-12-09 00:33:32,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:33:32" (1/1) ... [2018-12-09 00:33:32,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 00:33:33,012 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 00:33:33,104 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 00:33:33,107 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 00:33:33,123 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 00:33:33,137 INFO L195 MainTranslator]: Completed translation [2018-12-09 00:33:33,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:33 WrapperNode [2018-12-09 00:33:33,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 00:33:33,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 00:33:33,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 00:33:33,138 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 00:33:33,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:33" (1/1) ... [2018-12-09 00:33:33,149 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:33" (1/1) ... [2018-12-09 00:33:33,154 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 00:33:33,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 00:33:33,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 00:33:33,154 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 00:33:33,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:33" (1/1) ... [2018-12-09 00:33:33,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:33" (1/1) ... [2018-12-09 00:33:33,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:33" (1/1) ... [2018-12-09 00:33:33,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:33" (1/1) ... [2018-12-09 00:33:33,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:33" (1/1) ... [2018-12-09 00:33:33,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:33" (1/1) ... [2018-12-09 00:33:33,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:33" (1/1) ... [2018-12-09 00:33:33,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 00:33:33,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 00:33:33,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 00:33:33,174 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 00:33:33,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/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 00:33:33,238 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 00:33:33,238 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 00:33:33,238 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-12-09 00:33:33,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-12-09 00:33:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-12-09 00:33:33,239 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-12-09 00:33:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 00:33:33,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 00:33:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 00:33:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-09 00:33:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 00:33:33,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 00:33:33,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-12-09 00:33:33,240 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-09 00:33:33,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-09 00:33:33,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 00:33:33,366 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:33:33,392 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:33:33,395 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 00:33:33,395 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-09 00:33:33,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:33:33 BoogieIcfgContainer [2018-12-09 00:33:33,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 00:33:33,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 00:33:33,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 00:33:33,400 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 00:33:33,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:33:32" (1/3) ... [2018-12-09 00:33:33,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0d6317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:33:33, skipping insertion in model container [2018-12-09 00:33:33,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:33" (2/3) ... [2018-12-09 00:33:33,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0d6317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:33:33, skipping insertion in model container [2018-12-09 00:33:33,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:33:33" (3/3) ... [2018-12-09 00:33:33,402 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b_false-unreach-call.c [2018-12-09 00:33:33,407 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 00:33:33,411 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 00:33:33,420 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 00:33:33,436 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 00:33:33,436 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 00:33:33,436 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 00:33:33,437 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 00:33:33,437 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 00:33:33,437 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 00:33:33,437 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 00:33:33,437 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 00:33:33,437 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 00:33:33,446 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-12-09 00:33:33,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-09 00:33:33,450 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:33:33,450 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 00:33:33,451 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:33:33,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:33:33,455 INFO L82 PathProgramCache]: Analyzing trace with hash 148552213, now seen corresponding path program 1 times [2018-12-09 00:33:33,457 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:33:33,457 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/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 00:33:33,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:33:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:33:33,505 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:33:33,519 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 00:33:33,519 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:33:33,527 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:33:33,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 00:33:33,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 00:33:33,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 00:33:33,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 00:33:33,538 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-12-09 00:33:33,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:33:33,551 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-12-09 00:33:33,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 00:33:33,552 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-12-09 00:33:33,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:33:33,558 INFO L225 Difference]: With dead ends: 75 [2018-12-09 00:33:33,558 INFO L226 Difference]: Without dead ends: 38 [2018-12-09 00:33:33,561 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 00:33:33,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-09 00:33:33,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-12-09 00:33:33,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-09 00:33:33,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-12-09 00:33:33,586 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-12-09 00:33:33,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:33:33,587 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-12-09 00:33:33,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 00:33:33,587 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-12-09 00:33:33,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 00:33:33,588 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:33:33,588 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 00:33:33,588 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:33:33,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:33:33,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1171864516, now seen corresponding path program 1 times [2018-12-09 00:33:33,589 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:33:33,589 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/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 00:33:33,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:33:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:33:33,627 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:33:33,644 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 00:33:33,644 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:33:33,652 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:33:33,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 00:33:33,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 00:33:33,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 00:33:33,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 00:33:33,653 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-12-09 00:33:33,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:33:33,680 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-12-09 00:33:33,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 00:33:33,681 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-12-09 00:33:33,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:33:33,683 INFO L225 Difference]: With dead ends: 56 [2018-12-09 00:33:33,683 INFO L226 Difference]: Without dead ends: 41 [2018-12-09 00:33:33,683 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 00:33:33,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-09 00:33:33,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-09 00:33:33,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-09 00:33:33,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-12-09 00:33:33,689 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-12-09 00:33:33,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:33:33,689 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-12-09 00:33:33,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 00:33:33,689 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-12-09 00:33:33,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 00:33:33,690 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:33:33,690 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 00:33:33,690 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:33:33,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:33:33,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1456590866, now seen corresponding path program 1 times [2018-12-09 00:33:33,691 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:33:33,691 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/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 00:33:33,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:33:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:33:33,722 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:33:33,805 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 00:33:33,806 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:33:33,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:33:33,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 00:33:33,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 00:33:33,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 00:33:33,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 00:33:33,813 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-12-09 00:33:34,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:33:34,164 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2018-12-09 00:33:34,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 00:33:34,165 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-12-09 00:33:34,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:33:34,166 INFO L225 Difference]: With dead ends: 60 [2018-12-09 00:33:34,166 INFO L226 Difference]: Without dead ends: 40 [2018-12-09 00:33:34,166 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-09 00:33:34,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-09 00:33:34,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-09 00:33:34,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 00:33:34,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-12-09 00:33:34,170 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 23 [2018-12-09 00:33:34,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:33:34,170 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-12-09 00:33:34,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 00:33:34,170 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-12-09 00:33:34,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-09 00:33:34,171 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:33:34,171 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 00:33:34,171 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:33:34,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:33:34,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1971562729, now seen corresponding path program 1 times [2018-12-09 00:33:34,171 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:33:34,171 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/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 00:33:34,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:33:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:33:34,208 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:33:34,220 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 00:33:34,220 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:33:34,227 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:33:34,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 00:33:34,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 00:33:34,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 00:33:34,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 00:33:34,227 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-12-09 00:33:34,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:33:34,242 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2018-12-09 00:33:34,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 00:33:34,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-12-09 00:33:34,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:33:34,243 INFO L225 Difference]: With dead ends: 56 [2018-12-09 00:33:34,243 INFO L226 Difference]: Without dead ends: 41 [2018-12-09 00:33:34,244 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 00:33:34,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-09 00:33:34,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-09 00:33:34,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-09 00:33:34,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-12-09 00:33:34,247 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 30 [2018-12-09 00:33:34,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:33:34,247 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-12-09 00:33:34,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 00:33:34,247 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-12-09 00:33:34,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-09 00:33:34,248 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:33:34,248 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 00:33:34,248 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:33:34,248 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:33:34,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1323623109, now seen corresponding path program 1 times [2018-12-09 00:33:34,249 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:33:34,249 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/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 00:33:34,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:33:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:33:34,285 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:33:34,360 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 00:33:34,361 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:33:34,372 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:33:34,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 00:33:34,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 00:33:34,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 00:33:34,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 00:33:34,373 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 8 states. [2018-12-09 00:33:34,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:33:34,643 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-12-09 00:33:34,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 00:33:34,644 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-12-09 00:33:34,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:33:34,645 INFO L225 Difference]: With dead ends: 58 [2018-12-09 00:33:34,645 INFO L226 Difference]: Without dead ends: 35 [2018-12-09 00:33:34,645 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-09 00:33:34,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-09 00:33:34,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-09 00:33:34,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-09 00:33:34,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-12-09 00:33:34,649 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 31 [2018-12-09 00:33:34,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:33:34,649 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-12-09 00:33:34,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 00:33:34,649 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-12-09 00:33:34,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-09 00:33:34,649 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:33:34,650 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 00:33:34,650 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:33:34,650 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:33:34,650 INFO L82 PathProgramCache]: Analyzing trace with hash 207693948, now seen corresponding path program 1 times [2018-12-09 00:33:34,650 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:33:34,650 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/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 00:33:34,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:33:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:33:34,685 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:33:34,737 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 00:33:34,738 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:33:34,744 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:33:34,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 00:33:34,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 00:33:34,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 00:33:34,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 00:33:34,745 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 5 states. [2018-12-09 00:33:34,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:33:34,805 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-12-09 00:33:34,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 00:33:34,806 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-12-09 00:33:34,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:33:34,806 INFO L225 Difference]: With dead ends: 51 [2018-12-09 00:33:34,806 INFO L226 Difference]: Without dead ends: 35 [2018-12-09 00:33:34,807 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 00:33:34,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-09 00:33:34,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-09 00:33:34,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-09 00:33:34,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-12-09 00:33:34,810 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2018-12-09 00:33:34,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:33:34,810 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-12-09 00:33:34,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 00:33:34,810 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-12-09 00:33:34,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-09 00:33:34,811 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:33:34,811 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 00:33:34,811 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:33:34,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:33:34,811 INFO L82 PathProgramCache]: Analyzing trace with hash -601652678, now seen corresponding path program 1 times [2018-12-09 00:33:34,812 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:33:34,812 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/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 00:33:34,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:33:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:33:34,850 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:33:34,899 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 00:33:34,899 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:33:34,906 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:33:34,906 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 00:33:34,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 00:33:34,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 00:33:34,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 00:33:34,906 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 8 states. [2018-12-09 00:33:35,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:33:35,046 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-12-09 00:33:35,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 00:33:35,046 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-12-09 00:33:35,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:33:35,047 INFO L225 Difference]: With dead ends: 38 [2018-12-09 00:33:35,047 INFO L226 Difference]: Without dead ends: 35 [2018-12-09 00:33:35,047 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-12-09 00:33:35,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-09 00:33:35,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-09 00:33:35,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-09 00:33:35,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-12-09 00:33:35,050 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-12-09 00:33:35,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:33:35,050 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-12-09 00:33:35,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 00:33:35,050 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-12-09 00:33:35,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-09 00:33:35,051 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:33:35,051 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 00:33:35,051 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:33:35,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:33:35,051 INFO L82 PathProgramCache]: Analyzing trace with hash -193082209, now seen corresponding path program 1 times [2018-12-09 00:33:35,051 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:33:35,051 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/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 00:33:35,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:33:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:33:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:33:35,180 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 00:33:35,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:33:35 BoogieIcfgContainer [2018-12-09 00:33:35,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 00:33:35,205 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 00:33:35,205 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 00:33:35,205 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 00:33:35,206 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:33:33" (3/4) ... [2018-12-09 00:33:35,207 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 00:33:35,249 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_cade27ce-ac9f-4721-8dbb-1fbb6e015935/bin-2019/uautomizer/witness.graphml [2018-12-09 00:33:35,249 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 00:33:35,249 INFO L168 Benchmark]: Toolchain (without parser) took 2260.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 943.4 MB in the beginning and 884.6 MB in the end (delta: 58.8 MB). Peak memory consumption was 197.2 MB. Max. memory is 11.5 GB. [2018-12-09 00:33:35,250 INFO L168 Benchmark]: CDTParser took 0.12 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 00:33:35,250 INFO L168 Benchmark]: CACSL2BoogieTranslator took 148.71 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 00:33:35,251 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.54 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 00:33:35,251 INFO L168 Benchmark]: Boogie Preprocessor took 19.88 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 00:33:35,251 INFO L168 Benchmark]: RCFGBuilder took 221.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -180.8 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-12-09 00:33:35,252 INFO L168 Benchmark]: TraceAbstraction took 1808.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 891.4 MB in the end (delta: 216.6 MB). Peak memory consumption was 216.6 MB. Max. memory is 11.5 GB. [2018-12-09 00:33:35,252 INFO L168 Benchmark]: Witness Printer took 43.53 ms. Allocated memory is still 1.2 GB. Free memory was 891.4 MB in the beginning and 884.6 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-09 00:33:35,254 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 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 148.71 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.54 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.88 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 221.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -180.8 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1808.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 891.4 MB in the end (delta: 216.6 MB). Peak memory consumption was 216.6 MB. Max. memory is 11.5 GB. * Witness Printer took 43.53 ms. Allocated memory is still 1.2 GB. Free memory was 891.4 MB in the beginning and 884.6 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 70]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; VAL [x=0.0, y=0.0] [L66] CALL, EXPR fmin_float(x, y) VAL [\old(x)=0.0, \old(y)=0.0] [L36] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0.0] [L13] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND TRUE w == 0x00000000 || w == 0x80000000 [L22] return 2; VAL [\old(x)=0.0, \result=2, w=2147483648, x=0.0] [L36] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(x)=2, x=0.0, y=0.0] [L36] COND FALSE !(__fpclassify_float(x) == 0) [L38] CALL, EXPR __fpclassify_float(y) VAL [\old(x)=0.0] [L13] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND TRUE w == 0x00000000 || w == 0x80000000 [L22] return 2; VAL [\old(x)=0.0, \result=2, w=0, x=0.0] [L38] RET, EXPR __fpclassify_float(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(y)=2, x=0.0, y=0.0] [L38] COND FALSE !(__fpclassify_float(y) == 0) [L41] EXPR x < y ? x : y VAL [\old(x)=0.0, \old(y)=0.0, x=0.0, x < y ? x : y=0.0, y=0.0] [L41] return x < y ? x : y; [L66] RET, EXPR fmin_float(x, y) VAL [fmin_float(x, y)=0.0, x=0.0, y=0.0] [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=0.0, res == -0.0f && __signbit_float(res) == 1=1, x=0.0, y=0.0] [L69] CALL, EXPR __signbit_float(res) VAL [\old(x)=0.0] [L45] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L48] ieee_float_shape_type gf_u; [L49] gf_u.value = (x) [L50] EXPR gf_u.word [L50] (w) = gf_u.word [L53] return (w & 0x80000000) != 0; VAL [\old(x)=0.0, \result=0, w=0, x=0.0] [L69] RET, EXPR __signbit_float(res) VAL [__signbit_float(res)=0, res=0.0, res == -0.0f && __signbit_float(res) == 1=1, x=0.0, y=0.0] [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [__signbit_float(res)=0, res=0.0, res == -0.0f && __signbit_float(res) == 1=0, x=0.0, y=0.0] [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() VAL [res=0.0, x=0.0, y=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. UNSAFE Result, 1.7s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 272 SDtfs, 111 SDslu, 739 SDs, 0 SdLazy, 268 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 196 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 231 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 184 ConstructedInterpolants, 12 QuantifiedInterpolants, 13359 SizeOfPredicates, 15 NumberOfNonLiveVariables, 539 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 24/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...